{ "url": "https://www.amazon.de", "auditedAt": "2026-07-26T02:35:42.431Z", "mode": "report", "status": "completed", "statusDetail": "Coverage-complete audit of six representative anonymous/public paths; signed-in checkout and account-management states were out of scope.", "page": { "appType": "hybrid", "framework": "Amazon AUI plus server-rendered MPA templates and client-side modules", "notes": "Large international commerce site. Representative coverage includes home, search, product, basket, add-to-basket and sign-in; excludes authenticated checkout, order history, seller, media and account settings." }, "evidenceUsed": [ "Modern Web Guidance live feed", "screenshot", "layout-metrics", "DOM/evaluate probes", "CDP flow replay", "trace", "HAR", "Lighthouse", "discoverability/no-JS", "headers", "cookies", "trackers", "images", "secrets", "heap summaries", "robots.txt" ], "guidanceConsulted": [ "accessibility", "accessible-error-announcement", "adapt-scrollbar-to-contrast-preferences", "agentic-forms", "agentic-javascript-tools", "anchor-positioning-tab-underline", "animate-element-entry-exit", "animate-to-from-top-layer", "animate-to-intrinsic-sizes", "animated-select-picker", "apply-webgl-shaders", "autofill-address-form", "autofill-highlight-inputs", "autofill-payment-form", "autofill-sign-in-form", "autofill-sign-up-form", "batch-analytics-events", "brand-consistent-forms", "branded-select-styling", "break-up-long-tasks", "calculate-event-differentials", "calculate-total-foreground-time", "calculate-with-intrinsic-sizes", "capture-location-agnostic-data", "carousel-slide-effects", "carousel-snap-highlights", "child-state-based-styling", "complex-shapes", "component-specific-light-dark-theme", "conditional-async-dependencies", "consistent-cross-document-transitions", "content-based-styling", "coordinate-global-events", "cross-document-transitions", "css", "css-layout", "custom-select-picker-layouts", "customize-scrollbar-color-and-thickness", "dark-mode", "declarative-dialog-popover-control", "defer-rendering-heavy-content", "defer-work-until-scroll-ends", "deliver-optimized-decorative-images", "deprioritize-background-fetches", "design-token-reactivity", "detect-initial-visibility-state", "directional-navigation-transitions", "dynamic-sibling-animations", "dynamic-sibling-styling", "efficient-background-processing", "export-html-media-from-canvas", "expose-canvas-content-to-browser-features", "faster-spa-view-transitions", "flicker-free-client-side-ab-testing", "fluid-scaling", "form-fields-automatically-fit-contents", "format-human-readable-durations", "forms", "full-session-analytics", "group-element-transitions", "highlight-text-ranges", "html", "identify-heavy-scripts", "identify-inp-causes", "improve-next-page-load-performance", "improve-text-layout-and-legibility", "individual-transform-properties", "interactions-in-complex-layouts", "interactive-content-in-3d-scenes", "interactive-content-reveal", "interest-triggered-action-previews", "interest-triggered-tooltips", "language-detection", "language-model", "light-dismiss-a-dialog", "manage-recurring-intervals", "model-partial-time-concepts", "move-dom-element-without-losing-state", "navigation-drawer", "optimize-image-priority", "optimize-preload-priority", "optimize-script-priority", "overflow-clipping-control", "parallax-scroll-effects", "passkey-authentication", "passkey-conditional-create", "passkey-management", "passkey-reauthentication", "passkey-registration", "passkeys", "performance", "persistent-app-tours", "persistent-toast-notifications", "persistent-top-layer-ui", "physics-based-easing", "platform-controls-dismiss-dialog", "position-aware-tooltips", "precise-text-alignment", "prevent-text-wrapping", "privacy", "pull-to-reveal", "reduce-style-repetition", "required-field-feedback", "resilient-context-menus-and-nested-dropdowns", "resolution-optimized-pseudo-elements", "rich-media-picker", "same-document-transitions", "schedule-tasks-by-priority", "scroll-entry-exit-effects", "scroll-position-aware-elements", "scroll-progress-indicator", "scroll-snap-realtime-feedback", "scroll-snap-state-sync", "scroll-target-on-load", "scrollability-affordance-hints", "scrollytelling", "search-hidden-content", "security", "select-menu-interaction", "sequence-distributed-events", "shaped-cutouts", "shrinking-header-on-scroll", "size-aware-styling", "soft-edge-content-fade", "stabilize-reactive-state", "stack-drill-down", "style-parent-with-has", "summarizer", "support-global-calendar-systems", "swipe-to-remove", "translator", "validate-input-after-interaction", "visually-stable-font-fallbacks", "visually-stable-mixed-fonts", "visually-texture-content", "webmcp" ], "artifacts": [ { "type": "screenshot", "path": "evidence/home-desktop.png", "caption": "Homepage load with consent and delivery interruptions", "condition": "desktop 1440x1000", "findingIds": [ "F-003", "F-004", "F-006", "F-029", "F-036" ] }, { "type": "screenshot", "path": "evidence/home-mobile.png", "caption": "Homepage at narrow viewport", "condition": "360x800", "findingIds": [ "F-006", "F-009" ] }, { "type": "screenshot", "path": "evidence/home-preferences.png", "caption": "Homepage under dark, reduced-motion and increased-contrast preferences", "condition": "dark, reduce, contrast more", "findingIds": [ "F-001", "F-008" ] }, { "type": "other", "path": "evidence/preferences-probe.json", "caption": "Computed preferences, colors, animations and CSS feature probe", "condition": "dark, reduce, contrast more", "findingIds": [ "F-001" ] }, { "type": "screenshot", "path": "evidence/search-mobile.png", "caption": "Search listing scaled at narrow viewport", "condition": "360x800", "findingIds": [ "F-010", "F-019" ] }, { "type": "screenshot", "path": "evidence/product-mobile.png", "caption": "Product detail scaled at narrow viewport", "condition": "360x800", "findingIds": [ "F-008", "F-010", "F-012", "F-019", "F-034" ] }, { "type": "screenshot", "path": "evidence/cart-mobile.png", "caption": "Empty basket at narrow viewport", "condition": "360x800", "findingIds": [] }, { "type": "screenshot", "path": "evidence/signin-valid-mobile.png", "caption": "Sign-in entry at narrow viewport", "condition": "360x800", "findingIds": [ "F-030" ] }, { "type": "layout", "path": "evidence/home-layout-mobile.json", "caption": "Homepage layout and overflow metrics", "condition": "360x800", "findingIds": [ "F-009", "F-020" ] }, { "type": "layout", "path": "evidence/cart-layout-mobile.json", "caption": "Basket CLS and layout metrics", "condition": "360x800", "findingIds": [ "F-014" ] }, { "type": "trace", "path": "evidence/home-trace.json", "caption": "Homepage DevTools trace", "condition": "desktop", "findingIds": [] }, { "type": "trace-summary", "path": "evidence/home-trace-summary.json", "caption": "Compact homepage performance timings", "condition": "desktop", "findingIds": [ "F-013" ] }, { "type": "har", "path": "evidence/home.har", "caption": "Homepage network archive", "condition": "desktop", "findingIds": [ "F-015", "F-016", "F-040" ] }, { "type": "har-summary", "path": "evidence/home-summary.json", "caption": "Compact homepage network signals", "condition": "desktop", "findingIds": [ "F-015", "F-029", "F-039", "F-040" ] }, { "type": "lighthouse", "path": "evidence/lighthouse-home.json", "caption": "Lighthouse JSON for homepage", "condition": "mobile emulation", "findingIds": [ "F-017", "F-023" ] }, { "type": "other", "path": "evidence/lighthouse-summary.json", "caption": "Compact selected Lighthouse audits", "condition": "mobile emulation", "findingIds": [ "F-011", "F-013", "F-016", "F-020", "F-021", "F-022", "F-025", "F-039" ] }, { "type": "discoverability", "path": "evidence/home-discoverability.json", "caption": "Homepage raw HTML versus rendered coverage", "condition": "generic crawler", "findingIds": [ "F-032" ] }, { "type": "screenshot", "path": "evidence/home-discoverability-rendered.png", "caption": "Rendered homepage discoverability view", "condition": "JavaScript enabled", "findingIds": [] }, { "type": "screenshot", "path": "evidence/home-discoverability-crawler.png", "caption": "Homepage generic crawler view", "condition": "JavaScript disabled", "findingIds": [ "F-032" ] }, { "type": "discoverability", "path": "evidence/product-discoverability.json", "caption": "Product raw HTML versus rendered coverage", "condition": "generic crawler", "findingIds": [ "F-032" ] }, { "type": "other", "path": "evidence/home-headers.json", "caption": "Security header probe", "condition": "homepage", "findingIds": [ "F-028", "F-031" ] }, { "type": "other", "path": "evidence/home-cookies.json", "caption": "Cookie attribute probe", "condition": "homepage", "findingIds": [ "F-028" ] }, { "type": "other", "path": "evidence/home-trackers.json", "caption": "Third-party origin/tracker probe", "condition": "homepage", "findingIds": [] }, { "type": "other", "path": "evidence/home-images.json", "caption": "Image audit", "condition": "homepage", "findingIds": [ "F-014", "F-022", "F-038" ] }, { "type": "other", "path": "evidence/home-secrets.json", "caption": "Client secret scan", "condition": "homepage", "findingIds": [] }, { "type": "heap", "path": "evidence/heap-baseline.json", "caption": "Baseline heap summary", "condition": "homepage", "findingIds": [] }, { "type": "heap", "path": "evidence/heap-after-menu.json", "caption": "Heap after repeated menu interaction", "condition": "homepage repeated interaction", "findingIds": [] }, { "type": "other", "path": "evidence/flow-result.json", "caption": "Add-to-basket