{ "url": "https://www.amazon.ca", "auditedAt": "2026-07-28T09:42:36.188Z", "mode": "report", "status": "completed", "statusDetail": "Atomic coverage complete. Search, product, cart, and sign-in failures were observed as direct core-flow issues rather than omitted checks.", "page": { "appType": "mpa", "framework": "Amazon AUI / server-rendered MPA with client modules and service worker", "notes": "Public Canadian commerce storefront. Homepage was accessible; representative search, product, cart and sign-in routes failed or challenged fresh browser sessions. Covered homepage, search, one product detail, cart, sign-in, and a synthetic not-found state. Not covered: authenticated account, payment submission, order placement, cancellation/returns completion, and additional category/detail templates because sign-in and purchase routes were unavailable and no destructive or real transaction was attempted." }, "evidenceUsed": [ "screenshot", "dom", "layout-metrics", "evaluate-probe", "trace", "har", "discoverability", "headers", "cookies", "trackers", "secrets", "images", "heap-summary", "Lighthouse", "curl robots/headers", "Modern Web Guidance search/retrieve" ], "guidanceConsulted": [ "fluid-scaling", "forms", "html", "autofill-payment-form", "accessibility", "performance", "optimize-image-priority", "security", "privacy", "passkeys", "deliver-optimized-decorative-images", "deprioritize-background-fetches", "dark-mode", "light-dismiss-a-dialog", "declarative-dialog-popover-control", "defer-rendering-heavy-content", "break-up-long-tasks", "identify-heavy-scripts", "webmcp", "same-document-transitions", "carousel-slide-effects", "shrinking-header-on-scroll", "position-aware-tooltips", "component-specific-light-dark-theme", "cross-document-transitions", "scroll-entry-exit-effects", "size-aware-styling" ], "artifacts": [ { "type": "screenshot", "path": "evidence/home-desktop.png", "caption": "Initial desktop homepage with dense retail cards and an interest-based ads notice." }, { "type": "screenshot", "path": "evidence/home-mobile.png", "caption": "Homepage at a 360x800 visual viewport; desktop-width content remains and is clipped." }, { "type": "layout", "path": "evidence/home-mobile-layout.json", "caption": "Mobile layout metrics reporting no viewport meta and 640px horizontal overflow." }, { "type": "screenshot", "path": "evidence/home-dark.png", "caption": "Homepage under prefers-color-scheme: dark; main surfaces remain light." }, { "type": "screenshot", "path": "evidence/home-high-contrast.png", "caption": "Homepage under prefers-contrast: more." }, { "type": "other", "path": "evidence/home-motion.json", "caption": "Reduced-motion animation and feature probe." }, { "type": "other", "path": "evidence/home-images.json", "caption": "Image audit covering dimensions, lazy loading, responsive sources, formats, and alt text." }, { "type": "har", "path": "evidence/home.har", "caption": "Raw HAR for the homepage load." }, { "type": "other", "path": "evidence/home-summary.json", "caption": "Compact HAR summary: 292 requests and 5.39 MB transferred." }, { "type": "trace", "path": "evidence/home-trace.json", "caption": "DevTools performance trace." }, { "type": "trace-summary", "path": "evidence/home-trace-summary.json", "caption": "Trace summary with LCP 3.40s and two long tasks." }, { "type": "lighthouse", "path": "evidence/home-lighthouse.json", "caption": "Lighthouse JSON for mobile performance, accessibility, best practices, SEO, and agentic browsing." }, { "type": "lighthouse", "path": "evidence/home-lighthouse-summary.json", "caption": "Compact Lighthouse summary and failed audits." }, { "type": "other", "path": "evidence/home-headers.json", "caption": "CDP response-header audit." }, { "type": "other", "path": "evidence/home-curl-headers.txt", "caption": "Direct main-document response headers, confirming HSTS while other policies are absent." }, { "type": "other", "path": "evidence/home-cookies.json", "caption": "Cookie security audit." }, { "type": "other", "path": "evidence/home-trackers.json", "caption": "Third-party-origin and tracker enumeration." }, { "type": "other", "path": "evidence/home-secrets.json", "caption": "Client-side secret scan with no sensitive findings." }, { "type": "discoverability", "path": "evidence/home-discoverability.json", "caption": "Raw-HTML versus rendered-content discoverability comparison." }, { "type": "screenshot", "path": "evidence/home-discoverability-rendered.png", "caption": "Browser-rendered homepage view." }, { "type": "screenshot", "path": "evidence/home-discoverability-crawler.png", "caption": "Crawler/no-JavaScript homepage view." }, { "type": "dom", "path": "evidence/home-dom.json", "caption": "Rendered homepage DOM, styles, and computed-style evidence." }, { "type": "other", "path": "evidence/home-recon.json", "caption": "Homepage metadata, language, canonical URL, links, forms, manifest, and service-worker recon." }, { "type": "other", "path": "evidence/home-platform.json", "caption": "Document semantics, overlay primitives, metadata, and explicit focus-style probes." }, { "type": "other", "path": "evidence/home-runtime.json", "caption": "Runtime, memory, DOM count, control-size, service-worker, and manifest probe." }, { "type": "heap", "path": "evidence/home-heap.json", "caption": "Baseline heap summary." }, { "type": "heap", "path": "evidence/home-heap-post-menu.json", "caption": "Heap summary after opening and closing the navigation drawer ten times." }, { "type": "screenshot", "path": "evidence/search-desktop.png", "caption": "Search route generic error response." }, { "type": "dom", "path": "evidence/search-dom.json", "caption": "Search error-page DOM." }, { "type": "screenshot", "path": "evidence/product-desktop.png", "caption": "Product route automated-access challenge." }, { "type": "screenshot", "path": "evidence/product-mobile.png", "caption": "Product challenge at a narrow viewport." }, { "type": "dom", "path": "evidence/product-dom.json", "caption": "Product challenge DOM." }, { "type": "screenshot", "path": "evidence/cart.png", "caption": "Cart route generic error response." }, { "type": "screenshot", "path": "evidence/signin.png", "caption": "Sign-in route not-found response." }, { "type": "dom", "path": "evidence/signin-dom.json", "caption": "Sign-in route probe." }, { "type": "other", "path": "evidence/not-found.json", "caption": "Synthetic failure-state DOM and recovery-link probe." }, { "type": "other", "path": "evidence/robots.txt", "caption": "Current robots.txt response, including explicit GPTBot exclusion." }, { "type": "other", "path": "coverage-manifest.json", "caption": "Atomic 58-check coverage manifest used for planning." } ], "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 mapped Modern Web Guidance.", "evidence": "The dark-mode screenshot remains white/light grey and the computed body color-scheme is normal; no prefers-color-scheme rules were found.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dark.png", "evidence/home-dom.json" ], "findingIds": [ "AMZ-001" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-reduced-motion", "status": "pass", "confidence": "medium", "method": "evaluate under prefers-reduced-motion: reduce", "evidence": "Reduced-motion emulation matched and document.getAnimations() returned no active animations.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-motion.json" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-contrast", "status": "pass", "confidence": "medium", "method": "prefers-contrast screenshot plus Lighthouse contrast audit", "evidence": "High-contrast screenshot remains legible and Lighthouse color-contrast audit passed.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-high-contrast.png" ] }, { "principleId": "implement-natural-interactions", "checkId": "view-transitions", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "Rendered CSS only contains reset-to-unset view-transition declarations; search/product journeys replace the page abruptly with error or challenge screens.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dom.json", "evidence/product-desktop.png" ], "findingIds": [ "AMZ-002" ] }, { "principleId": "implement-natural-interactions", "checkId": "scroll-driven-animations", "status": "pass", "confidence": "medium", "method": "DOM CSS inspection and animation probe", "evidence": "CSS/animation probe found no active scroll-linked animation or scroll event-driven visual effect to implement incorrectly.