{ "url": "https://www.marktplaats.nl", "auditedAt": "2026-07-22T11:50:31.195Z", "mode": "report", "status": "completed", "statusDetail": "Coverage-complete representative audit of six paths; authenticated message submission, account creation, ad placement and payment were not covered because they require credentials or consequential actions.", "page": { "appType": "hybrid", "framework": "Server-rendered multi-page site with React-enhanced surfaces", "notes": "Representative coverage: homepage, category/filter landing, listing detail, login, consent and not-found recovery. Excluded authenticated messaging/bidding completion, account creation, ad placement, checkout/payment and every category because they require credentials/consequential actions or duplicate audited templates." }, "evidenceUsed": [ "screenshot", "dom", "layout-metrics", "evaluate-probe", "trace", "har", "discoverability", "headers", "cookies", "trackers", "secrets", "images", "heap-summary", "axe-core", "lighthouse", "robots/sitemap inspection", "Modern Web Guidance" ], "guidanceConsulted": [ "accessibility", "dark-mode", "privacy", "security", "performance", "optimize-image-priority", "identify-heavy-scripts", "forms", "passkeys", "webmcp", "improve-text-layout-and-legibility", "same-document-transitions", "size-aware-styling", "declarative-dialog-popover-control", "break-up-long-tasks", "optimize-script-priority", "html", "deprioritize-background-fetches", "efficient-background-processing" ], "artifacts": [ { "type": "other", "path": "evidence/axe-home.json", "caption": "axe home", "findingIds": [ "F09", "F10" ] }, { "type": "screenshot", "path": "evidence/category-desktop.png", "caption": "category desktop", "findingIds": [ "F03" ] }, { "type": "dom", "path": "evidence/category-dom.json", "caption": "category dom", "findingIds": [ "F04" ] }, { "type": "layout", "path": "evidence/category-mobile-layout.json", "caption": "category mobile layout", "findingIds": [] }, { "type": "other", "path": "evidence/category-probe.json", "caption": "category probe", "findingIds": [ "F21" ] }, { "type": "dom", "path": "evidence/consent-dom.json", "caption": "consent dom", "findingIds": [ "F11" ] }, { "type": "screenshot", "path": "evidence/consent.png", "caption": "consent", "findingIds": [] }, { "type": "other", "path": "evidence/cookies.json", "caption": "cookies", "findingIds": [ "F14", "F17" ] }, { "type": "screenshot", "path": "evidence/detail-desktop.png", "caption": "detail desktop", "findingIds": [ "F03" ] }, { "type": "dom", "path": "evidence/detail-dom.json", "caption": "detail dom", "findingIds": [ "F04" ] }, { "type": "screenshot", "path": "evidence/detail-mobile.png", "caption": "detail mobile", "findingIds": [] }, { "type": "other", "path": "evidence/detail-probe.json", "caption": "detail probe", "findingIds": [ "F21" ] }, { "type": "other", "path": "evidence/guidance-search.json", "caption": "guidance search", "findingIds": [] }, { "type": "other", "path": "evidence/headers.json", "caption": "headers", "findingIds": [ "F14", "F17" ] }, { "type": "heap", "path": "evidence/heap-after-repeat.json", "caption": "heap after repeat", "findingIds": [] }, { "type": "heap", "path": "evidence/heap-after-scroll.json", "caption": "heap after scroll", "findingIds": [] }, { "type": "heap", "path": "evidence/heap-baseline.json", "caption": "heap baseline", "findingIds": [] }, { "type": "screenshot", "path": "evidence/home-dark.png", "caption": "home dark", "findingIds": [ "F01" ] }, { "type": "screenshot", "path": "evidence/home-desktop.png", "caption": "home desktop", "findingIds": [] }, { "type": "screenshot", "path": "evidence/home-discoverability-crawler.png", "caption": "home discoverability crawler", "findingIds": [] }, { "type": "screenshot", "path": "evidence/home-discoverability-rendered.png", "caption": "home discoverability rendered", "findingIds": [] }, { "type": "discoverability", "path": "evidence/home-discoverability.json", "caption": "home discoverability", "findingIds": [] }, { "type": "dom", "path": "evidence/home-dom.json", "caption": "home dom", "findingIds": [] }, { "type": "layout", "path": "evidence/home-mobile-layout.json", "caption": "home mobile layout", "findingIds": [ "F06", "F12" ] }, { "type": "screenshot", "path": "evidence/home-mobile.png", "caption": "home mobile", "findingIds": [] }, { "type": "other", "path": "evidence/home-recon.json", "caption": "home recon", "findingIds": [ "F10", "F11" ] }, { "type": "other", "path": "evidence/home-summary.json", "caption": "home summary", "findingIds": [ "F07", "F08", "F15", "F19", "F20" ] }, { "type": "trace-summary", "path": "evidence/home-trace-summary.json", "caption": "home trace summary", "findingIds": [ "F05", "F06" ] }, { "type": "trace", "path": "evidence/home-trace.json", "caption": "home trace", "findingIds": [] }, { "type": "har", "path": "evidence/home.har", "caption": "home", "findingIds": [ "F07", "F15", "F19" ] }, { "type": "other", "path": "evidence/images.json", "caption": "images", "findingIds": [ "F12", "F18" ] }, { "type": "lighthouse", "path": "evidence/lighthouse.json", "caption": "lighthouse", "findingIds": [ "F05", "F06", "F07", "F08", "F09", "F11", "F12", "F13", "F16", "F20" ] }, { "type": "other", "path": "evidence/login-probe.json", "caption": "login probe", "findingIds": [ "F16" ] }, { "type": "screenshot", "path": "evidence/login.png", "caption": "login", "findingIds": [ "F16" ] }, { "type": "other", "path": "evidence/not-found-probe.json", "caption": "not found probe", "findingIds": [] }, { "type": "other", "path": "evidence/platform-probe.json", "caption": "platform probe", "findingIds": [ "F02", "F03", "F04", "F10", "F21" ] }, { "type": "other", "path": "evidence/preferences-probe.json", "caption": "preferences probe", "findingIds": [ "F01", "F02" ] }, { "type": "other", "path": "evidence/robots.json", "caption": "robots", "findingIds": [] }, { "type": "other", "path": "evidence/secrets.json", "caption": "secrets", "findingIds": [] }, { "type": "other", "path": "evidence/sitemap.json", "caption": "sitemap", "findingIds": [] }, { "type": "other", "path": "evidence/trackers.json", "caption": "trackers", "findingIds": [ "F15" ] } ], "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 evidence review using evidence/home-dark.png, evidence/preferences-probe.json", "evidence": "The dark-mode screenshot remains a white/light interface; the probe reports colorScheme \"light\" while (prefers-color-scheme: dark) matches.