{ "url": "https://tw.news.yahoo.com", "auditedAt": "2026-07-19T07:37:46.783Z", "mode": "report", "status": "completed", "statusDetail": "58/58 atomic checks recorded with no blocked or not-run rows. Remote critique only; no source was supplied.", "page": { "appType": "hybrid", "framework": "Mixed server-rendered Yahoo templates; archive appears Next.js", "notes": "Public Traditional Chinese news portal with home feed, archive/listing, article and poll templates. A first-visit consent redirect was rejected before content evidence capture." }, "evidenceUsed": [ "raw-CDP screenshots", "raw-CDP evaluate probes", "raw-CDP Runtime/Log events", "PerformanceObserver (FCP/LCP/CLS/long tasks)", "CDP Network requests/headers/cookies", "repeated-interaction memory metrics", "raw HTTP HTML/headers/robots/sitemap/404", "Modern Web Guidance 0.0.172 search" ], "guidanceConsulted": [ "component-specific-light-dark-theme", "dark-mode", "css", "accessibility", "directional-navigation-transitions", "interactive-content-reveal", "adapt-scrollbar-to-contrast-preferences", "customize-scrollbar-color-and-thickness", "same-document-transitions", "cross-document-transitions", "group-element-transitions", "parallax-scroll-effects", "scroll-entry-exit-effects", "carousel-slide-effects", "animate-to-intrinsic-sizes", "scrollability-affordance-hints", "scroll-snap-state-sync", "scroll-position-aware-elements", "position-aware-tooltips", "interest-triggered-tooltips", "anchor-positioning-tab-underline", "navigation-drawer", "carousel-snap-highlights", "light-dismiss-a-dialog", "html", "declarative-dialog-popover-control", "branded-select-styling", "interactive-content-in-3d-scenes", "apply-webgl-shaders", "complex-shapes", "fluid-scaling", "css-layout", "size-aware-styling", "design-token-reactivity", "form-fields-automatically-fit-contents", "forms", "improve-text-layout-and-legibility", "persistent-toast-notifications", "persistent-app-tours", "declarative-button-actions", "accessible-error-announcement", "required-field-feedback", "validate-input-after-interaction", "performance", "optimize-preload-priority", "optimize-script-priority", "visually-stable-font-fallbacks", "visually-stable-mixed-fonts", "break-up-long-tasks", "identify-heavy-scripts", "optimize-image-priority", "expose-canvas-content-to-browser-features", "highlight-text-ranges", "move-dom-element-without-losing-state", "pull-to-reveal", "persistent-top-layer-ui", "precise-text-alignment", "security", "agentic-forms", "deliver-optimized-decorative-images", "shaped-cutouts", "resolution-optimized-pseudo-elements", "language-detection", "summarizer", "search-hidden-content", "language-model", "passkey-management", "privacy", "passkey-authentication", "batch-analytics-events", "full-session-analytics", "calculate-total-foreground-time", "passkey-conditional-create", "passkey-reauthentication", "passkeys", "flicker-free-client-side-ab-testing", "consistent-cross-document-transitions", "resilient-context-menus-and-nested-dropdowns", "translator", "support-global-calendar-systems", "manage-recurring-intervals", "capture-location-agnostic-data", "coordinate-global-events", "calculate-event-differentials", "swipe-to-remove", "select-menu-interaction", "autofill-address-form", "autofill-payment-form", "autofill-sign-up-form", "deprioritize-background-fetches", "efficient-background-processing", "agentic-javascript-tools", "webmcp", "faster-spa-view-transitions", "calculate-with-intrinsic-sizes", "sequence-distributed-events" ], "artifacts": [ { "type": "screenshot", "path": "evidence/home-desktop.png", "caption": "home desktop" }, { "type": "screenshot", "path": "evidence/home.png", "caption": "home" }, { "type": "screenshot", "path": "evidence/archive-mobile-dark.png", "caption": "archive mobile dark" }, { "type": "screenshot", "path": "evidence/article.png", "caption": "article" }, { "type": "screenshot", "path": "evidence/poll.png", "caption": "poll" }, { "type": "dom", "path": "evidence/home-probe.json", "caption": "home probe" }, { "type": "dom", "path": "evidence/archive-mobile-dark-probe.json", "caption": "archive mobile dark probe" }, { "type": "dom", "path": "evidence/article-probe.json", "caption": "article probe" }, { "type": "dom", "path": "evidence/poll-probe.json", "caption": "poll probe" }, { "type": "other", "path": "evidence/perf-home.json", "caption": "perf home" }, { "type": "other", "path": "evidence/memory-metrics.json", "caption": "memory metrics" }, { "type": "other", "path": "evidence/network-session.json", "caption": "network session" }, { "type": "dom", "path": "evidence/yheaders", "caption": "yheaders" }, { "type": "dom", "path": "evidence/yhome.html", "caption": "yhome" }, { "type": "dom", "path": "evidence/yrobots.txt", "caption": "yrobots" }, { "type": "other", "path": "evidence/ysitemap.xml", "caption": "ysitemap" }, { "type": "dom", "path": "evidence/y404.html", "caption": "y404" } ], "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": "Visual screenshot plus raw-CDP DOM/network/performance probe on representative templates.", "evidence": "The CDP probe reports prefers-color-scheme: dark=true while the homepage remains light and the root computed color-scheme is normal. The archive template does switch to color-scheme: dark, showing inconsistent template support.", "pathIds": [ "home" ], "artifacts": [ "evidence/home.png", "evidence/home-probe.json", "evidence/archive-mobile-dark.png" ], "findingIds": [ "F01" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-reduced-motion", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "Under prefers-reduced-motion: reduce the archive reported the preference active and zero running document animations.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-contrast", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "Under prefers-contrast: more with dark preference, text, navigation underline, images and controls remained clearly visible in the 360px archive screenshot.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "implement-natural-interactions", "checkId": "view-transitions", "status": "issues", "confidence": "high", "method": "Visual screenshot plus raw-CDP DOM/network/performance probe on representative templates.", "evidence": "CSS/DOM probes found no view-transition usage on home, archive, article, or poll templates, and all are multi-page navigations.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-probe.json", "evidence/article-probe.json" ], "findingIds": [ "F02" ] }, { "principleId": "implement-natural-interactions", "checkId": "scroll-driven-animations", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "CSS probes found no scroll timelines and the page had no scroll-linked visual effects, so it does not use main-thread scroll animation.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "implement-natural-interactions", "checkId": "physical-gestures", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "Representative pages use native scrolling and native radio/button controls; no custom pointer gesture layer or scroll fighting was observed.