flow result", "condition": "desktop", "findingIds": [] }, { "type": "screenshot", "path": "evidence/flow/step-05-waitforelement.png", "caption": "Successful post-add basket state", "condition": "desktop", "findingIds": [] }, { "type": "dom", "path": "evidence/home-page-probe.json", "caption": "Homepage semantic and feature probe", "condition": "desktop", "findingIds": [ "F-002", "F-003", "F-004", "F-005", "F-007", "F-026", "F-033", "F-035" ] }, { "type": "dom", "path": "evidence/search-page-probe.json", "caption": "Search semantic and feature probe", "condition": "desktop", "findingIds": [ "F-018", "F-024", "F-026" ] }, { "type": "dom", "path": "evidence/product-page-probe.json", "caption": "Product semantic and feature probe", "condition": "desktop", "findingIds": [ "F-002", "F-005", "F-007", "F-011", "F-012", "F-017", "F-018", "F-025", "F-027", "F-033", "F-034", "F-035", "F-041" ] }, { "type": "dom", "path": "evidence/cart-page-probe.json", "caption": "Basket semantic and feature probe", "condition": "desktop", "findingIds": [ "F-024" ] }, { "type": "other", "path": "evidence/signin-valid-probe.json", "caption": "Authentication affordance probe", "condition": "desktop", "findingIds": [ "F-030", "F-037" ] }, { "type": "other", "path": "evidence/robots.txt", "caption": "robots.txt including AI-agent directives", "condition": "crawler", "findingIds": [ "F-026", "F-041" ] } ], "config": { "loaded": false }, "coverage": { "catalogVersion": "modern-web-guidance@0.0.172", "catalogChecksum": "sha256:78ccfdb2d483f4c57d9dafed80fd86c6265585a56457c8dcfddc254b80fb44d7", "expected": 58, "recorded": 58, "judged": 58, "blocked": 0, "notRun": 0, "missing": 0, "unknown": 0, "duplicates": 0, "complete": true }, "checkOutcomes": [ { "principleId": "respect-user-preferences", "checkId": "respects-color-scheme", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "Under emulated dark mode the page body remained rgb(255,255,255), text remained dark, color-scheme was normal, and the preference screenshot stayed light.", "pathIds": [ "home" ], "artifacts": [ "evidence/preferences-probe.json", "evidence/home-preferences.png" ], "findingIds": [ "F-001" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-reduced-motion", "status": "pass", "confidence": "high", "method": "Emulated prefers-reduced-motion: reduce; inspected active animations.", "evidence": "The preference probe reported zero active animations under reduce, and no auto-advancing video was observed.", "pathIds": [ "home" ], "artifacts": [ "evidence/preferences-probe.json" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-contrast", "status": "pass", "confidence": "high", "method": "Emulated prefers-contrast: more and ran Lighthouse contrast.", "evidence": "The high-contrast preference capture remained readable and Lighthouse color-contrast scored 1.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-preferences.png", "evidence/lighthouse-summary.json" ] }, { "principleId": "implement-natural-interactions", "checkId": "view-transitions", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "The four-route CSS/DOM probes found no view-transition declarations, while navigation between search, product and basket is a primary journey.", "pathIds": [ "home", "search", "product", "cart" ], "artifacts": [ "evidence/home-page-probe.json", "evidence/product-page-probe.json" ], "findingIds": [ "F-002" ] }, { "principleId": "implement-natural-interactions", "checkId": "scroll-driven-animations", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from representative-route recon.", "evidence": "No scroll-linked narrative, parallax, reveal, or equivalent interaction was present on the selected templates.", "reason": "No scroll-linked narrative, parallax, reveal, or equivalent interaction was present on the selected templates.", "pathIds": [ "home" ] }, { "principleId": "implement-natural-interactions", "checkId": "physical-gestures", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "Desktop and mobile screenshots show horizontal card rails and custom overlays; probes found no scroll-snap/modern declarative gesture signal and 26-44 custom role dialogs per route.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-desktop.png", "evidence/home-page-probe.json" ], "findingIds": [ "F-003" ] }, { "principleId": "provide-guided-navigation", "checkId": "scroll-state-aware-chrome", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "The homepage screenshot shows two persistent navigation rows; CSS probes found no scroll-state or scroll-timeline technique on any representative route.", "pathIds": [ "home", "search", "product", "cart" ], "artifacts": [ "evidence/home-desktop.png", "evidence/home-page-probe.json" ], "findingIds": [ "F-004" ] }, { "principleId": "provide-guided-navigation", "checkId": "anchored-positioning", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "Probes found 26-44 role=dialog elements, zero native dialogs/popovers, and no anchor-name, position-anchor or position-try declarations.", "pathIds": [ "home", "search", "product", "cart" ], "artifacts": [ "evidence/home-page-probe.json", "evidence/product-page-probe.json" ], "findingIds": [ "F-005" ] }, { "principleId": "provide-guided-navigation", "checkId": "directs-attention", "status": "pass", "confidence": "high", "method": "Reviewed skip links, headings and representative navigation flow.", "evidence": "Search, product and basket expose contextual headings and skip links; the add-to-cart flow moved to a clearly changed basket state.", "pathIds": [ "home" ], "artifacts": [ "evidence/flow-result.json", "evidence/search-page-probe.json" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "no-intrusive-interruptions", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "The first desktop capture shows a large cookie-consent layer covering the lower half of the viewport while a delivery-address popover covers the hero; the mobile capture also starts with the delivery overlay.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-desktop.png", "evidence/home-mobile.png" ], "findingIds": [ "F-006" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "semantic-dismissible-primitives", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "Across the representative pages probes counted 26-44 role dialogs but zero dialog, popover, or details elements.", "pathIds": [ "home", "search", "product", "cart" ], "artifacts": [ "evidence/home-page-probe.json", "evidence/product-page-probe.json" ], "findingIds": [ "F-007" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "reduced-chrome", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "The homepage first viewport is dominated by two navigation bars, a campaign banner and four competing promotional cards; the product probe exposed 14 h1 elements and repeated sustainability/error panels.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-preferences.png", "evidence/product-mobile.png" ], "findingIds": [ "F-008" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "responsive-no-horizontal-scroll", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "The mobile layout reported no viewport meta, a 1000 px layout viewport and 640 px horizontal overflow on the homepage; all four page probes reported viewport=null.", "pathIds": [ "home", "search", "product", "cart" ], "artifacts": [ "evidence/home-layout-mobile.json", "evidence/home-mobile.png" ], "findingIds": [ "F-009" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "component-level-responsiveness", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "Representative probes found no @container rules in authored inline styles and mobile screenshots show desktop grids scaled to fit rather than components reorganized for their available space.", "pathIds": [ "home", "search", "product", "cart" ], "artifacts": [ "evidence/search-mobile.png", "evidence/product-mobile.png" ], "findingIds": [ "F-010" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "input-modality-aware", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "The probes counted 45/171 small targets on home, 97/247 on search and 176/409 on product; Lighthouse failed target-size, and several focused shortcut/search controls had no outline or shadow.", "pathIds": [ "home", "search", "product", "cart" ], "artifacts": [ "evidence/lighthouse-summary.json", "evidence/product-page-probe.json" ], "findingIds": [ "F-011" ] }, { "principleId": "support-core-task-success", "checkId": "clear-purpose-and-primary-action", "status": "pass", "confidence": "high", "method": "Reviewed first views on home, search, product and basket.", "evidence": "Search is prominent, result cards are clearly labeled, product price and Add to basket are visible, and empty basket actions are explicit.", "pathIds": [ "home" ], "artifacts": [ "evidence/search-mobile.png", "evidence/product-mobile.png", "evidence/cart-mobile.png" ] }, { "principleId": "support-core-task-success", "checkId": "primary-flow-completion", "status": "pass", "confidence": "high", "method": "Replayed product-to-basket flow over CDP.", "evidence": "All five flow steps succeeded: consent was declined, Add to basket navigated to smart-wagon, and a basket indicator appeared.", "pathIds": [ "home" ], "artifacts": [ "evidence/flow-result.json", "evidence/flow/step-05-waitforelement.png" ] }, { "principleId": "support-core-task-success", "checkId": "clear-system-state-and-recovery", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "The product DOM contains repeated “Sorry, there was a problem” and “Issue loading the information” headings, while the captured product view provides no adjacent retry control.", "pathIds": [ "product" ], "artifacts": [ "evidence/product-page-probe.json", "evidence/product-mobile.png" ], "findingIds": [ "F-012" ] }, { "principleId": "be-fast-and-stable", "checkId": "good-core-web-vitals", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "Lighthouse measured FCP 6.6 s, LCP 18.1 s, Speed Index 6.6 s and performance 0.56; the independent trace measured LCP 3.05 s under a lighter run.