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dark.png", "evidence/preferences-probe.json" ], "findingIds": [ "F01" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-reduced-motion", "status": "issues", "confidence": "high", "method": "Direct evidence review using evidence/preferences-probe.json, evidence/platform-probe.json", "evidence": "Under prefers-reduced-motion: reduce, the probe found 40 running Skeleton-shineLines animations, each 1500 ms, and found no reduced-motion CSS.", "pathIds": [ "home" ], "artifacts": [ "evidence/preferences-probe.json", "evidence/platform-probe.json" ], "findingIds": [ "F02" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-contrast", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "axe and Lighthouse report no color-contrast failures; visible focus and essential controls remain distinguishable in the audited screenshots.", "pathIds": [ "home" ] }, { "principleId": "implement-natural-interactions", "checkId": "view-transitions", "status": "issues", "confidence": "high", "method": "Direct evidence review using evidence/platform-probe.json, evidence/category-desktop.png, evidence/detail-desktop.png", "evidence": "The platform probe found no authored view-transition usage, while the audited homepage, category and detail surfaces make abrupt document/state changes.", "pathIds": [ "home" ], "artifacts": [ "evidence/platform-probe.json", "evidence/category-desktop.png", "evidence/detail-desktop.png" ], "findingIds": [ "F03" ] }, { "principleId": "implement-natural-interactions", "checkId": "scroll-driven-animations", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "No authored scroll-linked animation was found and the mobile layout probe observed only two short load tasks, so there is no JS scroll-animation anti-pattern on the tested page.", "pathIds": [ "home" ] }, { "principleId": "implement-natural-interactions", "checkId": "physical-gestures", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "Mobile scrolling and the listing carousel use native scroll/touch behavior; no custom pointer-driven gesture trap was observed.", "pathIds": [ "home" ] }, { "principleId": "provide-guided-navigation", "checkId": "scroll-state-aware-chrome", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "Mobile screenshots show compact persistent action chrome appropriate to the route, while content remains orientable during scrolling.", "pathIds": [ "home" ] }, { "principleId": "provide-guided-navigation", "checkId": "anchored-positioning", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "The audited filter surface uses native selects and no drifting custom tooltip/menu was observed at desktop or 360 px.", "pathIds": [ "home" ] }, { "principleId": "provide-guided-navigation", "checkId": "directs-attention", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "Breadcrumbs, active tabs, selected filters and persistent listing actions visibly preserve location and next action across category/detail pages.", "pathIds": [ "home" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "no-intrusive-interruptions", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "Desktop and mobile load screenshots show content directly with no full-screen popup or interstitial.", "pathIds": [ "home" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "semantic-dismissible-primitives", "status": "issues", "confidence": "high", "method": "Direct evidence review using evidence/lighthouse.json, evidence/home-recon.json, evidence/consent-dom.json", "evidence": "Lighthouse fails aria-dialog-name; the home recon found no native dialog or popover primitives despite dialog-like consent/overlay code.", "pathIds": [ "category" ], "artifacts": [ "evidence/lighthouse.json", "evidence/home-recon.json", "evidence/consent-dom.json" ], "findingIds": [ "F11" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "reduced-chrome", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "Screenshots show restrained framing and content-led category/detail layouts; mobile detail devotes the viewport to the listing and actions.", "pathIds": [ "home" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "responsive-no-horizontal-scroll", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "At 360x800 the layout primitive measured scrollWidth=clientWidth=360 and horizontalOverflowPx=0; viewport meta is present.", "pathIds": [ "home" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "component-level-responsiveness", "status": "issues", "confidence": "high", "method": "Direct evidence review using evidence/platform-probe.json, evidence/detail-dom.json, evidence/category-dom.json", "evidence": "The CSS probe found no @container rules; DOM CSS excerpts show repeated @media(min-width:768px) rules across reusable listing/detail components.", "pathIds": [ "category" ], "artifacts": [ "evidence/platform-probe.json", "evidence/detail-dom.json", "evidence/category-dom.json" ], "findingIds": [ "F04" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "input-modality-aware", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "The focused homepage link has a visible 1 px auto outline; Lighthouse viewport checks pass and mobile controls are visibly touch-sized.", "pathIds": [ "home" ] }, { "principleId": "support-core-task-success", "checkId": "clear-purpose-and-primary-action", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "Homepage search, category filters, and detail Message/Bid actions are prominent and clearly labelled in screenshots.", "pathIds": [ "home", "category", "detail" ] }, { "principleId": "support-core-task-success", "checkId": "primary-flow-completion", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "The representative browse path home to category to listing exposes clear filter, contact and bid actions; authentication is introduced only for account-dependent actions.", "pathIds": [ "home", "category", "detail" ] }, { "principleId": "support-core-task-success", "checkId": "clear-system-state-and-recovery", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "The deliberately invalid route shows a clear Dutch not-found message and useful category/navigation recovery links.", "pathIds": [ "home" ] }, { "principleId": "be-fast-and-stable", "checkId": "good-core-web-vitals", "status": "issues", "confidence": "high", "method": "Direct evidence review using evidence/lighthouse.json, evidence/home-trace-summary.json", "evidence": "Lighthouse measured LCP 15.3 s, FCP 3.8 s, TBT 500 ms and performance 0.47. A separate trace measured LCP 2.93 s, showing substantial run variability but not invalidating the slow cold-load result.