{ "url": "https://fast.com", "auditedAt": "2026-07-21T14:03:52.495Z", "mode": "report", "status": "completed", "statusDetail": "Atomic coverage complete across the single-page speed-test tool and its details/settings interaction surface.", "page": { "appType": "spa", "framework": "Vanilla client-side JavaScript", "notes": "Single-page public speed-test utility. Homepage, live measurement, responsive/preference conditions, and authored settings/help surfaces represent all distinct archetypes. Localized routes share the same template and were not duplicated; external privacy/blog pages are out of scope." }, "evidenceUsed": [ "screenshot", "dom", "evaluate-probe", "layout-metrics", "trace", "har", "discoverability", "headers", "cookies", "trackers", "secrets", "images", "lighthouse", "heap-summary", "curl robots/sitemap/manifest" ], "guidanceConsulted": [ "dark-mode", "accessibility", "component-specific-light-dark-theme", "adapt-scrollbar-to-contrast-preferences", "interactive-content-reveal", "navigation-drawer", "directional-navigation-transitions", "scroll-entry-exit-effects", "scroll-position-aware-elements", "scrollability-affordance-hints", "size-aware-styling", "security", "performance", "optimize-preload-priority", "validate-input-after-interaction", "required-field-feedback", "forms", "passkeys", "efficient-background-processing", "consistent-cross-document-transitions", "coordinate-global-events", "capture-location-agnostic-data", "support-global-calendar-systems", "webmcp", "agentic-forms", "agentic-javascript-tools", "language-model", "translator", "move-dom-element-without-losing-state", "persistent-top-layer-ui", "defer-work-until-scroll-ends" ], "artifacts": [ { "type": "screenshot", "path": "evidence/home-desktop.png", "caption": "Initial desktop speed-test surface", "condition": "desktop", "findingIds": [ "F01" ] }, { "type": "screenshot", "path": "evidence/home-mobile.png", "caption": "Requested 360x800 capture showing scaled desktop viewport", "condition": "viewport: 360x800", "findingIds": [ "F06", "F08", "F16" ] }, { "type": "screenshot", "path": "evidence/home-dark.png", "caption": "Surface under dark preference remains light", "condition": "prefers-color-scheme: dark", "findingIds": [ "F01" ] }, { "type": "screenshot", "path": "evidence/home-contrast-more.png", "caption": "Surface under increased contrast", "condition": "prefers-contrast: more", "findingIds": [] }, { "type": "dom", "path": "evidence/home-dom.json", "caption": "Rendered DOM and authored CSS", "condition": "default", "findingIds": [ "F01", "F03", "F04", "F05", "F07", "F14", "F15" ] }, { "type": "other", "path": "evidence/document-probe.json", "caption": "Document, controls, focus, labels and metadata probe", "condition": "after measurement", "findingIds": [ "F05", "F06", "F08", "F10", "F11", "F14", "F15", "F16" ] }, { "type": "other", "path": "evidence/preferences-probe.json", "caption": "Reduced-motion animation and platform feature probe", "condition": "prefers-reduced-motion: reduce", "findingIds": [ "F02" ] }, { "type": "layout", "path": "evidence/layout-mobile.json", "caption": "Mobile viewport and layout-shift metrics", "condition": "viewport: 360x800", "findingIds": [ "F06", "F16" ] }, { "type": "trace", "path": "evidence/performance-trace.json", "caption": "DevTools load trace", "condition": "12 second load", "findingIds": [] }, { "type": "trace-summary", "path": "evidence/performance-trace-summary.json", "caption": "Compact trace timings and long tasks", "condition": "12 second load", "findingIds": [ "F09" ] }, { "type": "har", "path": "evidence/network.har", "caption": "Network capture including speed measurement", "condition": "12 second load", "findingIds": [] }, { "type": "har-summary", "path": "evidence/network-summary.json", "caption": "Compact request, byte, third-party and hygiene signals", "condition": "12 second load", "findingIds": [] }, { "type": "discoverability", "path": "evidence/discoverability.json", "caption": "Raw HTML versus rendered content analysis", "condition": "JavaScript on/off", "findingIds": [] }, { "type": "screenshot", "path": "evidence/discoverability-rendered.png", "caption": "Browser-rendered crawler comparison", "condition": "JavaScript enabled", "findingIds": [] }, { "type": "screenshot", "path": "evidence/discoverability-crawler.png", "caption": "Crawler-view comparison", "condition": "JavaScript disabled", "findingIds": [] }, { "type": "other", "path": "evidence/headers.json", "caption": "Security response headers", "condition": "default", "findingIds": [ "F12", "F13" ] }, { "type": "other", "path": "evidence/cookies.json", "caption": "Cookie audit", "condition": "default", "findingIds": [] }, { "type": "other", "path": "evidence/trackers.json", "caption": "Third-party and tracker audit", "condition": "default", "findingIds": [] }, { "type": "other", "path": "evidence/secrets.json", "caption": "Client-exposed secret scan", "condition": "default", "findingIds": [] }, { "type": "other", "path": "evidence/images.json", "caption": "Rendered image audit", "condition": "default", "findingIds": [] }, { "type": "lighthouse", "path": "evidence/lighthouse.json", "caption": "Lighthouse mobile audit", "condition": "mobile throttling", "findingIds": [ "F09" ] }, { "type": "other", "path": "evidence/lighthouse-summary.json", "caption": "Selected Lighthouse categories and audits", "condition": "mobile throttling", "findingIds": [ "F09", "F10", "F14" ] }, { "type": "heap", "path": "evidence/heap-baseline.json", "caption": "Baseline heap summary", "condition": "after initial measurement", "findingIds": [] }, { "type": "heap", "path": "evidence/heap-post-interactions.json", "caption": "Heap after ten details/settings cycles", "condition": "10 repeated interactions", "findingIds": [] } ], "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": "Multi-modal CDP/Lighthouse evidence mapped to this atomic check.", "evidence": "The dark-mode screenshot is visually identical to the light capture, and the DOM CSS sets html/body background-color:white with no dark media rule or color-scheme declaration.", "pathIds": [ "home" ], "findingIds": [ "F01" ], "artifacts": [ "evidence/home-dark.png", "evidence/home-desktop.png", "evidence/home-dom.json" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-reduced-motion", "status": "issues", "confidence": "high", "method": "Multi-modal CDP/Lighthouse evidence mapped to this atomic check.", "evidence": "Under prefers-reduced-motion: reduce, the evaluate probe still found uil-ring-anim running infinitely with a 1000 ms duration.", "pathIds": [ "home" ], "findingIds": [ "F02" ], "artifacts": [ "evidence/preferences-probe.json" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-contrast", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "High-contrast screenshot keeps the result, controls, logo and links visually distinguishable; Lighthouse contrast audit passes.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-contrast-more.png", "evidence/lighthouse-summary.json" ] }, { "principleId": "implement-natural-interactions", "checkId": "view-transitions", "status": "issues", "confidence": "high", "method": "Multi-modal CDP/Lighthouse evidence mapped to this atomic check.", "evidence": "DOM/CSS shows hidden panels toggled with display:none/block and no view-transition-name or document.startViewTransition use.", "pathIds": [ "home" ], "findingIds": [ "F03" ], "artifacts": [ "evidence/home-dom.json" ] }, { "principleId": "implement-natural-interactions", "checkId": "scroll-driven-animations", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from recon and rendered/source inspection.", "evidence": "No scroll-linked animation exists on this compact single-screen tool.", "reason": "No scroll-linked animation exists on this compact single-screen tool.", "pathIds": [ "home" ] }, { "principleId": "implement-natural-interactions", "checkId": "physical-gestures", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from recon and rendered/source inspection.", "evidence": "The tool exposes no swipe, drag, carousel or other gesture-driven interaction.", "reason": "The tool exposes no swipe, drag, carousel or other gesture-driven interaction.", "pathIds": [ "home" ] }, { "principleId": "provide-guided-navigation", "checkId": "scroll-state-aware-chrome", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from recon and rendered/source inspection.", "evidence": "The primary tool is a single-viewport result surface with no meaningful scrolling chrome.", "reason": "The primary tool is a single-viewport result surface with no meaningful scrolling chrome.", "pathIds": [ "home" ] }, { "principleId": "provide-guided-navigation", "checkId": "anchored-positioning", "status": "issues", "confidence": "high", "method": "Multi-modal CDP/Lighthouse evidence mapped to this atomic check.", "evidence": "DOM/CSS shows .dropdown-content position:absolute; right:0 with no popover, anchor-name, position-anchor or position-try fallback.", "pathIds": [ "home" ], "findingIds": [ "F04" ], "artifacts": [ "evidence/home-dom.json" ] }, { "principleId": "provide-guided-navigation", "checkId": "directs-attention", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "The changing speed number, adjacent progress control and compact visual hierarchy keep attention on the active measurement.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dom.json" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "no-intrusive-interruptions", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "Initial screenshots show only the speed test with no modal, consent wall, ad or obscuring banner.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dom.json" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "semantic-dismissible-primitives", "status": "issues", "confidence": "high", "method": "Multi-modal CDP/Lighthouse evidence mapped to this atomic check.", "evidence": "The document probe found zero dialog/popover elements and three custom overlay/disclosure containers.", "pathIds": [ "home" ], "findingIds": [ "F05" ], "artifacts": [ "evidence/document-probe.json", "evidence/home-dom.json" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "reduced-chrome", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "Desktop and mobile captures devote nearly the entire viewport to the result and contain no advertising or decorative application frame.