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-summary.json", "evidence/home-trace-summary.json" ], "findingIds": [ "F-013" ] }, { "principleId": "be-fast-and-stable", "checkId": "visual-stability", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "The 360 px basket layout observer measured CLS 0.1104 from two shifts, exceeding the good <=0.1 threshold; 39 of 40 homepage images lacked both dimensions.", "pathIds": [ "cart" ], "artifacts": [ "evidence/cart-layout-mobile.json", "evidence/home-images.json" ], "findingIds": [ "F-014" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-main-thread", "status": "pass", "confidence": "high", "method": "Compared Lighthouse TBT with trace long-task summary.", "evidence": "Lighthouse TBT was 110 ms and the independent trace reported zero long tasks and 0 ms total blocking time.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-summary.json", "evidence/home-trace-summary.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-resource-delivery", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "HAR captured 289 requests and 4.35 MB transferred, including five parser-inserted VeryHigh-priority stylesheets, 21 fonts and 219 images; Lighthouse LCP was 18.1 s.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json", "evidence/home.har" ], "findingIds": [ "F-015" ] }, { "principleId": "be-fast-and-stable", "checkId": "trim-unused-and-duplicate-code", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "Lighthouse estimated 642 KiB unused JavaScript and 207 KiB unused CSS, including a 590 KiB WAF challenge script and feature bundles with 60-100% waste.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-summary.json", "evidence/home.har" ], "findingIds": [ "F-016" ] }, { "principleId": "be-inclusive", "checkId": "names-roles-labels", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "Lighthouse failed aria-allowed-attr and label-content-name-mismatch; the product probe found 35 img elements without alt and the search probe found one.", "pathIds": [ "home", "search", "product", "cart" ], "artifacts": [ "evidence/lighthouse-home.json", "evidence/product-page-probe.json" ], "findingIds": [ "F-017" ] }, { "principleId": "be-inclusive", "checkId": "sufficient-contrast", "status": "pass", "confidence": "high", "method": "Ran Lighthouse automated contrast and reviewed preference capture.", "evidence": "Lighthouse color-contrast scored 1 and the captured core navigation/card text remained visually distinct.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-summary.json", "evidence/home-preferences.png" ] }, { "principleId": "be-inclusive", "checkId": "structure-and-focus", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "The product page exposed 14 h1 elements, search had no main landmark, and focused search/shortcut controls sometimes had neither outline nor box-shadow.", "pathIds": [ "home", "search", "product", "cart" ], "artifacts": [ "evidence/product-page-probe.json", "evidence/search-page-probe.json" ], "findingIds": [ "F-018" ] }, { "principleId": "be-inclusive", "checkId": "legible-text", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "At 360 px, search and product pages are 1000 px desktop layouts scaled to 0.36; product descriptions and controls are visibly too small for comfortable reading.", "pathIds": [ "home", "search", "product", "cart" ], "artifacts": [ "evidence/search-mobile.png", "evidence/product-mobile.png" ], "findingIds": [ "F-019" ] }, { "principleId": "be-inclusive", "checkId": "zoom-reflow-targets-and-media", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "All representative page probes lacked a viewport meta declaration; Lighthouse failed target-size and the mobile screenshots show desktop-scale layouts.", "pathIds": [ "home", "search", "product", "cart" ], "artifacts": [ "evidence/home-layout-mobile.json", "evidence/lighthouse-summary.json" ], "findingIds": [ "F-020" ] }, { "principleId": "follow-best-practices", "checkId": "no-console-errors", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "Lighthouse captured a console.error for a late-loading Mash module from an Amazon JavaScript asset.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-summary.json" ], "findingIds": [ "F-021" ] }, { "principleId": "follow-best-practices", "checkId": "sound-document-and-assets", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "The images primitive found 39/40 images without dimensions, 37 legacy-format images and two oversized images; Lighthouse also failed image aspect ratio and low-resolution image audits.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-images.json", "evidence/lighthouse-summary.json" ], "findingIds": [ "F-022" ] }, { "principleId": "follow-best-practices", "checkId": "browser-platform-hygiene", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "Lighthouse reported one deprecated-API warning and reduced the best-practices score to 0.69.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-home.json" ], "findingIds": [ "F-023" ] }, { "principleId": "be-discoverable", "checkId": "title-and-description", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "The route probes found a descriptive title on all pages but description=null on search results and basket.", "pathIds": [ "search" ], "artifacts": [ "evidence/search-page-probe.json", "evidence/cart-page-probe.json" ], "findingIds": [ "F-024" ] }, { "principleId": "be-discoverable", "checkId": "crawlable-and-mobile-friendly", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "The homepage had five javascript: links, product had 106, Lighthouse failed crawlable-anchors, and every representative template lacked a viewport meta declaration.", "pathIds": [ "home", "search", "product", "cart" ], "artifacts": [ "evidence/lighthouse-summary.json", "evidence/product-page-probe.json" ], "findingIds": [ "F-025" ] }, { "principleId": "be-discoverable", "checkId": "canonical-and-indexing-signals", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "Home and product had canonicals, but search had no canonical; no representative page exposed hreflang despite German and English variants. robots.txt itself was valid.", "pathIds": [ "home", "search", "product", "cart" ], "artifacts": [ "evidence/home-page-probe.json", "evidence/search-page-probe.json", "evidence/robots.txt" ], "findingIds": [ "F-026" ] }, { "principleId": "be-discoverable", "checkId": "structured-and-shareable-metadata", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "The product probe found no JSON-LD and no Open Graph tags despite a visible price, availability, ratings and product identity.", "pathIds": [ "product" ], "artifacts": [ "evidence/product-page-probe.json" ], "findingIds": [ "F-027" ] }, { "principleId": "be-private-and-secure", "checkId": "secure-transport-and-headers", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "HTTPS is used, but the headers primitive found no CSP, HSTS or nosniff; seven of nine cookies were flagged, including three non-Secure cookies and auth-like session identifiers without HttpOnly.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-headers.json", "evidence/home-cookies.json" ], "findingIds": [ "F-028" ] }, { "principleId": "be-private-and-secure", "checkId": "data-minimisation-and-third-parties", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "Before consent, HAR saw 282 cross-origin requests and 4.13 MB cross-origin transfer; the consent text names 129 advertising partners and Amazon telemetry origins were active.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json", "evidence/home-desktop.png" ], "findingIds": [ "F-029" ] }, { "principleId": "be-private-and-secure", "checkId": "in-context-permissions-and-modern-auth", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "The valid sign-in probe found username autocomplete but no passkey text, no WebAuthn signal, and a password field with no autocomplete token; no permission prompt appeared on load.", "pathIds": [ "signin" ], "artifacts": [ "evidence/signin-valid-probe.json", "evidence/signin-valid-mobile.png" ], "findingIds": [ "F-030" ] }, { "principleId": "be-private-and-secure", "checkId": "defensive-browser-policies", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "The main response exposed no frame protection, Referrer-Policy or Permissions-Policy in addition to missing CSP/HSTS; no frame-ancestors policy could be found.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-headers.json" ], "findingIds": [ "F-031" ] }, { "principleId": "be-resilient", "checkId": "progressive-enhancement", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "Discoverability fetched HTTP 202 with only 2,007 raw bytes: 1% content coverage, no raw title or description, and isJsShell=true; the product page was materially better at 61% coverage.