{ "url": "https://www.yahoo.co.jp", "auditedAt": "2026-07-23T03:44:22.798Z", "mode": "report", "status": "completed", "statusDetail": "Completed audit of the only surface available from this network location: Yahoo! JAPAN’s intentional EEA/UK HTTP 403 regional access notice. The Japanese homepage and its normal templates were not reachable, so conclusions apply to this notice, not the Japan-served portal.", "page": { "appType": "mpa", "framework": "none detected", "notes": "Static, script-free bilingual regional access notice returned with HTTP 403. The page is fully present in raw HTML." }, "evidenceUsed": [ "screenshot", "dom", "layout-metrics", "evaluate-probe", "trace", "har", "discoverability", "heap-summary", "headers", "cookies", "trackers", "images", "secrets", "axe-core", "Lighthouse attempted (blocked by intentional HTTP 403)" ], "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": "other", "path": "evidence/axe.json", "caption": "axe json", "findingIds": [ "F02", "F04", "F05", "F06", "F11" ] }, { "type": "other", "path": "evidence/contrast-probe.json", "caption": "contrast probe json", "findingIds": [ "F02" ] }, { "type": "other", "path": "evidence/cookies.json", "caption": "cookies json", "findingIds": [] }, { "type": "screenshot", "path": "evidence/discoverability-crawler.png", "caption": "discoverability crawler png", "findingIds": [] }, { "type": "screenshot", "path": "evidence/discoverability-rendered.png", "caption": "discoverability rendered png", "findingIds": [] }, { "type": "discoverability", "path": "evidence/discoverability.json", "caption": "discoverability json", "findingIds": [ "F08" ] }, { "type": "other", "path": "evidence/headers.json", "caption": "headers json", "findingIds": [ "F09", "F10" ] }, { "type": "heap", "path": "evidence/heap-baseline.json", "caption": "heap baseline json", "findingIds": [] }, { "type": "screenshot", "path": "evidence/home-dark.png", "caption": "home dark png", "condition": "prefers-color-scheme: dark", "findingIds": [ "F01" ] }, { "type": "screenshot", "path": "evidence/home-desktop.png", "caption": "home desktop png", "findingIds": [ "F04" ] }, { "type": "dom", "path": "evidence/home-dom.json", "caption": "home dom json", "findingIds": [ "F05" ] }, { "type": "layout", "path": "evidence/home-mobile-layout.json", "caption": "home mobile layout json", "condition": "viewport: 360x800", "findingIds": [ "F07" ] }, { "type": "screenshot", "path": "evidence/home-mobile.png", "caption": "home mobile png", "condition": "viewport: 360x800", "findingIds": [ "F06" ] }, { "type": "other", "path": "evidence/home-recon.json", "caption": "home recon json", "findingIds": [] }, { "type": "har-summary", "path": "evidence/home-summary.json", "caption": "home summary json", "findingIds": [ "F03", "F12" ] }, { "type": "trace-summary", "path": "evidence/home-trace-summary.json", "caption": "home trace summary json", "findingIds": [ "F03" ] }, { "type": "trace", "path": "evidence/home-trace.json", "caption": "home trace json", "findingIds": [] }, { "type": "har", "path": "evidence/home.har", "caption": "home har", "findingIds": [] }, { "type": "other", "path": "evidence/images.json", "caption": "images json", "findingIds": [ "F07", "F12" ] }, { "type": "lighthouse", "path": "evidence/lighthouse-summary.json", "caption": "lighthouse summary json", "findingIds": [] }, { "type": "lighthouse", "path": "evidence/lighthouse.json", "caption": "lighthouse json", "findingIds": [] }, { "type": "other", "path": "evidence/preferences-probe.json", "caption": "preferences probe json", "findingIds": [ "F01" ] }, { "type": "other", "path": "evidence/robots-errors.json", "caption": "robots errors json", "findingIds": [] }, { "type": "other", "path": "evidence/runtime-memory-probe.json", "caption": "runtime memory probe json", "findingIds": [] }, { "type": "other", "path": "evidence/secrets.json", "caption": "secrets json", "findingIds": [] }, { "type": "other", "path": "evidence/static-probe.json", "caption": "static probe json", "findingIds": [ "F05", "F06", "F08", "F11" ] }, { "type": "other", "path": "evidence/trackers.json", "caption": "trackers json", "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", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "issues", "evidence": "Under prefers-color-scheme: dark, the computed root background remained rgb(255,255,255), color-scheme remained normal, and the dark screenshot was pixel-equivalent in appearance to the light capture.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/home-dark.png", "evidence/preferences-probe.json" ], "findingIds": [ "F01" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-reduced-motion", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "evaluate under prefers-reduced-motion: reduce found zero document animations.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/preferences-probe.json" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-contrast", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "issues", "evidence": "The prefers-contrast: more probe matched the preference but returned the same #1a75ff/#1f78ff link colors; axe measured ratios of 4.17:1 and 4.04:1, below WCAG AA for normal text.