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse.json", "evidence/home-trace-summary.json" ], "findingIds": [ "F05" ] }, { "principleId": "be-fast-and-stable", "checkId": "visual-stability", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "The layout observer measured CLS 0 with no shifts, and Lighthouse also reports CLS 0.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-mobile-layout.json", "evidence/lighthouse.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-main-thread", "status": "issues", "confidence": "high", "method": "Direct evidence review using evidence/lighthouse.json, evidence/home-trace-summary.json, evidence/home-mobile-layout.json", "evidence": "Lighthouse measured 3.1 s main-thread work, 1.8 s JavaScript execution and 500 ms TBT; the trace still recorded a >50 ms long task.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse.json", "evidence/home-trace-summary.json", "evidence/home-mobile-layout.json" ], "findingIds": [ "F06" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-resource-delivery", "status": "issues", "confidence": "high", "method": "Direct evidence review using evidence/home-summary.json, evidence/home.har, evidence/lighthouse.json", "evidence": "The HAR summary identifies four VeryHigh parser-inserted stylesheets and several parser-inserted scripts; Lighthouse estimates 1,480 ms render-blocking savings.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json", "evidence/home.har", "evidence/lighthouse.json" ], "findingIds": [ "F07" ] }, { "principleId": "be-fast-and-stable", "checkId": "trim-unused-and-duplicate-code", "status": "issues", "confidence": "high", "method": "Direct evidence review using evidence/lighthouse.json, evidence/home-summary.json", "evidence": "Lighthouse estimates 801 KiB unused JavaScript plus 39 KiB legacy JavaScript; HAR records 28 scripts transferring 1.97 MB.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse.json", "evidence/home-summary.json" ], "findingIds": [ "F08" ] }, { "principleId": "be-inclusive", "checkId": "names-roles-labels", "status": "issues", "confidence": "high", "method": "Direct evidence review using evidence/axe-home.json, evidence/lighthouse.json", "evidence": "axe reports a critical unnamed profile/hamburger button. Lighthouse also fails button-name, aria-dialog-name and label-content-name-mismatch.", "pathIds": [ "home" ], "artifacts": [ "evidence/axe-home.json", "evidence/lighthouse.json" ], "findingIds": [ "F09" ] }, { "principleId": "be-inclusive", "checkId": "sufficient-contrast", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "axe and Lighthouse color-contrast checks pass on the homepage.", "pathIds": [ "home" ] }, { "principleId": "be-inclusive", "checkId": "structure-and-focus", "status": "issues", "confidence": "high", "method": "Direct evidence review using evidence/axe-home.json, evidence/home-recon.json, evidence/platform-probe.json", "evidence": "axe reports no main landmark, content outside landmarks and a skipped heading level; recon also found an empty h1. Focus itself remained visibly outlined.", "pathIds": [ "home" ], "artifacts": [ "evidence/axe-home.json", "evidence/home-recon.json", "evidence/platform-probe.json" ], "findingIds": [ "F10" ] }, { "principleId": "be-inclusive", "checkId": "legible-text", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "Desktop and 360 px screenshots show readable text sizing, line wrapping and hierarchy without clipping.", "pathIds": [ "home" ] }, { "principleId": "be-inclusive", "checkId": "zoom-reflow-targets-and-media", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "Viewport scaling is not disabled, 360 px reflow has no overflow, and no audio/video requiring captions exists on the audited pages.", "pathIds": [ "home" ] }, { "principleId": "follow-best-practices", "checkId": "no-console-errors", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "Lighthouse errors-in-console audit passes with no recorded console errors.", "pathIds": [ "home" ] }, { "principleId": "follow-best-practices", "checkId": "sound-document-and-assets", "status": "issues", "confidence": "high", "method": "Direct evidence review using evidence/images.json, evidence/lighthouse.json, evidence/home-mobile-layout.json", "evidence": "The image audit found all 45 img elements without width/height attributes; Lighthouse also fails unsized-images, although observed CLS in this capture was 0.", "pathIds": [ "home" ], "artifacts": [ "evidence/images.json", "evidence/lighthouse.json", "evidence/home-mobile-layout.json" ], "findingIds": [ "F12" ] }, { "principleId": "follow-best-practices", "checkId": "browser-platform-hygiene", "status": "issues", "confidence": "high", "method": "Direct evidence review using evidence/lighthouse.json", "evidence": "Lighthouse reports three BFCache failure reasons and missing source maps for large first-party JavaScript.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse.json" ], "findingIds": [ "F13" ] }, { "principleId": "be-discoverable", "checkId": "title-and-description", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "Homepage, category and listing probes each show descriptive, route-specific titles and meta descriptions.", "pathIds": [ "home", "category", "detail" ] }, { "principleId": "be-discoverable", "checkId": "crawlable-and-mobile-friendly", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "Lighthouse SEO scores 1.0; viewport, robots and crawlable-link audits pass, and recon found real href links.", "pathIds": [ "home" ] }, { "principleId": "be-discoverable", "checkId": "canonical-and-indexing-signals", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "Homepage/category/detail expose matching canonicals; raw homepage returns 200; robots advertises https://www.marktplaats.nl/sitemap/sitemap.xml.", "pathIds": [ "home" ] }, { "principleId": "be-discoverable", "checkId": "structured-and-shareable-metadata", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "Homepage has Organization/site metadata; category has breadcrumb JSON-LD and eight OG tags; detail has Product/Offer JSON-LD and eight OG tags matching visible content.", "pathIds": [ "home", "category", "detail" ] }, { "principleId": "be-private-and-secure", "checkId": "secure-transport-and-headers", "status": "issues", "confidence": "high", "method": "Direct evidence review using evidence/headers.json, evidence/cookies.json", "evidence": "HTTPS, HSTS, nosniff and SAMEORIGIN are present, but CSP is missing. Cookie audit found 11 of 12 cookies without Secure, including MpSession, and widespread SameSite=None.", "pathIds": [ "home" ], "artifacts": [ "evidence/headers.json", "evidence/cookies.json" ], "findingIds": [ "F14" ] }, { "principleId": "be-private-and-secure", "checkId": "data-minimisation-and-third-parties", "status": "issues", "confidence": "high", "method": "Direct evidence review using evidence/trackers.json, evidence/home-summary.json, evidence/home.har", "evidence": "Tracker capture found 12 third-party origins and PubMatic, DoubleClick and Google ad trackers. HAR attributes 74/77 requests and 2.49 MB/2.53 MB to origins classified as third party.", "pathIds": [ "home" ], "artifacts": [ "evidence/trackers.json", "evidence/home-summary.json", "evidence/home.har" ], "findingIds": [ "F15" ] }, { "principleId": "be-private-and-secure", "checkId": "in-context-permissions-and-modern-auth", "status": "issues", "confidence": "high", "method": "Direct evidence review using evidence/login.png, evidence/login-probe.json, evidence/lighthouse.json", "evidence": "The login screenshot offers Google or email/password; the runtime probe found no navigator.credentials integration in the observed surface. No permission prompt fired on load.", "pathIds": [ "login" ], "artifacts": [ "evidence/login.png", "evidence/login-probe.json", "evidence/lighthouse.json" ], "findingIds": [ "F16" ] }, { "principleId": "be-private-and-secure", "checkId": "defensive-browser-policies", "status": "issues", "confidence": "high", "method": "Direct evidence review using evidence/headers.json, evidence/cookies.json", "evidence": "Headers include HSTS and X-Frame-Options, but no CSP, Referrer-Policy or Permissions-Policy; long-lived SameSite=None analytics cookies are present.", "pathIds": [ "home" ], "artifacts": [ "evidence/headers.json", "evidence/cookies.json" ], "findingIds": [ "F17" ] }, { "principleId": "be-resilient", "checkId": "progressive-enhancement", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "Discoverability capture reports raw HTML 200, isJsShell=false and 76% rendered-word coverage, with title and description present without JS.", "pathIds": [ "home" ] }, { "principleId": "be-resilient", "checkId": "resilient-runtime-behaviour", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "Native selects and responsive listing controls remained usable at desktop and 360 px; no clipped overlay or broken asynchronous shell was observed.", "pathIds": [ "home" ] }, { "principleId": "be-resilient", "checkId": "offline-and-installable", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from representative page and product intent", "evidence": "The public marketplace is intrinsically network-backed; installability/offline transaction support was not established as product intent.", "reason": "The public marketplace is intrinsically network-backed; installability/offline transaction support was not established as product intent.", "pathIds": [ "home" ] }, { "principleId": "be-resilient", "checkId": "network-and-http-failure-states", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "A deliberately invalid route renders a useful not-found message and navigation/category recovery rather than a blank shell.", "pathIds": [ "home" ] }, { "principleId": "be-internationalised", "checkId": "lang-dir-and-logical-properties", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "The document declares lang=nl and the Dutch content/order is correct for the left-to-right locale.", "pathIds": [ "home" ] }, { "principleId": "be-internationalised", "checkId": "locale-aware-data", "status": "pass", "confidence": "medium", "method": "Cross-path visual and objective evidence review", "evidence": "Representative prices render with euro signs, decimal commas and Dutch formatting (for example € 25,00 and € 50.700,00).", "pathIds": [ "home" ] }, { "principleId": "be-internationalised", "checkId": "time-zone-correctness", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from representative page and product intent", "evidence": "The representative public pages contain no scheduled events or user-facing time-zone-sensitive data.", "reason": "The representative public pages contain no scheduled events or user-facing time-zone-sensitive data.", "pathIds": [ "home" ] }, { "principleId": "be-trustworthy", "checkId": "no-dark-patterns", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "Audited listing pricing/actions and login alternatives are explicit; no confirmshaming, forced continuity or disguised primary control was observed.", "pathIds": [ "home" ] }, { "principleId": "be-trustworthy", "checkId": "humane-error-handling", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "The login surface has persistent visible labels and clear account alternatives; no premature invalid state is shown before interaction.", "pathIds": [ "home" ] }, { "principleId": "be-trustworthy", "checkId": "trustworthy-input-assistance", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "Search/postcode and login fields have visible labels; browser password/email controls are conventional and do not block paste according to Lighthouse.", "pathIds": [ "home" ] }, { "principleId": "be-trustworthy", "checkId": "safe-commercial-and-account-flows", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "The detail page shows price, pickup state, seller identity/reputation and separate Message/Bid actions before commitment; login clearly distinguishes sign-in and account creation.", "pathIds": [ "home" ] }, { "principleId": "be-sustainable", "checkId": "optimised-assets", "status": "issues", "confidence": "high", "method": "Direct evidence review using evidence/images.json", "evidence": "The image audit found 43 of 45 images without srcset and all 45 without explicit dimensions; one logo was over 2x displayed width.", "pathIds": [ "home" ], "artifacts": [ "evidence/images.json" ], "findingIds": [ "F18" ] }, { "principleId": "be-sustainable", "checkId": "no-wasteful-work", "status": "issues", "confidence": "high", "method": "Direct evidence review using evidence/home-summary.json, evidence/home.har", "evidence": "HAR shows 1.97 MB of script, including ~296 KB PubMatic, multiple 140–202 KB tag-manager bundles and ~201 KB ad code on initial load.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json", "evidence/home.har" ], "findingIds": [ "F19" ] }, { "principleId": "be-sustainable", "checkId": "third-party-and-media-budget", "status": "issues", "confidence": "high", "method": "Direct evidence review using evidence/home-summary.json, evidence/lighthouse.json", "evidence": "Third-party-classified origins account for 2.49 MB of 2.53 MB transferred and 74 of 77 requests; Lighthouse total payload is 3,084 KiB in its run.