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dom.json" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "responsive-no-horizontal-scroll", "status": "issues", "confidence": "high", "method": "Multi-modal CDP/Lighthouse evidence mapped to this atomic check.", "evidence": "At a requested 360x800 viewport, layout reported innerWidth/clientWidth 980 and hasViewportMeta:false; the mobile screenshot shows small scaled header controls.", "pathIds": [ "home" ], "findingIds": [ "F06" ], "artifacts": [ "evidence/layout-mobile.json", "evidence/home-mobile.png", "evidence/document-probe.json" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "component-level-responsiveness", "status": "issues", "confidence": "high", "method": "Multi-modal CDP/Lighthouse evidence mapped to this atomic check.", "evidence": "The captured CSS uses @media (orientation: portrait) and vh/vw sizing but contains no container-type or @container rules for reused controls/panels.", "pathIds": [ "home" ], "findingIds": [ "F07" ], "artifacts": [ "evidence/home-dom.json" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "input-modality-aware", "status": "issues", "confidence": "high", "method": "Multi-modal CDP/Lighthouse evidence mapped to this atomic check.", "evidence": "The 360px capture is a scaled 980px layout; focus probes report outline:none on Show more info, Settings, Save, Cancel and all settings inputs.", "pathIds": [ "home" ], "findingIds": [ "F08" ], "artifacts": [ "evidence/home-mobile.png", "evidence/document-probe.json" ] }, { "principleId": "support-core-task-success", "checkId": "clear-purpose-and-primary-action", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "Title, FAST logo and automatically starting measurement make the purpose and next action immediately clear.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dom.json" ] }, { "principleId": "support-core-task-success", "checkId": "primary-flow-completion", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "Repeated live captures produced numeric Mbps results without account walls or manual setup.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dom.json" ] }, { "principleId": "support-core-task-success", "checkId": "clear-system-state-and-recovery", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "The DOM exposes progress, pause/play/restart states and specific unstable/no-connection messages; the core control remains available.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dom.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "good-core-web-vitals", "status": "pass", "confidence": "medium", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "Lighthouse LCP was 2.4 s and CLS 0.019; CDP trace LCP/FCP was 541 ms. No field INP was available.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-summary.json", "evidence/performance-trace-summary.json", "evidence/network-summary.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "visual-stability", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "Mobile layout observer measured CLS 0.006 and Lighthouse measured 0.019, both in the good range.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-summary.json", "evidence/performance-trace-summary.json", "evidence/network-summary.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-main-thread", "status": "issues", "confidence": "high", "method": "Multi-modal CDP/Lighthouse evidence mapped to this atomic check.", "evidence": "Lighthouse measured 640 ms Total Blocking Time (score 0.46), although the unthrottled CDP trace saw no long tasks; the throttled mobile result establishes a risk on slower devices.", "pathIds": [ "home" ], "findingIds": [ "F09" ], "artifacts": [ "evidence/lighthouse.json", "evidence/lighthouse-summary.json", "evidence/performance-trace-summary.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-resource-delivery", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "HAR totals only 85 KB transferred, reports useful cache headers and no redirects/HTTP errors; two tiny stylesheets are the only confirmed render-blocking resources.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-summary.json", "evidence/performance-trace-summary.json", "evidence/network-summary.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "trim-unused-and-duplicate-code", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "The application ships one 27 KB script and two small stylesheets; HAR/Lighthouse provide no evidence of large duplicate or legacy bundles.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-summary.json", "evidence/performance-trace-summary.json", "evidence/network-summary.json" ] }, { "principleId": "be-inclusive", "checkId": "names-roles-labels", "status": "issues", "confidence": "high", "method": "Multi-modal CDP/Lighthouse evidence mapped to this atomic check.", "evidence": "Lighthouse identifies Help, Facebook and Twitter links without discernible names; the document probe finds no labels for min/max connection and duration inputs.", "pathIds": [ "home" ], "findingIds": [ "F10" ], "artifacts": [ "evidence/lighthouse-summary.json", "evidence/document-probe.json" ] }, { "principleId": "be-inclusive", "checkId": "sufficient-contrast", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "Lighthouse color-contrast audit passes and the high-contrast capture remains readable.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-contrast-more.png", "evidence/lighthouse-summary.json" ] }, { "principleId": "be-inclusive", "checkId": "structure-and-focus", "status": "issues", "confidence": "high", "method": "Multi-modal CDP/Lighthouse evidence mapped to this atomic check.", "evidence": "The document probe found zero h1/h2/h3 elements and outline:none on the main disclosure, settings controls and inputs.", "pathIds": [ "home" ], "findingIds": [ "F11" ], "artifacts": [ "evidence/document-probe.json" ] }, { "principleId": "be-inclusive", "checkId": "legible-text", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "The primary result is large, unclipped and visually dominant in desktop and mobile captures; explanatory text uses a conventional readable face.