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-motion.json" ] }, { "principleId": "implement-natural-interactions", "checkId": "physical-gestures", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "The homepage hero is an arrow-driven carousel; DOM/CSS inspection found no active scroll-snap or overscroll gesture rules, only reset declarations.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-desktop.png", "evidence/home-dom.json" ], "findingIds": [ "AMZ-003" ] }, { "principleId": "provide-guided-navigation", "checkId": "scroll-state-aware-chrome", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "The long homepage keeps a fixed two-row header and no animation-timeline or scroll-state query was found in captured CSS.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-desktop.png", "evidence/home-dom.json" ], "findingIds": [ "AMZ-004" ] }, { "principleId": "provide-guided-navigation", "checkId": "anchored-positioning", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "The platform probe found 27 role=dialog elements, zero native dialogs/popovers, and no active anchor positioning declarations.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-platform.json", "evidence/home-dom.json" ], "findingIds": [ "AMZ-005" ] }, { "principleId": "provide-guided-navigation", "checkId": "directs-attention", "status": "pass", "confidence": "medium", "method": "visual inspection and DOM focus/landmark probe", "evidence": "Visible carousel arrows, descriptive navigation labels, and a skip-to-main link provide location and movement cues.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-desktop.png" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "no-intrusive-interruptions", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "The initial screenshot shows a fixed notice covering the lower page before interaction, including product cards.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-desktop.png" ], "findingIds": [ "AMZ-006" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "semantic-dismissible-primitives", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "The notice is a form role=dialog; the probe found zero , popover, or details elements and 27 custom role=dialog nodes.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-platform.json", "evidence/home-dom.json" ], "findingIds": [ "AMZ-007" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "reduced-chrome", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "Desktop evidence shows two navigation rows, a large hero, four dense merchandising cards, and a fixed notice in one viewport; mobile retains a 1000px desktop canvas.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-desktop.png", "evidence/home-mobile.png" ], "findingIds": [ "AMZ-008" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "responsive-no-horizontal-scroll", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "At 360x800, layout reported no viewport meta, a 1000px inner layout, and 640px overflow; the screenshot shows clipped desktop content.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-mobile.png", "evidence/home-mobile-layout.json" ], "findingIds": [ "AMZ-009" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "component-level-responsiveness", "status": "pass", "confidence": "medium", "method": "rendered CSS inspection", "evidence": "Captured CSS includes container-type:inline-size and @container rules for the Rufus/card layout.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dom.json" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "input-modality-aware", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "Explicit focus probes reported outline:none/0px on search, cart, hamburger, account, and the privacy Continue Shopping control; tiny 8x4px disclosure buttons were also found.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-platform.json", "evidence/home-runtime.json" ], "findingIds": [ "AMZ-010" ] }, { "principleId": "support-core-task-success", "checkId": "clear-purpose-and-primary-action", "status": "pass", "confidence": "medium", "method": "first-viewport screenshot and DOM labels", "evidence": "Amazon branding, a dominant labelled search field, category navigation, and product cards make shopping purpose and next actions immediately clear.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-desktop.png" ] }, { "principleId": "support-core-task-success", "checkId": "primary-flow-completion", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "Search returned “Something went wrong”, product detail returned an automated-access challenge, cart returned the same generic error, and sign-in returned not-found.", "pathIds": [ "home" ], "artifacts": [ "evidence/search-desktop.png", "evidence/product-desktop.png", "evidence/cart.png", "evidence/signin.png" ], "findingIds": [ "AMZ-011" ] }, { "principleId": "support-core-task-success", "checkId": "clear-system-state-and-recovery", "status": "pass", "confidence": "medium", "method": "failure-route screenshots and DOM", "evidence": "Search/cart error screens are explicit, bilingual, and link back home; the product challenge offers Continue Shopping.", "pathIds": [ "search" ], "artifacts": [ "evidence/search-desktop.png" ] }, { "principleId": "be-fast-and-stable", "checkId": "good-core-web-vitals", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "Lighthouse measured LCP 10.54s, FCP 6.03s, Speed Index 11.04s, TTI 16.42s, and performance 54; trace LCP was 3.40s in a separate desktop-like run.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-lighthouse-summary.json", "evidence/home-trace-summary.json" ], "findingIds": [ "AMZ-012" ] }, { "principleId": "be-fast-and-stable", "checkId": "visual-stability", "status": "pass", "confidence": "medium", "method": "layout observer and Lighthouse", "evidence": "Layout observer and Lighthouse both measured CLS 0 in captured runs.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-mobile-layout.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-main-thread", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "Lighthouse measured 179.5ms TBT and 300ms max potential FID; the trace observed two long tasks up to 66.12ms.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-lighthouse-summary.json", "evidence/home-trace-summary.json" ], "findingIds": [ "AMZ-013" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-resource-delivery", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "HAR captured 292 requests and 5.39MB transferred, including 223 images, 22 fonts, and multiple VeryHigh parser-blocking stylesheets.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json", "evidence/home.har" ], "findingIds": [ "AMZ-014" ] }, { "principleId": "be-fast-and-stable", "checkId": "trim-unused-and-duplicate-code", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "Lighthouse estimated 438KiB unused JavaScript and 213KiB unused CSS; HAR recorded 882.7KB script transfer.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-lighthouse.json", "evidence/home-summary.json" ], "findingIds": [ "AMZ-015" ] }, { "principleId": "be-inclusive", "checkId": "names-roles-labels", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "Lighthouse found disallowed aria-expanded on the searchbox, aria-setsize on a list, and an accessible-name mismatch on Cart.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-lighthouse-summary.json" ], "findingIds": [ "AMZ-016" ] }, { "principleId": "be-inclusive", "checkId": "sufficient-contrast", "status": "pass", "confidence": "medium", "method": "Lighthouse and screenshot", "evidence": "Lighthouse color-contrast audit scored 1 and the contrast-emulated screenshot remained readable.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-high-contrast.png" ] }, { "principleId": "be-inclusive", "checkId": "structure-and-focus", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "The rendered homepage has no h1 and explicit probes show most primary controls with no visible outline, despite skip links and landmarks.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-platform.json", "evidence/home-lighthouse-summary.json" ], "findingIds": [ "AMZ-017" ] }, { "principleId": "be-inclusive", "checkId": "legible-text", "status": "pass", "confidence": "medium", "method": "visual review", "evidence": "Visible headings, card labels, navigation, and notice copy are readable with stable alignment in desktop evidence.