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "provide-guided-navigation", "checkId": "scroll-state-aware-chrome", "status": "issues", "confidence": "high", "method": "Visual screenshot plus raw-CDP DOM/network/performance probe on representative templates.", "evidence": "The archive is 6,150 CSS px tall, but probes found no scroll-state/container-query implementation or progress affordance; the header remains static navigation chrome.", "pathIds": [ "home" ], "artifacts": [ "evidence/archive-mobile-dark-probe.json" ], "findingIds": [ "F03" ] }, { "principleId": "provide-guided-navigation", "checkId": "anchored-positioning", "status": "not-applicable", "confidence": "high", "method": "Recon and representative-path DOM inspection for the surface named by this check.", "evidence": "No tooltip, transient popover, or edge-positioned menu was present on the representative paths.", "reason": "No tooltip, transient popover, or edge-positioned menu was present on the representative paths." }, { "principleId": "provide-guided-navigation", "checkId": "directs-attention", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "Selected navigation is marked with a purple underline; article breadcrumbs and heading hierarchy clearly orient the reader.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "no-intrusive-interruptions", "status": "issues", "confidence": "high", "method": "Visual screenshot plus raw-CDP DOM/network/performance probe on representative templates.", "evidence": "The first-load screenshot shows the entire viewport replaced by consent.yahoo.com; users must choose Accept all, Reject all, or manage settings before seeing content.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-desktop.png" ], "findingIds": [ "F04" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "semantic-dismissible-primitives", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "The article exposes a native dialog element and the poll uses native radio inputs; no ad-hoc modal div was observed on covered content states.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "reduced-chrome", "status": "issues", "confidence": "high", "method": "Visual screenshot plus raw-CDP DOM/network/performance probe on representative templates.", "evidence": "The homepage screenshot gives most of the viewport below two navigation rows to a four-card shopping ad, and the article inserts a banner directly above and below the lead.", "pathIds": [ "home" ], "artifacts": [ "evidence/home.png", "evidence/article.png" ], "findingIds": [ "F05" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "responsive-no-horizontal-scroll", "status": "issues", "confidence": "high", "method": "Visual screenshot plus raw-CDP DOM/network/performance probe on representative templates.", "evidence": "CDP measured scrollWidth 1007 at innerWidth 780 on both home and poll and visible horizontal scrollbars in screenshots; their probes report no viewport meta content. The 360px archive template reflows correctly.", "pathIds": [ "home" ], "artifacts": [ "evidence/home.png", "evidence/home-probe.json", "evidence/poll.png", "evidence/poll-probe.json" ], "findingIds": [ "F06" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "component-level-responsiveness", "status": "issues", "confidence": "high", "method": "Visual screenshot plus raw-CDP DOM/network/performance probe on representative templates.", "evidence": "All four template probes found no @container/container-type CSS while cards appear in main, sidebar, and narrow-feed contexts.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-probe.json", "evidence/archive-mobile-dark-probe.json" ], "findingIds": [ "F07" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "input-modality-aware", "status": "issues", "confidence": "high", "method": "Visual screenshot plus raw-CDP DOM/network/performance probe on representative templates.", "evidence": "The homepage probe counted 297 visible controls below 44px in one dimension and computed the focused sample outline as none 0px; poll counted 130 undersized controls.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-probe.json", "evidence/poll-probe.json" ], "findingIds": [ "F08" ] }, { "principleId": "support-core-task-success", "checkId": "clear-purpose-and-primary-action", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "Home, archive, article and poll each expose a descriptive heading and obvious content or voting action in the captured viewport/DOM.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "support-core-task-success", "checkId": "primary-flow-completion", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "The representative reading flow reaches full article content, while the poll exposes labelled native choices and a clear vote action without a hidden required field.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "support-core-task-success", "checkId": "clear-system-state-and-recovery", "status": "issues", "confidence": "high", "method": "Visual screenshot plus raw-CDP DOM/network/performance probe on representative templates.", "evidence": "A direct request to a nonexistent news route returns HTTP 404 with an effectively empty HTML body, offering no visible explanation, search, home link, or retry path without client execution.", "pathIds": [ "home" ], "artifacts": [ "evidence/y404.html" ], "findingIds": [ "F19" ] }, { "principleId": "be-fast-and-stable", "checkId": "good-core-web-vitals", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "A consented clean-load observer measured FCP 772ms, LCP 788ms and CLS 0; no interaction latency sample was available, but two only slightly-over-50ms tasks were observed.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/perf-home.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "visual-stability", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "The clean-load layout-shift observer measured CLS 0 and captured screenshots show reserved ad regions rather than content jumps.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/perf-home.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-main-thread", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "The clean-load observer saw only two long tasks (52ms and 55ms), with FCP/LCP under 0.8s.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/perf-home.