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/contrast-probe.json", "evidence/axe.json" ], "findingIds": [ "F02" ] }, { "principleId": "implement-natural-interactions", "checkId": "view-transitions", "confidence": "high", "method": "Applicability judgement from DOM, screenshots, and page profile.", "status": "not-applicable", "evidence": "The served regional notice has no same-document state transition or multi-step route surface to animate.", "reason": "The served regional notice has no same-document state transition or multi-step route surface to animate.", "pathIds": [ "geo-notice" ] }, { "principleId": "implement-natural-interactions", "checkId": "scroll-driven-animations", "confidence": "high", "method": "Applicability judgement from DOM, screenshots, and page profile.", "status": "not-applicable", "evidence": "The notice has no parallax, reveal, scrollytelling, carousel, or other scroll-linked motion.", "reason": "The notice has no parallax, reveal, scrollytelling, carousel, or other scroll-linked motion.", "pathIds": [ "geo-notice" ] }, { "principleId": "implement-natural-interactions", "checkId": "physical-gestures", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "The page relies on native document scrolling and ordinary links, with no custom pointer handlers that fight platform gestures.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/runtime-memory-probe.json", "evidence/home-dom.json" ] }, { "principleId": "provide-guided-navigation", "checkId": "scroll-state-aware-chrome", "confidence": "high", "method": "Applicability judgement from DOM, screenshots, and page profile.", "status": "not-applicable", "evidence": "There is no sticky or affixed application chrome whose state needs to react to scrolling.", "reason": "There is no sticky or affixed application chrome whose state needs to react to scrolling.", "pathIds": [ "geo-notice" ] }, { "principleId": "provide-guided-navigation", "checkId": "anchored-positioning", "confidence": "high", "method": "Applicability judgement from DOM, screenshots, and page profile.", "status": "not-applicable", "evidence": "The page contains no tooltip, popover, menu, or anchored overlay.", "reason": "The page contains no tooltip, popover, menu, or anchored overlay.", "pathIds": [ "geo-notice" ] }, { "principleId": "provide-guided-navigation", "checkId": "directs-attention", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "Twenty descriptive links remain in DOM reading order and show native focus outlines when focused.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/static-probe.json" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "no-intrusive-interruptions", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "Desktop and mobile first-load screenshots show the notice content directly with no overlay or interstitial.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/home-desktop.png", "evidence/home-mobile.png" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "semantic-dismissible-primitives", "confidence": "high", "method": "Applicability judgement from DOM, screenshots, and page profile.", "status": "not-applicable", "evidence": "The page contains no overlays or rich controls requiring dialog, popover, details, or picker semantics.", "reason": "The page contains no overlays or rich controls requiring dialog, popover, details, or picker semantics.", "pathIds": [ "geo-notice" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "reduced-chrome", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "The screenshots show a compact header/footer and content-led cards with no obscuring application frame.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/home-desktop.png" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "responsive-no-horizontal-scroll", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "At 360x800 the layout reported scrollWidth 360, clientWidth 360, and zero horizontal overflow.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/home-mobile-layout.json", "evidence/home-mobile.png" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "component-level-responsiveness", "confidence": "high", "method": "Applicability judgement from DOM, screenshots, and page profile.", "status": "not-applicable", "evidence": "The static notice has no component reused in differently sized containers; mobile layout adaptation was judged at page level.", "reason": "The static notice has no component reused in differently sized containers; mobile layout adaptation was judged at page level.", "pathIds": [ "geo-notice" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "input-modality-aware", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "All 20 links are keyboard-focusable in reading order and display a native auto outline; no hover-only controls exist.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/static-probe.json" ] }, { "principleId": "support-core-task-success", "checkId": "clear-purpose-and-primary-action", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "The first viewport names the regional restriction and presents the notice immediately in Japanese and English.