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-desktop.png" ] }, { "principleId": "be-inclusive", "checkId": "zoom-reflow-targets-and-media", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "At a 360px visual viewport the document still lays out at 1000px and overflows by 640px; the viewport meta is absent in the rendered homepage.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-mobile-layout.json", "evidence/home-mobile.png" ], "findingIds": [ "AMZ-018" ] }, { "principleId": "follow-best-practices", "checkId": "no-console-errors", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "Lighthouse captured a console error warning that module @m/mash loaded late.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-lighthouse-summary.json" ], "findingIds": [ "AMZ-019" ] }, { "principleId": "follow-best-practices", "checkId": "sound-document-and-assets", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "The image primitive found 86/100 images without dimensions, 86 without srcset, 99 legacy-format images, 18 missing alt values, and Lighthouse found six incorrect aspect ratios.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-images.json", "evidence/home-lighthouse-summary.json" ], "findingIds": [ "AMZ-020" ] }, { "principleId": "follow-best-practices", "checkId": "browser-platform-hygiene", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "Lighthouse found synchronous main-thread XHR, deprecated Shared Storage usage, third-party cookie inspector issues, and a 50 best-practices score.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-lighthouse-summary.json" ], "findingIds": [ "AMZ-021" ] }, { "principleId": "be-discoverable", "checkId": "title-and-description", "status": "pass", "confidence": "medium", "method": "DOM metadata probe", "evidence": "Rendered homepage has a descriptive title and a detailed Canada-specific meta description.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-recon.json" ] }, { "principleId": "be-discoverable", "checkId": "crawlable-and-mobile-friendly", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "The homepage lacks viewport meta in the rendered state and Lighthouse found a javascript:void(0) anchor; robots.txt blocks GPTBot and several paths.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-mobile-layout.json", "evidence/home-lighthouse-summary.json", "evidence/robots.txt" ], "findingIds": [ "AMZ-022" ] }, { "principleId": "be-discoverable", "checkId": "canonical-and-indexing-signals", "status": "pass", "confidence": "medium", "method": "DOM canonical probe and robots fetch", "evidence": "Homepage returns public content in browser, declares canonical https://www.amazon.ca/, and serves a detailed robots.txt.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-recon.json" ] }, { "principleId": "be-discoverable", "checkId": "structured-and-shareable-metadata", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "The platform probe found Open Graph metadata but zero JSON-LD blocks on a public retail/organization homepage.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-platform.json" ], "findingIds": [ "AMZ-023" ] }, { "principleId": "be-private-and-secure", "checkId": "secure-transport-and-headers", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "Direct response evidence confirms HTTPS/HSTS, but no CSP, nosniff, Referrer-Policy, or Permissions-Policy was present; cookie audit found three non-Secure cookies and auth-like cookies without HttpOnly.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-headers.json", "evidence/home-curl-headers.txt", "evidence/home-cookies.json" ], "findingIds": [ "AMZ-024" ] }, { "principleId": "be-private-and-secure", "checkId": "data-minimisation-and-third-parties", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "Lighthouse found 26 third-party cookies and long identity-sync chains; HAR attributed 283/292 requests and 5.12MB to other origins, while the page shows only a Continue Shopping consent action.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-lighthouse-summary.json", "evidence/home-summary.json", "evidence/home-desktop.png" ], "findingIds": [ "AMZ-025" ] }, { "principleId": "be-private-and-secure", "checkId": "in-context-permissions-and-modern-auth", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "The direct /ap/signin route returned a not-found page and its DOM contained no form or passkey/WebAuthn path; no permission prompt appeared on homepage load.", "pathIds": [ "home" ], "artifacts": [ "evidence/signin.png", "evidence/signin-dom.json" ], "findingIds": [ "AMZ-026" ] }, { "principleId": "be-private-and-secure", "checkId": "defensive-browser-policies", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "HSTS is present, but CSP/frame-ancestors, nosniff, Referrer-Policy, and Permissions-Policy were absent in captured responses; insecure/SameSite=None cookies remain.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-headers.json", "evidence/home-cookies.json" ], "findingIds": [ "AMZ-027" ] }, { "principleId": "be-resilient", "checkId": "progressive-enhancement", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "Discoverability fetched status 202 with only 2,007 raw bytes and 0% rendered-word coverage; title, h1, and meta description were absent and crawler view lacked retail content.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-discoverability.json", "evidence/home-discoverability-rendered.png", "evidence/home-discoverability-crawler.png" ], "findingIds": [ "AMZ-028" ] }, { "principleId": "be-resilient", "checkId": "resilient-runtime-behaviour", "status": "pass", "confidence": "medium", "method": "repeated drawer interaction and visual review", "evidence": "Navigation drawer survived ten repeated open/close cycles and captured overlays remained within a bounded viewport state.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-heap-post-menu.json" ] }, { "principleId": "be-resilient", "checkId": "offline-and-installable", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "A service worker controls the homepage, but the runtime probe found no web app manifest. For a repeat-use commerce service, this leaves installability and offline intent undefined.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-runtime.json" ], "findingIds": [ "AMZ-029" ] }, { "principleId": "be-resilient", "checkId": "network-and-http-failure-states", "status": "pass", "confidence": "medium", "method": "failure-route DOM and screenshots", "evidence": "Synthetic and search failures render explicit bilingual recovery content rather than a blank shell.", "pathIds": [ "not-found" ], "artifacts": [ "evidence/search-desktop.png" ] }, { "principleId": "be-internationalised", "checkId": "lang-dir-and-logical-properties", "status": "pass", "confidence": "medium", "method": "DOM and screenshot inspection", "evidence": "The homepage declares lang=en-ca, offers EN country/language controls, and error states provide English and French recovery copy.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-recon.json" ] }, { "principleId": "be-internationalised", "checkId": "locale-aware-data", "status": "pass", "confidence": "medium", "method": "DOM locale and visual content inspection", "evidence": "The Canada storefront identifies en-CA and presents Canada-specific locale/currency context consistently.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-recon.json" ] }, { "principleId": "be-internationalised", "checkId": "time-zone-correctness", "status": "not-applicable", "confidence": "medium", "method": "Recon-based applicability judgement across representative accessible surfaces.", "evidence": "No time-zone-sensitive event, schedule, or stored-time surface was present on the accessible homepage; product/account surfaces were unavailable.", "reason": "No time-zone-sensitive event, schedule, or stored-time surface was present on the accessible homepage; product/account surfaces were unavailable." }, { "principleId": "be-trustworthy", "checkId": "no-dark-patterns", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "The initial notice presents a prominent yellow Continue Shopping action while preference adjustment is only an inline text link; no equally prominent reject/manage choice is shown.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-desktop.png" ], "findingIds": [ "AMZ-030" ] }, { "principleId": "be-trustworthy", "checkId": "humane-error-handling", "status": "pass", "confidence": "medium", "method": "failure screenshot review", "evidence": "Failure pages use plain bilingual language and provide a route back to the homepage rather than blaming the user.", "pathIds": [ "search" ], "artifacts": [ "evidence/search-desktop.png" ] }, { "principleId": "be-trustworthy", "checkId": "trustworthy-input-assistance", "status": "pass", "confidence": "medium", "method": "DOM input inspection", "evidence": "Search is explicitly labelled, uses type=text with role=searchbox, and supplies appropriate keyboard/search affordances.