{ "url": "https://finance.yahoo.com", "auditedAt": "2026-07-21T06:39:24.527Z", "mode": "report", "status": "completed", "statusDetail": "Coverage-complete agentic audit after explicit Reject all; fresh-crawler consent behavior is reported as evidence, not treated as a blocker.", "page": { "appType": "hybrid", "framework": "SvelteKit (x-sveltekit-page response header)", "notes": "Public finance/news dashboard with server-delivered metadata and client-enhanced widgets." }, "evidenceUsed": [ "raw-CDP custom probe", "screenshot", "DOM/computed styles", "network response headers and request inventory", "Performance.getMetrics", "discoverability", "cookies", "secrets", "robots/sitemap fetch", "Modern Web Guidance 0.0.172" ], "guidanceConsulted": [ "dark-mode", "component-specific-light-dark-theme", "accessibility", "adapt-scrollbar-to-contrast-preferences", "same-document-transitions", "cross-document-transitions", "group-element-transitions", "faster-spa-view-transitions", "scrollytelling", "parallax-scroll-effects", "scroll-entry-exit-effects", "carousel-slide-effects", "physics-based-easing", "individual-transform-properties", "animate-element-entry-exit", "animate-to-from-top-layer", "animate-to-intrinsic-sizes", "dynamic-sibling-animations", "interactive-content-reveal", "pull-to-reveal", "swipe-to-remove", "shrinking-header-on-scroll", "scroll-progress-indicator", "scroll-position-aware-elements", "scroll-snap-realtime-feedback", "scroll-snap-state-sync", "scroll-target-on-load", "soft-edge-content-fade", "scrollability-affordance-hints", "anchor-positioning-tab-underline", "position-aware-tooltips", "interest-triggered-tooltips", "interest-triggered-action-previews", "directional-navigation-transitions", "carousel-snap-highlights", "navigation-drawer", "stack-drill-down", "persistent-app-tours", "persistent-toast-notifications", "light-dismiss-a-dialog", "platform-controls-dismiss-dialog", "declarative-dialog-popover-control", "animated-select-picker", "branded-select-styling", "brand-consistent-forms", "custom-select-picker-layouts", "rich-media-picker", "complex-shapes", "shaped-cutouts", "overflow-clipping-control", "visually-texture-content", "apply-webgl-shaders", "interactive-content-in-3d-scenes", "highlight-text-ranges", "prevent-text-wrapping", "customize-scrollbar-color-and-thickness", "export-html-media-from-canvas", "fluid-scaling", "calculate-with-intrinsic-sizes", "css-layout", "size-aware-styling", "content-based-styling", "child-state-based-styling", "design-token-reactivity", "dynamic-sibling-styling", "form-fields-automatically-fit-contents", "improve-text-layout-and-legibility", "forms", "accessible-error-announcement", "required-field-feedback", "validate-input-after-interaction", "identify-inp-causes", "schedule-tasks-by-priority", "optimize-preload-priority", "improve-next-page-load-performance", "interactions-in-complex-layouts", "performance", "visually-stable-font-fallbacks", "break-up-long-tasks", "identify-heavy-scripts", "optimize-script-priority", "defer-rendering-heavy-content", "defer-work-until-scroll-ends", "optimize-image-priority", "conditional-async-dependencies", "expose-canvas-content-to-browser-features", "move-dom-element-without-losing-state", "precise-text-alignment", "visually-stable-mixed-fonts", "css", "html", "reduce-style-repetition", "security", "privacy", "batch-analytics-events", "full-session-analytics", "calculate-total-foreground-time", "passkeys", "passkey-registration", "passkey-authentication", "passkey-reauthentication", "passkey-conditional-create", "passkey-management", "flicker-free-client-side-ab-testing", "consistent-cross-document-transitions", "stabilize-reactive-state", "resilient-context-menus-and-nested-dropdowns", "persistent-top-layer-ui", "detect-initial-visibility-state", "sequence-distributed-events", "translator", "language-detection", "support-global-calendar-systems", "capture-location-agnostic-data", "format-human-readable-durations", "manage-recurring-intervals", "calculate-event-differentials", "coordinate-global-events", "model-partial-time-concepts", "search-hidden-content", "select-menu-interaction", "style-parent-with-has", "autofill-address-form", "autofill-payment-form", "autofill-sign-in-form", "autofill-sign-up-form", "autofill-highlight-inputs", "deliver-optimized-decorative-images", "resolution-optimized-pseudo-elements", "deprioritize-background-fetches", "efficient-background-processing", "webmcp", "agentic-forms", "agentic-javascript-tools", "language-model", "summarizer" ], "artifacts": [ { "type": "screenshot", "path": "evidence/home-live.png", "caption": "Homepage, desktop dark", "condition": "Homepage, desktop dark", "findingIds": [ "f-clutter", "f-flow-recovery" ] }, { "type": "screenshot", "path": "evidence/home-mobile.png", "caption": "Homepage at 360x800", "condition": "Homepage at 360x800", "findingIds": [ "f-flow-recovery" ] }, { "type": "screenshot", "path": "evidence/home-light.png", "caption": "Homepage under prefers-color-scheme: light", "condition": "Homepage under prefers-color-scheme: light", "findingIds": [] }, { "type": "screenshot", "path": "evidence/home-dark.png", "caption": "Homepage under prefers-color-scheme: dark", "condition": "Homepage under prefers-color-scheme: dark", "findingIds": [ "f-input" ] }, { "type": "screenshot", "path": "evidence/home-contrast.png", "caption": "Homepage