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dom.json" ] }, { "principleId": "be-inclusive", "checkId": "zoom-reflow-targets-and-media", "status": "issues", "confidence": "high", "method": "Multi-modal CDP/Lighthouse evidence mapped to this atomic check.", "evidence": "At a requested 360x800 viewport, layout reported innerWidth/clientWidth 980 and hasViewportMeta:false; the mobile screenshot shows small scaled header controls.", "pathIds": [ "home" ], "findingIds": [ "F06", "F08" ], "artifacts": [ "evidence/layout-mobile.json", "evidence/home-mobile.png", "evidence/document-probe.json" ] }, { "principleId": "follow-best-practices", "checkId": "no-console-errors", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "Lighthouse reports no browser errors logged to the console.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dom.json" ] }, { "principleId": "follow-best-practices", "checkId": "sound-document-and-assets", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "DOM has an HTML doctype and UTF-8 charset; imagery is SVG/CSS and the image audit found no img sizing/aspect issues.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dom.json" ] }, { "principleId": "follow-best-practices", "checkId": "browser-platform-hygiene", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "Lighthouse reports no DevTools inspector issues and confirms BFCache eligibility; no prompt-on-load or paste-prevention behavior was observed.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dom.json" ] }, { "principleId": "be-discoverable", "checkId": "title-and-description", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "DOM and raw HTML both include a descriptive title and meta description.", "pathIds": [ "home" ], "artifacts": [ "evidence/discoverability.json", "evidence/home-dom.json" ] }, { "principleId": "be-discoverable", "checkId": "crawlable-and-mobile-friendly", "status": "issues", "confidence": "high", "method": "DOM, robots.txt and 360x800 layout evidence.", "evidence": "robots.txt allows crawling and links use hrefs, but the DOM has no viewport meta and a requested 360px viewport renders at 980 CSS pixels.", "pathIds": [ "home" ], "artifacts": [ "evidence/layout-mobile.json", "evidence/document-probe.json", "evidence/home-mobile.png" ], "findingIds": [ "F16" ] }, { "principleId": "be-discoverable", "checkId": "canonical-and-indexing-signals", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "Main response is 200 with canonical URL, extensive hreflang alternatives, and robots.txt allows indexing.", "pathIds": [ "home" ], "artifacts": [ "evidence/discoverability.json", "evidence/home-dom.json" ] }, { "principleId": "be-discoverable", "checkId": "structured-and-shareable-metadata", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "The simple utility provides matching Open Graph and Twitter title, description and image metadata; entity-specific JSON-LD is not necessary.", "pathIds": [ "home" ], "artifacts": [ "evidence/discoverability.json", "evidence/home-dom.json" ] }, { "principleId": "be-private-and-secure", "checkId": "secure-transport-and-headers", "status": "issues", "confidence": "high", "method": "Multi-modal CDP/Lighthouse evidence mapped to this atomic check.", "evidence": "The headers primitive confirms HTTPS and HSTS but no Content-Security-Policy and no X-Content-Type-Options.", "pathIds": [ "home" ], "findingIds": [ "F12" ], "artifacts": [ "evidence/headers.json" ] }, { "principleId": "be-private-and-secure", "checkId": "data-minimisation-and-third-parties", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "No cookies, known trackers or exposed secrets were found; third-party requests are Netflix/Fast speed-test infrastructure necessary to the measurement.", "pathIds": [ "home" ], "artifacts": [ "evidence/headers.json", "evidence/trackers.json", "evidence/cookies.json", "evidence/secrets.json" ] }, { "principleId": "be-private-and-secure", "checkId": "in-context-permissions-and-modern-auth", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "No permission prompt or authentication flow exists; no unrelated privileged API request was observed.", "pathIds": [ "home" ], "artifacts": [ "evidence/headers.json", "evidence/trackers.json", "evidence/cookies.json", "evidence/secrets.json" ] }, { "principleId": "be-private-and-secure", "checkId": "defensive-browser-policies", "status": "issues", "confidence": "high", "method": "Multi-modal CDP/Lighthouse evidence mapped to this atomic check.", "evidence": "The headers primitive found no X-Frame-Options or CSP frame-ancestors, Referrer-Policy, or Permissions-Policy.", "pathIds": [ "home" ], "findingIds": [ "F13" ], "artifacts": [ "evidence/headers.json" ] }, { "principleId": "be-resilient", "checkId": "progressive-enhancement", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "Raw HTML returns descriptive/help content with 100% rendered-word coverage; the actual bandwidth measurement necessarily requires script and network.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dom.json" ] }, { "principleId": "be-resilient", "checkId": "resilient-runtime-behaviour", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "The compact surface completed repeated measurements without clipped visible overlays or runtime errors; BFCache is eligible.