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-platform.json" ] }, { "principleId": "be-trustworthy", "checkId": "safe-commercial-and-account-flows", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "Fresh anonymous product, cart, and sign-in routes returned a challenge, generic error, and not-found page respectively, preventing verification of pricing, checkout, cancellation, or reauthentication.", "pathIds": [ "home" ], "artifacts": [ "evidence/product-desktop.png", "evidence/cart.png", "evidence/signin.png" ], "findingIds": [ "AMZ-031" ] }, { "principleId": "be-sustainable", "checkId": "optimised-assets", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "Of 100 images, 99 used legacy formats, 86 lacked responsive sources, 85 below-fold images were not lazy, and image transfer totalled 3.36MB.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-images.json", "evidence/home-summary.json" ], "findingIds": [ "AMZ-032" ] }, { "principleId": "be-sustainable", "checkId": "no-wasteful-work", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "The homepage made 292 requests, including 283 cross-origin requests, and Lighthouse reported 438KiB unused JS plus 213KiB unused CSS.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json", "evidence/home-lighthouse.json" ], "findingIds": [ "AMZ-033" ] }, { "principleId": "be-sustainable", "checkId": "third-party-and-media-budget", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "HAR recorded 5.12MB cross-origin transfer, 22 font requests (739.7KB), 223 image requests, and 4 media requests for the initial homepage.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json" ], "findingIds": [ "AMZ-034" ] }, { "principleId": "be-agent-ready", "checkId": "structured-agent-capabilities", "status": "issues", "confidence": "high", "method": "Active visual/objective evidence review against mapped Modern Web Guidance.", "evidence": "The homepage contained no WebMCP/agentic tool registration, the raw crawler view had 0% content coverage, and robots.txt explicitly disallows GPTBot.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-discoverability.json", "evidence/robots.txt", "evidence/home-dom.json" ], "findingIds": [ "AMZ-035" ] }, { "principleId": "be-agent-ready", "checkId": "on-device-inference", "status": "not-applicable", "confidence": "medium", "method": "Recon-based applicability judgement across representative accessible surfaces.", "evidence": "No summarisation, language-assistance, or other user-facing inference task was present on the audited surfaces, so on-device inference is not warranted.", "reason": "No summarisation, language-assistance, or other user-facing inference task was present on the audited surfaces, so on-device inference is not warranted." }, { "principleId": "be-memory-efficient", "checkId": "no-leak-under-repeated-interaction", "status": "pass", "confidence": "medium", "method": "baseline/post heap summaries after repeated interaction", "evidence": "After ten menu open/close cycles, heap node count fell from 511,691 to 472,863 and self size from 35.40MB to 32.29MB; no retained growth signal appeared.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-heap-post-menu.json" ] }, { "principleId": "be-memory-efficient", "checkId": "bounded-footprint", "status": "pass", "confidence": "medium", "method": "runtime metrics and heap summary", "evidence": "Runtime used about 21.6MB JS heap and 4,141 live DOM elements; heap snapshot self size was 35.40MB, proportionate for the content-heavy page though sizable.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-heap.json" ] }, { "principleId": "be-memory-efficient", "checkId": "no-detached-dom-or-unbounded-listeners", "status": "pass", "confidence": "medium", "method": "before/after heap summary comparison", "evidence": "Repeated drawer interaction reduced rather than grew heap node/edge populations; top constructor summaries exposed no growing Detached* population.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-heap-post-menu.json" ] } ], "principleOutcomes": [ { "principleId": "respect-user-preferences", "expectation": "default", "status": "issues", "findingIds": [ "AMZ-001" ] }, { "principleId": "implement-natural-interactions", "expectation": "default", "status": "issues", "findingIds": [ "AMZ-002", "AMZ-003" ] }, { "principleId": "provide-guided-navigation", "expectation": "default", "status": "issues", "findingIds": [ "AMZ-004", "AMZ-005" ] }, { "principleId": "maximize-content-reduce-noise", "expectation": "default", "status": "issues", "findingIds": [ "AMZ-006", "AMZ-007", "AMZ-008" ] }, { "principleId": "adapt-to-the-form-factor", "expectation": "default", "status": "issues", "findingIds": [ "AMZ-009", "AMZ-010" ] }, { "principleId": "support-core-task-success", "expectation": "default", "status": "issues", "findingIds": [ "AMZ-011" ] }, { "principleId": "be-fast-and-stable", "expectation": "default", "status": "issues", "findingIds": [ "AMZ-012", "AMZ-013", "AMZ-014", "AMZ-015" ] }, { "principleId": "be-inclusive", "expectation": "default", "status": "issues", "findingIds": [ "AMZ-016", "AMZ-017", "AMZ-018" ] }, { "principleId": "follow-best-practices", "expectation": "default", "status": "issues", "findingIds": [ "AMZ-019", "AMZ-020", "AMZ-021" ] }, { "principleId": "be-discoverable", "expectation": "default", "status": "issues", "findingIds": [ "AMZ-022", "AMZ-023" ] }, { "principleId": "be-private-and-secure", "expectation": "default", "status": "issues", "findingIds": [ "AMZ-024", "AMZ-025", "AMZ-026", "AMZ-027" ] }, { "principleId": "be-resilient", "expectation": "contextual", "status": "issues", "findingIds": [ "AMZ-028", "AMZ-029" ] }, { "principleId": "be-internationalised", "expectation": "contextual", "status": "pass" }, { "principleId": "be-trustworthy", "expectation": "default", "status": "issues", "findingIds": [ "AMZ-030", "AMZ-031" ] }, { "principleId": "be-sustainable", "expectation": "contextual", "status": "issues", "findingIds": [ "AMZ-032", "AMZ-033", "AMZ-034" ] }, { "principleId": "be-agent-ready", "expectation": "contextual", "status": "issues", "findingIds": [ "AMZ-035" ] }, { "principleId": "be-memory-efficient", "expectation": "default", "status": "pass" } ], "paths": [ { "id": "home", "description": "Homepage and global retail navigation, representing the landing template and initial product-discovery entry point.", "url": "https://www.amazon.ca", "conditions": [ "desktop", "viewport: 360x800", "prefers-color-scheme: dark", "prefers-contrast: more", "prefers-reduced-motion: reduce", "keyboard focus probes" ], "result": "issues" }, { "id": "search", "description": "Search for “laptop”, representing the primary product-discovery journey. The route consistently returned Amazon’s generic error page during independent captures.", "url": "https://www.amazon.ca/s?k=laptop", "conditions": [ "desktop", "fresh browser session" ], "result": "failed" }, { "id": "product", "description": "Representative product detail URL discovered from the homepage. Fresh sessions were diverted to an automated-access “Continue shopping” challenge instead of product content.", "url": "https://www.amazon.ca/dp/B0CCZ26B5V", "conditions": [ "desktop", "viewport: 360x800" ], "result": "failed" }, { "id": "cart", "description": "Cart route, representing the purchase funnel. It returned Amazon’s generic “Something went wrong” page.", "url": "https://www.amazon.ca/gp/cart/view.html", "conditions": [ "desktop", "fresh browser session" ], "result": "failed" }, { "id": "signin", "description": "Sign-in route, representing authentication and account entry. It returned a “Looking for Something?” not-found page.", "url": "https://www.amazon.ca/ap/signin", "conditions": [ "desktop", "fresh browser session" ], "result": "failed" }, { "id": "not-found", "description": "Synthetic nonexistent route, representing HTTP/runtime failure recovery. It exposed a bilingual recovery screen with homepage/search routes.", "url": "https://www.amazon.ca/this-route-should-not-exist-web-uplift", "conditions": [ "desktop" ], "result": "pass" } ], "findings": [ { "id": "AMZ-009", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "adapt-to-the-form-factor", "principleCheckId": "responsive-no-horizontal-scroll", "guidanceId": "fluid-scaling", "guidanceCategory": "user-experience", "severity": "critical", "confidence": "high", "summary": "Homepage