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/home-desktop.png" ] }, { "principleId": "support-core-task-success", "checkId": "primary-flow-completion", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "The static notice exposes direct, descriptive links to available services and help; all 20 anchors have real href values.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/static-probe.json" ] }, { "principleId": "support-core-task-success", "checkId": "clear-system-state-and-recovery", "confidence": "high", "method": "Applicability judgement from DOM, screenshots, and page profile.", "status": "not-applicable", "evidence": "The served surface is a terminal availability notice rather than an asynchronous application state; its recovery guidance and links are directly visible.", "reason": "The served surface is a terminal availability notice rather than an asynchronous application state; its recovery guidance and links are directly visible.", "pathIds": [ "geo-notice" ] }, { "principleId": "be-fast-and-stable", "checkId": "good-core-web-vitals", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "issues", "evidence": "The CDP trace measured FCP and LCP at 2768 ms. It found zero long tasks and zero TBT, indicating the delay is network/render-path rather than JavaScript execution.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/home-trace-summary.json", "evidence/home-summary.json" ], "findingIds": [ "F03" ] }, { "principleId": "be-fast-and-stable", "checkId": "visual-stability", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "The mobile layout observer measured CLS 0 with no recorded shifts.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/home-mobile-layout.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-main-thread", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "The trace found zero long tasks and 0 ms total blocking time; the page ships no scripts.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/home-trace-summary.json", "evidence/runtime-memory-probe.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-resource-delivery", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "HAR recorded only nine requests and 73,750 transferred bytes with no missing cache headers or redirects; five parser-inserted stylesheets are small but form the critical path.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/home-summary.json", "evidence/home-dom.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "trim-unused-and-duplicate-code", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "The page ships no JavaScript and only 26.6 KB of CSS across five stylesheets; no third-party executable code is present.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/home-summary.json", "evidence/runtime-memory-probe.json" ] }, { "principleId": "be-inclusive", "checkId": "names-roles-labels", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "axe reported no name/role/label or image-alt violation; the only image has meaningful alt text and there are no forms.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/axe.json", "evidence/images.json" ] }, { "principleId": "be-inclusive", "checkId": "sufficient-contrast", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "issues", "evidence": "axe reported serious color-contrast violations across Japanese and English links: #1a75ff at 4.17:1 and #1f78ff at 4.04:1 versus the required 4.5:1 for normal text.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/axe.json", "evidence/home-desktop.png" ], "findingIds": [ "F04" ] }, { "principleId": "be-inclusive", "checkId": "structure-and-focus", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "issues", "evidence": "The DOM probe found headings H3,H2,H2 and no H1; axe reported page-has-heading-one and landmark-contentinfo-is-top-level violations. Keyboard focus itself remained visible.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/static-probe.json", "evidence/axe.json", "evidence/home-dom.json" ], "findingIds": [ "F05" ] }, { "principleId": "be-inclusive", "checkId": "legible-text", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "Desktop and mobile captures show unclipped, comfortably wrapped body text; mobile layout has no overflow.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/home-desktop.png", "evidence/home-mobile.png" ] }, { "principleId": "be-inclusive", "checkId": "zoom-reflow-targets-and-media", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "issues", "evidence": "The live meta viewport is width=device-width,user-scalable=no; axe classified this as a critical meta-viewport violation. Narrow viewport reflow itself had zero horizontal overflow.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/axe.json", "evidence/static-probe.json", "evidence/home-mobile.png" ], "findingIds": [ "F06" ] }, { "principleId": "follow-best-practices", "checkId": "no-console-errors", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "The page contains zero script elements and no executable runtime; CDP probes completed without an uncaught page exception.