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-discoverability.json", "evidence/home-discoverability-crawler.png", "evidence/product-discoverability.json" ], "findingIds": [ "F-032" ] }, { "principleId": "be-resilient", "checkId": "resilient-runtime-behaviour", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "Representative probes found 26-44 role dialogs with no native top-layer primitives, while the product DOM contained repeated issue-loading states.", "pathIds": [ "product" ], "artifacts": [ "evidence/product-page-probe.json", "evidence/home-page-probe.json" ], "findingIds": [ "F-033" ] }, { "principleId": "be-resilient", "checkId": "offline-and-installable", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from representative-route recon.", "evidence": "Anonymous product discovery is readable without an install surface, while purchase and account operations are intrinsically online transactions.", "reason": "Anonymous product discovery is readable without an install surface, while purchase and account operations are intrinsically online transactions.", "pathIds": [ "home" ] }, { "principleId": "be-resilient", "checkId": "network-and-http-failure-states", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "The product page repeatedly rendered “Sorry, there was a problem” and “Issue loading the information” without an adjacent retry control in the captured state.", "pathIds": [ "product" ], "artifacts": [ "evidence/product-page-probe.json", "evidence/product-mobile.png" ], "findingIds": [ "F-034" ] }, { "principleId": "be-internationalised", "checkId": "lang-dir-and-logical-properties", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "html lang=en-gb was valid, but probes found hundreds of left/right declarations and almost no logical-property usage; the English product route contains multiple German h1 sections.", "pathIds": [ "product" ], "artifacts": [ "evidence/home-page-probe.json", "evidence/product-page-probe.json" ], "findingIds": [ "F-035" ] }, { "principleId": "be-internationalised", "checkId": "locale-aware-data", "status": "pass", "confidence": "high", "method": "Reviewed English-localized price and date output.", "evidence": "The selected en-gb route consistently rendered euro prices and English delivery dates without ambiguous numeric-only formats.", "pathIds": [ "home" ], "artifacts": [ "evidence/product-mobile.png" ] }, { "principleId": "be-internationalised", "checkId": "time-zone-correctness", "status": "pass", "confidence": "high", "method": "Reviewed displayed delivery date/time concepts on the localized product route.", "evidence": "Delivery commitments were expressed as named weekdays and dates, with no ambiguous local timestamp or manual time-zone arithmetic exposed.", "pathIds": [ "home" ], "artifacts": [ "evidence/product-mobile.png" ] }, { "principleId": "be-trustworthy", "checkId": "no-dark-patterns", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "The cookie layer gives Accept a filled yellow primary style while Decline is a gray outline, covers half the desktop viewport, and describes sharing with 129 partners.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-desktop.png" ], "findingIds": [ "F-036" ] }, { "principleId": "be-trustworthy", "checkId": "humane-error-handling", "status": "pass", "confidence": "high", "method": "Reviewed tested forms and visible failure copy.", "evidence": "Search and add-to-basket completed without premature validation; visible product failure text was neutral rather than blaming the user.", "pathIds": [ "home" ], "artifacts": [ "evidence/flow-result.json", "evidence/product-page-probe.json" ] }, { "principleId": "be-trustworthy", "checkId": "trustworthy-input-assistance", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "The sign-in email uses autocomplete=username, but the password input has an empty autocomplete value and no passkey path is exposed.", "pathIds": [ "signin" ], "artifacts": [ "evidence/signin-valid-probe.json" ], "findingIds": [ "F-037" ] }, { "principleId": "be-trustworthy", "checkId": "safe-commercial-and-account-flows", "status": "pass", "confidence": "high", "method": "Replayed add-to-basket and inspected product/sign-in entry states.", "evidence": "Price, delivery, stock and Add to basket were visible before commitment; the add flow succeeded and sign-in terms were disclosed before continuation.", "pathIds": [ "home" ], "artifacts": [ "evidence/flow-result.json", "evidence/product-mobile.png", "evidence/signin-valid-mobile.png" ] }, { "principleId": "be-sustainable", "checkId": "optimised-assets", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "The image audit found 37/40 legacy formats, 39 missing dimensions, 26 missing srcset and 22 below-fold images without lazy loading.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-images.json" ], "findingIds": [ "F-038" ] }, { "principleId": "be-sustainable", "checkId": "no-wasteful-work", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "HAR recorded 289 requests and 4.35 MB; Lighthouse found 642 KiB unused JS and 207 KiB unused CSS, while telemetry endpoints made repeated background requests.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json", "evidence/lighthouse-summary.json" ], "findingIds": [ "F-039" ] }, { "principleId": "be-sustainable", "checkId": "third-party-and-media-budget", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "HAR attributed 4.13 MB to cross-origin resources, including 2.25 MB images and 735 KB across 21 fonts; 282 of 289 requests were cross-origin by host.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json", "evidence/home.har" ], "findingIds": [ "F-040" ] }, { "principleId": "be-agent-ready", "checkId": "structured-agent-capabilities", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against consulted Modern Web Guidance.", "evidence": "robots.txt disallows GPTBot, ClaudeBot, OAI-SearchBot, ChatGPT-User and many other agents; probes found no WebMCP, product JSON-LD or agentic tool registration.", "pathIds": [ "product" ], "artifacts": [ "evidence/robots.txt", "evidence/product-page-probe.json" ], "findingIds": [ "F-041" ] }, { "principleId": "be-agent-ready", "checkId": "on-device-inference", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from representative-route recon.", "evidence": "The site exposes a server-backed Rufus shopping assistant, but no page claim or tested task established that local inference was an appropriate requirement.", "reason": "The site exposes a server-backed Rufus shopping assistant, but no page claim or tested task established that local inference was an appropriate requirement.", "pathIds": [ "home" ] }, { "principleId": "be-memory-efficient", "checkId": "no-leak-under-repeated-interaction", "status": "pass", "confidence": "high", "method": "Compared baseline and post-interaction heap summaries after repeated menu toggling.", "evidence": "Post-interaction heap self-size fell from 27,874,900 to 27,077,022 bytes and node count from 447,224 to 416,744; no retained-growth signal appeared.", "pathIds": [ "home" ], "artifacts": [ "evidence/heap-baseline.json", "evidence/heap-after-menu.json" ] }, { "principleId": "be-memory-efficient", "checkId": "bounded-footprint", "status": "pass", "confidence": "high", "method": "Inspected heap totals and constructor distribution.", "evidence": "Heap self-size was about 27.9 MB on a media-rich commerce homepage; the distribution was dominated by native/code objects and was proportionate to the tested state.", "pathIds": [ "home" ], "artifacts": [ "evidence/heap-baseline.json" ] }, { "principleId": "be-memory-efficient", "checkId": "no-detached-dom-or-unbounded-listeners", "status": "pass", "confidence": "high", "method": "Compared heap type/constructor populations before and after repeated interaction.", "evidence": "The post-interaction snapshot had fewer total nodes and closures and no Detached* constructor appeared among the retained top constructors.", "pathIds": [ "home" ], "artifacts": [ "evidence/heap-baseline.json", "evidence/heap-after-menu.json" ] } ], "principleOutcomes": [ { "principleId": "respect-user-preferences", "expectation": "default", "status": "issues", "findingIds": [ "F-001" ] }, { "principleId": "implement-natural-interactions", "expectation": "default", "status": "issues", "findingIds": [ "F-002", "F-003" ] }, { "principleId": "provide-guided-navigation", "expectation": "default", "status": "issues", "findingIds": [ "F-004", "F-005" ] }, { "principleId": "maximize-content-reduce-noise", "expectation": "default", "status": "issues", "findingIds": [ "F-006", "F-007", "F-008" ] }, { "principleId": "adapt-to-the-form-factor", "expectation": "default", "status": "issues", "findingIds": [ "F-009", "F-010", "F-011" ] }, { "principleId": "support-core-task-success", "expectation": "default", "status": "issues", "findingIds": [ "F-012" ] }, { "principleId": "be-fast-and-stable", "expectation": "default", "status": "issues", "findingIds": [ "F-013", "F-014", "F-015", "F-016" ] }, { "principleId": "be-inclusive", "expectation": "default", "status": "issues", "findingIds": [ "F-017", "F-018", "F-019", "F-020" ] }, { "principleId": "follow-best-practices", "expectation": "default", "status": "issues", "findingIds": [ "F-021", "F-022", "F-023" ] }, { "principleId": "be-discoverable", "expectation": "default", "status": "issues", "findingIds": [ "F-024", "F-025", "F-026", "F-027" ] }, { "principleId": "be-private-and-secure", "expectation": "default", "status": "issues", "findingIds": [ "F-028", "F-029", "F-030", "F-031" ] }, { "principleId": "be-resilient", "expectation": "contextual", "status": "issues", "findingIds": [ "F-032", "F-033", "F-034" ] }, { "principleId": "be-internationalised", "expectation": "contextual", "status": "issues", "findingIds": [ "F-035" ] }, { "principleId": "be-trustworthy", "expectation": "default", "status": "issues", "findingIds": [ "F-036", "F-037" ] }, { "principleId": "be-sustainable", "expectation": "contextual", "status": "issues", "findingIds": [ "F-038", "F-039", "F-040" ] }, { "principleId": "be-agent-ready", "expectation": "contextual", "status": "issues", "findingIds": [ "F-041" ] }, { "principleId": "be-memory-efficient", "expectation": "default", "status": "pass" } ], "paths": [ { "id": "home", "description": "Homepage and global chrome, representing landing, navigation, consent and promotional modules. Excludes personalized signed-in content.", "url": "https://www.amazon.de/", "conditions": [ "desktop 1440x1000", "mobile 360x800", "dark mode", "reduced motion", "increased contrast", "no JavaScript crawler" ], "result": "issues" }, { "id": "search", "description": "Search results for “headphones”, representing listing, filtering and product discovery.", "url": "https://www.amazon.de/s?k=headphones", "conditions": [ "mobile 360x800", "keyboard focus probe" ], "result": "issues" }, { "id": "product", "description": "Representative product detail page, covering content, pricing, buying controls, metadata and partial module failures.", "url": "https://www.amazon.de/dp/B0CC2B8C37", "conditions": [ "desktop", "mobile 360x800", "no JavaScript crawler" ], "result": "issues" }, { "id": "cart", "description": "Anonymous empty basket, representing cart state and recovery/next actions.", "url": "https://www.amazon.de/gp/cart/view.html", "conditions": [ "mobile 360x800" ], "result": "issues" }, { "id": "add-to-cart", "description": "Recorded product-to-basket journey: decline cookies, add representative item, verify basket state.", "url": "https://www.amazon.de/dp/B0CC2B8C37", "conditions": [ "desktop 1440x1000" ], "result": "pass" }, { "id": "signin", "description": "Public sign-in entry, representing account authentication and autofill/passkey affordances. Credentials and post-auth checkout were intentionally not covered.", "url": "https://www.amazon.de/-/en/ap/signin", "conditions": [ "mobile 360x800" ], "result": "issues" } ], "findings": [ { "id": "F-001", "severity": "medium", "confidence": "high", "summary": "The storefront ignores the user’s dark-color preference.", "evidence": "Under emulated dark mode the page body remained rgb(255,255,255), text remained dark, color-scheme was normal, and the preference screenshot stayed light.", "suggestedFix": "Declare color-scheme and use prefers-color-scheme or light-dark() for all core surfaces.", "guidanceId": "dark-mode", "principleId": "respect-user-preferences", "principleCheckId": "respects-color-scheme", "artifacts": [ "evidence/preferences-probe.json", "evidence/home-preferences.png" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-002", "severity": "low", "confidence": "high", "summary": "Route and state changes are abrupt rather than transition-aware.", "evidence": "The four-route CSS/DOM probes found no view-transition declarations, while navigation between search, product and basket is a primary journey.", "suggestedFix": "Add cross-document View Transitions with a reduced-motion-safe fallback for stable shared elements.", "guidanceId": "cross-document-transitions", "principleId": "implement-natural-interactions", "principleCheckId": "view-transitions", "artifacts": [ "evidence/home-page-probe.json", "evidence/product-page-probe.json" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-003", "severity": "low", "confidence": "high", "summary": "Carousel-like and overlay interactions rely on legacy custom controls rather than platform-native gesture primitives.", "evidence": "Desktop and mobile screenshots show horizontal card rails and custom overlays; probes found no scroll-snap/modern declarative gesture signal and 26-44 custom role dialogs per route.", "suggestedFix": "Use scroll-snap and overscroll behavior for rails, and native top-layer primitives for gestures and overlays.", "guidanceId": "carousel-slide-effects", "principleId": "implement-natural-interactions", "principleCheckId": "physical-gestures", "artifacts": [ "evidence/home-desktop.png", "evidence/home-page-probe.json" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-004", "severity": "low", "confidence": "high", "summary": "The large site chrome does not adapt to scroll state.", "evidence": "The homepage screenshot shows two persistent navigation rows; CSS probes found no scroll-state or scroll-timeline technique on any representative route.", "suggestedFix": "Use a scroll-state container query or a compact sticky header after scrolling.", "guidanceId": "shrinking-header-on-scroll", "principleId": "provide-guided-navigation", "principleCheckId": "scroll-state-aware-chrome", "artifacts": [ "evidence/home-desktop.png", "evidence/home-page-probe.json" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-005", "severity": "medium", "confidence": "high", "summary": "Menus and popovers use custom positioned role-dialog structures without CSS anchor positioning.", "evidence": "Probes found 26-44 role=dialog elements, zero native dialogs/popovers, and no anchor-name, position-anchor or position-try declarations.", "suggestedFix": "Migrate transient menus to popover plus CSS anchor positioning and fallback positions.", "guidanceId": "position-aware-tooltips", "principleId": "provide-guided-navigation", "principleCheckId": "anchored-positioning", "artifacts": [ "evidence/home-page-probe.json", "evidence/product-page-probe.json" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-006", "severity": "high", "confidence": "high", "summary": "Two load-time interruptions obscure shopping content.", "evidence": "The first desktop capture shows a large cookie-consent layer covering the lower half of the viewport while a delivery-address popover covers the hero; the mobile capture also starts with the delivery overlay.", "suggestedFix": "Use a compact, content-preserving consent surface and defer the delivery prompt until location is needed.", "guidanceId": "light-dismiss-a-dialog", "principleId": "maximize-content-reduce-noise", "principleCheckId": "no-intrusive-interruptions", "artifacts": [ "evidence/home-desktop.png", "evidence/home-mobile.png" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-007", "severity": "medium", "confidence": "high", "summary": "Overlays are built from custom role dialogs rather than native dialog or popover primitives.", "evidence": "Across the representative pages probes counted 26-44 role dialogs but zero dialog, popover, or details elements.", "suggestedFix": "Use dialog for modal consent and popover for transient menus, retaining declarative light-dismiss and focus behavior.", "guidanceId": "declarative-dialog-popover-control", "principleId": "maximize-content-reduce-noise", "principleCheckId": "semantic-dismissible-primitives", "artifacts": [ "evidence/home-page-probe.json", "evidence/product-page-probe.json" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-008", "severity": "medium", "confidence": "high", "summary": "Dense navigation, promotions, badges and duplicated panels crowd the core content.", "evidence": "The homepage first viewport is dominated by two navigation bars, a campaign banner and four competing promotional cards; the product probe exposed 14 h1 elements and repeated sustainability/error panels.", "suggestedFix": "Reduce duplicated modules and visual framing, and prioritize one clear content hierarchy per template.", "guidanceId": "improve-text-layout-and-legibility", "principleId": "maximize-content-reduce-noise", "principleCheckId": "reduced-chrome", "artifacts": [ "evidence/home-preferences.png", "evidence/product-mobile.png" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-009", "severity": "critical", "confidence": "high", "summary": "The desktop storefront is scaled down instead of reflowing at a 360 px viewport.", "evidence": "The mobile layout reported no viewport meta, a 1000 px layout viewport and 640 px horizontal overflow on the homepage; all four page probes reported viewport=null.", "suggestedFix": "Add a valid width=device-width viewport declaration and ship layouts that reflow intrinsically at narrow widths.", "guidanceId": "fluid-scaling", "principleId": "adapt-to-the-form-factor", "principleCheckId": "responsive-no-horizontal-scroll", "artifacts": [ "evidence/home-layout-mobile.json", "evidence/home-mobile.png" ], "effort": "large", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-010", "severity": "medium", "confidence": "high", "summary": "Reusable cards and commerce panels do not demonstrate container-level adaptation.", "evidence": "Representative probes found no @container rules in authored inline styles and mobile screenshots show desktop grids scaled to fit rather than components reorganized for their available space.", "suggestedFix": "Use size container queries for product cards, buying panels and promotional modules.", "guidanceId": "size-aware-styling", "principleId": "adapt-to-the-form-factor", "principleCheckId": "component-level-responsiveness", "artifacts": [ "evidence/search-mobile.png", "evidence/product-mobile.png" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-011", "severity": "high", "confidence": "high", "summary": "Many controls