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dom.json" ] }, { "principleId": "be-resilient", "checkId": "offline-and-installable", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from recon and rendered/source inspection.", "evidence": "A live bandwidth measurement is intrinsically online-only; the favicon manifest is not an app manifest and no offline flow is expected.", "reason": "A live bandwidth measurement is intrinsically online-only; the favicon manifest is not an app manifest and no offline flow is expected.", "pathIds": [ "home" ] }, { "principleId": "be-resilient", "checkId": "network-and-http-failure-states", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "Authored DOM contains distinct unstable-connection and no-connection messages plus a reusable play/restart control.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dom.json" ] }, { "principleId": "be-internationalised", "checkId": "lang-dir-and-logical-properties", "status": "issues", "confidence": "high", "method": "Multi-modal CDP/Lighthouse evidence mapped to this atomic check.", "evidence": "Lighthouse fails html-has-lang; the probe reports html.lang empty while body uses a nonstandard language=\"en\" attribute. Captured CSS uses left/right margins, floats and positioning rather than logical properties.", "pathIds": [ "home" ], "findingIds": [ "F14" ], "artifacts": [ "evidence/lighthouse-summary.json", "evidence/document-probe.json", "evidence/home-dom.json" ] }, { "principleId": "be-internationalised", "checkId": "locale-aware-data", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from recon and rendered/source inspection.", "evidence": "The page renders no dates, currencies, locale-sensitive numbers or calendar data.", "reason": "The page renders no dates, currencies, locale-sensitive numbers or calendar data.", "pathIds": [ "home" ] }, { "principleId": "be-internationalised", "checkId": "time-zone-correctness", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from recon and rendered/source inspection.", "evidence": "The page contains no events, dates or time-zone-sensitive data.", "reason": "The page contains no events, dates or time-zone-sensitive data.", "pathIds": [ "home" ] }, { "principleId": "be-trustworthy", "checkId": "no-dark-patterns", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "Screenshots and network evidence show an ad-free tool with no consent wall, upsell, forced continuity or disguised action.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dom.json" ] }, { "principleId": "be-trustworthy", "checkId": "humane-error-handling", "status": "issues", "confidence": "high", "method": "Multi-modal CDP/Lighthouse evidence mapped to this atomic check.", "evidence": "The settings DOM exposes min/max numeric inputs without labels, aria-describedby or a visible/announced validation message container.", "pathIds": [ "home" ], "findingIds": [ "F15" ], "artifacts": [ "evidence/home-dom.json", "evidence/document-probe.json" ] }, { "principleId": "be-trustworthy", "checkId": "trustworthy-input-assistance", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from recon and rendered/source inspection.", "evidence": "The settings contain only bounded test-configuration numbers/checkboxes; address, payment and identity autofill do not apply.", "reason": "The settings contain only bounded test-configuration numbers/checkboxes; address, payment and identity autofill do not apply.", "pathIds": [ "home" ] }, { "principleId": "be-trustworthy", "checkId": "safe-commercial-and-account-flows", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from recon and rendered/source inspection.", "evidence": "There is no checkout, subscription, authentication or account-management flow.", "reason": "There is no checkout, subscription, authentication or account-management flow.", "pathIds": [ "home" ] }, { "principleId": "be-sustainable", "checkId": "optimised-assets", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "Only 3.2 KB of image transfer was observed and brand imagery is SVG/CSS; image audit found no raster waste.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dom.json" ] }, { "principleId": "be-sustainable", "checkId": "no-wasteful-work", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "The 58 measurement fetches are proportionate to the explicit speed-test task; no unrelated analytics or idle background work was observed.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dom.json" ] }, { "principleId": "be-sustainable", "checkId": "third-party-and-media-budget", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "No audio/video or trackers load; third-party traffic is the measurement itself and total transferred bytes during capture were 85 KB.