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/runtime-memory-probe.json" ] }, { "principleId": "follow-best-practices", "checkId": "sound-document-and-assets", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "issues", "evidence": "The images primitive found a 1933 px-wide PNG displayed at 170 px, with width but no height attribute and no srcset. Observed CLS was zero in this run, but the intrinsic-size and delivery hygiene remain weak.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/images.json", "evidence/home-mobile-layout.json" ], "findingIds": [ "F07" ] }, { "principleId": "follow-best-practices", "checkId": "browser-platform-hygiene", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "The static, script-free page makes no permission requests, has no inputs that can block paste, and exposes no deprecated runtime API use.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/runtime-memory-probe.json", "evidence/static-probe.json" ] }, { "principleId": "be-discoverable", "checkId": "title-and-description", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "issues", "evidence": "The rendered and raw HTML both preserve the title, while DOM and discoverability probes found no meta[name=description].", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/static-probe.json", "evidence/discoverability.json" ], "findingIds": [ "F08" ] }, { "principleId": "be-discoverable", "checkId": "crawlable-and-mobile-friendly", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "All 20 links have real href values, viewport metadata exists, and raw HTML contains 100% of rendered content; the regional response is intentionally HTTP 403.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/static-probe.json", "evidence/discoverability.json" ] }, { "principleId": "be-discoverable", "checkId": "canonical-and-indexing-signals", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "The served regional restriction consistently returns HTTP 403 for the document, robots, sitemap, and unknown paths; this is an intentional non-indexable access-denial surface rather than an accidental 200/noindex mismatch.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/robots-errors.json", "evidence/discoverability.json" ] }, { "principleId": "be-discoverable", "checkId": "structured-and-shareable-metadata", "confidence": "high", "method": "Applicability judgement from DOM, screenshots, and page profile.", "status": "not-applicable", "evidence": "This regional access notice is not an article, product, event, or other rich entity requiring schema.org structured data.", "reason": "This regional access notice is not an article, product, event, or other rich entity requiring schema.org structured data.", "pathIds": [ "geo-notice" ] }, { "principleId": "be-private-and-secure", "checkId": "secure-transport-and-headers", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "issues", "evidence": "The headers primitive confirmed HTTPS and X-Frame-Options: SAMEORIGIN, but found no CSP, HSTS, X-Content-Type-Options, Referrer-Policy, or Permissions-Policy.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/headers.json" ], "findingIds": [ "F09" ] }, { "principleId": "be-private-and-secure", "checkId": "data-minimisation-and-third-parties", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "No cookies, known trackers, scripts, analytics beacons, or exposed secrets were found; the sole asset origin is s.yimg.jp.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/cookies.json", "evidence/trackers.json", "evidence/secrets.json" ] }, { "principleId": "be-private-and-secure", "checkId": "in-context-permissions-and-modern-auth", "confidence": "high", "method": "Applicability judgement from DOM, screenshots, and page profile.", "status": "not-applicable", "evidence": "The notice requests no permissions and exposes no authentication flow.", "reason": "The notice requests no permissions and exposes no authentication flow.", "pathIds": [ "geo-notice" ] }, { "principleId": "be-private-and-secure", "checkId": "defensive-browser-policies", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "issues", "evidence": "X-Frame-Options protects against framing, but the response has no frame-ancestors CSP, Referrer-Policy, Permissions-Policy, HSTS, or CSP-based XSS defense.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/headers.json" ], "findingIds": [ "F10" ] }, { "principleId": "be-resilient", "checkId": "progressive-enhancement", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "Raw HTML contains 100% of rendered content, is not a JS shell, and browser/crawler screenshots both contain the notice.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/discoverability.json", "evidence/discoverability-rendered.png", "evidence/discoverability-crawler.png" ] }, { "principleId": "be-resilient", "checkId": "resilient-runtime-behaviour", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "The page is script-free with no overlays or async dependencies; its static runtime has no fragile state to sequence.