{ "url": "https://dmarket.docomo.ne.jp", "auditedAt": "2026-07-23T05:31:40.000Z", "mode": "report", "status": "completed", "statusDetail": "Coverage-complete report-only audit of six representative paths. Not covered: authenticated account/history and actual third-party merchant checkout, because credentials and purchases were out of scope.", "page": { "appType": "mpa", "framework": "Server-rendered MPA with jQuery and Swiper", "notes": "Japanese NTT DOCOMO marketplace scheduled to end service on 2026-07-28. Homepage content is server-rendered, with asynchronous affiliate/recommendation data and a blocking closure notice." }, "evidenceUsed": [ "screenshot", "dom", "layout-metrics", "evaluate-probe", "discoverability", "trace", "har", "headers", "cookies", "trackers", "images", "secrets", "heap-summary", "Lighthouse", "curl robots/sitemap" ], "guidanceConsulted": [ "dark-mode", "component-specific-light-dark-theme", "accessibility", "adapt-scrollbar-to-contrast-preferences", "same-document-transitions", "cross-document-transitions", "group-element-transitions", "faster-spa-view-transitions", "scrollytelling", "parallax-scroll-effects", "scroll-entry-exit-effects", "carousel-slide-effects", "physics-based-easing", "individual-transform-properties", "animate-element-entry-exit", "animate-to-from-top-layer", "animate-to-intrinsic-sizes", "dynamic-sibling-animations", "interactive-content-reveal", "pull-to-reveal", "swipe-to-remove", "shrinking-header-on-scroll", "scroll-progress-indicator", "scroll-position-aware-elements", "scroll-snap-realtime-feedback", "scroll-snap-state-sync", "scroll-target-on-load", "soft-edge-content-fade", "scrollability-affordance-hints", "anchor-positioning-tab-underline", "position-aware-tooltips", "interest-triggered-tooltips", "interest-triggered-action-previews", "directional-navigation-transitions", "carousel-snap-highlights", "navigation-drawer", "stack-drill-down", "persistent-app-tours", "persistent-toast-notifications", "light-dismiss-a-dialog", "platform-controls-dismiss-dialog", "declarative-dialog-popover-control", "animated-select-picker", "branded-select-styling", "brand-consistent-forms", "custom-select-picker-layouts", "rich-media-picker", "complex-shapes", "shaped-cutouts", "overflow-clipping-control", "visually-texture-content", "apply-webgl-shaders", "interactive-content-in-3d-scenes", "highlight-text-ranges", "prevent-text-wrapping", "customize-scrollbar-color-and-thickness", "export-html-media-from-canvas", "fluid-scaling", "calculate-with-intrinsic-sizes", "css-layout", "size-aware-styling", "content-based-styling", "child-state-based-styling", "design-token-reactivity", "dynamic-sibling-styling", "form-fields-automatically-fit-contents", "improve-text-layout-and-legibility", "forms", "accessible-error-announcement", "required-field-feedback", "validate-input-after-interaction", "identify-inp-causes", "schedule-tasks-by-priority", "optimize-preload-priority", "improve-next-page-load-performance", "interactions-in-complex-layouts", "performance", "visually-stable-font-fallbacks", "break-up-long-tasks", "identify-heavy-scripts", "optimize-script-priority", "defer-rendering-heavy-content", "defer-work-until-scroll-ends", "optimize-image-priority", "conditional-async-dependencies", "expose-canvas-content-to-browser-features", "move-dom-element-without-losing-state", "precise-text-alignment", "visually-stable-mixed-fonts", "css", "html", "reduce-style-repetition", "security", "privacy", "batch-analytics-events", "full-session-analytics", "calculate-total-foreground-time", "passkeys", "passkey-registration", "passkey-authentication", "passkey-reauthentication", "passkey-conditional-create", "passkey-management", "flicker-free-client-side-ab-testing", "consistent-cross-document-transitions", "stabilize-reactive-state", "resilient-context-menus-and-nested-dropdowns", "persistent-top-layer-ui", "detect-initial-visibility-state", "sequence-distributed-events", "translator", "language-detection", "support-global-calendar-systems", "capture-location-agnostic-data", "format-human-readable-durations", "manage-recurring-intervals", "calculate-event-differentials", "coordinate-global-events", "model-partial-time-concepts", "search-hidden-content", "select-menu-interaction", "style-parent-with-has", "autofill-address-form", "autofill-payment-form", "autofill-sign-in-form", "autofill-sign-up-form", "autofill-highlight-inputs", "deliver-optimized-decorative-images", "resolution-optimized-pseudo-elements", "deprioritize-background-fetches", "efficient-background-processing", "webmcp", "agentic-forms", "agentic-javascript-tools", "language-model", "summarizer" ], "artifacts": [ { "type": "screenshot", "path": "evidence/404-mobile.png", "caption": "404 mobile", "findingIds": [] }, { "type": "other", "path": "evidence/404-probe.json", "caption": "404 probe", "findingIds": [] }, { "type": "other", "path": "evidence/cookies.json", "caption": "cookies", "findingIds": [ "F21" ] }, { "type": "discoverability", "path": "evidence/discoverability", "caption": "discoverability", "findingIds": [] }, { "type": "screenshot", "path": "evidence/discoverability-crawler.png", "caption": "discoverability crawler", "findingIds": [] }, { "type": "screenshot", "path": "evidence/discoverability-rendered.png", "caption": "discoverability rendered", "findingIds": [] }, { "type": "other", "path": "evidence/headers.json", "caption": "headers", "findingIds": [ "F21" ] }, { "type": "heap", "path": "evidence/heap-baseline", "caption": "heap baseline", "findingIds": [] }, { "type": "heap", "path": "evidence/heap-post", "caption": "heap post", "findingIds": [] }, { "type": "screenshot", "path": "evidence/home-desktop.png", "caption": "home desktop", "findingIds": [ "F05" ] }, { "type": "dom", "path": "evidence/home-dom.json", "caption": "home dom", "findingIds": [] }, { "type": "layout", "path": "evidence/home-mobile-layout.json", "caption": "home mobile layout", "findingIds": [ "F10" ] }, { "type": "screenshot", "path": "evidence/home-mobile.png", "caption": "home mobile", "findingIds": [ "F04", "F05", "F06", "F08", "F14" ] }, { "type": "har", "path": "evidence/home-network", "caption": "home network", "findingIds": [ "F11", "F22" ] }, { "type": "har-summary", "path": "evidence/home-network-summary.json", "caption": "home network summary", "findingIds": [ "F11", "F12", "F22" ] }, { "type": "trace", "path": "evidence/home-perf", "caption": "home perf", "findingIds": [ "F09" ] }, { "type": "trace-summary", "path": "evidence/home-perf-summary.json", "caption": "home perf summary", "findingIds": [ "F09" ] }, { "type": "screenshot", "path": "evidence/home-preferences.png", "caption": "home preferences", "findingIds": [ "F01", "F02" ] }, { "type": "other", "path": "evidence/home-recon.json", "caption": "home recon", "findingIds": [ "F15", "F20" ] }, { "type": "other", "path": "evidence/images.json", "caption": "images", "findingIds": [ "F10", "F13", "F16", "F24" ] }, { "type": "lighthouse", "path": "evidence/lighthouse-home.json", "caption": "lighthouse home", "findingIds": [ "F09", "F10", "F11", "F12", "F13", "F14", "F15", "F16", "F17", "F18", "F24" ] }, { "type": "other", "path": "evidence/login-probe.json", "caption": "login probe", "findingIds": [ "F23" ] }, { "type": "dom", "path": "evidence/notice-dom.json", "caption": "notice dom", "findingIds": [] }, { "type": "screenshot", "path": "evidence/notice-mobile.png", "caption": "notice mobile", "findingIds": [] }, { "type": "other", "path": "evidence/platform-probe.json", "caption": "platform probe", "findingIds": [ "F01", "F02", "F03", "F04", "F06", "F07", "F08", "F11", "F13", "F15", "F18", "F19", "F20" ] }, { "type": "other", "path": "evidence/robots.txt", "caption": "robots", "findingIds": [ "F19" ] }, { "type": "other", "path": "evidence/secrets.json", "caption": "secrets", "findingIds": [] }, { "type": "dom", "path": "evidence/shop-detail-dom.json", "caption": "shop detail dom", "findingIds": [] }, { "type": "screenshot", "path": "evidence/shop-detail-mobile.png", "caption": "shop detail mobile", "findingIds": [ "F03" ] }, { "type": "dom", "path": "evidence/shoplist-dom.json", "caption": "shoplist dom", "findingIds": [] }, { "type": "screenshot", "path": "evidence/shoplist-mobile.png", "caption": "shoplist mobile", "findingIds": [ "F03", "F07" ] }, { "type": "other", "path": "evidence/sitemap.xml", "caption": "sitemap", "findingIds": [ "F19" ] }, { "type": "other", "path": "evidence/trackers.json", "caption": "trackers", "findingIds": [ "F22" ] } ], "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": "Direct browser evidence and guidance-backed review", "evidence": "The preferences screenshot is pixel-identical in appearance to the default light capture, and the CSS probe found no prefers-color-scheme rule.", "artifacts": [ "evidence/home-preferences.png", "evidence/platform-probe.json" ], "findingIds": [ "F01" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-reduced-motion", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, performance, network, or interaction evidence", "evidence": "Under the combined reduced-motion emulation, the page exposed no active Web Animations and no autoplay media; the preference capture remained usable.", "artifacts": [ "evidence/home-preferences.png", "evidence/platform-probe.json" ], "pathIds": [ "home" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-contrast", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "The CSS probe found no prefers-contrast or forced-colors rules; the emulated high-contrast capture remained unchanged.", "artifacts": [ "evidence/home-preferences.png", "evidence/platform-probe.json" ], "findingIds": [ "F02" ] }, { "principleId": "implement-natural-interactions", "checkId": "view-transitions", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "CSS inspection across the loaded page found no view-transition declarations; representative routes are conventional MPA navigations.", "artifacts": [ "evidence/platform-probe.json", "evidence/shoplist-mobile.png", "evidence/shop-detail-mobile.png" ], "findingIds": [ "F03" ] }, { "principleId": "implement-natural-interactions", "checkId": "scroll-driven-animations", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from representative route and interaction recon", "evidence": "No scroll-linked animation was present on the representative routes, so there is no scroll animation implementation to classify.", "reason": "No scroll-linked animation was present on the representative routes, so there is no scroll animation implementation to classify." }, { "principleId": "implement-natural-interactions", "checkId": "physical-gestures", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, performance, network, or interaction evidence", "evidence": "CSS inspection found native scroll-snap support and the representative pages scroll with the platform; no custom pointer-drag handler was observed.", "artifacts": [ "evidence/platform-probe.json" ], "pathIds": [ "home" ] }, { "principleId": "provide-guided-navigation", "checkId": "scroll-state-aware-chrome", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "Mobile captures and CSS inspection show a fixed header but no scroll-state container query or progress indicator.", "artifacts": [ "evidence/home-mobile.png", "evidence/platform-probe.json" ], "findingIds": [ "F04" ] }, { "principleId": "provide-guided-navigation", "checkId": "anchored-positioning", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from representative route and interaction recon", "evidence": "No tooltip, non-modal popover, or edge-positioned menu was exposed on the representative unauthenticated paths.", "reason": "No tooltip, non-modal popover, or edge-positioned menu was exposed on the representative unauthenticated paths." }, { "principleId": "provide-guided-navigation", "checkId": "directs-attention", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, performance, network, or interaction evidence", "evidence": "The listing screenshot clearly marks the selected shop category in red and keeps the page title and filtering controls adjacent to the results.", "artifacts": [ "evidence/shoplist-mobile.png" ], "pathIds": [ "shoplist" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "no-intrusive-interruptions", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "Desktop and mobile initial-load screenshots show a modal covering the primary content before any user action. The message is important, but the interruption occupies most of the viewport.", "artifacts": [ "evidence/home-desktop.png", "evidence/home-mobile.png" ], "findingIds": [ "F05" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "semantic-dismissible-primitives", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "The live DOM probe found visible .c-modal-* divs with no role=dialog, aria-modal, or native dialog element.", "artifacts": [ "evidence/platform-probe.json", "evidence/home-mobile.png" ], "findingIds": [ "F06" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "reduced-chrome", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, performance, network, or interaction evidence", "evidence": "After the closure notice, listing and detail screenshots devote the viewport to shop cards, point rates, merchant description, and a clear merchant CTA rather than ornamental framing.", "artifacts": [ "evidence/shoplist-mobile.png", "evidence/shop-detail-mobile.png" ], "pathIds": [ "shoplist", "shop-detail" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "responsive-no-horizontal-scroll", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, performance, network, or interaction evidence", "evidence": "At 360px, the layout primitive measured only a 1px rounding difference (376px scroll width vs 375px visual viewport), with no clipped content; viewport metadata is present.", "artifacts": [ "evidence/home-mobile-layout.json", "evidence/home-mobile.png" ], "pathIds": [ "home" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "component-level-responsiveness", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "The loaded stylesheet probe found no @container rules even though cards and navigation components recur in narrow and wide contexts.", "artifacts": [ "evidence/platform-probe.json", "evidence/shoplist-mobile.png" ], "findingIds": [ "F07" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "input-modality-aware", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "The interaction probe found 12 visible controls below 24 CSS px in one dimension, including a 16x16 modal close button and 16-18px-high links.", "artifacts": [ "evidence/platform-probe.json", "evidence/home-mobile.png" ], "findingIds": [ "F08" ] }, { "principleId": "support-core-task-success", "checkId": "clear-purpose-and-primary-action", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, performance, network, or interaction evidence", "evidence": "The listing states ショップ一覧 and exposes categories; the shop detail states the merchant, point rate, and a prominent サイトへ進む action.", "artifacts": [ "evidence/shoplist-mobile.png", "evidence/shop-detail-mobile.png" ], "pathIds": [ "shoplist", "shop-detail" ] }, { "principleId": "support-core-task-success", "checkId": "primary-flow-completion", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, performance, network, or interaction evidence", "evidence": "The representative browse flow reaches a populated shop list, a detailed merchant offer, and a prominent outbound merchant CTA without an account wall.", "artifacts": [ "evidence/shoplist-mobile.png", "evidence/shop-detail-mobile.png" ], "pathIds": [ "shoplist", "shop-detail" ] }, { "principleId": "support-core-task-success", "checkId": "clear-system-state-and-recovery", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, performance, network, or interaction evidence", "evidence": "A nonexistent route returns a branded Japanese 404 with an explanation, reload advice, cache/cookie recovery steps, and a top-page link.", "artifacts": [ "evidence/404-mobile.png", "evidence/404-probe.json" ], "pathIds": [ "error-state" ] }, { "principleId": "be-fast-and-stable", "checkId": "good-core-web-vitals", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "Lighthouse measured performance 40, FCP 4.5s, LCP 8.0s, Speed Index 7.3s, and TTI 10.8s. A less-throttled trace measured LCP 2.28s, confirming network/CPU sensitivity.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-perf-summary.json", "evidence/home-perf" ], "findingIds": [ "F09" ] }, { "principleId": "be-fast-and-stable", "checkId": "visual-stability", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "Lighthouse reported CLS 0.403 with three shifts; the mobile layout primitive independently observed CLS 0.317 from shifts at about 3.26s and 4.89s. The image audit found 95/100 images without explicit dimensions.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-mobile-layout.json", "evidence/images.json" ], "findingIds": [ "F10" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-main-thread", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, performance, network, or interaction evidence", "evidence": "The trace recorded zero tasks over 50ms and 0ms total blocking time in its 8.8s capture; Lighthouse TBT was 110ms.", "artifacts": [ "evidence/home-perf-summary.json", "evidence/lighthouse-home.json" ], "pathIds": [ "home" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-resource-delivery", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "The HAR identified parser-inserted styles and multiple classic scripts; the DOM confirmed the first-party scripts have neither async nor defer. Lighthouse estimated 2.13s render-blocking savings and 581KiB cache-lifetime savings.", "artifacts": [ "evidence/home-network-summary.json", "evidence/home-network", "evidence/platform-probe.json", "evidence/lighthouse-home.json" ], "findingIds": [ "F11" ] }, { "principleId": "be-fast-and-stable", "checkId": "trim-unused-and-duplicate-code", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "Lighthouse estimated 278KiB unused JavaScript and 34KiB unused CSS. Four Google tag loader requests alone transferred about 578KiB.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-network-summary.json" ], "findingIds": [ "F12" ] }, { "principleId": "be-inclusive", "checkId": "names-roles-labels", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "Lighthouse failed link-name; the DOM probe listed at least 20 visible unnamed interactive elements, and the image audit found 21 images without alt text.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/platform-probe.json", "evidence/images.json" ], "findingIds": [ "F13" ] }, { "principleId": "be-inclusive", "checkId": "sufficient-contrast", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "Lighthouse accessibility failed the color-contrast audit on the homepage.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-mobile.png" ], "findingIds": [ "F14" ] }, { "principleId": "be-inclusive", "checkId": "structure-and-focus", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "Lighthouse failed heading-order; the DOM has an empty H1 followed by H3 navigation headings. The modal is not exposed as a dialog, although the sampled keyboard focus outline was visible.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-recon.json", "evidence/platform-probe.json" ], "findingIds": [ "F15" ] }, { "principleId": "be-inclusive", "checkId": "legible-text", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, performance, network, or interaction evidence", "evidence": "Mobile listing, detail, notice, and 404 captures show readable Japanese body text with stable line wrapping and no clipping at 360px.", "artifacts": [ "evidence/shoplist-mobile.png", "evidence/shop-detail-mobile.png", "evidence/notice-mobile.png", "evidence/404-mobile.png" ], "pathIds": [ "shoplist", "shop-detail", "service-notice", "error-state" ] }, { "principleId": "be-inclusive", "checkId": "zoom-reflow-targets-and-media", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "The interaction probe found 12 visible controls below 24 CSS px in one dimension, including a 16x16 modal close button and 16-18px-high links.", "artifacts": [ "evidence/platform-probe.json", "evidence/home-mobile.png" ], "findingIds": [ "F08" ] }, { "principleId": "follow-best-practices", "checkId": "no-console-errors", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, performance, network, or interaction evidence", "evidence": "Lighthouse did not report its errors-in-console audit as failing during the measured homepage load.", "artifacts": [ "evidence/lighthouse-home.json" ], "pathIds": [ "home" ] }, { "principleId": "follow-best-practices", "checkId": "sound-document-and-assets", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "Lighthouse reported unsized images and one deprecated API warning; the image primitive found 95 of 100 images without width and height.