is not mobile-responsive in the captured condition", "evidence": "At 360x800, layout reported no viewport meta, a 1000px inner layout, and 640px overflow; the screenshot shows clipped desktop content.", "artifacts": [ "evidence/home-mobile.png", "evidence/home-mobile-layout.json" ], "suggestedFix": "Add a valid width=device-width viewport and use intrinsic/grid layouts that reflow without horizontal overflow.", "effort": "large" }, { "id": "AMZ-011", "pathId": "search", "url": "https://www.amazon.ca", "principleId": "support-core-task-success", "principleCheckId": "primary-flow-completion", "guidanceId": "forms", "guidanceCategory": "forms", "severity": "critical", "confidence": "high", "summary": "Primary discovery and purchase routes fail in fresh sessions", "evidence": "Search returned “Something went wrong”, product detail returned an automated-access challenge, cart returned the same generic error, and sign-in returned not-found.", "artifacts": [ "evidence/search-desktop.png", "evidence/product-desktop.png", "evidence/cart.png", "evidence/signin.png" ], "suggestedFix": "Stabilise anonymous session/WAF routing so search, product, cart, and sign-in work end-to-end; retain context and provide route-specific retry paths.", "effort": "large" }, { "id": "AMZ-018", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "be-inclusive", "principleCheckId": "zoom-reflow-targets-and-media", "guidanceId": "fluid-scaling", "guidanceCategory": "user-experience", "severity": "critical", "confidence": "high", "summary": "Narrow-screen reflow fails", "evidence": "At a 360px visual viewport the document still lays out at 1000px and overflows by 640px; the viewport meta is absent in the rendered homepage.", "artifacts": [ "evidence/home-mobile-layout.json", "evidence/home-mobile.png" ], "suggestedFix": "Restore width=device-width and make all page regions reflow at 320 CSS px and 400% zoom without two-dimensional scrolling.", "effort": "large" }, { "id": "AMZ-028", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "be-resilient", "principleCheckId": "progressive-enhancement", "guidanceId": "html", "guidanceCategory": "user-experience", "severity": "critical", "confidence": "high", "summary": "Core content is invisible to a non-JavaScript crawler", "evidence": "Discoverability fetched status 202 with only 2,007 raw bytes and 0% rendered-word coverage; title, h1, and meta description were absent and crawler view lacked retail content.", "artifacts": [ "evidence/home-discoverability.json", "evidence/home-discoverability-rendered.png", "evidence/home-discoverability-crawler.png" ], "suggestedFix": "Serve meaningful product/navigation HTML and metadata in the initial response, with scripts enhancing rather than creating the core experience.", "effort": "large" }, { "id": "AMZ-031", "pathId": "search", "url": "https://www.amazon.ca", "principleId": "be-trustworthy", "principleCheckId": "safe-commercial-and-account-flows", "guidanceId": "autofill-payment-form", "guidanceCategory": "forms", "severity": "critical", "confidence": "high", "summary": "Commercial and account entry points are not safely completable", "evidence": "Fresh anonymous product, cart, and sign-in routes returned a challenge, generic error, and not-found page respectively, preventing verification of pricing, checkout, cancellation, or reauthentication.", "artifacts": [ "evidence/product-desktop.png", "evidence/cart.png", "evidence/signin.png" ], "suggestedFix": "Make these routes reliable, preserve product/cart context through authentication, and show commitments and recovery actions before confirmation.", "effort": "large" }, { "id": "AMZ-010", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "adapt-to-the-form-factor", "principleCheckId": "input-modality-aware", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "severity": "high", "confidence": "high", "summary": "Keyboard focus is invisible on primary controls", "evidence": "Explicit focus probes reported outline:none/0px on search, cart, hamburger, account, and the privacy Continue Shopping control; tiny 8x4px disclosure buttons were also found.", "artifacts": [ "evidence/home-platform.json", "evidence/home-runtime.json" ], "suggestedFix": "Add strong :focus-visible indicators and ensure every interactive target is at least 24x24 CSS px, preferably 44x44 for touch.", "effort": "medium" }, { "id": "AMZ-012", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "be-fast-and-stable", "principleCheckId": "good-core-web-vitals", "guidanceId": "performance", "guidanceCategory": "performance", "severity": "high", "confidence": "high", "summary": "Mobile loading performance misses the LCP bar", "evidence": "Lighthouse measured LCP 10.54s, FCP 6.03s, Speed Index 11.04s, TTI 16.42s, and performance 54; trace LCP was 3.40s in a separate desktop-like run.", "artifacts": [ "evidence/home-lighthouse-summary.json", "evidence/home-trace-summary.json" ], "suggestedFix": "Prioritise the LCP resource, reduce critical CSS/script work, and validate field Core Web Vitals by template.", "effort": "medium" }, { "id": "AMZ-014", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "be-fast-and-stable", "principleCheckId": "efficient-resource-delivery", "guidanceId": "optimize-image-priority", "guidanceCategory": "performance", "severity": "high", "confidence": "high", "summary": "The homepage ships a heavy, highly fragmented load", "evidence": "HAR captured 292 requests and 5.39MB transferred, including 223 images, 22 fonts, and multiple VeryHigh parser-blocking stylesheets.", "artifacts": [ "evidence/home-summary.json", "evidence/home.har" ], "suggestedFix": "Reduce critical dependencies, consolidate font/style delivery, add useful lazy loading, and prioritise only the LCP image.", "effort": "medium" }, { "id": "AMZ-017", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "be-inclusive", "principleCheckId": "structure-and-focus", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "severity": "high", "confidence": "high", "summary": "Heading and focus structure is incomplete", "evidence": "The rendered homepage has no h1 and explicit probes show most primary controls with no visible outline, despite skip links and landmarks.", "artifacts": [ "evidence/home-platform.json", "evidence/home-lighthouse-summary.json" ], "suggestedFix": "Add a meaningful page h1 and consistent :focus-visible treatment while preserving logical landmark and tab order.", "effort": "medium" }, { "id": "AMZ-022", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "be-discoverable", "principleCheckId": "crawlable-and-mobile-friendly", "guidanceId": "html", "guidanceCategory": "user-experience", "severity": "high", "confidence": "high", "summary": "Crawler/mobile signals are inconsistent", "evidence": "The homepage lacks viewport meta in the rendered state and Lighthouse found a javascript:void(0) anchor; robots.txt blocks GPTBot and several paths.", "artifacts": [ "evidence/home-mobile-layout.json", "evidence/home-lighthouse-summary.json", "evidence/robots.txt" ], "suggestedFix": "Add the viewport meta, replace pseudo-links with buttons or real hrefs, and review crawler policy by intended audience.", "effort": "medium" }, { "id": "AMZ-024", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "be-private-and-secure", "principleCheckId": "secure-transport-and-headers", "guidanceId": "security", "guidanceCategory": "security", "severity": "high", "confidence": "high", "summary": "Security header and cookie posture is incomplete", "evidence": "Direct response evidence confirms HTTPS/HSTS, but no CSP, nosniff, Referrer-Policy, or Permissions-Policy was present; cookie audit found three non-Secure cookies and auth-like cookies without HttpOnly.", "artifacts": [ "evidence/home-headers.json", "evidence/home-curl-headers.txt", "evidence/home-cookies.json" ], "suggestedFix": "Deploy an enforcing CSP, nosniff, Referrer-Policy and Permissions-Policy, and set Secure/HttpOnly/SameSite attributes appropriate to each cookie.", "effort": "medium" }, { "id": "AMZ-025", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "be-private-and-secure", "principleCheckId": "data-minimisation-and-third-parties", "guidanceId": "privacy", "guidanceCategory": "security", "severity": "high", "confidence": "high", "summary": "Advertising and identity-sync footprint is excessive by default", "evidence": "Lighthouse found 26 third-party cookies