are too small for touch and some keyboard focus indicators are absent.", "evidence": "The probes counted 45/171 small targets on home, 97/247 on search and 176/409 on product; Lighthouse failed target-size, and several focused shortcut/search controls had no outline or shadow.", "suggestedFix": "Provide at least 24 by 24 CSS px target space, prefer 44 px for primary controls, and guarantee visible :focus-visible styles.", "guidanceId": "accessibility", "principleId": "adapt-to-the-form-factor", "principleCheckId": "input-modality-aware", "artifacts": [ "evidence/lighthouse-summary.json", "evidence/product-page-probe.json" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-012", "severity": "medium", "confidence": "high", "summary": "Partial product failures are exposed without useful recovery actions.", "evidence": "The product DOM contains repeated “Sorry, there was a problem” and “Issue loading the information” headings, while the captured product view provides no adjacent retry control.", "suggestedFix": "Pair every failed module with concise state text and a retry, reload, or continue-without-it action.", "guidanceId": "persistent-toast-notifications", "principleId": "support-core-task-success", "principleCheckId": "clear-system-state-and-recovery", "artifacts": [ "evidence/product-page-probe.json", "evidence/product-mobile.png" ], "effort": "medium", "pathId": "product", "url": "https://www.amazon.de/dp/B0CC2B8C37" }, { "id": "F-013", "severity": "high", "confidence": "high", "summary": "Cold-load performance is well outside the good LCP range.", "evidence": "Lighthouse measured FCP 6.6 s, LCP 18.1 s, Speed Index 6.6 s and performance 0.56; the independent trace measured LCP 3.05 s under a lighter run.", "suggestedFix": "Prioritize the LCP asset, reduce initial request competition and defer noncritical modules.", "guidanceId": "performance", "principleId": "be-fast-and-stable", "principleCheckId": "good-core-web-vitals", "artifacts": [ "evidence/lighthouse-summary.json", "evidence/home-trace-summary.json" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-014", "severity": "medium", "confidence": "high", "summary": "The basket shifts visibly during load.", "evidence": "The 360 px basket layout observer measured CLS 0.1104 from two shifts, exceeding the good <=0.1 threshold; 39 of 40 homepage images lacked both dimensions.", "suggestedFix": "Reserve image and dynamic-module space with dimensions or aspect-ratio and keep late banners out of existing flow.", "guidanceId": "visually-stable-font-fallbacks", "principleId": "be-fast-and-stable", "principleCheckId": "visual-stability", "artifacts": [ "evidence/cart-layout-mobile.json", "evidence/home-images.json" ], "effort": "medium", "pathId": "cart", "url": "https://www.amazon.de/gp/cart/view.html" }, { "id": "F-015", "severity": "high", "confidence": "high", "summary": "The initial page has a heavy, render-blocking network dependency shape.", "evidence": "HAR captured 289 requests and 4.35 MB transferred, including five parser-inserted VeryHigh-priority stylesheets, 21 fonts and 219 images; Lighthouse LCP was 18.1 s.", "suggestedFix": "Inline only critical styles, subset fonts, lazy-load offscreen images and shorten the LCP dependency chain.", "guidanceId": "optimize-image-priority", "principleId": "be-fast-and-stable", "principleCheckId": "efficient-resource-delivery", "artifacts": [ "evidence/home-summary.json", "evidence/home.har" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-016", "severity": "high", "confidence": "high", "summary": "Large amounts of shipped JavaScript and CSS are unused on the initial view.", "evidence": "Lighthouse estimated 642 KiB unused JavaScript and 207 KiB unused CSS, including a 590 KiB WAF challenge script and feature bundles with 60-100% waste.", "suggestedFix": "Split bundles by template and interaction, conditionally load optional cards, and remove duplicated legacy assets.", "guidanceId": "identify-heavy-scripts", "principleId": "be-fast-and-stable", "principleCheckId": "trim-unused-and-duplicate-code", "artifacts": [ "evidence/lighthouse-summary.json", "evidence/home.har" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-017", "severity": "medium", "confidence": "high", "summary": "Accessible semantics are inconsistent on complex product and search surfaces.", "evidence": "Lighthouse failed aria-allowed-attr and label-content-name-mismatch; the product probe found 35 img elements without alt and the search probe found one.", "suggestedFix": "Correct role/ARIA combinations, align visible and accessible names, and provide meaningful or empty alt attributes.", "guidanceId": "accessibility", "principleId": "be-inclusive", "principleCheckId": "names-roles-labels", "artifacts": [ "evidence/lighthouse-home.json", "evidence/product-page-probe.json" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-018", "severity": "high", "confidence": "high", "summary": "Heading and landmark structure is malformed on key templates.", "evidence": "The product page exposed 14 h1 elements, search had no main landmark, and focused search/shortcut controls sometimes had neither outline nor box-shadow.", "suggestedFix": "Use one page h1, a sequential heading hierarchy, one main landmark, and consistent :focus-visible treatment.", "guidanceId": "accessibility", "principleId": "be-inclusive", "principleCheckId": "structure-and-focus", "artifacts": [ "evidence/product-page-probe.json", "evidence/search-page-probe.json" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-019", "severity": "high", "confidence": "high", "summary": "Narrow-screen text is rendered as tiny desktop content.", "evidence": "At 360 px, search and product pages are 1000 px desktop layouts scaled to 0.36; product descriptions and controls are visibly too small for comfortable reading.", "suggestedFix": "Reflow content at the device width and use fluid type and line lengths rather than page-wide scale-down.", "guidanceId": "improve-text-layout-and-legibility", "principleId": "be-inclusive", "principleCheckId": "legible-text", "artifacts": [ "evidence/search-mobile.png", "evidence/product-mobile.png" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-020", "severity": "high", "confidence": "high", "summary": "Mobile reflow and touch-target support fail the inclusive baseline.", "evidence": "All representative page probes lacked a viewport meta declaration; Lighthouse failed target-size and the mobile screenshots show desktop-scale layouts.", "suggestedFix": "Add a scalable viewport, reflow at 320-400 px widths, and increase target size/spacing without disabling zoom.", "guidanceId": "fluid-scaling", "principleId": "be-inclusive", "principleCheckId": "zoom-reflow-targets-and-media", "artifacts": [ "evidence/home-layout-mobile.json", "evidence/lighthouse-summary.json" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-021", "severity": "medium", "confidence": "high", "summary": "The homepage logs a production console error.", "evidence": "Lighthouse captured a console.error for a late-loading Mash module from an Amazon JavaScript asset.", "suggestedFix": "Remove the late module dependency race or downgrade expected telemetry to a non-error channel after handling it.", "guidanceId": "html", "principleId": "follow-best-practices", "principleCheckId": "no-console-errors", "artifacts": [ "evidence/lighthouse-summary.json" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-022", "severity": "medium", "confidence": "high", "summary": "Image sizing and document assets are not consistently sound.", "evidence": "The images primitive found 39/40 images without dimensions, 37 legacy-format images and two oversized images; Lighthouse also failed image aspect ratio and low-resolution image audits.", "suggestedFix": "Set intrinsic dimensions, preserve aspect ratios, and serve responsive modern image candidates.", "guidanceId": "optimize-image-priority", "principleId": "follow-best-practices", "principleCheckId": "sound-document-and-assets", "artifacts": [ "evidence/home-images.json", "evidence/lighthouse-summary.json" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-023", "severity": "medium", "confidence": "high", "summary": "Deprecated API use remains in production.", "evidence": "Lighthouse reported one deprecated-API warning and reduced the best-practices score to 0.69.", "suggestedFix": "Replace the deprecated API with its Baseline-supported platform equivalent and keep deprecation monitoring in CI.", "guidanceId": "html", "principleId": "follow-best-practices", "principleCheckId": "browser-platform-hygiene", "artifacts": [ "evidence/lighthouse-home.json" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-024", "severity": "medium", "confidence": "high", "summary": "Search and basket templates omit meta descriptions.", "evidence": "The route probes found a descriptive title on all pages but description=null on search results and basket.", "suggestedFix": "Generate unique descriptions for public listing templates; keep private basket routes intentionally excluded from indexing.", "guidanceId": "html", "principleId": "be-discoverable", "principleCheckId": "title-and-description", "artifacts": [ "evidence/search-page-probe.json", "evidence/cart-page-probe.json" ], "effort": "medium", "pathId": "search", "url": "https://www.amazon.de/s?k=headphones" }, { "id": "F-025", "severity": "high", "confidence": "high", "summary": "The site is neither consistently crawlable nor mobile-friendly.", "evidence": "The