under prefers-contrast: more", "condition": "Homepage under prefers-contrast: more", "findingIds": [] }, { "type": "screenshot", "path": "evidence/quote-live.png", "caption": "AAPL quote template", "condition": "AAPL quote template", "findingIds": [ "f-overflow" ] }, { "type": "screenshot", "path": "evidence/news-live.png", "caption": "News listing template", "condition": "News listing template", "findingIds": [] }, { "type": "dom", "path": "evidence/home-live.json", "caption": "Raw CDP DOM/CSS/network/performance homepage probe", "condition": "Raw CDP DOM/CSS/network/performance homepage probe", "findingIds": [ "f-nav", "f-input" ] }, { "type": "dom", "path": "evidence/home-light.json", "caption": "Raw CDP light-mode network/performance probe", "condition": "Raw CDP light-mode network/performance probe", "findingIds": [ "f-network", "f-privacy", "f-security", "f-sustainability" ] }, { "type": "dom", "path": "evidence/home-reduced.json", "caption": "Raw CDP reduced-motion probe", "condition": "Raw CDP reduced-motion probe", "findingIds": [] }, { "type": "dom", "path": "evidence/home-mobile.json", "caption": "Raw CDP mobile probe", "condition": "Raw CDP mobile probe", "findingIds": [ "f-input", "f-a11y-name" ] }, { "type": "dom", "path": "evidence/quote-live.json", "caption": "Raw CDP quote probe", "condition": "Raw CDP quote probe", "findingIds": [ "f-overflow" ] }, { "type": "dom", "path": "evidence/news-live.json", "caption": "Raw CDP news probe", "condition": "Raw CDP news probe", "findingIds": [] }, { "type": "discoverability", "path": "evidence/discoverability.json", "caption": "Raw server/no-JS comparison; consent destination observed", "condition": "Raw server/no-JS comparison; consent destination observed", "findingIds": [ "f-discovery", "f-resilience" ] }, { "type": "screenshot", "path": "evidence/discoverability-rendered.png", "caption": "Fresh-browser consent destination", "condition": "Fresh-browser consent destination", "findingIds": [ "f-discovery" ] }, { "type": "screenshot", "path": "evidence/discoverability-crawler.png", "caption": "No-JS crawler consent destination", "condition": "No-JS crawler consent destination", "findingIds": [ "f-discovery", "f-resilience" ] }, { "type": "other", "path": "evidence/memory-metrics.json", "caption": "Performance metrics before/after 10 menu cycles", "condition": "Performance metrics before/after 10 menu cycles", "findingIds": [ "f-memory" ] }, { "type": "other", "path": "evidence/cookies.json", "caption": "Cookies after Reject all", "condition": "Cookies after Reject all", "findingIds": [ "f-privacy", "f-security" ] }, { "type": "other", "path": "evidence/robots.txt", "caption": "robots.txt", "condition": "robots.txt", "findingIds": [] }, { "type": "other", "path": "evidence/sitemap.xml", "caption": "sitemap response body (HTTP 429)", "condition": "sitemap response body (HTTP 429)", "findingIds": [ "f-discovery" ] }, { "type": "other", "path": "evidence/guidance-retrieved.md", "caption": "Pinned Modern Web Guidance retrieved up front", "condition": "Pinned Modern Web Guidance retrieved up front", "findingIds": [] }, { "type": "other", "path": "evidence/guidance-searches.jsonl", "caption": "Per-principle Modern Web Guidance searches", "condition": "Per-principle Modern Web Guidance searches", "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": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "Separate light and dark emulation produced usable, intentionally retinted surfaces: body changed from rgb(255,255,255)/rgb(35,42,49) to rgb(20,24,28)/rgb(227,227,227), with color-scheme matching each preference.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-light.png", "evidence/home-dark.png", "evidence/home-reduced.json" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-reduced-motion", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "Under prefers-reduced-motion: reduce, the homepage reported no active animations after settling and preserved all content.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-light.png", "evidence/home-dark.png", "evidence/home-reduced.json" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-contrast", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "The prefers-contrast: more capture preserved readable text, controls and market colors without clipping or disappearance.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-light.png", "evidence/home-dark.png", "evidence/home-contrast.png" ] }, { "principleId": "implement-natural-interactions", "checkId": "view-transitions", "status": "issues", "confidence": "high", "method": "Raw CDP screenshots, DOM/computed-style/network/performance probe across representative paths", "evidence": "DOM/performance probe confirms the View Transition API is available, but no active transitions were observed and navigation between the homepage and quote/news documents used ordinary full-document swaps.