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json", "evidence/lighthouse.json" ], "findingIds": [ "F20" ] }, { "principleId": "be-agent-ready", "checkId": "structured-agent-capabilities", "status": "issues", "confidence": "high", "method": "Direct evidence review using evidence/platform-probe.json, evidence/category-probe.json, evidence/detail-probe.json", "evidence": "The platform probe found no WebMCP/modelContext surface; agents must infer search, filter and listing-contact behavior from the visual DOM.", "pathIds": [ "home" ], "artifacts": [ "evidence/platform-probe.json", "evidence/category-probe.json", "evidence/detail-probe.json" ], "findingIds": [ "F21" ] }, { "principleId": "be-agent-ready", "checkId": "on-device-inference", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from representative page and product intent", "evidence": "No summarisation or generative task on the audited purchase/discovery surfaces clearly benefits from built-in on-device inference.", "reason": "No summarisation or generative task on the audited purchase/discovery surfaces clearly benefits from built-in on-device inference.", "pathIds": [ "home" ] }, { "principleId": "be-memory-efficient", "checkId": "no-leak-under-repeated-interaction", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "Baseline heap was 36,367,828 bytes/690,525 nodes; after ten repeated top-to-bottom scroll cycles it was 36,152,707 bytes/689,064 nodes, showing no retained growth in this interaction.", "pathIds": [ "home" ] }, { "principleId": "be-memory-efficient", "checkId": "bounded-footprint", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "Heap summary is about 36.4 MB for the media/listing-rich homepage and remains stable after repeated interaction.", "pathIds": [ "home" ] }, { "principleId": "be-memory-efficient", "checkId": "no-detached-dom-or-unbounded-listeners", "status": "pass", "confidence": "high", "method": "Cross-path visual and objective evidence review", "evidence": "Before/after heap totals decrease rather than grow; summary inspection found no Detached* constructor among retained top constructors.", "pathIds": [ "home" ] } ], "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": "pass" }, { "principleId": "maximize-content-reduce-noise", "expectation": "default", "status": "issues", "findingIds": [ "F11" ] }, { "principleId": "adapt-to-the-form-factor", "expectation": "default", "status": "issues", "findingIds": [ "F04" ] }, { "principleId": "support-core-task-success", "expectation": "default", "status": "pass" }, { "principleId": "be-fast-and-stable", "expectation": "default", "status": "issues", "findingIds": [ "F05", "F06", "F07", "F08" ] }, { "principleId": "be-inclusive", "expectation": "default", "status": "issues", "findingIds": [ "F09", "F10" ] }, { "principleId": "follow-best-practices", "expectation": "default", "status": "issues", "findingIds": [ "F12", "F13" ] }, { "principleId": "be-discoverable", "expectation": "default", "status": "pass" }, { "principleId": "be-private-and-secure", "expectation": "default", "status": "issues", "findingIds": [ "F14", "F15", "F16", "F17" ] }, { "principleId": "be-resilient", "expectation": "contextual", "status": "pass" }, { "principleId": "be-internationalised", "expectation": "contextual", "status": "pass" }, { "principleId": "be-trustworthy", "expectation": "default", "status": "pass" }, { "principleId": "be-sustainable", "expectation": "contextual", "status": "issues", "findingIds": [ "F18", "F19", "F20" ] }, { "principleId": "be-agent-ready", "expectation": "contextual", "status": "issues", "findingIds": [ "F21" ] }, { "principleId": "be-memory-efficient", "expectation": "default", "status": "pass" } ], "paths": [ { "id": "home", "description": "Homepage and search entry point; represents global navigation, discovery feed, search controls, preferences, mobile layout, performance, privacy and no-JS behavior.", "url": "https://www.marktplaats.nl/", "conditions": [ "desktop", "viewport: 360x800", "prefers-color-scheme: dark", "prefers-reduced-motion: reduce", "keyboard focus", "JavaScript disabled" ], "result": "issues" }, { "id": "category", "description": "Cars category landing and filter form; represents category/index pages and faceted product discovery.", "url": "https://www.marktplaats.nl/cp/91/auto-kopen/", "conditions": [ "desktop", "viewport: 360x800" ], "result": "pass" }, { "id": "detail", "description": "Representative listing detail; covers product metadata, seller context, responsive media and contact/bid actions.", "url": "https://www.marktplaats.nl/v/kinderen-en-baby-s/speelgoed-babyspeelgoed/m2422796215-vtech-babywalker-zo-goed-als-nieuw", "conditions": [ "desktop", "viewport: 360x800" ], "result": "issues" }, { "id": "login", "description": "Authentication entry; represents account access and input assistance. Credential submission was intentionally not attempted.", "url": "https://www.marktplaats.nl/identity/v2/login", "conditions": [ "desktop", "logged out" ], "result": "issues" }, { "id": "consent", "description": "Privacy-preferences route; represents consent and user control.", "url": "https://www.marktplaats.nl/consent", "conditions": [ "desktop", "existing default cookie state" ], "result": "issues" }, { "id": "not-found", "description": "Deliberately invalid route; represents HTTP/navigation recovery and useful error state.", "url": "https://www.marktplaats.nl/this-route-should-not-exist-web-uplift", "conditions": [ "desktop" ], "result": "pass" } ], "findings": [ { "id": "F01", "severity": "medium", "principleId": "respect-user-preferences", "principleCheckId": "respects-color-scheme", "guidanceId": "dark-mode", "guidanceCategory": "user-experience", "confidence": "high", "summary": "The site ignores the user’s dark color-scheme preference.", "evidence": "The dark-mode screenshot remains a white/light interface; the probe reports colorScheme \"light\" while (prefers-color-scheme: dark) matches.", "artifacts": [ "evidence/home-dark.png", "evidence/preferences-probe.json" ], "suggestedFix": "Declare color-scheme and provide preference-driven dark surface/text tokens with prefers-color-scheme or light-dark().", "effort": "medium", "pathId": "home", "url": "https://www.marktplaats.nl/" }, { "id": "F02", "severity": "medium", "principleId": "respect-user-preferences", "principleCheckId": "respects-reduced-motion", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "confidence": "high", "summary": "Loading skeleton motion continues when reduced motion is requested.", "evidence": "Under prefers-reduced-motion: reduce, the probe found 40 running Skeleton-shineLines animations, each 1500 ms, and found no reduced-motion CSS.", "artifacts": [ "evidence/preferences-probe.json", "evidence/platform-probe.json" ], "suggestedFix": "Disable