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/runtime-memory-probe.json" ] }, { "principleId": "be-resilient", "checkId": "offline-and-installable", "confidence": "high", "method": "Applicability judgement from DOM, screenshots, and page profile.", "status": "not-applicable", "evidence": "This static regional notice is not an app-like experience and does not need installation or offline app behavior.", "reason": "This static regional notice is not an app-like experience and does not need installation or offline app behavior.", "pathIds": [ "geo-notice" ] }, { "principleId": "be-resilient", "checkId": "network-and-http-failure-states", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "The 403 state is an intentional, fully rendered bilingual explanation with help and alternative-service links rather than a blank shell or infinite spinner.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/home-desktop.png", "evidence/robots-errors.json" ] }, { "principleId": "be-internationalised", "checkId": "lang-dir-and-logical-properties", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "issues", "evidence": "The DOM returned an empty html.lang and axe reported a serious html-has-lang violation. The page contains both Japanese and English sections but does not mark the English section with lang=\"en\".", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/axe.json", "evidence/static-probe.json" ], "findingIds": [ "F11" ] }, { "principleId": "be-internationalised", "checkId": "locale-aware-data", "confidence": "high", "method": "Applicability judgement from DOM, screenshots, and page profile.", "status": "not-applicable", "evidence": "Dates occur as authored prose in separately written Japanese and English notices; there is no dynamic locale-sensitive data formatting.", "reason": "Dates occur as authored prose in separately written Japanese and English notices; there is no dynamic locale-sensitive data formatting.", "pathIds": [ "geo-notice" ] }, { "principleId": "be-internationalised", "checkId": "time-zone-correctness", "confidence": "high", "method": "Applicability judgement from DOM, screenshots, and page profile.", "status": "not-applicable", "evidence": "The notice contains no time-of-day, recurring event, scheduling, or time-zone-sensitive interaction.", "reason": "The notice contains no time-of-day, recurring event, scheduling, or time-zone-sensitive interaction.", "pathIds": [ "geo-notice" ] }, { "principleId": "be-trustworthy", "checkId": "no-dark-patterns", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "The notice states the restriction directly, presents available alternatives, and contains no ads, consent wall, upsell, forced continuity, or hidden cancellation.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/home-desktop.png", "evidence/static-probe.json" ] }, { "principleId": "be-trustworthy", "checkId": "humane-error-handling", "confidence": "high", "method": "Applicability judgement from DOM, screenshots, and page profile.", "status": "not-applicable", "evidence": "There are no forms or user-entered values to validate.", "reason": "There are no forms or user-entered values to validate.", "pathIds": [ "geo-notice" ] }, { "principleId": "be-trustworthy", "checkId": "trustworthy-input-assistance", "confidence": "high", "method": "Applicability judgement from DOM, screenshots, and page profile.", "status": "not-applicable", "evidence": "There are no input fields requiring autocomplete or autofill assistance.", "reason": "There are no input fields requiring autocomplete or autofill assistance.", "pathIds": [ "geo-notice" ] }, { "principleId": "be-trustworthy", "checkId": "safe-commercial-and-account-flows", "confidence": "high", "method": "Applicability judgement from DOM, screenshots, and page profile.", "status": "not-applicable", "evidence": "There is no checkout, subscription, consent, authentication, or account-management flow on the notice.", "reason": "There is no checkout, subscription, consent, authentication, or account-management flow on the notice.", "pathIds": [ "geo-notice" ] }, { "principleId": "be-sustainable", "checkId": "optimised-assets", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "issues", "evidence": "The image is naturally 1933 px wide but displayed at 170 px, has no srcset, and transfers 13 KB as PNG; the entire page transfers 73.8 KB.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/images.json", "evidence/home-summary.json" ], "findingIds": [ "F12" ] }, { "principleId": "be-sustainable", "checkId": "no-wasteful-work", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "There is no JavaScript, media, background processing, analytics, or repeated fetch activity; only nine load requests were observed.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/home-summary.json", "evidence/runtime-memory-probe.json" ] }, { "principleId": "be-sustainable", "checkId": "third-party-and-media-budget", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "Total transfer was 73.8 KB, with no video/audio/autoplay, trackers, or executable third-party script; the sole asset host serves static Yahoo assets.