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-live.json" ], "findingIds": [ "f-nav" ] }, { "principleId": "implement-natural-interactions", "checkId": "scroll-driven-animations", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from route and interaction recon", "evidence": "No scroll-linked animation or scrollytelling surface was present on the representative templates.", "reason": "No scroll-linked animation or scrollytelling surface was present on the representative templates." }, { "principleId": "implement-natural-interactions", "checkId": "physical-gestures", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from route and interaction recon", "evidence": "No swipe, pull-to-reveal, carousel drag, or other gesture-driven core interaction was present.", "reason": "No swipe, pull-to-reveal, carousel drag, or other gesture-driven core interaction was present." }, { "principleId": "provide-guided-navigation", "checkId": "scroll-state-aware-chrome", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "Full-page captures show a compact, persistent navigation/search and market strip while long content scrolls, preserving orientation.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json", "evidence/home-mobile.png", "evidence/quote-live.json" ] }, { "principleId": "provide-guided-navigation", "checkId": "anchored-positioning", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from route and interaction recon", "evidence": "No tooltip or edge-sensitive anchored transient overlay was required in the representative states.", "reason": "No tooltip or edge-sensitive anchored transient overlay was required in the representative states." }, { "principleId": "provide-guided-navigation", "checkId": "directs-attention", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "Homepage and quote screenshots use descriptive section headings, active quote identity and directional navigation labels to maintain orientation.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json", "evidence/home-mobile.png", "evidence/quote-live.json" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "no-intrusive-interruptions", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "After the explicit consent decision, no full-viewport popup or interstitial obscured finance content on the three representative templates.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json", "evidence/home-mobile.png", "evidence/quote-live.json" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "semantic-dismissible-primitives", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "DOM inspection found a native dialog element and no ad-hoc full-screen overlay in the settled representative states.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json", "evidence/home-mobile.png", "evidence/quote-live.json" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "reduced-chrome", "status": "issues", "confidence": "high", "method": "Raw CDP screenshots, DOM/computed-style/network/performance probe across representative paths", "evidence": "The 780px desktop screenshot is 4,458px tall and devotes a persistent right rail to repeated tickers, events, portfolio prompts and dock controls while the main feed also includes advertising and large empty/error regions.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-live.png" ], "findingIds": [ "f-clutter" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "responsive-no-horizontal-scroll", "status": "issues", "confidence": "high", "method": "Raw CDP screenshots, DOM/computed-style/network/performance probe across representative paths", "evidence": "The quote probe measured scrollWidth 792px at an innerWidth of 780px; the homepage and news templates measured no overflow.", "pathIds": [ "home", "quote" ], "artifacts": [ "evidence/quote-live.json", "evidence/quote-live.png" ], "findingIds": [ "f-overflow" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "component-level-responsiveness", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "CSS inspection counted 28 container-query/container-type rules on the homepage and the mobile capture reflowed the desktop columns into one readable column.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json", "evidence/home-mobile.png", "evidence/quote-live.json" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "input-modality-aware", "status": "issues", "confidence": "high", "method": "Raw CDP screenshots, DOM/computed-style/network/performance probe across representative paths", "evidence": "The first focused control in dark mode had a 1px rgb(16,16,16) auto outline against a rgb(20,24,28) page, and desktop probes found 21 controls below 24px in at least one dimension. The mobile market selector is only 18px high.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-live.json", "evidence/home-mobile.json", "evidence/home-dark.png" ], "findingIds": [ "f-input" ] }, { "principleId": "support-core-task-success", "checkId": "clear-purpose-and-primary-action", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "First-view screenshots clearly identify Yahoo Finance, expose search, market status and the lead finance story without ambiguous generic calls to action.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json", "evidence/home-mobile.png", "evidence/quote-live.json" ] }, { "principleId": "support-core-task-success", "checkId": "primary-flow-completion", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "The home-to-AAPL quote journey completed through a real crawlable link and loaded a labelled quote, chart, news, statistics and company information.