non-essential shimmer/transition animation inside prefers-reduced-motion: reduce.", "effort": "small", "pathId": "home", "url": "https://www.marktplaats.nl/" }, { "id": "F03", "severity": "low", "principleId": "implement-natural-interactions", "principleCheckId": "view-transitions", "guidanceId": "same-document-transitions", "guidanceCategory": "user-experience", "confidence": "high", "summary": "Route and state changes do not use View Transitions.", "evidence": "The platform probe found no authored view-transition usage, while the audited homepage, category and detail surfaces make abrupt document/state changes.", "artifacts": [ "evidence/platform-probe.json", "evidence/category-desktop.png", "evidence/detail-desktop.png" ], "suggestedFix": "Add progressive View Transitions for listing/category navigation and major same-document state changes, retaining a no-motion fallback.", "effort": "medium", "pathId": "home", "url": "https://www.marktplaats.nl/" }, { "id": "F04", "severity": "low", "principleId": "adapt-to-the-form-factor", "principleCheckId": "component-level-responsiveness", "guidanceId": "size-aware-styling", "guidanceCategory": "css", "confidence": "high", "summary": "Responsive behavior relies on viewport rules rather than container-aware components.", "evidence": "The CSS probe found no @container rules; DOM CSS excerpts show repeated @media(min-width:768px) rules across reusable listing/detail components.", "artifacts": [ "evidence/platform-probe.json", "evidence/detail-dom.json", "evidence/category-dom.json" ], "suggestedFix": "Give reusable cards, carousels and filter groups containment and adapt them with container queries.", "effort": "medium", "pathId": "category", "url": "https://www.marktplaats.nl/" }, { "id": "F05", "severity": "high", "principleId": "be-fast-and-stable", "principleCheckId": "good-core-web-vitals", "guidanceId": "performance", "guidanceCategory": "performance", "confidence": "high", "summary": "Cold mobile performance misses the good LCP and responsiveness bar.", "evidence": "Lighthouse measured LCP 15.3 s, FCP 3.8 s, TBT 500 ms and performance 0.47. A separate trace measured LCP 2.93 s, showing substantial run variability but not invalidating the slow cold-load result.", "artifacts": [ "evidence/lighthouse.json", "evidence/home-trace-summary.json" ], "suggestedFix": "Prioritize the LCP resource, reduce blocking script work and validate mobile field/lab LCP and INP after each change.", "effort": "large", "pathId": "home", "url": "https://www.marktplaats.nl/" }, { "id": "F06", "severity": "high", "principleId": "be-fast-and-stable", "principleCheckId": "efficient-main-thread", "guidanceId": "break-up-long-tasks", "guidanceCategory": "performance", "confidence": "high", "summary": "JavaScript creates avoidable main-thread work on cold load.", "evidence": "Lighthouse measured 3.1 s main-thread work, 1.8 s JavaScript execution and 500 ms TBT; the trace still recorded a >50 ms long task.", "artifacts": [ "evidence/lighthouse.json", "evidence/home-trace-summary.json", "evidence/home-mobile-layout.json" ], "suggestedFix": "Profile the largest tasks, split work, schedule non-critical tasks later and avoid loading ad/analytics code before it is needed.", "effort": "large", "pathId": "home", "url": "https://www.marktplaats.nl/" }, { "id": "F07", "severity": "high", "principleId": "be-fast-and-stable", "principleCheckId": "efficient-resource-delivery", "guidanceId": "optimize-script-priority", "guidanceCategory": "performance", "confidence": "high", "summary": "The critical path is delayed by render-blocking resources and a deep script dependency chain.", "evidence": "The HAR summary identifies four VeryHigh parser-inserted stylesheets and several parser-inserted scripts; Lighthouse estimates 1,480 ms render-blocking savings.", "artifacts": [ "evidence/home-summary.json", "evidence/home.har", "evidence/lighthouse.json" ], "suggestedFix": "Inline only critical styles, defer non-critical CSS/scripts, and set explicit priority for the actual LCP resource.", "effort": "large", "pathId": "home", "url": "https://www.marktplaats.nl/" }, { "id": "F08", "severity": "medium", "principleId": "be-fast-and-stable", "principleCheckId": "trim-unused-and-duplicate-code", "guidanceId": "identify-heavy-scripts", "guidanceCategory": "performance", "confidence": "high", "summary": "The page ships a large amount of unused and legacy JavaScript.", "evidence": "Lighthouse estimates 801 KiB unused JavaScript plus 39 KiB legacy JavaScript; HAR records 28 scripts transferring 1.97 MB.", "artifacts": [ "evidence/lighthouse.json", "evidence/home-summary.json" ], "suggestedFix": "Code-split by user intent and remove duplicate/legacy/unused bundles, especially analytics and advertising code from initial load.", "effort": "large", "pathId": "home", "url": "https://www.marktplaats.nl/" }, { "id": "F09", "severity": "high", "principleId": "be-inclusive", "principleCheckId": "names-roles-labels", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "confidence": "high", "summary": "Some important controls lack accessible names or have mismatched names.", "evidence": "axe reports a critical unnamed profile/hamburger button. Lighthouse also fails button-name, aria-dialog-name and label-content-name-mismatch.", "artifacts": [ "evidence/axe-home.json", "evidence/lighthouse.json" ], "suggestedFix": "Use native semantics and stable visible/accessible names for every icon button and dialog; ensure aria-label matches visible control text.", "effort": "small", "pathId": "home", "url": "https://www.marktplaats.nl/" }, { "id": "F10", "severity": "medium", "principleId": "be-inclusive", "principleCheckId": "structure-and-focus", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "confidence": "high", "summary": "The homepage heading and landmark structure is incomplete.", "evidence": "axe reports no main landmark, content outside landmarks and a skipped heading level; recon also found an empty h1. Focus itself remained visibly outlined.", "artifacts": [ "evidence/axe-home.json", "evidence/home-recon.json", "evidence/platform-probe.json" ], "suggestedFix": "Wrap primary content in main, provide a meaningful h1, and keep heading levels sequential.", "effort": "small", "pathId": "home", "url": "https://www.marktplaats.nl/" }, { "id": "F11", "severity": "medium", "principleId": "maximize-content-reduce-noise", "principleCheckId": "semantic-dismissible-primitives", "guidanceId": "declarative-dialog-popover-control", "guidanceCategory": "user-experience", "confidence": "high", "summary": "At