homepage had five javascript: links, product had 106, Lighthouse failed crawlable-anchors, and every representative template lacked a viewport meta declaration.", "suggestedFix": "Use real href destinations for navigation and add a device-width viewport with responsive reflow.", "guidanceId": "html", "principleId": "be-discoverable", "principleCheckId": "crawlable-and-mobile-friendly", "artifacts": [ "evidence/lighthouse-summary.json", "evidence/product-page-probe.json" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-026", "severity": "medium", "confidence": "high", "summary": "Indexing signals are inconsistent across localized and listing pages.", "evidence": "Home and product had canonicals, but search had no canonical; no representative page exposed hreflang despite German and English variants. robots.txt itself was valid.", "suggestedFix": "Add stable canonicals to public listings and reciprocal hreflang for localized variants.", "guidanceId": "html", "principleId": "be-discoverable", "principleCheckId": "canonical-and-indexing-signals", "artifacts": [ "evidence/home-page-probe.json", "evidence/search-page-probe.json", "evidence/robots.txt" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-027", "severity": "high", "confidence": "high", "summary": "Product pages lack structured product and social-preview metadata.", "evidence": "The product probe found no JSON-LD and no Open Graph tags despite a visible price, availability, ratings and product identity.", "suggestedFix": "Emit accurate schema.org Product/Offer JSON-LD plus Open Graph metadata that matches visible content.", "guidanceId": "html", "principleId": "be-discoverable", "principleCheckId": "structured-and-shareable-metadata", "artifacts": [ "evidence/product-page-probe.json" ], "effort": "medium", "pathId": "product", "url": "https://www.amazon.de/dp/B0CC2B8C37" }, { "id": "F-028", "severity": "high", "confidence": "high", "summary": "Core transport defenses and cookie attributes are incomplete.", "evidence": "HTTPS is used, but the headers primitive found no CSP, HSTS or nosniff; seven of nine cookies were flagged, including three non-Secure cookies and auth-like session identifiers without HttpOnly.", "suggestedFix": "Deploy HSTS, a restrictive CSP and nosniff, and review every cookie for Secure, HttpOnly and least-permissive SameSite.", "guidanceId": "security", "principleId": "be-private-and-secure", "principleCheckId": "secure-transport-and-headers", "artifacts": [ "evidence/home-headers.json", "evidence/home-cookies.json" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-029", "severity": "high", "confidence": "high", "summary": "The anonymous homepage has a large telemetry and third-party footprint.", "evidence": "Before consent, HAR saw 282 cross-origin requests and 4.13 MB cross-origin transfer; the consent text names 129 advertising partners and Amazon telemetry origins were active.", "suggestedFix": "Block nonessential collection until consent, reduce event volume, batch telemetry and document each third-party purpose.", "guidanceId": "privacy", "principleId": "be-private-and-secure", "principleCheckId": "data-minimisation-and-third-parties", "artifacts": [ "evidence/home-summary.json", "evidence/home-desktop.png" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-030", "severity": "medium", "confidence": "high", "summary": "The sign-in entry point is password-oriented and exposes no passkey option.", "evidence": "The valid sign-in probe found username autocomplete but no passkey text, no WebAuthn signal, and a password field with no autocomplete token; no permission prompt appeared on load.", "suggestedFix": "Offer passkey/WebAuthn sign-in and set current-password autocomplete only as a fallback path.", "guidanceId": "passkey-authentication", "principleId": "be-private-and-secure", "principleCheckId": "in-context-permissions-and-modern-auth", "artifacts": [ "evidence/signin-valid-probe.json", "evidence/signin-valid-mobile.png" ], "effort": "medium", "pathId": "signin", "url": "https://www.amazon.de/-/en/ap/signin" }, { "id": "F-031", "severity": "high", "confidence": "high", "summary": "Browser-enforced defensive policies are absent.", "evidence": "The main response exposed no frame protection, Referrer-Policy or Permissions-Policy in addition to missing CSP/HSTS; no frame-ancestors policy could be found.", "suggestedFix": "Set CSP frame-ancestors, Referrer-Policy, Permissions-Policy and appropriate origin isolation/Trusted Types controls.", "guidanceId": "security", "principleId": "be-private-and-secure", "principleCheckId": "defensive-browser-policies", "artifacts": [ "evidence/home-headers.json" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-032", "severity": "high", "confidence": "high", "summary": "The public homepage is effectively unavailable to a non-JavaScript generic crawler.", "evidence": "Discoverability fetched HTTP 202 with only 2,007 raw bytes: 1% content coverage, no raw title or description, and isJsShell=true; the product page was materially better at 61% coverage.", "suggestedFix": "Return meaningful server-rendered navigation and homepage content before enhancement, including through bot/WAF handling.", "guidanceId": "stabilize-reactive-state", "principleId": "be-resilient", "principleCheckId": "progressive-enhancement", "artifacts": [ "evidence/home-discoverability.json", "evidence/home-discoverability-crawler.png", "evidence/product-discoverability.json" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-033", "severity": "medium", "confidence": "high", "summary": "Custom overlays and asynchronously loaded product modules are fragile.", "evidence": "Representative probes found 26-44 role dialogs with no native top-layer primitives, while the product DOM contained repeated issue-loading states.", "suggestedFix": "Use resilient native top-layer primitives, position fallbacks and conditional async loading with stable fallback content.", "guidanceId": "resilient-context-menus-and-nested-dropdowns", "principleId": "be-resilient", "principleCheckId": "resilient-runtime-behaviour", "artifacts": [ "evidence/product-page-probe.json", "evidence/home-page-probe.json" ], "effort": "medium", "pathId": "product", "url": "https://www.amazon.de/dp/B0CC2B8C37" }, { "id": "F-034", "severity": "medium", "confidence": "high", "summary": "Network-backed product module failures do not present actionable recovery.", "evidence": "The product page repeatedly rendered “Sorry, there was a problem” and “Issue loading the information” without an adjacent retry control in the captured state.", "suggestedFix": "Add bounded timeouts and explicit Retry/Continue actions while preserving the product and basket context.", "guidanceId": "conditional-async-dependencies", "principleId": "be-resilient", "principleCheckId": "network-and-http-failure-states", "artifacts": [ "evidence/product-page-probe.json", "evidence/product-mobile.png" ], "effort": "medium", "pathId": "product", "url": "https://www.amazon.de/dp/B0CC2B8C37" }, { "id": "F-035", "severity": "medium", "confidence": "high", "summary": "Localized pages rely overwhelmingly on physical CSS and mix languages within the product experience.", "evidence": "html lang=en-gb was valid, but probes found hundreds of left/right declarations and almost no logical-property usage; the English product route contains multiple German h1 sections.", "suggestedFix": "Use logical properties and mark language changes on translated product modules.", "guidanceId": "translator", "principleId": "be-internationalised", "principleCheckId": "lang-dir-and-logical-properties", "artifacts": [ "evidence/home-page-probe.json", "evidence/product-page-probe.json" ], "effort": "medium", "pathId": "product", "url": "https://www.amazon.de/dp/B0CC2B8C37" }, { "id": "F-036", "severity": "medium", "confidence": "high", "summary": "Consent choices are visually asymmetric and interrupt the task.", "evidence": "The cookie layer gives Accept a filled yellow primary style while Decline is a gray outline, covers half the desktop viewport, and describes sharing with 129 partners.", "suggestedFix": "Give accept and reject equal visual weight, shorten the initial explanation, and keep granular controls one step away.", "guidanceId": "custom-button-actions", "principleId": "be-trustworthy", "principleCheckId": "no-dark-patterns", "artifacts": [ "evidence/home-desktop.png" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-037", "severity": "medium", "confidence": "high", "summary": "Authentication autofill metadata is incomplete.", "evidence": "The sign-in email uses autocomplete=username, but the password input has an empty autocomplete value and no passkey path is exposed.", "suggestedFix": "Use current-password for the password fallback and support passkeys; retain correct username metadata.", "guidanceId": "autofill-sign-in-form", "principleId": "be-trustworthy", "principleCheckId": "trustworthy-input-assistance", "artifacts": [ "evidence/signin-valid-probe.json" ], "effort": "medium", "pathId": "signin", "url": "https://www.amazon.de/-/en/ap/signin" }, { "id": "F-038", "severity": "high", "confidence": "high", "summary": "The image estate is dominated by legacy, unreserved and non-responsive assets.", "evidence": "The image audit found 37/40 legacy formats, 39 missing dimensions, 26 missing srcset and 22 below-fold images without lazy loading.", "suggestedFix": "Serve AVIF/WebP responsive candidates, reserve dimensions and lazy-load noncritical