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json", "evidence/home-mobile.png", "evidence/quote-live.json" ] }, { "principleId": "support-core-task-success", "checkId": "clear-system-state-and-recovery", "status": "issues", "confidence": "high", "method": "Raw CDP screenshots, DOM/computed-style/network/performance probe across representative paths", "evidence": "Homepage screenshots show “We’re unable to load stories right now.” under More News, followed by a large empty region, with no Retry or alternate path.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-live.png", "evidence/home-mobile.png" ], "findingIds": [ "f-flow-recovery" ] }, { "principleId": "be-fast-and-stable", "checkId": "good-core-web-vitals", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "Raw Performance metrics on the settled light page show first meaningful paint about 0.75s after navigation start and total task duration about 1.05s; no visible load shift was present in the capture.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json", "evidence/home-mobile.png", "evidence/quote-live.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "visual-stability", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "All visible content images had computed dimensions and the responsive captures showed reserved card/media geometry without visible overlap or late-banner displacement.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json", "evidence/home-mobile.png", "evidence/quote-live.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-main-thread", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "Performance.getMetrics reported about 0.09s script duration and about 1.05s cumulative task duration for the measured load, with no Runtime exceptions.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json", "evidence/home-mobile.png", "evidence/quote-live.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-resource-delivery", "status": "issues", "confidence": "high", "method": "Raw CDP screenshots, DOM/computed-style/network/performance probe across representative paths", "evidence": "Raw CDP recorded 330 requests and about 2.95 MB of content-length-labelled responses on the homepage. Large scripts included ~201 KB Google ads, ~170 KB GTM, ~138 KB video player and ~117 KB dock code.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-light.json" ], "findingIds": [ "f-network" ] }, { "principleId": "be-fast-and-stable", "checkId": "trim-unused-and-duplicate-code", "status": "issues", "confidence": "high", "method": "Raw CDP screenshots, DOM/computed-style/network/performance probe across representative paths", "evidence": "Raw CDP recorded 330 requests and about 2.95 MB of content-length-labelled responses on the homepage. Large scripts included ~201 KB Google ads, ~170 KB GTM, ~138 KB video player and ~117 KB dock code.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-light.json" ], "findingIds": [ "f-network" ] }, { "principleId": "be-inclusive", "checkId": "names-roles-labels", "status": "issues", "confidence": "high", "method": "Raw CDP screenshots, DOM/computed-style/network/performance probe across representative paths", "evidence": "The mobile DOM probe found the visible 320x32 search INPUT had no aria-label; its placeholder is visible text but is not a durable label.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-mobile.json" ], "findingIds": [ "f-a11y-name" ] }, { "principleId": "be-inclusive", "checkId": "sufficient-contrast", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "Light, dark and increased-contrast screenshots preserve strong foreground/background separation for body copy, headings and market indicators.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json", "evidence/home-mobile.png", "evidence/quote-live.json" ] }, { "principleId": "be-inclusive", "checkId": "structure-and-focus", "status": "issues", "confidence": "high", "method": "Raw CDP screenshots, DOM/computed-style/network/performance probe across representative paths", "evidence": "The first focused control in dark mode had a 1px rgb(16,16,16) auto outline against a rgb(20,24,28) page, and desktop probes found 21 controls below 24px in at least one dimension. The mobile market selector is only 18px high.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-live.json", "evidence/home-mobile.json", "evidence/home-dark.png" ], "findingIds": [ "f-input" ] }, { "principleId": "be-inclusive", "checkId": "legible-text", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "Desktop and mobile captures show readable line lengths, clear typographic hierarchy and no clipped article copy.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json", "evidence/home-mobile.png", "evidence/quote-live.json" ] }, { "principleId": "be-inclusive", "checkId": "zoom-reflow-targets-and-media", "status": "issues", "confidence": "high", "method": "Raw CDP screenshots, DOM/computed-style/network/performance probe across representative paths", "evidence": "The first focused control in dark mode had a 1px rgb(16,16,16) auto outline against a rgb(20,24,28) page, and desktop probes found 21 controls below 24px in at least one dimension. The mobile market selector is only 18px high.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-live.json", "evidence/home-mobile.json", "evidence/home-dark.png" ], "findingIds": [ "f-input" ] }, { "principleId": "follow-best-practices", "checkId": "no-console-errors", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "Runtime.exceptionThrown recorded zero uncaught exceptions on home, news and quote templates.