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-resource-delivery", "status": "issues", "confidence": "high", "method": "Visual screenshot plus raw-CDP DOM/network/performance probe on representative templates.", "evidence": "A clean consented load issued 188 requests including 51 scripts, 56 pings, 14 stylesheets and 17 fetches; template probes observed 459 to 815 retained resources.", "pathIds": [ "home" ], "artifacts": [ "evidence/perf-home.json", "evidence/home-probe.json", "evidence/poll-probe.json" ], "findingIds": [ "F09" ] }, { "principleId": "be-fast-and-stable", "checkId": "trim-unused-and-duplicate-code", "status": "issues", "confidence": "high", "method": "Visual screenshot plus raw-CDP DOM/network/performance probe on representative templates.", "evidence": "The homepage loaded 51 scripts and 13 distinct non-Yahoo origins, while long-lived template probes retained up to 815 resources and thousands of listeners.", "pathIds": [ "home" ], "artifacts": [ "evidence/perf-home.json", "evidence/home-probe.json" ], "findingIds": [ "F10" ] }, { "principleId": "be-inclusive", "checkId": "names-roles-labels", "status": "issues", "confidence": "high", "method": "Visual screenshot plus raw-CDP DOM/network/performance probe on representative templates.", "evidence": "The homepage probe found 10 unnamed controls, 9 empty-text links and 6 images without alt; the poll found 3 unnamed controls.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-probe.json", "evidence/poll-probe.json" ], "findingIds": [ "F11" ] }, { "principleId": "be-inclusive", "checkId": "sufficient-contrast", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "Dark mobile archive and dark article captures show high-contrast light text on near-black surfaces; light templates use dark text on white.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "be-inclusive", "checkId": "structure-and-focus", "status": "issues", "confidence": "high", "method": "Visual screenshot plus raw-CDP DOM/network/performance probe on representative templates.", "evidence": "Desktop focus computed to no outline; the homepage has duplicate H1 “Yahoo新聞”, and poll has three H1 elements including the question.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-probe.json", "evidence/poll-probe.json" ], "findingIds": [ "F12" ] }, { "principleId": "be-inclusive", "checkId": "legible-text", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "Article and archive captures show readable line lengths, clear size hierarchy and no clipped body text at the tested viewports.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "be-inclusive", "checkId": "zoom-reflow-targets-and-media", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "The 360px archive reflows without horizontal overflow and its viewport permits initial-scale=1 without disabling zoom; no required video media was present.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "follow-best-practices", "checkId": "no-console-errors", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "CDP Runtime/Log collection across all four paths found warnings but no uncaught exceptions or error-level console entries.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "follow-best-practices", "checkId": "sound-document-and-assets", "status": "issues", "confidence": "high", "method": "Visual screenshot plus raw-CDP DOM/network/performance probe on representative templates.", "evidence": "Home has 30 of 36 images without width+height and 30 legacy-format images; poll has all 43 images without dimensions and 30 legacy-format images.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-probe.json", "evidence/poll-probe.json" ], "findingIds": [ "F13" ] }, { "principleId": "follow-best-practices", "checkId": "browser-platform-hygiene", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "No permission prompt, paste prevention, deprecated-API error, or runtime exception appeared during four representative loads.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "be-discoverable", "checkId": "title-and-description", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "All four representative pages have descriptive titles and non-empty meta descriptions.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "be-discoverable", "checkId": "crawlable-and-mobile-friendly", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "All inspected anchors have href values; robots permits normal crawlers and lists sitemaps; the 360px archive is mobile-friendly.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "be-discoverable", "checkId": "canonical-and-indexing-signals", "status": "issues", "confidence": "high", "method": "Visual screenshot plus raw-CDP DOM/network/performance probe on representative templates.", "evidence": "The archive probe found no link[rel=canonical], while home, poll, and article expose canonicals and robots.txt lists multiple sitemaps.", "pathIds": [ "archive" ], "artifacts": [ "evidence/archive-mobile-dark-probe.json", "evidence/yrobots.txt", "evidence/ysitemap.xml" ], "findingIds": [ "F14" ] }, { "principleId": "be-discoverable", "checkId": "structured-and-shareable-metadata", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "Home includes WebSite JSON-LD and all captured templates expose accurate Open Graph title/description matching visible content.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "be-private-and-secure", "checkId": "secure-transport-and-headers", "status": "issues", "confidence": "high", "method": "Visual screenshot plus raw-CDP DOM/network/performance probe on representative templates.", "evidence": "Direct target response headers include HSTS, nosniff and SAMEORIGIN, but no Content-Security-Policy or Permissions-Policy; Referrer-Policy is no-referrer-when-downgrade.", "pathIds": [ "home" ], "artifacts": [ "evidence/yheaders", "evidence/network-session.json" ], "findingIds": [ "F15" ] }, { "principleId": "be-private-and-secure", "checkId": "data-minimisation-and-third-parties", "status": "issues", "confidence": "high", "method": "Visual screenshot plus raw-CDP DOM/network/performance probe on representative templates.", "evidence": "A normal home load contacted 13 non-Yahoo origins including Google Ads, Taboola, Google Tag Manager, Analytics and ScorecardResearch; 56 ping requests occurred within eight seconds.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-probe.json", "evidence/perf-home.json" ], "findingIds": [ "F16" ] }, { "principleId": "be-private-and-secure", "checkId": "in-context-permissions-and-modern-auth", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "No permission request was triggered on load; authentication was not required for the covered reading paths.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "be-private-and-secure", "checkId": "defensive-browser-policies", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "Target responses enforce HSTS, nosniff and SAMEORIGIN clickjacking protection, and cookies inspected after consent are predominantly Secure/HttpOnly where sensitive.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "be-resilient", "checkId": "progressive-enhancement", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "The raw homepage is 603KB of server-rendered HTML containing navigation, headlines and links, rather than an empty JavaScript shell.