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/images.json" ], "findingIds": [ "F16" ] }, { "principleId": "follow-best-practices", "checkId": "browser-platform-hygiene", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "Lighthouse reported a BFCache blocker and missing source maps for large first-party JavaScript in addition to the deprecation warning.", "artifacts": [ "evidence/lighthouse-home.json" ], "findingIds": [ "F17" ] }, { "principleId": "be-discoverable", "checkId": "title-and-description", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, performance, network, or interaction evidence", "evidence": "The homepage exposes a descriptive Japanese title and a specific meta description in both raw and rendered HTML.", "artifacts": [ "evidence/home-recon.json", "evidence/discoverability" ], "pathIds": [ "home" ] }, { "principleId": "be-discoverable", "checkId": "crawlable-and-mobile-friendly", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "The DOM probe found at least 20 visible unnamed links and Lighthouse failed link-name. URLs are real hrefs and a viewport meta exists, but link purpose is not exposed reliably.", "artifacts": [ "evidence/platform-probe.json", "evidence/lighthouse-home.json" ], "findingIds": [ "F18" ] }, { "principleId": "be-discoverable", "checkId": "canonical-and-indexing-signals", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "robots.txt returned 200 and allows primary content, while /sitemap.xml returned HTTP 404. Canonical URLs are present.", "artifacts": [ "evidence/robots.txt", "evidence/sitemap.xml", "evidence/platform-probe.json" ], "findingIds": [ "F19" ] }, { "principleId": "be-discoverable", "checkId": "structured-and-shareable-metadata", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "The homepage has Open Graph tags but the DOM probe found no JSON-LD for the Organization/WebSite or marketplace entities.", "artifacts": [ "evidence/home-recon.json", "evidence/platform-probe.json" ], "findingIds": [ "F20" ] }, { "principleId": "be-private-and-secure", "checkId": "secure-transport-and-headers", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "HTTPS is used, but the headers primitive found no CSP, HSTS, X-Content-Type-Options, Referrer-Policy, or Permissions-Policy. All eight observed cookies were flagged, including three Google Analytics cookies without Secure and with SameSite=None.", "artifacts": [ "evidence/headers.json", "evidence/cookies.json" ], "findingIds": [ "F21" ] }, { "principleId": "be-private-and-secure", "checkId": "data-minimisation-and-third-parties", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "The HAR recorded 71/79 requests and 1.318MB/1.435MB as cross-origin by host classification; tracker evidence found two known tracker origins. Four tag-manager/gtag files transferred about 578KiB before user interaction.", "artifacts": [ "evidence/home-network-summary.json", "evidence/home-network", "evidence/trackers.json" ], "findingIds": [ "F22" ] }, { "principleId": "be-private-and-secure", "checkId": "in-context-permissions-and-modern-auth", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "No permission prompt was triggered on load, but the d Account redirect presented ID-first sign-in and the rendered/auth source probe found no WebAuthn or PublicKeyCredential signal.", "artifacts": [ "evidence/login-probe.json" ], "findingIds": [ "F23" ] }, { "principleId": "be-private-and-secure", "checkId": "defensive-browser-policies", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "HTTPS is used, but the headers primitive found no CSP, HSTS, X-Content-Type-Options, Referrer-Policy, or Permissions-Policy. All eight observed cookies were flagged, including three Google Analytics cookies without Secure and with SameSite=None.", "artifacts": [ "evidence/headers.json", "evidence/cookies.json" ], "findingIds": [ "F21" ] }, { "principleId": "be-resilient", "checkId": "progressive-enhancement", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, performance, network, or interaction evidence", "evidence": "The discoverability fetch received 200 and 379,566 bytes of substantive server HTML; the site is not an empty JS shell and title/description survive without scripting.", "artifacts": [ "evidence/discoverability", "evidence/discoverability-crawler.png" ], "pathIds": [ "home" ] }, { "principleId": "be-resilient", "checkId": "resilient-runtime-behaviour", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, performance, network, or interaction evidence", "evidence": "The blocking notice remains fully contained and dismissible at both desktop and narrow mobile sizes; listing/detail content also remains usable at 360px.", "artifacts": [ "evidence/home-desktop.png", "evidence/home-mobile.png", "evidence/shop-detail-mobile.png" ], "pathIds": [ "home", "shop-detail" ] }, { "principleId": "be-resilient", "checkId": "offline-and-installable", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from representative route and interaction recon", "evidence": "This commerce directory redirects transactions to online merchant sites and is intrinsically network-dependent; an installable offline app is not necessary for its core task.", "reason": "This commerce directory redirects transactions to online merchant sites and is intrinsically network-dependent; an installable offline app is not necessary for its core task." }, { "principleId": "be-resilient", "checkId": "network-and-http-failure-states", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, performance, network, or interaction evidence", "evidence": "The tested 404 route gives a clear failure explanation and concrete recovery routes rather than a blank shell or infinite spinner.", "artifacts": [ "evidence/404-mobile.png", "evidence/404-probe.json" ], "pathIds": [ "error-state" ] }, { "principleId": "be-internationalised", "checkId": "lang-dir-and-logical-properties", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from representative route and interaction recon", "evidence": "The service is explicitly a Japan-only, Japanese-language marketplace; alternate writing modes are outside the observed product scope.", "reason": "The service is explicitly a Japan-only, Japanese-language marketplace; alternate writing modes are outside the observed product scope." }, { "principleId": "be-internationalised", "checkId": "locale-aware-data", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from representative route and interaction recon", "evidence": "No user-selectable locale or cross-locale date, number, or currency workflow is offered; displayed dates and point rates are for the single Japanese locale.", "reason": "No user-selectable locale or cross-locale date, number, or currency workflow is offered; displayed dates and point rates are for the single Japanese locale." }, { "principleId": "be-internationalised", "checkId": "time-zone-correctness", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from representative route and interaction recon", "evidence": "No cross-time-zone scheduling or event coordination flow exists on the audited Japanese marketplace paths.", "reason": "No cross-time-zone scheduling or event coordination flow exists on the audited Japanese marketplace paths." }, { "principleId": "be-trustworthy", "checkId": "no-dark-patterns", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, performance, network, or interaction evidence", "evidence": "The service end date and implications are stated plainly, no consent wall or disguised advertisement appeared, and the detail page