and long identity-sync chains; HAR attributed 283/292 requests and 5.12MB to other origins, while the page shows only a Continue Shopping consent action.", "artifacts": [ "evidence/home-lighthouse-summary.json", "evidence/home-summary.json", "evidence/home-desktop.png" ], "suggestedFix": "Minimise and defer advertising/identity sync until an explicit choice, reduce vendors, and batch essential analytics.", "effort": "medium" }, { "id": "AMZ-026", "pathId": "search", "url": "https://www.amazon.ca", "principleId": "be-private-and-secure", "principleCheckId": "in-context-permissions-and-modern-auth", "guidanceId": "passkeys", "guidanceCategory": "security", "severity": "high", "confidence": "high", "summary": "Authentication entry is unavailable and modern-auth support cannot be reached", "evidence": "The direct /ap/signin route returned a not-found page and its DOM contained no form or passkey/WebAuthn path; no permission prompt appeared on homepage load.", "artifacts": [ "evidence/signin.png", "evidence/signin-dom.json" ], "suggestedFix": "Restore sign-in routing and expose passkey-first authentication with correct autofill and contextual permission requests.", "effort": "medium" }, { "id": "AMZ-030", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "be-trustworthy", "principleCheckId": "no-dark-patterns", "guidanceId": "forms", "guidanceCategory": "forms", "severity": "high", "confidence": "high", "summary": "Privacy choice is visually one-sided", "evidence": "The initial notice presents a prominent yellow Continue Shopping action while preference adjustment is only an inline text link; no equally prominent reject/manage choice is shown.", "artifacts": [ "evidence/home-desktop.png" ], "suggestedFix": "Present accept, reject, and manage choices with equal clarity and preserve the user’s decision without nagging.", "effort": "medium" }, { "id": "AMZ-032", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "be-sustainable", "principleCheckId": "optimised-assets", "guidanceId": "deliver-optimized-decorative-images", "guidanceCategory": "user-experience", "severity": "high", "confidence": "high", "summary": "Image delivery is materially wasteful", "evidence": "Of 100 images, 99 used legacy formats, 86 lacked responsive sources, 85 below-fold images were not lazy, and image transfer totalled 3.36MB.", "artifacts": [ "evidence/home-images.json", "evidence/home-summary.json" ], "suggestedFix": "Adopt AVIF/WebP via picture/srcset, right-size by rendered slot, lazy-load below-fold media, and reserve dimensions.", "effort": "medium" }, { "id": "AMZ-033", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "be-sustainable", "principleCheckId": "no-wasteful-work", "guidanceId": "deprioritize-background-fetches", "guidanceCategory": "performance", "severity": "high", "confidence": "high", "summary": "The page performs disproportionate background/network work", "evidence": "The homepage made 292 requests, including 283 cross-origin requests, and Lighthouse reported 438KiB unused JS plus 213KiB unused CSS.", "artifacts": [ "evidence/home-summary.json", "evidence/home-lighthouse.json" ], "suggestedFix": "Conditionally fetch below-fold and third-party features, pause background work, and remove unused bundles.", "effort": "medium" }, { "id": "AMZ-034", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "be-sustainable", "principleCheckId": "third-party-and-media-budget", "guidanceId": "deprioritize-background-fetches", "guidanceCategory": "performance", "severity": "high", "confidence": "high", "summary": "Third-party and font/media budgets are disproportionate", "evidence": "HAR recorded 5.12MB cross-origin transfer, 22 font requests (739.7KB), 223 image requests, and 4 media requests for the initial homepage.", "artifacts": [ "evidence/home-summary.json" ], "suggestedFix": "Set template budgets, self-host/subset fonts where useful, defer nonessential media, and load advertising only after an informed choice.", "effort": "medium" }, { "id": "AMZ-001", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "respect-user-preferences", "principleCheckId": "respects-color-scheme", "guidanceId": "dark-mode", "guidanceCategory": "user-experience", "severity": "medium", "confidence": "high", "summary": "Dark preference is ignored", "evidence": "The dark-mode screenshot remains white/light grey and the computed body color-scheme is normal; no prefers-color-scheme rules were found.", "artifacts": [ "evidence/home-dark.png", "evidence/home-dom.json" ], "suggestedFix": "Declare color-scheme: light dark and derive surface/text/control colours with prefers-color-scheme or light-dark().", "effort": "small" }, { "id": "AMZ-006", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "maximize-content-reduce-noise", "principleCheckId": "no-intrusive-interruptions", "guidanceId": "light-dismiss-a-dialog", "guidanceCategory": "user-experience", "severity": "medium", "confidence": "high", "summary": "Interest-based ads notice interrupts the initial view", "evidence": "The initial screenshot shows a fixed notice covering the lower page before interaction, including product cards.", "artifacts": [ "evidence/home-desktop.png" ], "suggestedFix": "Make privacy controls compact and non-obscuring, with clear choices and dismissal that does not block browsing.", "effort": "small" }, { "id": "AMZ-007", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "maximize-content-reduce-noise", "principleCheckId": "semantic-dismissible-primitives", "guidanceId": "declarative-dialog-popover-control", "guidanceCategory": "user-experience", "severity": "medium", "confidence": "high", "summary": "Dismissible UI is implemented with custom role-based forms", "evidence": "The notice is a form role=dialog; the probe found zero , popover, or details elements and 27 custom role=dialog nodes.", "artifacts": [ "evidence/home-platform.json", "evidence/home-dom.json" ], "suggestedFix": "Use the native dialog/popover primitives with declarative commands, correct focus management, Escape/light dismiss, and a fallback.", "effort": "small" }, { "id": "AMZ-008", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "maximize-content-reduce-noise", "principleCheckId": "reduced-chrome", "guidanceId": "defer-rendering-heavy-content", "guidanceCategory": "user-experience", "severity": "medium", "confidence": "high", "summary": "Dense chrome crowds the shopping content", "evidence": "Desktop evidence shows two navigation rows, a large hero, four dense merchandising cards, and a fixed notice in one viewport; mobile retains a 1000px desktop canvas.", "artifacts": [ "evidence/home-desktop.png", "evidence/home-mobile.png" ], "suggestedFix": "Reduce persistent navigation and promotional chrome, prioritise search and the most relevant products, and progressively disclose secondary controls.", "effort": "small" }, { "id": "AMZ-013", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "be-fast-and-stable", "principleCheckId": "efficient-main-thread", "guidanceId": "break-up-long-tasks", "guidanceCategory": "performance", "severity": "medium", "confidence": "high", "summary": "Script work delays interactivity", "evidence": "Lighthouse measured 179.5ms TBT and 300ms max potential FID; the trace observed two long tasks up to 66.12ms.", "artifacts": [ "evidence/home-lighthouse-summary.json", "evidence/home-trace-summary.json" ], "suggestedFix": "Break long tasks, defer non-critical modules, and schedule background work at lower priority.", "effort": "small" }, { "id": "AMZ-015", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "be-fast-and-stable", "principleCheckId": "trim-unused-and-duplicate-code", "guidanceId": "identify-heavy-scripts", "guidanceCategory": "performance", "severity": "medium", "confidence": "high", "summary": "Large unused JS and CSS payloads are delivered", "evidence": "Lighthouse estimated 438KiB unused JavaScript and 213KiB unused CSS; HAR recorded 882.7KB script transfer.", "artifacts": [ "evidence/home-lighthouse.json", "evidence/home-summary.json" ], "suggestedFix": "Code-split by page capability, conditionally load dependencies, and remove duplicate/unused AUI and campaign bundles.", "effort": "small" }, { "id": "AMZ-016", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "be-inclusive", "principleCheckId": "names-roles-labels", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "severity": "medium", "confidence": "high", "summary": "ARIA semantics are invalid on important controls", "evidence": "Lighthouse found disallowed aria-expanded on the