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "be-resilient", "checkId": "resilient-runtime-behaviour", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "Navigation, native controls and the article dialog rendered without clipping or uncaught runtime errors across desktop and 360px archive conditions.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "be-resilient", "checkId": "offline-and-installable", "status": "not-applicable", "confidence": "high", "method": "Recon and representative-path DOM inspection for the surface named by this check.", "evidence": "Yahoo News is a public content MPA rather than an installed application journey; installability is contextual. Core progressive enhancement is judged separately.", "reason": "Yahoo News is a public content MPA rather than an installed application journey; installability is contextual. Core progressive enhancement is judged separately." }, { "principleId": "be-resilient", "checkId": "network-and-http-failure-states", "status": "issues", "confidence": "high", "method": "Visual screenshot plus raw-CDP DOM/network/performance probe on representative templates.", "evidence": "The representative nonexistent route returns an empty 404 document body, so no-JS and constrained clients receive a blank failure state.", "pathIds": [ "home" ], "artifacts": [ "evidence/y404.html" ], "findingIds": [ "F20" ] }, { "principleId": "be-internationalised", "checkId": "lang-dir-and-logical-properties", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "Every representative document declares zh-Hant-TW; visible Traditional Chinese reading order is correct. The site is LTR and no bidirectional content defect was observed.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "be-internationalised", "checkId": "locale-aware-data", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "Dates, participant counts and relative times are presented in Taiwan-oriented Chinese formats across article, poll and archive.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "be-internationalised", "checkId": "time-zone-correctness", "status": "pass", "confidence": "medium", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "Published dates and relative times are rendered consistently for the Taiwan locale; no scheduling or cross-zone event input exists on these news paths.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "be-trustworthy", "checkId": "no-dark-patterns", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "Consent presents Accept all and Reject all with equal prominence, privacy settings remain available, and no disguised content action or forced continuity was observed.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "be-trustworthy", "checkId": "humane-error-handling", "status": "not-applicable", "confidence": "high", "method": "Recon and representative-path DOM inspection for the surface named by this check.", "evidence": "The covered search and poll controls contain no required free-text form submission to exercise; native radio labels were inspected separately.", "reason": "The covered search and poll controls contain no required free-text form submission to exercise; native radio labels were inspected separately." }, { "principleId": "be-trustworthy", "checkId": "trustworthy-input-assistance", "status": "not-applicable", "confidence": "high", "method": "Recon and representative-path DOM inspection for the surface named by this check.", "evidence": "No address, payment, sign-in, or sign-up data-entry form is part of the covered news paths; the only text field is site search.", "reason": "No address, payment, sign-in, or sign-up data-entry form is part of the covered news paths; the only text field is site search." }, { "principleId": "be-trustworthy", "checkId": "safe-commercial-and-account-flows", "status": "not-applicable", "confidence": "high", "method": "Recon and representative-path DOM inspection for the surface named by this check.", "evidence": "Checkout, subscription and account-management flows are outside this public news scope and were not presented by these paths.", "reason": "Checkout, subscription and account-management flows are outside this public news scope and were not presented by these paths." }, { "principleId": "be-sustainable", "checkId": "optimised-assets", "status": "issues", "confidence": "high", "method": "Visual screenshot plus raw-CDP DOM/network/performance probe on representative templates.", "evidence": "Home reports 30 legacy-format images and no lazy-loaded images; 30 lack dimensions. Poll reports 30 legacy images. The mobile archive is better with 30 lazy images and only one legacy image.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-probe.json", "evidence/archive-mobile-dark-probe.json", "evidence/poll-probe.json" ], "findingIds": [ "F17" ] }, { "principleId": "be-sustainable", "checkId": "no-wasteful-work", "status": "issues", "confidence": "high", "method": "Visual screenshot plus raw-CDP DOM/network/performance probe on representative templates.", "evidence": "The eight-second consented load recorded 56 Ping requests plus 17 Fetch and 13 XHR requests before the user performed a news task.", "pathIds": [ "home" ], "artifacts": [ "evidence/perf-home.json" ], "findingIds": [ "F22" ] }, { "principleId": "be-sustainable", "checkId": "third-party-and-media-budget", "status": "issues", "confidence": "high", "method": "Visual screenshot plus raw-CDP DOM/network/performance probe on representative templates.", "evidence": "The text-first homepage launches 188 requests, 51 scripts, 56 pings and 13 third-party origins before meaningful interaction.", "pathIds": [ "home" ], "artifacts": [ "evidence/perf-home.json", "evidence/home-probe.json" ], "findingIds": [ "F18" ] }, { "principleId": "be-agent-ready", "checkId": "structured-agent-capabilities", "status": "not-applicable", "confidence": "high", "method": "Recon and representative-path DOM inspection for the surface named by this check.", "evidence": "The audited public news pages expose content, not an agent-actionable transaction or productivity capability; absence of WebMCP is an emerging opportunity, not a failure.", "reason": "The audited public news pages expose content, not an agent-actionable transaction or productivity capability; absence of WebMCP is an emerging opportunity, not a failure." }, { "principleId": "be-agent-ready", "checkId": "on-device-inference", "status": "not-applicable", "confidence": "high", "method": "Recon and representative-path DOM inspection for the surface named by this check.", "evidence": "No user task on the covered pages requires on-device generation; summarisation could be an enhancement but is not required.", "reason": "No user task on the covered pages requires on-device generation; summarisation could be an enhancement but is not required." }, { "principleId": "be-memory-efficient", "checkId": "no-leak-under-repeated-interaction", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "After ten real bottom/top feed scroll cycles, JSHeapUsedSize fell from ~420MB to ~88MB and Performance Nodes fell from 20,215 to 17,369, showing release rather than monotonic retained growth.