labels point rates and outbound action clearly.", "artifacts": [ "evidence/notice-mobile.png", "evidence/shop-detail-mobile.png" ], "pathIds": [ "service-notice", "shop-detail" ] }, { "principleId": "be-trustworthy", "checkId": "humane-error-handling", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from representative route and interaction recon", "evidence": "No editable validation form was present on the representative marketplace, listing, detail, notice, or 404 paths.", "reason": "No editable validation form was present on the representative marketplace, listing, detail, notice, or 404 paths." }, { "principleId": "be-trustworthy", "checkId": "trustworthy-input-assistance", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from representative route and interaction recon", "evidence": "No address, payment, registration, or password form is owned by the audited host on the representative paths; sign-in redirects to the separate d Account service.", "reason": "No address, payment, registration, or password form is owned by the audited host on the representative paths; sign-in redirects to the separate d Account service." }, { "principleId": "be-trustworthy", "checkId": "safe-commercial-and-account-flows", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, performance, network, or interaction evidence", "evidence": "The merchant detail shows the reward rate before the outbound action and labels that action as leaving for the merchant; no hidden subscription or continuity commitment appears.", "artifacts": [ "evidence/shop-detail-mobile.png" ], "pathIds": [ "shop-detail" ] }, { "principleId": "be-sustainable", "checkId": "optimised-assets", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "Lighthouse estimated 316KiB image-delivery savings; the image probe found missing intrinsic dimensions on 95 images and no responsive source on the raster image it flagged.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/images.json" ], "findingIds": [ "F24" ] }, { "principleId": "be-sustainable", "checkId": "no-wasteful-work", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "The HAR recorded 71/79 requests and 1.318MB/1.435MB as cross-origin by host classification; tracker evidence found two known tracker origins. Four tag-manager/gtag files transferred about 578KiB before user interaction.", "artifacts": [ "evidence/home-network-summary.json", "evidence/home-network", "evidence/trackers.json" ], "findingIds": [ "F22" ] }, { "principleId": "be-sustainable", "checkId": "third-party-and-media-budget", "status": "issues", "confidence": "high", "method": "Direct browser evidence and guidance-backed review", "evidence": "The HAR recorded 71/79 requests and 1.318MB/1.435MB as cross-origin by host classification; tracker evidence found two known tracker origins. Four tag-manager/gtag files transferred about 578KiB before user interaction.", "artifacts": [ "evidence/home-network-summary.json", "evidence/home-network", "evidence/trackers.json" ], "findingIds": [ "F22" ] }, { "principleId": "be-agent-ready", "checkId": "structured-agent-capabilities", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from representative route and interaction recon", "evidence": "The retiring marketplace exposes no declared agent-facing surface; the emerging WebMCP capability is treated as an opportunity, not an obligation.", "reason": "The retiring marketplace exposes no declared agent-facing surface; the emerging WebMCP capability is treated as an opportunity, not an obligation." }, { "principleId": "be-agent-ready", "checkId": "on-device-inference", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from representative route and interaction recon", "evidence": "No summarisation or generative task is part of the observed marketplace journey, so on-device inference would not clearly improve the core task.", "reason": "No summarisation or generative task is part of the observed marketplace journey, so on-device inference would not clearly improve the core task." }, { "principleId": "be-memory-efficient", "checkId": "no-leak-under-repeated-interaction", "status": "pass", "confidence": "medium", "method": "Direct visual, DOM, performance, network, or interaction evidence", "evidence": "After ten full-page down/up scroll cycles, heap self size increased only 293,503 bytes (1.5%) and node count 1.1%; this bounded single-run delta does not indicate unbounded retention.", "artifacts": [ "evidence/heap-baseline", "evidence/heap-post" ], "pathIds": [ "shop-detail" ] }, { "principleId": "be-memory-efficient", "checkId": "bounded-footprint", "status": "pass", "confidence": "medium", "method": "Direct visual, DOM, performance, network, or interaction evidence", "evidence": "The representative merchant page heap was about 19.2MB at baseline, proportionate to the image-rich detail page and its scripts.", "artifacts": [ "evidence/heap-baseline" ], "pathIds": [ "shop-detail" ] }, { "principleId": "be-memory-efficient", "checkId": "no-detached-dom-or-unbounded-listeners", "status": "pass", "confidence": "medium", "method": "Direct visual, DOM, performance, network, or interaction evidence", "evidence": "Neither heap summary surfaced Detached* constructors among retained top constructors; closure count changed from 15,492 to 15,510 after repeated scrolling, not an accumulating pattern.", "artifacts": [ "evidence/heap-baseline", "evidence/heap-post" ], "pathIds": [ "shop-detail" ] } ], "principleOutcomes": [ { "principleId": "respect-user-preferences", "expectation": "default", "status": "issues", "findingIds": [ "F01", "F02" ] }, { "principleId": "implement-natural-interactions", "expectation": "default", "status": "issues", "findingIds": [ "F03" ] }, { "principleId": "provide-guided-navigation", "expectation": "default", "status": "issues", "findingIds": [ "F04" ] }, { "principleId": "maximize-content-reduce-noise", "expectation": "default", "status": "issues", "findingIds": [ "F05", "F06" ] }, { "principleId": "adapt-to-the-form-factor", "expectation": "default", "status": "issues", "findingIds": [ "F07", "F08" ] }, { "principleId": "support-core-task-success", "expectation": "default", "status": "pass" }, { "principleId": "be-fast-and-stable", "expectation": "default", "status": "issues", "findingIds": [ "F09", "F10", "F11", "F12" ] }, { "principleId": "be-inclusive", "expectation": "default", "status": "issues", "findingIds": [ "F13", "F14", "F15", "F08" ] }, { "principleId": "follow-best-practices", "expectation": "default", "status": "issues", "findingIds": [ "F16", "F17" ] }, { "principleId": "be-discoverable", "expectation": "default", "status": "issues", "findingIds": [ "F18", "F19", "F20" ] }, { "principleId": "be-private-and-secure", "expectation": "default", "status": "issues", "findingIds": [ "F21", "F22", "F23" ] }, { "principleId": "be-resilient", "expectation": "contextual", "status": "pass" }, { "principleId": "be-internationalised", "expectation": "contextual", "status": "not-applicable", "reason": "The service is explicitly a Japan-only, Japanese-language marketplace; alternate writing modes are outside the observed product