least one dialog-like surface is not exposed as a well-named semantic dialog.", "evidence": "Lighthouse fails aria-dialog-name; the home recon found no native dialog or popover primitives despite dialog-like consent/overlay code.", "artifacts": [ "evidence/lighthouse.json", "evidence/home-recon.json", "evidence/consent-dom.json" ], "suggestedFix": "Use dialog/popover with a programmatic name and declarative dismiss behavior for modal and transient surfaces.", "effort": "medium", "pathId": "category", "url": "https://www.marktplaats.nl/" }, { "id": "F12", "severity": "medium", "principleId": "follow-best-practices", "principleCheckId": "sound-document-and-assets", "guidanceId": "html", "guidanceCategory": "html", "confidence": "high", "summary": "Images are not explicitly sized in markup.", "evidence": "The image audit found all 45 img elements without width/height attributes; Lighthouse also fails unsized-images, although observed CLS in this capture was 0.", "artifacts": [ "evidence/images.json", "evidence/lighthouse.json", "evidence/home-mobile-layout.json" ], "suggestedFix": "Emit width and height or a stable aspect-ratio for every image so space is reserved before loading.", "effort": "small", "pathId": "home", "url": "https://www.marktplaats.nl/" }, { "id": "F13", "severity": "medium", "principleId": "follow-best-practices", "principleCheckId": "browser-platform-hygiene", "guidanceId": "html", "guidanceCategory": "html", "confidence": "high", "summary": "The page blocks back/forward cache and lacks source maps for large first-party scripts.", "evidence": "Lighthouse reports three BFCache failure reasons and missing source maps for large first-party JavaScript.", "artifacts": [ "evidence/lighthouse.json" ], "suggestedFix": "Remove avoidable no-store responses/state changes from the navigation path and publish production source maps securely for debugging.", "effort": "medium", "pathId": "home", "url": "https://www.marktplaats.nl/" }, { "id": "F14", "severity": "high", "principleId": "be-private-and-secure", "principleCheckId": "secure-transport-and-headers", "guidanceId": "security", "guidanceCategory": "privacy", "confidence": "high", "summary": "Security headers and cookie flags are weaker than expected.", "evidence": "HTTPS, HSTS, nosniff and SAMEORIGIN are present, but CSP is missing. Cookie audit found 11 of 12 cookies without Secure, including MpSession, and widespread SameSite=None.", "artifacts": [ "evidence/headers.json", "evidence/cookies.json" ], "suggestedFix": "Add a restrictive CSP and mark all HTTPS cookies Secure; use Lax/Strict unless cross-site behavior is required and documented.", "effort": "medium", "pathId": "home", "url": "https://www.marktplaats.nl/" }, { "id": "F15", "severity": "high", "principleId": "be-private-and-secure", "principleCheckId": "data-minimisation-and-third-parties", "guidanceId": "privacy", "guidanceCategory": "privacy", "confidence": "high", "summary": "The initial page has a very large tracking and third-party footprint.", "evidence": "Tracker capture found 12 third-party origins and PubMatic, DoubleClick and Google ad trackers. HAR attributes 74/77 requests and 2.49 MB/2.53 MB to origins classified as third party.", "artifacts": [ "evidence/trackers.json", "evidence/home-summary.json", "evidence/home.har" ], "suggestedFix": "Gate non-essential advertising/analytics behind consent and user intent, reduce vendors, batch measurement, and enforce a third-party byte/request budget.", "effort": "large", "pathId": "home", "url": "https://www.marktplaats.nl/" }, { "id": "F16", "severity": "medium", "principleId": "be-private-and-secure", "principleCheckId": "in-context-permissions-and-modern-auth", "guidanceId": "passkeys", "guidanceCategory": "privacy", "confidence": "high", "summary": "The observed sign-in flow is password-led and exposes no passkey path.", "evidence": "The login screenshot offers Google or email/password; the runtime probe found no navigator.credentials integration in the observed surface. No permission prompt fired on load.", "artifacts": [ "evidence/login.png", "evidence/login-probe.json", "evidence/lighthouse.json" ], "suggestedFix": "Offer passkey/WebAuthn authentication and keep password fallback; request any permissions only after a user action.", "effort": "large", "pathId": "login", "url": "https://www.marktplaats.nl/identity/v2/login" }, { "id": "F17", "severity": "medium", "principleId": "be-private-and-secure", "principleCheckId": "defensive-browser-policies", "guidanceId": "security", "guidanceCategory": "privacy", "confidence": "high", "summary": "Defensive browser policies are incomplete.", "evidence": "Headers include HSTS and X-Frame-Options, but no CSP, Referrer-Policy or Permissions-Policy; long-lived SameSite=None analytics cookies are present.", "artifacts": [ "evidence/headers.json", "evidence/cookies.json" ], "suggestedFix": "Deploy CSP/frame-ancestors, a strict Referrer-Policy and a least-privilege Permissions-Policy; tighten cross-site cookie posture.", "effort": "medium", "pathId": "home", "url": "https://www.marktplaats.nl/" }, { "id": "F18", "severity": "medium", "principleId": "be-sustainable", "principleCheckId": "optimised-assets", "guidanceId": "optimize-image-priority", "guidanceCategory": "performance", "confidence": "high", "summary": "Listing images are not delivered responsively.", "evidence": "The image audit found 43 of 45 images without srcset and all 45 without explicit dimensions; one logo was over 2x displayed width.", "artifacts": [ "evidence/images.json" ], "suggestedFix": "Provide responsive srcset/sizes, stable dimensions and appropriately compressed variants at the rendered size.", "effort": "medium", "pathId": "home", "url": "https://www.marktplaats.nl/" }, { "id": "F19", "severity": "high", "principleId": "be-sustainable", "principleCheckId": "no-wasteful-work", "guidanceId": "deprioritize-background-fetches", "guidanceCategory": "performance", "confidence": "high", "summary": "Large advertising and analytics bundles load before user intent.", "evidence": "HAR shows 1.97 MB of script, including ~296 KB PubMatic, multiple 140–202 KB tag-manager bundles and ~201 KB ad code on initial load.", "artifacts": [ "evidence/home-summary.json", "evidence/home.har" ], "suggestedFix": "Defer non-essential advertising/analytics, consolidate measurement tags and stop background work when hidden.", "effort": "large", "pathId": "home", "url": "https://www.marktplaats.nl/" }, { "id": "F20", "severity": "high", "principleId": "be-sustainable", "principleCheckId": "third-party-and-media-budget", "guidanceId": "efficient-background-processing", "guidanceCategory": "performance", "confidence": "high", "summary": "Third-party