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json", "evidence/quote-live.json" ] }, { "principleId": "follow-best-practices", "checkId": "sound-document-and-assets", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "The pages declare en-US and viewport metadata; inspected content images use WebP transforms, responsive 2x sources, meaningful alt text and correct displayed aspect ratios.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json", "evidence/quote-live.json" ] }, { "principleId": "follow-best-practices", "checkId": "browser-platform-hygiene", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "The representative pages loaded over modern h2 with no Runtime exceptions, no permission prompt on load and no observed paste-prevention behavior.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json", "evidence/quote-live.json" ] }, { "principleId": "be-discoverable", "checkId": "title-and-description", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "Home, news and AAPL quote pages each expose descriptive titles and meta descriptions matched to visible content.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json", "evidence/robots.txt" ] }, { "principleId": "be-discoverable", "checkId": "crawlable-and-mobile-friendly", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "The page has a viewport meta, 149/150 inspected links were ordinary href links, mobile width was 360px with no overflow, and robots.txt was reachable.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json", "evidence/robots.txt" ] }, { "principleId": "be-discoverable", "checkId": "canonical-and-indexing-signals", "status": "issues", "confidence": "high", "method": "Raw CDP screenshots, DOM/computed-style/network/performance probe across representative paths", "evidence": "The discoverability primitive fetched 111,469 bytes but both browser and no-JS crawler resolved to consent.yahoo.com and saw “Your privacy choices”, not Yahoo Finance content. sitemap.xml also returned HTTP 429 during recon.", "pathIds": [ "home" ], "artifacts": [ "evidence/discoverability.json", "evidence/discoverability-rendered.png", "evidence/discoverability-crawler.png", "evidence/sitemap.xml" ], "findingIds": [ "f-discovery" ] }, { "principleId": "be-discoverable", "checkId": "structured-and-shareable-metadata", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "The homepage exposes one JSON-LD block and five Open Graph properties; all representative pages expose five Open Graph properties aligned with their titles.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json", "evidence/robots.txt" ] }, { "principleId": "be-private-and-secure", "checkId": "secure-transport-and-headers", "status": "issues", "confidence": "high", "method": "Raw CDP screenshots, DOM/computed-style/network/performance probe across representative paths", "evidence": "The finance document has HSTS, nosniff, SAMEORIGIN and CSP, but script-src permits unsafe-inline and unsafe-eval; Referrer-Policy is no-referrer-when-downgrade; the PRF cookie was observed without Secure.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-light.json", "evidence/cookies.json" ], "findingIds": [ "f-security" ] }, { "principleId": "be-private-and-secure", "checkId": "data-minimisation-and-third-parties", "status": "issues", "confidence": "high", "method": "Raw CDP screenshots, DOM/computed-style/network/performance probe across representative paths", "evidence": "After explicitly selecting Reject all, raw CDP still observed 10 third-party origins including Google Ads, Google Tag Manager, Google Analytics, Comscore, Chartbeat and Pushly/CDN services across roughly 330 requests.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-light.json", "evidence/cookies.json" ], "findingIds": [ "f-privacy" ] }, { "principleId": "be-private-and-secure", "checkId": "in-context-permissions-and-modern-auth", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from route and interaction recon", "evidence": "No browser permission prompt or authenticated sign-in implementation was exercised in the public, signed-out scope.", "reason": "No browser permission prompt or authenticated sign-in implementation was exercised in the public, signed-out scope." }, { "principleId": "be-private-and-secure", "checkId": "defensive-browser-policies", "status": "issues", "confidence": "high", "method": "Raw CDP screenshots, DOM/computed-style/network/performance probe across representative paths", "evidence": "The finance document has HSTS, nosniff, SAMEORIGIN and CSP, but script-src permits unsafe-inline and unsafe-eval; Referrer-Policy is no-referrer-when-downgrade; the PRF cookie was observed without Secure.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-light.json", "evidence/cookies.json" ], "findingIds": [ "f-security" ] }, { "principleId": "be-resilient", "checkId": "progressive-enhancement", "status": "issues", "confidence": "high", "method": "Raw CDP screenshots, DOM/computed-style/network/performance probe across representative paths", "evidence": "The no-JS crawler and fresh browser both resolved to a consent document whose content tokens are privacy controls rather than finance stories, quotes or navigation.", "pathIds": [ "home" ], "artifacts": [ "evidence/discoverability.json", "evidence/discoverability-crawler.png" ], "findingIds": [ "f-resilience" ] }, { "principleId": "be-resilient", "checkId": "resilient-runtime-behaviour", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "Menus and side panels remained within both 360px mobile and 780px desktop captures; route loads produced no Runtime exceptions.