scope. No user-selectable locale or cross-locale date, number, or currency workflow is offered; displayed dates and point rates are for the single Japanese locale. No cross-time-zone scheduling or event coordination flow exists on the audited Japanese marketplace paths." }, { "principleId": "be-trustworthy", "expectation": "default", "status": "pass" }, { "principleId": "be-sustainable", "expectation": "contextual", "status": "issues", "findingIds": [ "F24", "F22" ] }, { "principleId": "be-agent-ready", "expectation": "contextual", "status": "not-applicable", "reason": "The retiring marketplace exposes no declared agent-facing surface; the emerging WebMCP capability is treated as an opportunity, not an obligation. No summarisation or generative task is part of the observed marketplace journey, so on-device inference would not clearly improve the core task." }, { "principleId": "be-memory-efficient", "expectation": "default", "status": "pass" } ], "paths": [ { "id": "home", "description": "Homepage and initial closure notice; global navigation, preferences, security, performance, accessibility, and no-JS behavior.", "url": "https://dmarket.docomo.ne.jp/", "conditions": [ "desktop", "viewport 360x800", "prefers-color-scheme: dark", "prefers-reduced-motion: reduce", "prefers-contrast: more", "JavaScript disabled crawler view" ], "result": "issues" }, { "id": "shoplist", "description": "Representative listing archetype for browsing shops, categories, filters, card grids, and responsive layout.", "url": "https://dmarket.docomo.ne.jp/shoplist/", "conditions": [ "viewport 360x800" ], "result": "issues" }, { "id": "shop-detail", "description": "Representative merchant detail and primary outbound shopping journey, also used for repeated-scroll memory testing.", "url": "https://dmarket.docomo.ne.jp/shop/10001/program/10066/", "conditions": [ "viewport 360x800", "10 repeated scroll cycles" ], "result": "issues" }, { "id": "service-notice", "description": "Representative editorial/notice page for the announced service closure and readable long-form content.", "url": "https://dmarket.docomo.ne.jp/information/11957/", "conditions": [ "viewport 360x800" ], "result": "pass" }, { "id": "error-state", "description": "Synthetic nonexistent route to exercise HTTP/navigation failure recovery.", "url": "https://dmarket.docomo.ne.jp/this-route-does-not-exist-audit", "conditions": [ "viewport 360x800" ], "result": "pass" }, { "id": "login-redirect", "description": "Authentication entry redirect to d Account, inspected for permission timing and modern-auth signals; no credentials submitted.", "url": "https://dmarket.docomo.ne.jp/login/index.html", "conditions": [ "unauthenticated" ], "result": "issues" } ], "findings": [ { "id": "F01", "severity": "medium", "principleId": "respect-user-preferences", "principleCheckId": "respects-color-scheme", "guidanceId": "dark-mode", "guidanceCategory": "user-experience", "summary": "The site remains light when the user requests a dark color scheme.", "evidence": "The preferences screenshot is pixel-identical in appearance to the default light capture, and the CSS probe found no prefers-color-scheme rule.", "artifacts": [ "evidence/home-preferences.png", "evidence/platform-probe.json" ], "suggestedFix": "Declare color-scheme and provide preference-driven light/dark surface, text, border, and browser-chrome colors.", "effort": "medium" }, { "id": "F02", "severity": "low", "principleId": "respect-user-preferences", "principleCheckId": "respects-contrast", "guidanceId": "adapt-scrollbar-to-contrast-preferences", "guidanceCategory": "accessibility", "summary": "The stylesheet does not adapt to contrast or forced-colors preferences.", "evidence": "The CSS probe found no prefers-contrast or forced-colors rules; the emulated high-contrast capture remained unchanged.", "artifacts": [ "evidence/home-preferences.png", "evidence/platform-probe.json" ], "suggestedFix": "Add forced-colors and prefers-contrast adaptations for borders, focus indicators, controls, and scroll affordances.", "effort": "small" }, { "id": "F03", "severity": "low", "principleId": "implement-natural-interactions", "principleCheckId": "view-transitions", "guidanceId": "cross-document-transitions", "guidanceCategory": "user-experience", "summary": "Navigation uses abrupt cross-document swaps rather than progressive View Transitions.", "evidence": "CSS inspection across the loaded page found no view-transition declarations; representative routes are conventional MPA navigations.", "artifacts": [ "evidence/platform-probe.json", "evidence/shoplist-mobile.png", "evidence/shop-detail-mobile.png" ], "suggestedFix": "Add @view-transition { navigation: auto } and stable view-transition-name values, with reduced-motion handling.", "effort": "small" }, { "id": "F04", "severity": "low", "principleId": "provide-guided-navigation", "principleCheckId": "scroll-state-aware-chrome", "guidanceId": "shrinking-header-on-scroll", "guidanceCategory": "user-experience", "summary": "The persistent mobile chrome does not communicate scroll state.", "evidence": "Mobile captures and CSS inspection show a fixed header but no scroll-state container query or progress indicator.", "artifacts": [ "evidence/home-mobile.png", "evidence/platform-probe.json" ], "suggestedFix": "Use scroll-state queries or a lightweight progress affordance so persistent chrome responds to position.", "effort": "small" }, { "id": "F05", "severity": "high", "principleId": "maximize-content-reduce-noise", "principleCheckId": "no-intrusive-interruptions", "guidanceId": "light-dismiss-a-dialog", "guidanceCategory": "user-experience", "summary": "A large service-closure notice blocks the marketplace on every homepage load.", "evidence": "Desktop and mobile initial-load screenshots show a modal covering the primary content before any user action. The message is important, but the interruption occupies most of the viewport.", "artifacts": [ "evidence/home-desktop.png", "evidence/home-mobile.png" ], "suggestedFix": "Move the persistent closure notice into prominent in-flow content, or remember dismissal and reserve a modal for the first high-risk action.", "effort": "small" }, { "id": "F06", "severity": "high", "principleId": "maximize-content-reduce-noise", "principleCheckId": "semantic-dismissible-primitives", "guidanceId": "declarative-dialog-popover-control", "guidanceCategory": "user-experience", "summary": "The blocking notice is an ad-hoc div modal without dialog semantics.", "evidence": "The live DOM probe found visible .c-modal-* divs with no role=dialog, aria-modal, or native dialog element.", "artifacts": [ "evidence/platform-probe.json", "evidence/home-mobile.png" ], "suggestedFix": "Implement the blocking notice with , an accessible name, focus containment/restoration, Escape handling, and declarative close actions.", "effort": "medium" }, { "id": "F07", "severity": "low", "principleId": "adapt-to-the-form-factor", "principleCheckId": "component-level-responsiveness", "guidanceId": "size-aware-styling", "guidanceCategory": "css", "summary": "Responsive behavior is viewport-centric