searchbox, aria-setsize on a list, and an accessible-name mismatch on Cart.", "artifacts": [ "evidence/home-lighthouse-summary.json" ], "suggestedFix": "Use native semantics where possible and align roles, allowed ARIA attributes, visible labels, and accessible names.", "effort": "small" }, { "id": "AMZ-020", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "follow-best-practices", "principleCheckId": "sound-document-and-assets", "guidanceId": "html", "guidanceCategory": "user-experience", "severity": "medium", "confidence": "high", "summary": "Image markup and sizing are unsound", "evidence": "The image primitive found 86/100 images without dimensions, 86 without srcset, 99 legacy-format images, 18 missing alt values, and Lighthouse found six incorrect aspect ratios.", "artifacts": [ "evidence/home-images.json", "evidence/home-lighthouse-summary.json" ], "suggestedFix": "Reserve image dimensions/aspect ratios and provide responsive modern sources while preserving appropriate alt text.", "effort": "small" }, { "id": "AMZ-021", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "follow-best-practices", "principleCheckId": "browser-platform-hygiene", "guidanceId": "html", "guidanceCategory": "user-experience", "severity": "medium", "confidence": "high", "summary": "Deprecated APIs and browser inspector issues remain", "evidence": "Lighthouse found synchronous main-thread XHR, deprecated Shared Storage usage, third-party cookie inspector issues, and a 50 best-practices score.", "artifacts": [ "evidence/home-lighthouse-summary.json" ], "suggestedFix": "Remove synchronous XHR and deprecated Shared Storage use, resolve cookie issues, and retest BFCache and inspector warnings.", "effort": "small" }, { "id": "AMZ-027", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "be-private-and-secure", "principleCheckId": "defensive-browser-policies", "guidanceId": "security", "guidanceCategory": "security", "severity": "medium", "confidence": "high", "summary": "Browser-enforced defence headers are incomplete", "evidence": "HSTS is present, but CSP/frame-ancestors, nosniff, Referrer-Policy, and Permissions-Policy were absent in captured responses; insecure/SameSite=None cookies remain.", "artifacts": [ "evidence/home-headers.json", "evidence/home-cookies.json" ], "suggestedFix": "Roll out CSP with frame-ancestors and Trusted Types where appropriate, nosniff, strict referrer/permissions policies, and modern cookie controls.", "effort": "small" }, { "id": "AMZ-035", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "be-agent-ready", "principleCheckId": "structured-agent-capabilities", "guidanceId": "webmcp", "guidanceCategory": "webmcp", "severity": "medium", "confidence": "high", "summary": "Commerce capabilities are not exposed safely to agents", "evidence": "The homepage contained no WebMCP/agentic tool registration, the raw crawler view had 0% content coverage, and robots.txt explicitly disallows GPTBot.", "artifacts": [ "evidence/home-discoverability.json", "evidence/robots.txt", "evidence/home-dom.json" ], "suggestedFix": "If agentic commerce is intended, expose bounded WebMCP tools/agentic forms for search, product details, cart, and checkout with confirmation gates.", "effort": "small" }, { "id": "AMZ-002", "pathId": "search", "url": "https://www.amazon.ca", "principleId": "implement-natural-interactions", "principleCheckId": "view-transitions", "guidanceId": "same-document-transitions", "guidanceCategory": "user-experience", "severity": "low", "confidence": "high", "summary": "Page and state changes do not use View Transitions", "evidence": "Rendered CSS only contains reset-to-unset view-transition declarations; search/product journeys replace the page abruptly with error or challenge screens.", "artifacts": [ "evidence/home-dom.json", "evidence/product-desktop.png" ], "suggestedFix": "Use same-document transitions for carousel/menu state and cross-document View Transitions for eligible retail navigation, with reduced-motion fallbacks.", "effort": "small" }, { "id": "AMZ-003", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "implement-natural-interactions", "principleCheckId": "physical-gestures", "guidanceId": "carousel-slide-effects", "guidanceCategory": "user-experience", "severity": "low", "confidence": "high", "summary": "Carousel/navigation interactions use legacy controls without platform gesture behaviour", "evidence": "The homepage hero is an arrow-driven carousel; DOM/CSS inspection found no active scroll-snap or overscroll gesture rules, only reset declarations.", "artifacts": [ "evidence/home-desktop.png", "evidence/home-dom.json" ], "suggestedFix": "Implement carousels with scroll snap and overscroll containment while retaining buttons and keyboard operation.", "effort": "small" }, { "id": "AMZ-004", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "provide-guided-navigation", "principleCheckId": "scroll-state-aware-chrome", "guidanceId": "shrinking-header-on-scroll", "guidanceCategory": "user-experience", "severity": "low", "confidence": "high", "summary": "Navigation chrome does not react to scroll state", "evidence": "The long homepage keeps a fixed two-row header and no animation-timeline or scroll-state query was found in captured CSS.", "artifacts": [ "evidence/home-desktop.png", "evidence/home-dom.json" ], "suggestedFix": "Use container scroll-state queries or a declarative scroll-driven header/progress affordance where the page length warrants it.", "effort": "small" }, { "id": "AMZ-005", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "provide-guided-navigation", "principleCheckId": "anchored-positioning", "guidanceId": "position-aware-tooltips", "guidanceCategory": "user-experience", "severity": "low", "confidence": "high", "summary": "Overlays are custom-positioned rather than anchored platform popovers", "evidence": "The platform probe found 27 role=dialog elements, zero native dialogs/popovers, and no active anchor positioning declarations.", "artifacts": [ "evidence/home-platform.json", "evidence/home-dom.json" ], "suggestedFix": "Use popover/dialog plus CSS anchor positioning and position fallbacks for menus, tips, and transient overlays.", "effort": "small" }, { "id": "AMZ-019", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "follow-best-practices", "principleCheckId": "no-console-errors", "guidanceId": "performance", "guidanceCategory": "performance", "severity": "low", "confidence": "high", "summary": "The homepage logs a client error", "evidence": "Lighthouse captured a console error warning that module @m/mash loaded late.", "artifacts": [ "evidence/home-lighthouse-summary.json" ], "suggestedFix": "Fix the late module dependency/ordering issue and keep production console error-free.", "effort": "small" }, { "id": "AMZ-023", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "be-discoverable", "principleCheckId": "structured-and-shareable-metadata", "guidanceId": "html", "guidanceCategory": "user-experience", "severity": "low", "confidence": "high", "summary": "Homepage lacks structured entity metadata", "evidence": "The platform probe found Open Graph metadata but zero JSON-LD blocks on a public retail/organization homepage.", "artifacts": [ "evidence/home-platform.json" ], "suggestedFix": "Add accurate Organization/WebSite JSON-LD, including SearchAction only if it matches a reliable crawlable search URL.", "effort": "small" }, { "id": "AMZ-029", "pathId": "home", "url": "https://www.amazon.ca", "principleId": "be-resilient", "principleCheckId": "offline-and-installable", "guidanceId": "html", "guidanceCategory": "user-experience", "severity": "low", "confidence": "high", "summary": "No installable app metadata is exposed", "evidence": "A service worker controls the homepage, but the runtime probe found no web app manifest. For a repeat-use commerce service, this leaves installability and offline intent undefined.", "artifacts": [ "evidence/home-runtime.json" ], "suggestedFix": "Add a valid manifest and a lightweight offline/retry fallback for browsing state, or explicitly document why installability is out of scope.", "effort": "small" } ], "taskList": [ { "id": "TASK-01", "title": "Add a valid width=device-width viewport and use intrinsic/grid layouts that reflow without horizontal overflow.", "priority": 1, "findingIds": [ "AMZ-009" ], "guidanceId": "fluid-scaling", "status": "open" }, { "id": "TASK-02", "title": "Stabilise anonymous session/WAF routing so search, product, cart, and sign-in work end-to-end; retain context and provide route-specific