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json", "evidence/home-mobile.png", "evidence/quote-live.json" ] }, { "principleId": "be-resilient", "checkId": "offline-and-installable", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from route and interaction recon", "evidence": "Live financial quotes and news are intrinsically online; offline installation was not treated as a core requirement despite a manifest being linked.", "reason": "Live financial quotes and news are intrinsically online; offline installation was not treated as a core requirement despite a manifest being linked." }, { "principleId": "be-resilient", "checkId": "network-and-http-failure-states", "status": "issues", "confidence": "high", "method": "Raw CDP screenshots, DOM/computed-style/network/performance probe across representative paths", "evidence": "Homepage screenshots show “We’re unable to load stories right now.” under More News, followed by a large empty region, with no Retry or alternate path.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-live.png", "evidence/home-mobile.png" ], "findingIds": [ "f-flow-recovery" ] }, { "principleId": "be-internationalised", "checkId": "lang-dir-and-logical-properties", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "All representative pages declare lang=en-US; CSS inspection found 61-71 logical-property rules and the layouts avoid fixed reading-direction assumptions in visible content.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json" ] }, { "principleId": "be-internationalised", "checkId": "locale-aware-data", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "Visible US-market prices, percentages, dates and event times are consistently locale-formatted in the en-US document.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json" ] }, { "principleId": "be-internationalised", "checkId": "time-zone-correctness", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "Economic events visibly identify locale/region and show explicit times, while the document locale is en-US.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json" ] }, { "principleId": "be-trustworthy", "checkId": "no-dark-patterns", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "The consent screen gives Accept all and Reject all equal visual weight, plus Manage privacy settings; the settled finance page keeps privacy settings reachable in the footer.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json", "evidence/home-mobile.png", "evidence/quote-live.json" ] }, { "principleId": "be-trustworthy", "checkId": "humane-error-handling", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from route and interaction recon", "evidence": "The inspected public journey had no data-entry form submission; search was navigation rather than a validation-heavy form.", "reason": "The inspected public journey had no data-entry form submission; search was navigation rather than a validation-heavy form." }, { "principleId": "be-trustworthy", "checkId": "trustworthy-input-assistance", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from route and interaction recon", "evidence": "No address, payment, sign-up or sign-in data-entry form was part of the public representative flow.", "reason": "No address, payment, sign-up or sign-in data-entry form was part of the public representative flow." }, { "principleId": "be-trustworthy", "checkId": "safe-commercial-and-account-flows", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from route and interaction recon", "evidence": "No checkout, subscription purchase, or authenticated account-management flow was entered in the signed-out audit.", "reason": "No checkout, subscription purchase, or authenticated account-management flow was entered in the signed-out audit." }, { "principleId": "be-sustainable", "checkId": "optimised-assets", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "Inspected story images use Yahoo WebP resizing URLs and responsive 2x srcsets; the mobile hero is delivered at a matching 656px intrinsic width for 328px display.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json", "evidence/home-mobile.png", "evidence/quote-live.json" ] }, { "principleId": "be-sustainable", "checkId": "no-wasteful-work", "status": "issues", "confidence": "high", "method": "Raw CDP screenshots, DOM/computed-style/network/performance probe across representative paths", "evidence": "The homepage made about 330 requests for ~2.95 MB and contacted 10 third-party origins; large ad, analytics and video-player scripts load before the user asks to play media.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-light.json" ], "findingIds": [ "f-sustainability" ] }, { "principleId": "be-sustainable", "checkId": "third-party-and-media-budget", "status": "issues", "confidence": "high", "method": "Raw CDP screenshots, DOM/computed-style/network/performance probe across representative paths", "evidence": "The homepage made about 330 requests for ~2.95 MB and contacted 10 third-party origins; large ad, analytics and video-player scripts load before the user asks to play media.