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/memory-metrics.json" ] }, { "principleId": "be-memory-efficient", "checkId": "bounded-footprint", "status": "issues", "confidence": "high", "method": "Visual screenshot plus raw-CDP DOM/network/performance probe on representative templates.", "evidence": "Post-load probes measured about 349MB JS heap on archive and 379MB on poll, 11,682 to 16,100 Nodes, and 10,789 event listeners on home.", "pathIds": [ "home" ], "artifacts": [ "evidence/archive-mobile-dark-probe.json", "evidence/poll-probe.json", "evidence/home-probe.json" ], "findingIds": [ "F21" ] }, { "principleId": "be-memory-efficient", "checkId": "no-detached-dom-or-unbounded-listeners", "status": "pass", "confidence": "high", "method": "Raw-CDP rendered DOM/computed-style, screenshot, response, or performance inspection across the representative path set.", "evidence": "Across the repeated scroll window, total Performance Nodes decreased and heap use fell substantially; no growing retained listener/timer signal was observed.", "pathIds": [ "home", "archive", "article", "poll" ], "artifacts": [ "evidence/memory-metrics.json" ] } ], "principleOutcomes": [ { "principleId": "respect-user-preferences", "expectation": "default", "status": "issues", "findingIds": [ "F01" ] }, { "principleId": "implement-natural-interactions", "expectation": "default", "status": "issues", "findingIds": [ "F02" ] }, { "principleId": "provide-guided-navigation", "expectation": "default", "status": "issues", "findingIds": [ "F03" ] }, { "principleId": "maximize-content-reduce-noise", "expectation": "default", "status": "issues", "findingIds": [ "F04", "F05" ] }, { "principleId": "adapt-to-the-form-factor", "expectation": "default", "status": "issues", "findingIds": [ "F06", "F07", "F08" ] }, { "principleId": "support-core-task-success", "expectation": "default", "status": "issues", "findingIds": [ "F19" ] }, { "principleId": "be-fast-and-stable", "expectation": "default", "status": "issues", "findingIds": [ "F09", "F10" ] }, { "principleId": "be-inclusive", "expectation": "default", "status": "issues", "findingIds": [ "F11", "F12" ] }, { "principleId": "follow-best-practices", "expectation": "default", "status": "issues", "findingIds": [ "F13" ] }, { "principleId": "be-discoverable", "expectation": "default", "status": "issues", "findingIds": [ "F14" ] }, { "principleId": "be-private-and-secure", "expectation": "default", "status": "issues", "findingIds": [ "F15", "F16" ] }, { "principleId": "be-resilient", "expectation": "contextual", "status": "issues", "findingIds": [ "F20" ] }, { "principleId": "be-internationalised", "expectation": "contextual", "status": "pass" }, { "principleId": "be-trustworthy", "expectation": "default", "status": "pass" }, { "principleId": "be-sustainable", "expectation": "contextual", "status": "issues", "findingIds": [ "F17", "F22", "F18" ] }, { "principleId": "be-agent-ready", "expectation": "contextual", "status": "not-applicable", "reason": "The audited public news pages expose content, not an agent-actionable transaction or productivity capability; absence of WebMCP is an emerging opportunity, not a failure. No user task on the covered pages requires on-device generation; summarisation could be an enhancement but is not required." }, { "principleId": "be-memory-efficient", "expectation": "default", "status": "issues", "findingIds": [ "F21" ] } ], "paths": [ { "id": "consent", "description": "First-visit privacy gate; captured because it blocks the public entry path.", "url": "https://tw.news.yahoo.com", "conditions": [ "fresh profile before consent" ], "result": "issues" }, { "id": "home", "description": "Homepage/news feed template and primary reading discovery journey.", "url": "https://tw.news.yahoo.com/", "conditions": [ "desktop", "consent rejected", "system dark preference present" ], "result": "issues" }, { "id": "archive", "description": "News archive/listing template representing dense feed browsing.", "url": "https://tw.news.yahoo.com/archive/", "conditions": [ "360x800", "prefers-color-scheme: dark", "prefers-reduced-motion: reduce", "prefers-contrast: more" ], "result": "issues" }, { "id": "article", "description": "Representative article/detail reading path selected from the live homepage.", "url": "https://tw.news.yahoo.com/%E8%8B%AF%E9%A7%A2%E8%8A%98%E6%98%AF%E4%BB%80%E9%BA%BC%EF%BC%9F%E6%B3%B0%E5%B1%B1%E3%80%81%E7%A6%8F%E5%A3%BD%E3%80%81%E7%A6%8F%E6%87%8B%E6%B2%99%E6%8B%89%E6%B2%B9%E9%A9%97%E5%87%BA%E8%87%B4%E7%99%8C%E7%89%A9%E5%93%AA%E4%BA%9B%E5%93%81%E9%A0%85%EF%BC%9F%E5%90%83%E5%88%B0%E6%80%8E%E9%BA%BC%E8%BE%A6%EF%BC%9F%E8%A9%B2%E5%A6%82%E4%BD%95%E9%80%80%E8%B2%A8%EF%BC%9F-061805447.html", "conditions": [ "desktop", "consent rejected" ], "result": "issues" }, { "id": "poll", "description": "Representative interactive voting/listing surface.", "url": "https://tw.news.yahoo.com/poll/", "conditions": [ "desktop", "native radio controls inspected" ], "result": "issues" }, { "id": "not-found", "description": "Representative HTTP 404/recovery path.", "url": "https://tw.news.yahoo.com/definitely-not-a-real-route-web-uplift-404", "conditions": [ "raw HTTP", "no JavaScript" ], "result": "issues" } ], "findings": [ { "id": "F01", "severity": "medium", "confidence": "high", "principleId": "respect-user-preferences", "principleCheckId": "respects-color-scheme", "guidanceId": "dark-mode", "guidanceCategory": "user-experience", "summary": "The homepage and poll template ignore the user’s dark preference.", "evidence": "The CDP probe reports prefers-color-scheme: dark=true while the homepage remains light and the root computed color-scheme is normal. The archive template does switch to color-scheme: dark, showing inconsistent template support.", "suggestedFix": "Declare color-scheme: light dark and apply preference-driven surface/text tokens consistently across every template.", "effort": "medium", "artifacts": [ "evidence/home.png", "evidence/home-probe.json", "evidence/archive-mobile-dark.png" ], "pathId": "home", "url": "https://tw.news.yahoo.com/" }, { "id": "F02", "severity": "low", "confidence": "high", "principleId": "implement-natural-interactions", "principleCheckId": "view-transitions", "guidanceId": "cross-document-transitions", "guidanceCategory": "user-experience", "summary": "Cross-document navigation swaps abruptly.", "evidence": "CSS/DOM probes found no view-transition usage on home, archive, article, or poll templates, and all are multi-page navigations.", "suggestedFix": "Add @view-transition { navigation: auto } with a reduced-motion fallback, then name stable shared elements selectively.", "effort": "small", "artifacts": [ "evidence/home-probe.json", "evidence/article-probe.json" ], "pathId": "home", "url": "https://tw.news.yahoo.com/" }, { "id": "F03", "severity": "low", "confidence": "high", "principleId": "provide-guided-navigation", "principleCheckId": "scroll-state-aware-chrome", "guidanceId": "scroll-position-aware-elements", "guidanceCategory": "user-experience", "summary": "Long feeds provide no scroll-state feedback.", "evidence": "The archive is 6,150 CSS px tall, but probes found no scroll-state/container-query implementation or progress affordance; the header remains static navigation chrome.", "suggestedFix": "Use scroll-state queries or a lightweight declarative progress/back-to-top affordance on long feeds and articles.", "effort": "small", "artifacts": [ "evidence/archive-mobile-dark-probe.json" ], "pathId": "home", "url": "https://tw.news.yahoo.com/" }, { "id": "F04", "severity": "high", "confidence": "high", "principleId": "maximize-content-reduce-noise", "principleCheckId": "no-intrusive-interruptions", "guidanceId": "light-dismiss-a-dialog", "guidanceCategory": "user-experience", "summary": "A full-screen consent gate obscures all news on first visit.", "evidence": "The first-load screenshot shows the entire viewport replaced by consent.yahoo.com; users must choose Accept all, Reject all, or manage settings before seeing content.", "suggestedFix": "Keep equal Accept/Reject choices but move non-essential consent into an in-page, dismissible, content-preserving surface where legally permitted.", "effort": "large", "artifacts": [ "evidence/home-desktop.png" ], "pathId": "home", "url": "https://tw.news.yahoo.com/" }, { "id": "F05", "severity": "high", "confidence": "high", "principleId": "maximize-content-reduce-noise", "principleCheckId": "reduced-chrome", "guidanceId": "performance", "guidanceCategory": "performance", "summary": "Advertising dominates the first content viewport.", "evidence": "The homepage screenshot gives most of the viewport below two navigation rows to a four-card shopping ad, and the article inserts a banner directly above and below the lead.", "suggestedFix": "Reserve smaller ad slots below the primary headline/content, cap ad density, and defer recommendation widgets until after core content.", "effort": "medium", "artifacts": [ "evidence/home.png", "evidence/article.png" ], "pathId": "home", "url": "https://tw.news.yahoo.com/" }, { "id": "F06", "severity": "high", "confidence": "high", "principleId": "adapt-to-the-form-factor", "principleCheckId": "responsive-no-horizontal-scroll", "guidanceId": "css-layout", "guidanceCategory": "css-layout", "summary": "Homepage and poll overflow horizontally and omit a viewport meta value.", "evidence": "CDP measured scrollWidth 1007 at innerWidth 780 on both home and poll and visible horizontal scrollbars in screenshots; their probes report no viewport meta content. The 360px archive template reflows correctly.", "suggestedFix": "Add a valid viewport meta tag to every template and remove fixed/min widths from ad and page shells using intrinsic sizing and overflow containment.", "effort": "medium", "artifacts": [ "evidence/home.png", "evidence/home-probe.json", "evidence/poll.png", "evidence/poll-probe.json" ], "pathId": "home", "url": "https://tw.news.yahoo.com/" }, { "id": "F07", "severity": "low", "confidence": "high", "principleId": "adapt-to-the-form-factor", "principleCheckId": "component-level-responsiveness", "guidanceId": "size-aware-styling", "guidanceCategory": "user-experience", "summary": "Reusable cards rely on page-level sizing rather than container adaptation.", "evidence": "All four template probes found no @container/container-type CSS while cards appear in main, sidebar, and narrow-feed contexts.", "suggestedFix": "Introduce container-type on reusable regions and adapt card layout with size-aware @container rules, retaining viewport fallbacks.", "effort": "medium", "artifacts": [ "evidence/home-probe.json", "evidence/archive-mobile-dark-probe.json" ], "pathId": "home", "url": "https://tw.news.yahoo.com/" }, { "id": "F08", "severity": "high", "confidence": "high", "principleId": "adapt-to-the-form-factor", "principleCheckId": "input-modality-aware", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "summary": "Many targets are undersized and desktop focus is invisible.", "evidence": "The homepage probe counted 297 visible controls below 44px in one dimension and computed the focused sample outline as none 0px; poll counted 130 undersized controls.", "suggestedFix": "Increase target hit areas to at least 44px where practical and add a high-contrast :focus-visible ring that is not clipped.", "effort": "medium", "artifacts": [ "evidence/home-probe.json", "evidence/poll-probe.json" ], "pathId": "home", "url": "https://tw.news.yahoo.com/" }, { "id": "F09", "severity": "high", "confidence": "high", "principleId": "be-fast-and-stable", "principleCheckId": "efficient-resource-delivery", "guidanceId": "performance", "guidanceCategory": "performance", "summary": "The homepage starts an excessive request and script workload.", "evidence": "A clean consented load issued 188 requests including 51 scripts, 56 pings, 14 stylesheets and 17 fetches; template probes observed 459 to 815 retained resources.", "suggestedFix": "Set a request/script budget, prioritize only core assets, lazy-load below-fold modules, and consolidate or remove non-essential tags.", "effort": "large", "artifacts": [ "evidence/perf-home.json", "evidence/home-probe.json", "evidence/poll-probe.json" ], "pathId": "home", "url": "https://tw.news.yahoo.com/" }, { "id": "F10", "severity": "high", "confidence": "high", "principleId": "be-fast-and-stable", "principleCheckId": "trim-unused-and-duplicate-code", "guidanceId": "identify-heavy-scripts", "guidanceCategory": "performance", "summary": "Third-party and duplicated page machinery dominates runtime complexity.", "evidence": "The homepage loaded 51 scripts and 13 distinct non-Yahoo origins, while long-lived template probes retained up to 815 resources and thousands of listeners.", "suggestedFix": "Use coverage/trace analysis to remove unused bundles, gate recommendation/ad code by visibility and consent, and deduplicate tag integrations.", "effort": "large", "artifacts": [ "evidence/perf-home.json", "evidence/home-probe.json" ], "pathId": "home", "url": "https://tw.news.yahoo.com/" }, { "id": "F11", "severity": "medium", "confidence": "high", "principleId": "be-inclusive", "principleCheckId": "names-roles-labels", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "summary": "Some controls and images lack accessible alternatives.", "evidence": "The homepage probe found 10 unnamed controls, 9 empty-text links and 6 images without alt; the poll found 3 unnamed controls.", "suggestedFix": "Give icon-only controls accessible names, ensure linked images have meaningful names, and use empty alt only for decorative images.", "effort": "small", "artifacts": [ "evidence/home-probe.json", "evidence/poll-probe.json" ], "pathId": "home", "url": "https://tw.news.yahoo.com/" }, { "id": "F12", "severity": "high", "confidence": "high", "principleId": "be-inclusive", "principleCheckId": "structure-and-focus", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "summary": "Focus