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dom.json" ] }, { "principleId": "be-agent-ready", "checkId": "structured-agent-capabilities", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from recon and rendered/source inspection.", "evidence": "This small public diagnostic does not declare an agent-facing intent; emerging WebMCP capability is an opportunity, not an obligation.", "reason": "This small public diagnostic does not declare an agent-facing intent; emerging WebMCP capability is an opportunity, not an obligation.", "pathIds": [ "home" ] }, { "principleId": "be-agent-ready", "checkId": "on-device-inference", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from recon and rendered/source inspection.", "evidence": "The deterministic network measurement has no useful language-model or summarisation task.", "reason": "The deterministic network measurement has no useful language-model or summarisation task.", "pathIds": [ "home" ] }, { "principleId": "be-memory-efficient", "checkId": "no-leak-under-repeated-interaction", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "After ten details/settings/cancel cycles, heap summary decreased from 2,351,591 to 2,032,939 self-size bytes and node count from 61,641 to 46,050; no retained-growth signal appeared.", "pathIds": [ "home" ], "artifacts": [ "evidence/heap-baseline.json", "evidence/heap-post-interactions.json" ] }, { "principleId": "be-memory-efficient", "checkId": "bounded-footprint", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "Both heap summaries are about 2.0-2.35 MB self size with 46k-62k nodes, proportionate to the small application.", "pathIds": [ "home" ], "artifacts": [ "evidence/heap-baseline.json", "evidence/heap-post-interactions.json" ] }, { "principleId": "be-memory-efficient", "checkId": "no-detached-dom-or-unbounded-listeners", "status": "pass", "confidence": "high", "method": "Direct visual, DOM, network, performance or runtime evidence tailored to this check.", "evidence": "Before/after summaries show no Detached* constructor among top populations and no total node/closure growth after repeated interaction.", "pathIds": [ "home" ], "artifacts": [ "evidence/heap-baseline.json", "evidence/heap-post-interactions.json" ] } ], "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" ] }, { "principleId": "adapt-to-the-form-factor", "expectation": "default", "status": "issues", "findingIds": [ "F06", "F07", "F08" ] }, { "principleId": "support-core-task-success", "expectation": "default", "status": "pass" }, { "principleId": "be-fast-and-stable", "expectation": "default", "status": "issues", "findingIds": [ "F09" ] }, { "principleId": "be-inclusive", "expectation": "default", "status": "issues", "findingIds": [ "F10", "F11", "F06", "F08" ] }, { "principleId": "follow-best-practices", "expectation": "default", "status": "pass" }, { "principleId": "be-discoverable", "expectation": "default", "status": "issues", "findingIds": [ "F16" ] }, { "principleId": "be-private-and-secure", "expectation": "default", "status": "issues", "findingIds": [ "F12", "F13" ] }, { "principleId": "be-resilient", "expectation": "contextual", "status": "pass" }, { "principleId": "be-internationalised", "expectation": "contextual", "status": "issues", "findingIds": [ "F14" ] }, { "principleId": "be-trustworthy", "expectation": "default", "status": "issues", "findingIds": [ "F15" ] }, { "principleId": "be-sustainable", "expectation": "contextual", "status": "pass" }, { "principleId": "be-agent-ready", "expectation": "contextual", "status": "not-applicable", "reason": "Derived from atomic check outcomes." }, { "principleId": "be-memory-efficient", "expectation": "default", "status": "pass" } ], "paths": [ { "id": "home", "description": "Homepage and automatically running/completed speed measurement; the site is genuinely a single-page utility.", "url": "https://fast.com/", "conditions": [ "desktop", "viewport: 360x800", "prefers-color-scheme: dark", "prefers-reduced-motion: reduce", "prefers-contrast: more", "JavaScript disabled", "mobile Lighthouse throttling" ], "result": "issues" }, { "id": "details-settings", "description": "Show-more/details, settings fields and help/disclosure surface; represents the only secondary interactive archetype.", "url": "https://fast.com/", "conditions": [ "repeated open/settings/cancel interaction", "DOM/CSS inspection" ], "result": "issues" } ], "findings": [ { "id": "F01", "severity": "medium", "confidence": "high", "principleId": "respect-user-preferences", "principleCheckId": "respects-color-scheme", "guidanceId": "dark-mode", "summary": "The interface is hard-coded to a light theme.", "evidence": "The dark-mode screenshot is visually identical to the light capture, and the DOM CSS sets html/body background-color:white with no dark media rule or color-scheme declaration.", "artifacts": [ "evidence/home-dark.png", "evidence/home-desktop.png", "evidence/home-dom.json" ], "suggestedFix": "Declare color-scheme: light dark and retint surfaces, text, controls and theme-color with prefers-color-scheme or light-dark().", "effort": "small", "pathId": "home", "url": "https://fast.com/" }, { "id": "F02", "severity": "medium", "confidence": "high", "principleId": "respect-user-preferences", "principleCheckId": "respects-reduced-motion", "guidanceId": "accessibility", "summary": "The loading spinner keeps rotating when reduced motion is requested.", "evidence": "Under prefers-reduced-motion: reduce, the evaluate probe still found uil-ring-anim running infinitely with a 1000 ms duration.", "artifacts": [ "evidence/preferences-probe.json" ], "suggestedFix": "Disable the non-essential rotation in a prefers-reduced-motion: reduce media query and retain a static progress state.", "effort": "trivial", "pathId": "home", "url": "https://fast.com/" }, { "id": "F03", "severity": "low", "confidence": "high", "principleId": "implement-natural-interactions", "principleCheckId": "view-transitions", "guidanceId": "interactive-content-reveal", "summary": "Details, settings and help swap abruptly through display changes.", "evidence": "DOM/CSS shows hidden panels toggled with display:none/block and no view-transition-name or document.startViewTransition use.", "artifacts": [ "evidence/home-dom.json" ], "suggestedFix": "Use progressive same-document View Transitions or a reduced-motion-aware entry/exit transition when panels open and close.", "effort": "small", "pathId": "home", "url": "https://fast.com/" }, { "id": "F04", "severity": "low", "confidence": "high", "principleId": "provide-guided-navigation", "principleCheckId": "anchored-positioning", "guidanceId": "persistent-top-layer-ui", "summary": "The language menu is a manually positioned custom overlay.", "evidence": "DOM/CSS shows .dropdown-content position:absolute; right:0 with no popover, anchor-name, position-anchor or position-try fallback.", "artifacts": [ "evidence/home-dom.json" ], "suggestedFix": "Use a popover anchored to the language button and CSS anchor positioning with fallback positions.", "effort": "small", "pathId": "home", "url": "https://fast.com/" }, { "id": "F05", "severity": "medium", "confidence": "high", "principleId": "maximize-content-reduce-noise", "principleCheckId": "semantic-dismissible-primitives", "guidanceId": "interactive-content-reveal", "summary": "Dropdown, settings and help disclosures use generic divs and manual visibility toggles.", "evidence": "The document probe found zero dialog/popover elements and three custom overlay/disclosure containers.", "artifacts": [ "evidence/document-probe.json", "evidence/home-dom.json" ], "suggestedFix": "Use popover for the language menu and details/dialog semantics for disclosure and settings, preserving light-dismiss and keyboard behavior.", "effort": "medium", "pathId": "home", "url": "https://fast.com/" }, { "id": "F06", "severity": "high", "confidence": "high", "principleId": "adapt-to-the-form-factor", "principleCheckId": "responsive-no-horizontal-scroll", "guidanceId": "css", "summary": "The page omits the viewport meta tag, so mobile browsers render a 980 CSS-pixel desktop viewport and scale it down.", "evidence": "At a requested 360x800 viewport, layout reported innerWidth/clientWidth 980 and hasViewportMeta:false; the mobile screenshot shows small scaled header controls.", "artifacts": [ "evidence/layout-mobile.json", "evidence/home-mobile.png", "evidence/document-probe.json" ], "suggestedFix": "Add and re-test the portrait layout without disabling zoom.", "effort": "trivial", "pathId": "home", "url": "https://fast.com/" }, { "id": "F07", "severity": "low", "confidence": "high", "principleId": "adapt-to-the-form-factor", "principleCheckId": "component-level-responsiveness", "guidanceId": "size-aware-styling", "summary": "Responsive behavior is tied only to viewport orientation and global media rules.", "evidence": "The captured CSS uses @media (orientation: portrait) and vh/vw sizing but contains no container-type or @container rules for reused controls/panels.", "artifacts": [ "evidence/home-dom.json" ], "suggestedFix": "Make reusable result and settings components size-aware with container queries where they can appear in constrained containers.", "effort": "medium", "pathId": "home", "url": "https://fast.com/" }, { "id": "F08", "severity": "high", "confidence": "high", "principleId": "adapt-to-the-form-factor", "principleCheckId": "input-modality-aware", "guidanceId": "accessibility", "summary": "Visible controls are too small on mobile and custom controls lack a visible focus treatment.", "evidence": "The 360px capture is a scaled 980px layout; focus probes report outline:none on Show more info, Settings, Save, Cancel and all settings inputs.", "artifacts": [ "evidence/home-mobile.png", "evidence/document-probe.json" ], "suggestedFix": "Provide at least 44x44 CSS-pixel touch targets and a high-contrast :focus-visible style for every actionable control.", "effort": "small", "pathId": "home", "url": "https://fast.com/" }, { "id": "F09", "severity": "high", "confidence": "high", "principleId": "be-fast-and-stable", "principleCheckId": "efficient-main-thread", "guidanceId": "performance", "summary": "Mobile Lighthouse observed substantial main-thread blocking.", "evidence": "Lighthouse measured 640 ms Total Blocking Time (score 0.46), although the unthrottled CDP trace saw no long tasks; the throttled mobile result establishes a risk on slower devices.", "artifacts": [ "evidence/lighthouse.json", "evidence/lighthouse-summary.json", "evidence/performance-trace-summary.json" ], "suggestedFix": "Profile the startup and speed-test loop under mobile throttling, then split or schedule long work and avoid tight synchronous measurement/update loops.", "effort": "medium", "pathId": "home", "url": "https://fast.com/" }, { "id": "F10", "severity": "high", "confidence": "high", "principleId": "be-inclusive", "principleCheckId": "names-roles-labels", "guidanceId": "accessibility", "summary": "Several icon links and numeric settings fields lack accessible names or associated labels.", "evidence": "Lighthouse identifies Help, Facebook and Twitter links without discernible names; the document probe finds no labels for min/max connection and duration inputs.", "artifacts": [ "evidence/lighthouse-summary.json", "evidence/document-probe.json" ], "suggestedFix": "Give every icon control an accessible name and associate explicit labels with each numeric input.", "effort": "small", "pathId": "home", "url": "https://fast.com/" }, { "id": "F11", "severity": "high", "confidence": "high", "principleId": "be-inclusive", "principleCheckId": "structure-and-focus", "guidanceId": "accessibility", "summary": "The page has no heading