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-light.json" ], "findingIds": [ "f-sustainability" ] }, { "principleId": "be-agent-ready", "checkId": "structured-agent-capabilities", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from route and interaction recon", "evidence": "WebMCP is emerging and no declared agent-facing transaction surface was present in the public scope.", "reason": "WebMCP is emerging and no declared agent-facing transaction surface was present in the public scope." }, { "principleId": "be-agent-ready", "checkId": "on-device-inference", "status": "not-applicable", "confidence": "high", "method": "Applicability judgement from route and interaction recon", "evidence": "No user task in the inspected public pages required on-device generation or summarisation.", "reason": "No user task in the inspected public pages required on-device generation or summarisation." }, { "principleId": "be-memory-efficient", "checkId": "no-leak-under-repeated-interaction", "status": "issues", "confidence": "high", "method": "Raw CDP screenshots, DOM/computed-style/network/performance probe across representative paths", "evidence": "Across 10 menu open/close cycles, Performance.getMetrics increased JSEventListeners by 53, Nodes by 334 and JSHeapUsedSize by 9,622,872 bytes; no documents or frames were added.", "pathIds": [ "home" ], "artifacts": [ "evidence/memory-metrics.json" ], "findingIds": [ "f-memory" ] }, { "principleId": "be-memory-efficient", "checkId": "bounded-footprint", "status": "pass", "confidence": "high", "method": "Raw CDP screenshots plus DOM, CSS, network, metadata and performance probes across home, news, quote and emulated conditions", "evidence": "Before interaction, the measured page used about 35MB JS heap and 15,206 DOM nodes; substantial but proportionate to a live dashboard with feed, quote widgets and ads.", "pathIds": [ "home", "news", "quote" ], "artifacts": [ "evidence/home-live.json", "evidence/home-mobile.png", "evidence/quote-live.json" ] }, { "principleId": "be-memory-efficient", "checkId": "no-detached-dom-or-unbounded-listeners", "status": "issues", "confidence": "high", "method": "Raw CDP screenshots, DOM/computed-style/network/performance probe across representative paths", "evidence": "Across 10 menu open/close cycles, Performance.getMetrics increased JSEventListeners by 53, Nodes by 334 and JSHeapUsedSize by 9,622,872 bytes; no documents or frames were added.", "pathIds": [ "home" ], "artifacts": [ "evidence/memory-metrics.json" ], "findingIds": [ "f-memory" ] } ], "principleOutcomes": [ { "principleId": "respect-user-preferences", "expectation": "default", "status": "pass" }, { "principleId": "implement-natural-interactions", "expectation": "default", "status": "issues", "findingIds": [ "f-nav" ] }, { "principleId": "provide-guided-navigation", "expectation": "default", "status": "pass" }, { "principleId": "maximize-content-reduce-noise", "expectation": "default", "status": "issues", "findingIds": [ "f-clutter" ] }, { "principleId": "adapt-to-the-form-factor", "expectation": "default", "status": "issues", "findingIds": [ "f-overflow", "f-input" ] }, { "principleId": "support-core-task-success", "expectation": "default", "status": "issues", "findingIds": [ "f-flow-recovery" ] }, { "principleId": "be-fast-and-stable", "expectation": "default", "status": "issues", "findingIds": [ "f-network" ] }, { "principleId": "be-inclusive", "expectation": "default", "status": "issues", "findingIds": [ "f-a11y-name", "f-input" ] }, { "principleId": "follow-best-practices", "expectation": "default", "status": "pass" }, { "principleId": "be-discoverable", "expectation": "default", "status": "issues", "findingIds": [ "f-discovery" ] }, { "principleId": "be-private-and-secure", "expectation": "default", "status": "issues", "findingIds": [ "f-security", "f-privacy" ] }, { "principleId": "be-resilient", "expectation": "contextual", "status": "issues", "findingIds": [ "f-resilience", "f-flow-recovery" ] }, { "principleId": "be-internationalised", "expectation": "contextual", "status": "pass" }, { "principleId": "be-trustworthy", "expectation": "default", "status": "pass" }, { "principleId": "be-sustainable", "expectation": "contextual", "status": "issues", "findingIds": [ "f-sustainability" ] }, { "principleId": "be-agent-ready", "expectation": "contextual", "status": "not-applicable", "reason": "WebMCP is emerging and no declared agent-facing transaction surface was present in the public scope. No user task in the inspected public pages required on-device generation or summarisation." }, { "principleId": "be-memory-efficient", "expectation": "default", "status": "issues", "findingIds": [ "f-memory" ] } ], "paths": [ { "id": "home", "description": "Homepage: primary market/news overview and search entry; desktop, mobile, light, dark, reduced-motion and increased-contrast conditions.", "url": "https://finance.yahoo.com/", "conditions": [ "desktop 780px", "mobile 360x800", "prefers-color-scheme light/dark", "prefers-reduced-motion reduce", "prefers-contrast more", "Reject all consent" ], "result": "issues" }, { "id": "quote", "description": "AAPL quote/detail archetype representing instrument pages and the core home-to-quote journey.", "url": "https://finance.yahoo.com/quote/AAPL/", "conditions": [ "desktop 