treatment and heading structure are inconsistent.", "evidence": "Desktop focus computed to no outline; the homepage has duplicate H1 “Yahoo新聞”, and poll has three H1 elements including the question.", "suggestedFix": "Use one page-specific H1, preserve logical heading levels, and implement a consistent visible :focus-visible treatment.", "effort": "small", "artifacts": [ "evidence/home-probe.json", "evidence/poll-probe.json" ], "pathId": "home", "url": "https://tw.news.yahoo.com/" }, { "id": "F13", "severity": "medium", "confidence": "high", "principleId": "follow-best-practices", "principleCheckId": "sound-document-and-assets", "guidanceId": "html", "guidanceCategory": "html", "summary": "Image sizing and formats are inconsistent across templates.", "evidence": "Home has 30 of 36 images without width+height and 30 legacy-format images; poll has all 43 images without dimensions and 30 legacy-format images.", "suggestedFix": "Emit intrinsic width/height or aspect-ratio and responsive srcset/sizes, preferring AVIF/WebP where source quality allows.", "effort": "medium", "artifacts": [ "evidence/home-probe.json", "evidence/poll-probe.json" ], "pathId": "home", "url": "https://tw.news.yahoo.com/" }, { "id": "F14", "severity": "medium", "confidence": "high", "principleId": "be-discoverable", "principleCheckId": "canonical-and-indexing-signals", "guidanceId": "search-hidden-content", "guidanceCategory": "user-experience", "summary": "The archive listing lacks a canonical URL.", "evidence": "The archive probe found no link[rel=canonical], while home, poll, and article expose canonicals and robots.txt lists multiple sitemaps.", "suggestedFix": "Add a self-referencing canonical to stable archive/listing pages and verify sitemap canonical consistency.", "effort": "trivial", "artifacts": [ "evidence/archive-mobile-dark-probe.json", "evidence/yrobots.txt", "evidence/ysitemap.xml" ], "pathId": "archive", "url": "https://tw.news.yahoo.com/archive/" }, { "id": "F15", "severity": "high", "confidence": "high", "principleId": "be-private-and-secure", "principleCheckId": "secure-transport-and-headers", "guidanceId": "security", "guidanceCategory": "security", "summary": "The news document has no enforced CSP and uses a permissive referrer policy.", "evidence": "Direct target response headers include HSTS, nosniff and SAMEORIGIN, but no Content-Security-Policy or Permissions-Policy; Referrer-Policy is no-referrer-when-downgrade.", "suggestedFix": "Deploy an enforced nonce/hash CSP with frame-ancestors, set strict-origin-when-cross-origin or stricter, and define a minimal Permissions-Policy.", "effort": "large", "artifacts": [ "evidence/yheaders", "evidence/network-session.json" ], "pathId": "home", "url": "https://tw.news.yahoo.com/" }, { "id": "F16", "severity": "high", "confidence": "high", "principleId": "be-private-and-secure", "principleCheckId": "data-minimisation-and-third-parties", "guidanceId": "privacy", "guidanceCategory": "privacy", "summary": "The page exposes a broad advertising and analytics footprint.", "evidence": "A normal home load contacted 13 non-Yahoo origins including Google Ads, Taboola, Google Tag Manager, Analytics and ScorecardResearch; 56 ping requests occurred within eight seconds.", "suggestedFix": "Audit each vendor, remove low-value partners, batch analytics, defer non-essential third parties until consent and visibility, and document purposes.", "effort": "large", "artifacts": [ "evidence/home-probe.json", "evidence/perf-home.json" ], "pathId": "home", "url": "https://tw.news.yahoo.com/" }, { "id": "F17", "severity": "medium", "confidence": "high", "principleId": "be-sustainable", "principleCheckId": "optimised-assets", "guidanceId": "deliver-optimized-decorative-images", "guidanceCategory": "user-experience", "summary": "Image delivery is not consistently resolution- and format-efficient.", "evidence": "Home reports 30 legacy-format images and no lazy-loaded images; 30 lack dimensions. Poll reports 30 legacy images. The mobile archive is better with 30 lazy images and only one legacy image.", "suggestedFix": "Apply the archive pipeline across templates: responsive srcset/sizes, modern formats, intrinsic dimensions and below-fold lazy loading.", "effort": "medium", "artifacts": [ "evidence/home-probe.json", "evidence/archive-mobile-dark-probe.json", "evidence/poll-probe.json" ], "pathId": "home", "url": "https://tw.news.yahoo.com/" }, { "id": "F18", "severity": "high", "confidence": "high", "principleId": "be-sustainable", "principleCheckId": "third-party-and-media-budget", "guidanceId": "efficient-background-processing", "guidanceCategory": "performance", "summary": "Third-party resource use is disproportionate for text news pages.", "evidence": "The text-first homepage launches 188 requests, 51 scripts, 56 pings and 13 third-party origins before meaningful interaction.", "suggestedFix": "Create a third-party byte/request budget, load vendors on demand, and pause/deprioritize work when content is off-screen or the tab is hidden.", "effort": "large", "artifacts": [ "evidence/perf-home.json", "evidence/home-probe.json" ], "pathId": "home", "url": "https://tw.news.yahoo.com/" }, { "id": "F19", "severity": "medium", "confidence": "high", "principleId": "support-core-task-success", "principleCheckId": "clear-system-state-and-recovery", "guidanceId": "persistent-toast-notifications", "guidanceCategory": "user-experience", "summary": "The server-rendered 404 state provides no useful recovery content.", "evidence": "A direct request to a nonexistent news route returns HTTP 404 with an effectively empty HTML body, offering no visible explanation, search, home link, or retry path without client execution.", "suggestedFix": "Serve a compact SSR 404 with a clear message, search, home/latest-news links and preserved site navigation.", "effort": "small", "artifacts": [ "evidence/y404.html" ], "pathId": "home", "url": "https://tw.news.yahoo.com/" }, { "id": "F20", "severity": "medium", "confidence": "high", "principleId": "be-resilient", "principleCheckId": "network-and-http-failure-states", "guidanceId": "persistent-toast-notifications", "guidanceCategory": "user-experience", "summary": "Failure handling depends on client-side recovery.", "evidence": "The representative nonexistent route returns an empty 404 document body, so no-JS and constrained clients receive a blank failure state.", "suggestedFix": "Return useful server-rendered 404/5xx shells and add explicit retry/offline states for failed feed requests.", "effort": "medium", "artifacts": [ "evidence/y404.html" ], "pathId": "home", "url": "https://tw.news.yahoo.com/" }, { "id": "F21", "severity": "high", "confidence": "high", "principleId": "be-memory-efficient", "principleCheckId": "bounded-footprint", "guidanceId": "identify-heavy-scripts", "guidanceCategory": "performance", "summary": "Memory