rather than component-aware.", "evidence": "The loaded stylesheet probe found no @container rules even though cards and navigation components recur in narrow and wide contexts.", "artifacts": [ "evidence/platform-probe.json", "evidence/shoplist-mobile.png" ], "suggestedFix": "Introduce container queries for reusable card grids and navigation groups where their allocated width, not the viewport, determines layout.", "effort": "medium" }, { "id": "F08", "severity": "medium", "principleId": "adapt-to-the-form-factor", "principleCheckId": "input-modality-aware", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "summary": "Several interactive targets are too small for reliable touch use.", "evidence": "The interaction probe found 12 visible controls below 24 CSS px in one dimension, including a 16x16 modal close button and 16-18px-high links.", "artifacts": [ "evidence/platform-probe.json", "evidence/home-mobile.png" ], "suggestedFix": "Provide at least 24x24 CSS px targets, preferably 44x44 for primary touch controls, while retaining visible :focus-visible styles.", "effort": "small" }, { "id": "F09", "severity": "high", "principleId": "be-fast-and-stable", "principleCheckId": "good-core-web-vitals", "guidanceId": "performance", "guidanceCategory": "performance", "summary": "Mobile load performance is poor.", "evidence": "Lighthouse measured performance 40, FCP 4.5s, LCP 8.0s, Speed Index 7.3s, and TTI 10.8s. A less-throttled trace measured LCP 2.28s, confirming network/CPU sensitivity.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-perf-summary.json", "evidence/home-perf" ], "suggestedFix": "Prioritize the LCP element, reduce initial script and third-party work, and defer non-critical recommendations and analytics.", "effort": "large" }, { "id": "F10", "severity": "high", "principleId": "be-fast-and-stable", "principleCheckId": "visual-stability", "guidanceId": "visually-stable-font-fallbacks", "guidanceCategory": "performance", "summary": "Late content causes severe layout movement.", "evidence": "Lighthouse reported CLS 0.403 with three shifts; the mobile layout primitive independently observed CLS 0.317 from shifts at about 3.26s and 4.89s. The image audit found 95/100 images without explicit dimensions.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-mobile-layout.json", "evidence/images.json" ], "suggestedFix": "Reserve dimensions/aspect-ratio for images, banners, recommendations, and the closure notice before asynchronous content arrives.", "effort": "medium" }, { "id": "F11", "severity": "high", "principleId": "be-fast-and-stable", "principleCheckId": "efficient-resource-delivery", "guidanceId": "optimize-script-priority", "guidanceCategory": "performance", "summary": "Render-blocking and poorly cached resources delay the initial page.", "evidence": "The HAR identified parser-inserted styles and multiple classic scripts; the DOM confirmed the first-party scripts have neither async nor defer. Lighthouse estimated 2.13s render-blocking savings and 581KiB cache-lifetime savings.", "artifacts": [ "evidence/home-network-summary.json", "evidence/home-network", "evidence/platform-probe.json", "evidence/lighthouse-home.json" ], "suggestedFix": "Inline only critical CSS, defer non-critical classic scripts, break dependency chains, compress JSON responses, and apply long immutable caching to versioned assets.", "effort": "large" }, { "id": "F12", "severity": "medium", "principleId": "be-fast-and-stable", "principleCheckId": "trim-unused-and-duplicate-code", "guidanceId": "identify-heavy-scripts", "guidanceCategory": "performance", "summary": "The page ships substantial unused and duplicated script work.", "evidence": "Lighthouse estimated 278KiB unused JavaScript and 34KiB unused CSS. Four Google tag loader requests alone transferred about 578KiB.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-network-summary.json" ], "suggestedFix": "Remove duplicate tag containers, code-split page-specific features, and load recommendation/history code only when its surface is approached.", "effort": "large" }, { "id": "F13", "severity": "high", "principleId": "be-inclusive", "principleCheckId": "names-roles-labels", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "summary": "Many links and images lack accessible names.", "evidence": "Lighthouse failed link-name; the DOM probe listed at least 20 visible unnamed interactive elements, and the image audit found 21 images without alt text.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/platform-probe.json", "evidence/images.json" ], "suggestedFix": "Give every linked card one discernible name, use meaningful alt text or alt=\"\" for decorative images, and remove redundant unnamed nested links.", "effort": "medium" }, { "id": "F14", "severity": "high", "principleId": "be-inclusive", "principleCheckId": "sufficient-contrast", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "summary": "Some text and UI colors fail WCAG contrast.", "evidence": "Lighthouse accessibility failed the color-contrast audit on the homepage.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-mobile.png" ], "suggestedFix": "Adjust muted gray and red-on-light token pairs to meet 4.5:1 for normal text and 3:1 for large text and essential UI.", "effort": "small" }, { "id": "F15", "severity": "medium", "principleId": "be-inclusive", "principleCheckId": "structure-and-focus", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "summary": "Heading structure and modal focus semantics are inconsistent.", "evidence": "Lighthouse failed heading-order; the DOM has an empty H1 followed by H3 navigation headings. The modal is not exposed as a dialog, although the sampled keyboard focus outline was visible.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-recon.json", "evidence/platform-probe.json" ], "suggestedFix": "Use one descriptive H1, sequential section headings and landmarks, and move/restore focus when the dialog opens/closes.", "effort": "medium" }, { "id": "F16", "severity": "medium", "principleId": "follow-best-practices", "principleCheckId": "sound-document-and-assets", "guidanceId": "html", "guidanceCategory": "html", "summary": "Asset markup does not consistently reserve image geometry and uses a deprecated API.", "evidence": "Lighthouse reported unsized images and one deprecated API warning; the image primitive found 95 of 100 images without width and height.