780px", "signed out" ], "result": "issues" }, { "id": "news", "description": "Finance news listing archetype representing section feeds.", "url": "https://finance.yahoo.com/news/", "conditions": [ "desktop 780px", "signed out" ], "result": "issues" }, { "id": "crawler", "description": "Fresh no-cookie and no-JavaScript discovery path, including robots.txt and sitemap.xml.", "url": "https://finance.yahoo.com/", "conditions": [ "no existing consent cookie", "JavaScript disabled crawler" ], "result": "issues" } ], "findings": [ { "severity": "low", "summary": "Route changes are abrupt rather than continuity-preserving.", "evidence": "DOM/performance probe confirms the View Transition API is available, but no active transitions were observed and navigation between the homepage and quote/news documents used ordinary full-document swaps.", "suggestedFix": "Use same-document or cross-document View Transitions for high-frequency navigation, with reduced-motion handling.", "guidanceId": "cross-document-transitions", "principleId": "implement-natural-interactions", "principleCheckId": "view-transitions", "artifacts": [ "evidence/home-live.json" ], "id": "f-nav", "confidence": "high", "effort": "small", "pathId": "home", "url": "https://finance.yahoo.com/" }, { "severity": "medium", "summary": "Dense desktop chrome competes with primary finance content.", "evidence": "The 780px desktop screenshot is 4,458px tall and devotes a persistent right rail to repeated tickers, events, portfolio prompts and dock controls while the main feed also includes advertising and large empty/error regions.", "suggestedFix": "Reduce duplicate market chrome, defer secondary panels, and keep the primary story/quote task visually dominant.", "guidanceId": "defer-rendering-heavy-content", "principleId": "maximize-content-reduce-noise", "principleCheckId": "reduced-chrome", "artifacts": [ "evidence/home-live.png" ], "id": "f-clutter", "confidence": "high", "effort": "medium", "pathId": "home", "url": "https://finance.yahoo.com/" }, { "severity": "low", "summary": "The quote template has horizontal overflow.", "evidence": "The quote probe measured scrollWidth 792px at an innerWidth of 780px; the homepage and news templates measured no overflow.", "suggestedFix": "Replace the overflowing fixed/intrinsic width in the quote template with fluid sizing and min-width:0 on grid/flex children.", "guidanceId": "css-layout", "principleId": "adapt-to-the-form-factor", "principleCheckId": "responsive-no-horizontal-scroll", "artifacts": [ "evidence/quote-live.json", "evidence/quote-live.png" ], "id": "f-overflow", "confidence": "high", "effort": "small", "pathId": "quote", "url": "https://finance.yahoo.com/quote/AAPL/" }, { "severity": "high", "summary": "Keyboard focus and control sizing are not consistently perceivable.", "evidence": "The first focused control in dark mode had a 1px rgb(16,16,16) auto outline against a rgb(20,24,28) page, and desktop probes found 21 controls below 24px in at least one dimension. The mobile market selector is only 18px high.", "suggestedFix": "Provide a high-contrast :focus-visible ring and bring interactive targets to at least 24x24 CSS px, preferably 44x44 for primary touch controls.", "guidanceId": "accessibility", "principleId": "adapt-to-the-form-factor", "principleCheckId": "input-modality-aware", "artifacts": [ "evidence/home-live.json", "evidence/home-mobile.json", "evidence/home-dark.png" ], "id": "f-input", "confidence": "high", "effort": "large", "pathId": "home", "url": "https://finance.yahoo.com/" }, { "severity": "medium", "summary": "A failed content state provides no recovery action.", "evidence": "Homepage screenshots show “We’re unable to load stories right now.” under More News, followed by a large empty region, with no Retry or alternate path.", "suggestedFix": "Add a visible retry action, concise failure context, and retain previously available/stale stories when safe.", "guidanceId": "persistent-toast-notifications", "principleId": "support-core-task-success", "principleCheckId": "clear-system-state-and-recovery", "artifacts": [ "evidence/home-live.png", "evidence/home-mobile.png" ], "id": "f-flow-recovery", "confidence": "high", "effort": "medium", "pathId": "home", "url": "https://finance.yahoo.com/" }, { "severity": "high", "summary": "The entry page ships a large, script-heavy request graph.", "evidence": "Raw CDP recorded 330 requests and about 2.95 MB of content-length-labelled responses on the homepage. Large scripts included ~201 KB Google ads, ~170 KB GTM, ~138 KB video player and ~117 KB dock code.", "suggestedFix": "Delay non-critical ads, analytics, video and dock modules until intent/visibility; split route code and remove duplicate or unused third-party work.", "guidanceId": "identify-heavy-scripts", "principleId": "be-fast-and-stable", "principleCheckId": "trim-unused-and-duplicate-code", "artifacts": [ "evidence/home-light.json" ], "id": "f-network", "confidence": "high", "effort": "large", "pathId": "home", "url": "https://finance.yahoo.com/" }, { "severity": "medium", "summary": "The primary search input lacks a programmatic accessible name in the inspected DOM.", "evidence": "The mobile DOM probe found the visible 320x32 search INPUT had no aria-label; its placeholder is visible text but is not a durable label.", "suggestedFix": "Associate a persistent