retry paths.", "priority": 2, "findingIds": [ "AMZ-011" ], "guidanceId": "forms", "status": "open" }, { "id": "TASK-03", "title": "Restore width=device-width and make all page regions reflow at 320 CSS px and 400% zoom without two-dimensional scrolling.", "priority": 3, "findingIds": [ "AMZ-018" ], "guidanceId": "fluid-scaling", "status": "open" }, { "id": "TASK-04", "title": "Serve meaningful product/navigation HTML and metadata in the initial response, with scripts enhancing rather than creating the core experience.", "priority": 4, "findingIds": [ "AMZ-028" ], "guidanceId": "html", "status": "open" }, { "id": "TASK-05", "title": "Make these routes reliable, preserve product/cart context through authentication, and show commitments and recovery actions before confirmation.", "priority": 5, "findingIds": [ "AMZ-031" ], "guidanceId": "autofill-payment-form", "status": "open" }, { "id": "TASK-06", "title": "Add strong :focus-visible indicators and ensure every interactive target is at least 24x24 CSS px, preferably 44x44 for touch.", "priority": 6, "findingIds": [ "AMZ-010" ], "guidanceId": "accessibility", "status": "open" }, { "id": "TASK-07", "title": "Prioritise the LCP resource, reduce critical CSS/script work, and validate field Core Web Vitals by template.", "priority": 7, "findingIds": [ "AMZ-012" ], "guidanceId": "performance", "status": "open" }, { "id": "TASK-08", "title": "Reduce critical dependencies, consolidate font/style delivery, add useful lazy loading, and prioritise only the LCP image.", "priority": 8, "findingIds": [ "AMZ-014" ], "guidanceId": "optimize-image-priority", "status": "open" }, { "id": "TASK-09", "title": "Add a meaningful page h1 and consistent :focus-visible treatment while preserving logical landmark and tab order.", "priority": 9, "findingIds": [ "AMZ-017" ], "guidanceId": "accessibility", "status": "open" }, { "id": "TASK-10", "title": "Add the viewport meta, replace pseudo-links with buttons or real hrefs, and review crawler policy by intended audience.", "priority": 10, "findingIds": [ "AMZ-022" ], "guidanceId": "html", "status": "open" }, { "id": "TASK-11", "title": "Deploy an enforcing CSP, nosniff, Referrer-Policy and Permissions-Policy, and set Secure/HttpOnly/SameSite attributes appropriate to each cookie.", "priority": 11, "findingIds": [ "AMZ-024" ], "guidanceId": "security", "status": "open" }, { "id": "TASK-12", "title": "Minimise and defer advertising/identity sync until an explicit choice, reduce vendors, and batch essential analytics.", "priority": 12, "findingIds": [ "AMZ-025" ], "guidanceId": "privacy", "status": "open" }, { "id": "TASK-13", "title": "Restore sign-in routing and expose passkey-first authentication with correct autofill and contextual permission requests.", "priority": 13, "findingIds": [ "AMZ-026" ], "guidanceId": "passkeys", "status": "open" }, { "id": "TASK-14", "title": "Present accept, reject, and manage choices with equal clarity and preserve the user’s decision without nagging.", "priority": 14, "findingIds": [ "AMZ-030" ], "guidanceId": "forms", "status": "open" }, { "id": "TASK-15", "title": "Adopt AVIF/WebP via picture/srcset, right-size by rendered slot, lazy-load below-fold media, and reserve dimensions.", "priority": 15, "findingIds": [ "AMZ-032" ], "guidanceId": "deliver-optimized-decorative-images", "status": "open" }, { "id": "TASK-16", "title": "Conditionally fetch below-fold and third-party features, pause background work, and remove unused bundles.", "priority": 16, "findingIds": [ "AMZ-033" ], "guidanceId": "deprioritize-background-fetches", "status": "open" }, { "id": "TASK-17", "title": "Set template budgets, self-host/subset fonts where useful, defer nonessential media, and load advertising only after an informed choice.", "priority": 17, "findingIds": [ "AMZ-034" ], "guidanceId": "deprioritize-background-fetches", "status": "open" }, { "id": "TASK-18", "title": "Declare color-scheme: light dark and derive surface/text/control colours with prefers-color-scheme or light-dark().", "priority": 18, "findingIds": [ "AMZ-001" ], "guidanceId": "dark-mode", "status": "open" }, { "id": "TASK-19", "title": "Make privacy controls compact and non-obscuring, with clear choices and dismissal that does not block browsing.", "priority": 19, "findingIds": [ "AMZ-006" ], "guidanceId": "light-dismiss-a-dialog", "status": "open" }, { "id": "TASK-20", "title": "Use the native dialog/popover primitives with declarative commands, correct focus management, Escape/light dismiss, and a fallback.", "priority": 20, "findingIds": [ "AMZ-007" ], "guidanceId": "declarative-dialog-popover-control", "status": "open" }, { "id": "TASK-21", "title": "Reduce persistent navigation and promotional chrome, prioritise search and the most relevant products, and progressively disclose secondary controls.", "priority": 21, "findingIds": [ "AMZ-008" ], "guidanceId": "defer-rendering-heavy-content", "status": "open" }, { "id": "TASK-22", "title": "Break long tasks, defer non-critical modules, and schedule background work at lower priority.", "priority": 22, "findingIds": [ "AMZ-013" ], "guidanceId": "break-up-long-tasks", "status": "open" }, { "id": "TASK-23", "title": "Code-split by page capability, conditionally load dependencies, and remove duplicate/unused AUI and campaign bundles.", "priority": 23, "findingIds": [ "AMZ-015" ], "guidanceId": "identify-heavy-scripts", "status": "open" }, { "id": "TASK-24", "title": "Use native semantics where possible and align roles, allowed ARIA attributes, visible labels, and accessible names.", "priority": 24, "findingIds": [ "AMZ-016" ], "guidanceId": "accessibility", "status": "open" }, { "id": "TASK-25", "title": "Reserve image dimensions/aspect ratios and provide responsive modern sources while preserving appropriate alt text.", "priority": 25, "findingIds": [ "AMZ-020" ], "guidanceId": "html", "status": "open" }, { "id": "TASK-26", "title": "Remove synchronous XHR and deprecated Shared Storage use, resolve cookie issues, and retest BFCache and inspector warnings.", "priority": 26, "findingIds": [ "AMZ-021" ], "guidanceId": "html", "status": "open" }, { "id": "TASK-27", "title": "Roll out CSP with frame-ancestors and Trusted Types where appropriate, nosniff, strict referrer/permissions policies, and modern cookie controls.", "priority": 27, "findingIds": [ "AMZ-027" ], "guidanceId": "security", "status": "open" }, { "id": "TASK-28", "title": "If agentic commerce is intended, expose bounded WebMCP tools/agentic forms for search, product details, cart, and checkout with confirmation gates.", "priority": 28, "findingIds": [ "AMZ-035" ], "guidanceId": "webmcp", "status": "open" }, { "id": "TASK-29", "title": "Use same-document transitions for carousel/menu state and cross-document View Transitions for eligible retail navigation, with reduced-motion fallbacks.", "priority": 29, "findingIds": [ "AMZ-002" ], "guidanceId": "same-document-transitions", "status": "open" }, { "id": "TASK-30", "title": "Implement carousels with scroll snap and overscroll containment while retaining buttons and keyboard operation.", "priority": 30, "findingIds": [ "AMZ-003" ], "guidanceId": "carousel-slide-effects", "status": "open" }, { "id": "TASK-31", "title": "Use container scroll-state queries or a declarative scroll-driven header/progress affordance where the page length warrants it.", "priority": 31, "findingIds": [ "AMZ-004" ], "guidanceId": "shrinking-header-on-scroll", "status": "open" }, { "id": "TASK-32", "title": "Use popover/dialog plus CSS anchor positioning and position fallbacks for menus, tips, and transient overlays.", "priority": 32, "findingIds": [ "AMZ-005" ], "guidanceId": "position-aware-tooltips", "status": "open" }, { "id": "TASK-33", "title": "Fix the late module dependency/ordering issue and keep production console error-free.", "priority": 33, "findingIds": [ "AMZ-019" ], "guidanceId": "performance", "status": "open" }, { "id": "TASK-34", "title": "Add accurate Organization/WebSite JSON-LD, including SearchAction only if it matches a reliable crawlable search URL.", "priority": 34, "findingIds": [ "AMZ-023" ], "guidanceId": "html", "status": "open" }, { "id": "TASK-35", "title": "Add a valid manifest and a lightweight offline/retry fallback for browsing state, or explicitly document why installability is out of scope.", "priority": 35, "findingIds": [ "AMZ-029" ], "guidanceId": "html", "status": "open" } ], "budget": { "pathCount": 6, "auditPasses": 1 }, "agent": "pi", "runId": "2026-07-28T09-42-36-188Z" }