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/images.json" ], "suggestedFix": "Emit intrinsic width/height or aspect-ratio for every image and replace the deprecated API identified in the Lighthouse details.", "effort": "medium" }, { "id": "F17", "severity": "medium", "principleId": "follow-best-practices", "principleCheckId": "browser-platform-hygiene", "guidanceId": "html", "guidanceCategory": "html", "summary": "The page has avoidable browser-platform hygiene failures.", "evidence": "Lighthouse reported a BFCache blocker and missing source maps for large first-party JavaScript in addition to the deprecation warning.", "artifacts": [ "evidence/lighthouse-home.json" ], "suggestedFix": "Remove the BFCache blocking behavior, publish production source maps to authorized tooling, and migrate deprecated code.", "effort": "medium" }, { "id": "F18", "severity": "medium", "principleId": "be-discoverable", "principleCheckId": "crawlable-and-mobile-friendly", "guidanceId": "html", "guidanceCategory": "html", "summary": "Many prominent card links have no descriptive link text.", "evidence": "The DOM probe found at least 20 visible unnamed links and Lighthouse failed link-name. URLs are real hrefs and a viewport meta exists, but link purpose is not exposed reliably.", "artifacts": [ "evidence/platform-probe.json", "evidence/lighthouse-home.json" ], "suggestedFix": "Give card anchors descriptive accessible text and avoid empty image-only link wrappers.", "effort": "small" }, { "id": "F19", "severity": "medium", "principleId": "be-discoverable", "principleCheckId": "canonical-and-indexing-signals", "guidanceId": "html", "guidanceCategory": "html", "summary": "The site does not expose a sitemap at the conventional location.", "evidence": "robots.txt returned 200 and allows primary content, while /sitemap.xml returned HTTP 404. Canonical URLs are present.", "artifacts": [ "evidence/robots.txt", "evidence/sitemap.xml", "evidence/platform-probe.json" ], "suggestedFix": "Publish and reference an XML sitemap covering canonical public listing, shop, article, and notice URLs.", "effort": "small" }, { "id": "F20", "severity": "low", "principleId": "be-discoverable", "principleCheckId": "structured-and-shareable-metadata", "guidanceId": "html", "guidanceCategory": "html", "summary": "Share metadata exists, but rich entity metadata is absent.", "evidence": "The homepage has Open Graph tags but the DOM probe found no JSON-LD for the Organization/WebSite or marketplace entities.", "artifacts": [ "evidence/home-recon.json", "evidence/platform-probe.json" ], "suggestedFix": "Add accurate JSON-LD for Organization and WebSite, then Product/Offer or ItemList on matching detail/listing pages.", "effort": "small" }, { "id": "F21", "severity": "high", "principleId": "be-private-and-secure", "principleCheckId": "secure-transport-and-headers", "guidanceId": "security", "guidanceCategory": "security", "summary": "Core browser security headers are missing and analytics cookies are not Secure.", "evidence": "HTTPS is used, but the headers primitive found no CSP, HSTS, X-Content-Type-Options, Referrer-Policy, or Permissions-Policy. All eight observed cookies were flagged, including three Google Analytics cookies without Secure and with SameSite=None.", "artifacts": [ "evidence/headers.json", "evidence/cookies.json" ], "suggestedFix": "Deploy HSTS, a nonce/hash-based CSP, nosniff, strict referrer and permissions policies; mark HTTPS cookies Secure and narrow SameSite/domain/lifetime.", "effort": "medium" }, { "id": "F22", "severity": "high", "principleId": "be-private-and-secure", "principleCheckId": "data-minimisation-and-third-parties", "guidanceId": "privacy", "guidanceCategory": "privacy", "summary": "Tracking and third-party delivery dominate the page load.", "evidence": "The HAR recorded 71/79 requests and 1.318MB/1.435MB as cross-origin by host classification; tracker evidence found two known tracker origins. Four tag-manager/gtag files transferred about 578KiB before user interaction.", "artifacts": [ "evidence/home-network-summary.json", "evidence/home-network", "evidence/trackers.json" ], "suggestedFix": "Consolidate analytics, gate non-essential tracking on consent, batch events, and self-host or eliminate dependencies that do not provide direct user value.", "effort": "large" }, { "id": "F23", "severity": "medium", "principleId": "be-private-and-secure", "principleCheckId": "in-context-permissions-and-modern-auth", "guidanceId": "passkey-authentication", "guidanceCategory": "security", "summary": "The observed sign-in entry does not advertise phishing-resistant authentication.", "evidence": "No permission prompt was triggered on load, but the d Account redirect presented ID-first sign-in and the rendered/auth source probe found no WebAuthn or PublicKeyCredential signal.", "artifacts": [ "evidence/login-probe.json" ], "suggestedFix": "Offer passkey/WebAuthn authentication and conditional mediation alongside recovery-compatible fallbacks, clearly surfaced in the d Account flow.", "effort": "large" }, { "id": "F24", "severity": "medium", "principleId": "be-sustainable", "principleCheckId": "optimised-assets", "guidanceId": "optimize-image-priority", "guidanceCategory": "performance", "summary": "Image delivery leaves meaningful byte and stability savings.", "evidence": "Lighthouse estimated 316KiB image-delivery savings; the image probe found missing intrinsic dimensions on 95 images and no responsive source on the raster image it flagged.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/images.json" ], "suggestedFix": "Serve correctly sized AVIF/WebP variants with srcset/sizes and explicit dimensions, and prioritize only the LCP image.", "effort": "medium" } ], "taskList": [ { "id": "T01", "title": "Remove the load-blocking custom modal and rebuild any necessary notice with native dialog semantics", "priority": 1, "findingIds": [ "F05", "F06" ], "guidanceId": "declarative-dialog-popover-control", "status": "open" }, { "id": "T02", "title": "Fix LCP, render-blocking delivery, duplicate analytics, and unused code", "priority": 2, "findingIds": [ "F09", "F11", "F12", "F22" ], "guidanceId": "identify-heavy-scripts", "status": "open" }, { "id": "T03", "title": "Reserve image and async-content geometry to eliminate CLS", "priority": 3, "findingIds": [ "F10", "F16", "F24" ], "guidanceId": "optimize-image-priority", "status": "open" }, { "id": "T04", "title": "Add accessible names, heading structure, contrast, modal focus, and adequate target sizes", "priority": 4, "findingIds": [ "F08", "F13", "F14", "F15", "F18" ], "guidanceId": "accessibility", "status": "open" }, { "id": "T05", "title": "Deploy missing security headers and tighten cookie policy", "priority": 5, "findingIds": [ "F21" ], "guidanceId": "security", "status": "open" }, { "id": "T06", "title": "Add system preference themes and contrast adaptations", "priority": 6, "findingIds": [ "F01", "F02" ], "guidanceId": "dark-mode", "status": "open" }, { "id": "T07", "title": "Publish sitemap and structured entity metadata", "priority": 7, "findingIds": [ "F19", "F20" ], "guidanceId": "html", "status": "open" }, { "id": "T08", "title": "Modernize responsive and navigation transitions progressively", "priority": 8, "findingIds": [ "F03", "F04", "F07" ], "guidanceId": "size-aware-styling", "status": "open" }, { "id": "T09", "title": "Offer passkey authentication in the d Account journey", "priority": 9, "findingIds": [ "F23" ], "guidanceId": "passkey-authentication", "status": "open" }, { "id": "T10", "title": "Resolve BFCache, deprecation, and source-map hygiene issues", "priority": 10, "findingIds": [ "F17" ], "guidanceId": "html", "status": "open" } ], "budget": { "wallClockSeconds": 900, "pathCount": 6, "auditPasses": 1 }, "agent": "pi", "runId": "2026-07-23T05-29-30-870Z" }