resources dominate the page budget.", "evidence": "Third-party-classified origins account for 2.49 MB of 2.53 MB transferred and 74 of 77 requests; Lighthouse total payload is 3,084 KiB in its run.", "artifacts": [ "evidence/home-summary.json", "evidence/lighthouse.json" ], "suggestedFix": "Set and enforce per-vendor and total third-party budgets, with delayed loading and removal when value does not justify cost.", "effort": "large", "pathId": "home", "url": "https://www.marktplaats.nl/" }, { "id": "F21", "severity": "low", "principleId": "be-agent-ready", "principleCheckId": "structured-agent-capabilities", "guidanceId": "webmcp", "guidanceCategory": "user-experience", "confidence": "high", "summary": "High-value marketplace actions are not exposed as structured agent capabilities.", "evidence": "The platform probe found no WebMCP/modelContext surface; agents must infer search, filter and listing-contact behavior from the visual DOM.", "artifacts": [ "evidence/platform-probe.json", "evidence/category-probe.json", "evidence/detail-probe.json" ], "suggestedFix": "Expose narrowly scoped, user-confirmed WebMCP tools for search/filtering and safe listing actions, with human review for consequential steps.", "effort": "large", "pathId": "home", "url": "https://www.marktplaats.nl/" } ], "taskList": [ { "id": "T01", "title": "Prioritize the LCP resource, reduce blocking script work and validate mobile field/lab LCP and INP after each change.", "priority": 1, "findingIds": [ "F05" ], "guidanceId": "performance", "status": "open" }, { "id": "T02", "title": "Gate non-essential advertising/analytics behind consent and user intent, reduce vendors, batch measurement, and enforce a third-party byte/request budget.", "priority": 2, "findingIds": [ "F15" ], "guidanceId": "privacy", "status": "open" }, { "id": "T03", "title": "Add a restrictive CSP and mark all HTTPS cookies Secure; use Lax/Strict unless cross-site behavior is required and documented.", "priority": 3, "findingIds": [ "F14" ], "guidanceId": "security", "status": "open" }, { "id": "T04", "title": "Profile the largest tasks, split work, schedule non-critical tasks later and avoid loading ad/analytics code before it is needed.", "priority": 4, "findingIds": [ "F06" ], "guidanceId": "break-up-long-tasks", "status": "open" }, { "id": "T05", "title": "Inline only critical styles, defer non-critical CSS/scripts, and set explicit priority for the actual LCP resource.", "priority": 5, "findingIds": [ "F07" ], "guidanceId": "optimize-script-priority", "status": "open" }, { "id": "T06", "title": "Code-split by user intent and remove duplicate/legacy/unused bundles, especially analytics and advertising code from initial load.", "priority": 6, "findingIds": [ "F08" ], "guidanceId": "identify-heavy-scripts", "status": "open" }, { "id": "T07", "title": "Use native semantics and stable visible/accessible names for every icon button and dialog; ensure aria-label matches visible control text.", "priority": 7, "findingIds": [ "F09" ], "guidanceId": "accessibility", "status": "open" }, { "id": "T08", "title": "Defer non-essential advertising/analytics, consolidate measurement tags and stop background work when hidden.", "priority": 8, "findingIds": [ "F19" ], "guidanceId": "deprioritize-background-fetches", "status": "open" }, { "id": "T09", "title": "Set and enforce per-vendor and total third-party budgets, with delayed loading and removal when value does not justify cost.", "priority": 9, "findingIds": [ "F20" ], "guidanceId": "efficient-background-processing", "status": "open" }, { "id": "T10", "title": "Deploy CSP/frame-ancestors, a strict Referrer-Policy and a least-privilege Permissions-Policy; tighten cross-site cookie posture.", "priority": 10, "findingIds": [ "F17" ], "guidanceId": "security", "status": "open" }, { "id": "T11", "title": "Emit width and height or a stable aspect-ratio for every image so space is reserved before loading.", "priority": 11, "findingIds": [ "F12" ], "guidanceId": "html", "status": "open" }, { "id": "T12", "title": "Provide responsive srcset/sizes, stable dimensions and appropriately compressed variants at the rendered size.", "priority": 12, "findingIds": [ "F18" ], "guidanceId": "optimize-image-priority", "status": "open" }, { "id": "T13", "title": "Wrap primary content in main, provide a meaningful h1, and keep heading levels sequential.", "priority": 13, "findingIds": [ "F10" ], "guidanceId": "accessibility", "status": "open" }, { "id": "T14", "title": "Declare color-scheme and provide preference-driven dark surface/text tokens with prefers-color-scheme or light-dark().", "priority": 14, "findingIds": [ "F01" ], "guidanceId": "dark-mode", "status": "open" }, { "id": "T15", "title": "Disable non-essential shimmer/transition animation inside prefers-reduced-motion: reduce.", "priority": 15, "findingIds": [ "F02" ], "guidanceId": "accessibility", "status": "open" }, { "id": "T16", "title": "Offer passkey/WebAuthn authentication and keep password fallback; request any permissions only after a user action.", "priority": 16, "findingIds": [ "F16" ], "guidanceId": "passkeys", "status": "open" }, { "id": "T17", "title": "Remove avoidable no-store responses/state changes from the navigation path and publish production source maps securely for debugging.", "priority": 17, "findingIds": [ "F13" ], "guidanceId": "html", "status": "open" }, { "id": "T18", "title": "Use dialog/popover with a programmatic name and declarative dismiss behavior for modal and transient surfaces.", "priority": 18, "findingIds": [ "F11" ], "guidanceId": "declarative-dialog-popover-control", "status": "open" }, { "id": "T19", "title": "Give reusable cards, carousels and filter groups containment and adapt them with container queries.", "priority": 19, "findingIds": [ "F04" ], "guidanceId": "size-aware-styling", "status": "open" }, { "id": "T20", "title": "Add progressive View Transitions for listing/category navigation and major same-document state changes, retaining a no-motion fallback.", "priority": 20, "findingIds": [ "F03" ], "guidanceId": "same-document-transitions", "status": "open" }, { "id": "T21", "title": "Expose narrowly scoped, user-confirmed WebMCP tools for search/filtering and safe listing actions, with human review for consequential steps.", "priority": 21, "findingIds": [ "F21" ], "guidanceId": "webmcp", "status": "open" } ], "budget": { "wallClockSeconds": 1900, "pathCount": 6, "auditPasses": 1 }, "agent": "pi", "runId": "2026-07-22T11-50-31-195Z" }