imagery.", "guidanceId": "deliver-optimized-decorative-images", "principleId": "be-sustainable", "principleCheckId": "optimised-assets", "artifacts": [ "evidence/home-images.json" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-039", "severity": "high", "confidence": "high", "summary": "The initial view performs disproportionate network and code work.", "evidence": "HAR recorded 289 requests and 4.35 MB; Lighthouse found 642 KiB unused JS and 207 KiB unused CSS, while telemetry endpoints made repeated background requests.", "suggestedFix": "Conditionally load modules, batch/deprioritize telemetry and remove work with no first-view user value.", "guidanceId": "deprioritize-background-fetches", "principleId": "be-sustainable", "principleCheckId": "no-wasteful-work", "artifacts": [ "evidence/home-summary.json", "evidence/lighthouse-summary.json" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-040", "severity": "high", "confidence": "high", "summary": "Third-party, font and media costs are not proportionate to the first view.", "evidence": "HAR attributed 4.13 MB to cross-origin resources, including 2.25 MB images and 735 KB across 21 fonts; 282 of 289 requests were cross-origin by host.", "suggestedFix": "Set a route budget, reduce font variants, defer offscreen media and hold third-party work behind consent and interaction.", "guidanceId": "efficient-background-processing", "principleId": "be-sustainable", "principleCheckId": "third-party-and-media-budget", "artifacts": [ "evidence/home-summary.json", "evidence/home.har" ], "effort": "medium", "pathId": "home", "url": "https://www.amazon.de/" }, { "id": "F-041", "severity": "high", "confidence": "high", "summary": "The commerce surface is deliberately opaque to agents and exposes no structured action interface.", "evidence": "robots.txt disallows GPTBot, ClaudeBot, OAI-SearchBot, ChatGPT-User and many other agents; probes found no WebMCP, product JSON-LD or agentic tool registration.", "suggestedFix": "For approved agents, expose scoped WebMCP commerce tools and machine-readable product/actions with explicit authorization boundaries.", "guidanceId": "webmcp", "principleId": "be-agent-ready", "principleCheckId": "structured-agent-capabilities", "artifacts": [ "evidence/robots.txt", "evidence/product-page-probe.json" ], "effort": "medium", "pathId": "product", "url": "https://www.amazon.de/dp/B0CC2B8C37" } ], "taskList": [ { "id": "T-009", "title": "Add a valid width=device-width viewport declaration and ship layouts that reflow intrinsically at narrow widths.", "priority": 1, "findingIds": [ "F-009" ], "guidanceId": "fluid-scaling", "status": "open" }, { "id": "T-006", "title": "Use a compact, content-preserving consent surface and defer the delivery prompt until location is needed.", "priority": 2, "findingIds": [ "F-006" ], "guidanceId": "light-dismiss-a-dialog", "status": "open" }, { "id": "T-011", "title": "Provide at least 24 by 24 CSS px target space, prefer 44 px for primary controls, and guarantee visible :focus-visible styles.", "priority": 3, "findingIds": [ "F-011" ], "guidanceId": "accessibility", "status": "open" }, { "id": "T-013", "title": "Prioritize the LCP asset, reduce initial request competition and defer noncritical modules.", "priority": 4, "findingIds": [ "F-013" ], "guidanceId": "performance", "status": "open" }, { "id": "T-015", "title": "Inline only critical styles, subset fonts, lazy-load offscreen images and shorten the LCP dependency chain.", "priority": 5, "findingIds": [ "F-015" ], "guidanceId": "optimize-image-priority", "status": "open" }, { "id": "T-016", "title": "Split bundles by template and interaction, conditionally load optional cards, and remove duplicated legacy assets.", "priority": 6, "findingIds": [ "F-016" ], "guidanceId": "identify-heavy-scripts", "status": "open" }, { "id": "T-018", "title": "Use one page h1, a sequential heading hierarchy, one main landmark, and consistent :focus-visible treatment.", "priority": 7, "findingIds": [ "F-018" ], "guidanceId": "accessibility", "status": "open" }, { "id": "T-019", "title": "Reflow content at the device width and use fluid type and line lengths rather than page-wide scale-down.", "priority": 8, "findingIds": [ "F-019" ], "guidanceId": "improve-text-layout-and-legibility", "status": "open" }, { "id": "T-020", "title": "Add a scalable viewport, reflow at 320-400 px widths, and increase target size/spacing without disabling zoom.", "priority": 9, "findingIds": [ "F-020" ], "guidanceId": "fluid-scaling", "status": "open" }, { "id": "T-025", "title": "Use real href destinations for navigation and add a device-width viewport with responsive reflow.", "priority": 10, "findingIds": [ "F-025" ], "guidanceId": "html", "status": "open" }, { "id": "T-027", "title": "Emit accurate schema.org Product/Offer JSON-LD plus Open Graph metadata that matches visible content.", "priority": 11, "findingIds": [ "F-027" ], "guidanceId": "html", "status": "open" }, { "id": "T-028", "title": "Deploy HSTS, a restrictive CSP and nosniff, and review every cookie for Secure, HttpOnly and least-permissive SameSite.", "priority": 12, "findingIds": [ "F-028" ], "guidanceId": "security", "status": "open" }, { "id": "T-029", "title": "Block nonessential collection until consent, reduce event volume, batch telemetry and document each third-party purpose.", "priority": 13, "findingIds": [ "F-029" ], "guidanceId": "privacy", "status": "open" }, { "id": "T-031", "title": "Set CSP frame-ancestors, Referrer-Policy, Permissions-Policy and appropriate origin isolation/Trusted Types controls.", "priority": 14, "findingIds": [ "F-031" ], "guidanceId": "security", "status": "open" }, { "id": "T-032", "title": "Return meaningful server-rendered navigation and homepage content before enhancement, including through bot/WAF handling.", "priority": 15, "findingIds": [ "F-032" ], "guidanceId": "stabilize-reactive-state", "status": "open" }, { "id": "T-038", "title": "Serve AVIF/WebP responsive candidates, reserve dimensions and lazy-load noncritical imagery.", "priority": 16, "findingIds": [ "F-038" ], "guidanceId": "deliver-optimized-decorative-images", "status": "open" }, { "id": "T-039", "title": "Conditionally load modules, batch/deprioritize telemetry and remove work with no first-view user value.", "priority": 17, "findingIds": [ "F-039" ], "guidanceId": "deprioritize-background-fetches", "status": "open" }, { "id": "T-040", "title": "Set a route budget, reduce font variants, defer offscreen media and hold third-party work behind consent and interaction.", "priority": 18, "findingIds": [ "F-040" ], "guidanceId": "efficient-background-processing", "status": "open" }, { "id": "T-041", "title": "For approved agents, expose scoped WebMCP commerce tools and machine-readable product/actions with explicit authorization boundaries.", "priority": 19, "findingIds": [ "F-041" ], "guidanceId": "webmcp", "status": "open" }, { "id": "T-001", "title": "Declare color-scheme and use prefers-color-scheme or light-dark() for all core surfaces.", "priority": 20, "findingIds": [ "F-001" ], "guidanceId": "dark-mode", "status": "open" }, { "id": "T-005", "title": "Migrate transient menus to popover plus CSS anchor positioning and fallback positions.", "priority": 21, "findingIds": [ "F-005" ], "guidanceId": "position-aware-tooltips", "status": "open" }, { "id": "T-007", "title": "Use dialog for modal consent and popover for transient menus, retaining declarative light-dismiss and focus behavior.", "priority": 22, "findingIds": [ "F-007" ], "guidanceId": "declarative-dialog-popover-control", "status": "open" }, { "id": "T-008", "title": "Reduce duplicated modules and visual framing, and prioritize one clear content hierarchy per template.", "priority": 23, "findingIds": [ "F-008" ], "guidanceId": "improve-text-layout-and-legibility", "status": "open" }, { "id": "T-010", "title": "Use size container queries for product cards, buying panels and promotional modules.", "priority": 24, "findingIds": [ "F-010" ], "guidanceId": "size-aware-styling", "status": "open" }, { "id": "T-012", "title": "Pair every failed module with concise state text and a retry, reload, or continue-without-it action.", "priority": 25, "findingIds": [ "F-012" ], "guidanceId": "persistent-toast-notifications", "status": "open" }, { "id": "T-014", "title": "Reserve image and dynamic-module space with dimensions or aspect-ratio and keep late banners out of existing flow.", "priority": 26, "findingIds": [ "F-014" ], "guidanceId": "visually-stable-font-fallbacks", "status": "open" }, { "id": "T-017", "title": "Correct role/ARIA combinations, align visible and accessible names, and provide meaningful or empty alt attributes.", "priority": 27, "findingIds": [ "F-017" ], "guidanceId": "accessibility", "status": "open" }, { "id": "T-021", "title": "Remove the late module dependency race or downgrade expected telemetry to a non-error channel after handling it.", "priority": 28, "findingIds": [ "F-021" ], "guidanceId": "html", "status": "open" }, { "id": "T-022", "title": "Set intrinsic dimensions, preserve aspect ratios, and serve responsive modern image candidates.", "priority": 29, "findingIds": [ "F-022" ], "guidanceId": "optimize-image-priority", "status": "open" }, { "id": "T-023", "title": "Replace the deprecated API with its Baseline-supported platform equivalent and keep deprecation monitoring in CI.", "priority": 30, "findingIds": [ "F-023" ], 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