and listener footprints are disproportionate for text pages.", "evidence": "Post-load probes measured about 349MB JS heap on archive and 379MB on poll, 11,682 to 16,100 Nodes, and 10,789 event listeners on home.", "suggestedFix": "Profile heap dominators and listener ownership, unload invisible ad/recommendation modules, and bound caches and feed DOM.", "effort": "large", "artifacts": [ "evidence/archive-mobile-dark-probe.json", "evidence/poll-probe.json", "evidence/home-probe.json" ], "pathId": "home", "url": "https://tw.news.yahoo.com/" }, { "id": "F22", "severity": "medium", "confidence": "high", "principleId": "be-sustainable", "principleCheckId": "no-wasteful-work", "guidanceId": "deprioritize-background-fetches", "guidanceCategory": "performance", "summary": "Background telemetry is chatty before interaction.", "evidence": "The eight-second consented load recorded 56 Ping requests plus 17 Fetch and 13 XHR requests before the user performed a news task.", "suggestedFix": "Batch telemetry, send it at lifecycle boundaries, and deprioritize or suppress non-essential background fetches.", "effort": "medium", "artifacts": [ "evidence/perf-home.json" ], "pathId": "home", "url": "https://tw.news.yahoo.com/" } ], "taskList": [ { "title": "Keep equal Accept/Reject choices but move non-essential consent into an in-page, dismissible, content-preserving surface where legally permitted.", "findingIds": [ "F04" ], "guidanceId": "light-dismiss-a-dialog", "id": "T01", "priority": 1, "status": "open" }, { "title": "Reserve smaller ad slots below the primary headline/content, cap ad density, and defer recommendation widgets until after core content.", "findingIds": [ "F05" ], "guidanceId": "performance", "id": "T02", "priority": 2, "status": "open" }, { "title": "Add a valid viewport meta tag to every template and remove fixed/min widths from ad and page shells using intrinsic sizing and overflow containment.", "findingIds": [ "F06" ], "guidanceId": "css-layout", "id": "T03", "priority": 3, "status": "open" }, { "title": "Increase target hit areas to at least 44px where practical and add a high-contrast :focus-visible ring that is not clipped.", "findingIds": [ "F08" ], "guidanceId": "accessibility", "id": "T04", "priority": 4, "status": "open" }, { "title": "Set a request/script budget, prioritize only core assets, lazy-load below-fold modules, and consolidate or remove non-essential tags.", "findingIds": [ "F09" ], "guidanceId": "performance", "id": "T05", "priority": 5, "status": "open" }, { "title": "Use coverage/trace analysis to remove unused bundles, gate recommendation/ad code by visibility and consent, and deduplicate tag integrations.", "findingIds": [ "F10" ], "guidanceId": "identify-heavy-scripts", "id": "T06", "priority": 6, "status": "open" }, { "title": "Use one page-specific H1, preserve logical heading levels, and implement a consistent visible :focus-visible treatment.", "findingIds": [ "F12" ], "guidanceId": "accessibility", "id": "T07", "priority": 7, "status": "open" }, { "title": "Deploy an enforced nonce/hash CSP with frame-ancestors, set strict-origin-when-cross-origin or stricter, and define a minimal Permissions-Policy.", "findingIds": [ "F15" ], "guidanceId": "security", "id": "T08", "priority": 8, "status": "open" }, { "title": "Audit each vendor, remove low-value partners, batch analytics, defer non-essential third parties until consent and visibility, and document purposes.", "findingIds": [ "F16" ], "guidanceId": "privacy", "id": "T09", "priority": 9, "status": "open" }, { "title": "Create a third-party byte/request budget, load vendors on demand, and pause/deprioritize work when content is off-screen or the tab is hidden.", "findingIds": [ "F18" ], "guidanceId": "efficient-background-processing", "id": "T10", "priority": 10, "status": "open" }, { "title": "Profile heap dominators and listener ownership, unload invisible ad/recommendation modules, and bound caches and feed DOM.", "findingIds": [ "F21" ], "guidanceId": "identify-heavy-scripts", "id": "T11", "priority": 11, "status": "open" }, { "title": "Declare color-scheme: light dark and apply preference-driven surface/text tokens consistently across every template.", "findingIds": [ "F01" ], "guidanceId": "dark-mode", "id": "T12", "priority": 12, "status": "open" }, { "title": "Give icon-only controls accessible names, ensure linked images have meaningful names, and use empty alt only for decorative images.", "findingIds": [ "F11" ], "guidanceId": "accessibility", "id": "T13", "priority": 13, "status": "open" }, { "title": "Emit intrinsic width/height or aspect-ratio and responsive srcset/sizes, preferring AVIF/WebP where source quality allows.", "findingIds": [ "F13" ], "guidanceId": "html", "id": "T14", "priority": 14, "status": "open" }, { "title": "Add a self-referencing canonical to stable archive/listing pages and verify sitemap canonical consistency.", "findingIds": [ "F14" ], "guidanceId": "search-hidden-content", "id": "T15", "priority": 15, "status": "open" }, { "title": "Apply the archive pipeline across templates: responsive srcset/sizes, modern formats, intrinsic dimensions and below-fold lazy loading.", "findingIds": [ "F17" ], "guidanceId": "deliver-optimized-decorative-images", "id": "T16", "priority": 16, "status": "open" }, { "title": "Serve a compact SSR 404 with a clear message, search, home/latest-news links and preserved site navigation.", "findingIds": [ "F19" ], "guidanceId": "persistent-toast-notifications", "id": "T17", "priority": 17, "status": "open" }, { "title": "Return useful server-rendered 404/5xx shells and add explicit retry/offline states for failed feed requests.", "findingIds": [ "F20" ], "guidanceId": "persistent-toast-notifications", "id": "T18", "priority": 18, "status": "open" }, { "title": "Batch telemetry, send it at lifecycle boundaries, and deprioritize or suppress non-essential background fetches.", "findingIds": [ "F22" ], "guidanceId": "deprioritize-background-fetches", "id": "T19", "priority": 19, "status": "open" }, { "title": "Add @view-transition { navigation: auto } with a reduced-motion fallback, then name stable shared elements selectively.", "findingIds": [ "F02" ], "guidanceId": "cross-document-transitions", "id": "T20", "priority": 20, "status": "open" }, { "title": "Use scroll-state queries or a lightweight declarative progress/back-to-top affordance on long feeds and articles.", "findingIds": [ "F03" ], "guidanceId": "scroll-position-aware-elements", "id": "T21", "priority": 21, "status": "open" }, { "title": "Introduce container-type on reusable regions and adapt card layout with size-aware @container rules, retaining viewport fallbacks.", "findingIds": [ "F07" ], "guidanceId": "size-aware-styling", "id": "T22", "priority": 22, "status": "open" } ], "budget": { "wallClockSeconds": 900, "pathCount": 6, "auditPasses": 1 }, "agent": "pi", "runId": "2026-07-19T07-18-03-322Z" }