structure and key custom controls suppress focus outlines.", "evidence": "The document probe found zero h1/h2/h3 elements and outline:none on the main disclosure, settings controls and inputs.", "artifacts": [ "evidence/document-probe.json" ], "suggestedFix": "Add a logical h1/section heading structure and consistent :focus-visible styling; manage focus when disclosures open and close.", "effort": "small", "pathId": "home", "url": "https://fast.com/" }, { "id": "F12", "severity": "high", "confidence": "high", "principleId": "be-private-and-secure", "principleCheckId": "secure-transport-and-headers", "guidanceId": "security", "summary": "Important security headers are absent.", "evidence": "The headers primitive confirms HTTPS and HSTS but no Content-Security-Policy and no X-Content-Type-Options.", "artifacts": [ "evidence/headers.json" ], "suggestedFix": "Deploy a restrictive CSP (including frame-ancestors) and X-Content-Type-Options: nosniff, testing in report-only mode first.", "effort": "medium", "pathId": "home", "url": "https://fast.com/" }, { "id": "F13", "severity": "medium", "confidence": "high", "principleId": "be-private-and-secure", "principleCheckId": "defensive-browser-policies", "guidanceId": "security", "summary": "Clickjacking, referrer and permissions defenses are not declared.", "evidence": "The headers primitive found no X-Frame-Options or CSP frame-ancestors, Referrer-Policy, or Permissions-Policy.", "artifacts": [ "evidence/headers.json" ], "suggestedFix": "Add frame-ancestors, a strict Referrer-Policy and a least-privilege Permissions-Policy alongside the CSP rollout.", "effort": "small", "pathId": "home", "url": "https://fast.com/" }, { "id": "F14", "severity": "high", "confidence": "high", "principleId": "be-internationalised", "principleCheckId": "lang-dir-and-logical-properties", "guidanceId": "translator", "summary": "The document language is not exposed on the root element and layout CSS relies heavily on physical directions.", "evidence": "Lighthouse fails html-has-lang; the probe reports html.lang empty while body uses a nonstandard language=\"en\" attribute. Captured CSS uses left/right margins, floats and positioning rather than logical properties.", "artifacts": [ "evidence/lighthouse-summary.json", "evidence/document-probe.json", "evidence/home-dom.json" ], "suggestedFix": "Set lang on , set dir for RTL locales, and migrate directional layout to logical properties with locale tests.", "effort": "medium", "pathId": "home", "url": "https://fast.com/" }, { "id": "F15", "severity": "medium", "confidence": "high", "principleId": "be-trustworthy", "principleCheckId": "humane-error-handling", "guidanceId": "validate-input-after-interaction", "summary": "Settings number fields provide bounds but no associated guidance or accessible validation surface.", "evidence": "The settings DOM exposes min/max numeric inputs without labels, aria-describedby or a visible/announced validation message container.", "artifacts": [ "evidence/home-dom.json", "evidence/document-probe.json" ], "suggestedFix": "Associate field labels and hints, validate after interaction, and announce actionable range errors through an aria-live or linked error message.", "effort": "small", "pathId": "home", "url": "https://fast.com/" }, { "id": "F16", "pathId": "home", "url": "https://fast.com/", "severity": "medium", "confidence": "high", "principleId": "be-discoverable", "principleCheckId": "crawlable-and-mobile-friendly", "guidanceId": "css", "summary": "The page is crawlable but not correctly configured for mobile rendering.", "evidence": "robots.txt allows crawling and links use hrefs, but the DOM has no viewport meta and a requested 360px viewport renders at 980 CSS pixels.", "artifacts": [ "evidence/layout-mobile.json", "evidence/document-probe.json", "evidence/home-mobile.png" ], "suggestedFix": "Add a scalable width=device-width viewport declaration while preserving the existing crawlable links and robots policy.", "effort": "trivial" } ], "taskList": [ { "id": "T01", "title": "Restore real mobile layout, scalable viewport, touch targets and focus visibility", "priority": 1, "findingIds": [ "F06", "F08", "F11", "F16" ], "guidanceId": "accessibility", "status": "open" }, { "id": "T02", "title": "Add accessible names, labels, headings and humane field errors", "priority": 2, "findingIds": [ "F10", "F11", "F14", "F15" ], "guidanceId": "accessibility", "status": "open" }, { "id": "T03", "title": "Deploy CSP and defensive response headers", "priority": 3, "findingIds": [ "F12", "F13" ], "guidanceId": "security", "status": "open" }, { "id": "T04", "title": "Respect dark-mode and reduced-motion preferences", "priority": 4, "findingIds": [ "F01", "F02" ], "guidanceId": "dark-mode", "status": "open" }, { "id": "T05", "title": "Reduce mobile main-thread blocking in the startup/test loop", "priority": 5, "findingIds": [ "F09" ], "guidanceId": "performance", "status": "open" }, { "id": "T06", "title": "Replace custom disclosure/overlay plumbing with semantic modern primitives", "priority": 6, "findingIds": [ "F03", "F04", "F05" ], "guidanceId": "interactive-content-reveal", "status": "open" }, { "id": "T07", "title": "Adopt container-aware component sizing and root-language/logical CSS hygiene", "priority": 7, "findingIds": [ "F07", "F14" ], "guidanceId": "size-aware-styling", "status": "open" } ], "budget": { "pathCount": 2, "auditPasses": 1 }, "agent": "pi", "runId": "2026-07-21T14-01-38-933Z" }