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/home-summary.json", "evidence/trackers.json" ] }, { "principleId": "be-agent-ready", "checkId": "structured-agent-capabilities", "confidence": "high", "method": "Applicability judgement from DOM, screenshots, and page profile.", "status": "not-applicable", "evidence": "This static regional notice offers no transactional capability for an agent to invoke; its content is already present in raw HTML.", "reason": "This static regional notice offers no transactional capability for an agent to invoke; its content is already present in raw HTML.", "pathIds": [ "geo-notice" ] }, { "principleId": "be-agent-ready", "checkId": "on-device-inference", "confidence": "high", "method": "Applicability judgement from DOM, screenshots, and page profile.", "status": "not-applicable", "evidence": "Summarisation or local inference would add no proportionate value to this short static availability notice.", "reason": "Summarisation or local inference would add no proportionate value to this short static availability notice.", "pathIds": [ "geo-notice" ] }, { "principleId": "be-memory-efficient", "checkId": "no-leak-under-repeated-interaction", "confidence": "high", "method": "Applicability judgement from DOM, screenshots, and page profile.", "status": "not-applicable", "evidence": "The static page has no representative repeatable interaction and ships no JavaScript, so a synthetic repetition test would not be meaningful.", "reason": "The static page has no representative repeatable interaction and ships no JavaScript, so a synthetic repetition test would not be meaningful.", "pathIds": [ "geo-notice" ] }, { "principleId": "be-memory-efficient", "checkId": "bounded-footprint", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "The baseline heap summary was proportionate for the static page: 1.92 MB self size, while Performance.memory reported about 0.96 MB used JS heap and the DOM had 99 elements.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/heap-baseline.json", "evidence/runtime-memory-probe.json" ] }, { "principleId": "be-memory-efficient", "checkId": "no-detached-dom-or-unbounded-listeners", "confidence": "high", "method": "Planned check-specific review using the cited CDP, visual, network, accessibility, or heap evidence.", "status": "pass", "evidence": "The heap summary contained no Detached constructor population, and the page ships no scripts, timers, observers, or listener-producing application runtime.", "pathIds": [ "geo-notice" ], "artifacts": [ "evidence/heap-baseline.json", "evidence/runtime-memory-probe.json" ] } ], "principleOutcomes": [ { "principleId": "respect-user-preferences", "expectation": "default", "status": "issues", "findingIds": [ "F01", "F02" ] }, { "principleId": "implement-natural-interactions", "expectation": "default", "status": "pass", "findingIds": [] }, { "principleId": "provide-guided-navigation", "expectation": "default", "status": "pass", "findingIds": [] }, { "principleId": "maximize-content-reduce-noise", "expectation": "default", "status": "pass", "findingIds": [] }, { "principleId": "adapt-to-the-form-factor", "expectation": "default", "status": "pass", "findingIds": [] }, { "principleId": "support-core-task-success", "expectation": "default", "status": "pass", "findingIds": [] }, { "principleId": "be-fast-and-stable", "expectation": "default", "status": "issues", "findingIds": [ "F03" ] }, { "principleId": "be-inclusive", "expectation": "default", "status": "issues", "findingIds": [ "F04", "F05", "F06" ] }, { "principleId": "follow-best-practices", "expectation": "default", "status": "issues", "findingIds": [ "F07" ] }, { "principleId": "be-discoverable", "expectation": "default", "status": "issues", "findingIds": [ "F08" ] }, { "principleId": "be-private-and-secure", "expectation": "default", "status": "issues", "findingIds": [ "F09", "F10" ] }, { "principleId": "be-resilient", "expectation": "contextual", "status": "pass", "findingIds": [] }, { "principleId": "be-internationalised", "expectation": "contextual", "status": "issues", "findingIds": [ "F11" ] }, { "principleId": "be-trustworthy", "expectation": "default", "status": "pass", "findingIds": [] }, { "principleId": "be-sustainable", "expectation": "contextual", "status": "issues", "findingIds": [ "F12" ] }, { "principleId": "be-agent-ready", "expectation": "contextual", "status": "not-applicable", "reason": "This static regional notice offers no transactional capability for an agent to invoke; its content is already present in raw HTML. Summarisation or local inference would add no proportionate value to this short static availability notice." }, { "principleId": "be-memory-efficient", "expectation": "default", "status": "pass", "findingIds": [] } ], "paths": [ { "id": "geo-notice", "description": "Homepage URL as served from this audit location: static EEA/UK regional restriction notice. Represents the only reachable www.yahoo.co.jp template. Covered desktop, mobile, dark/reduced-motion/contrast preferences, keyboard focus, raw HTML/no-JS, performance, network, security, accessibility, and memory. Not covered: Japan-only portal, search/news/content/account/commerce templates, because the edge consistently returns the same intentional 403 notice for this region.", "url": "https://www.yahoo.co.jp/", "conditions": [ "desktop 780px", "viewport: 360x800", "prefers-color-scheme: dark", "prefers-reduced-motion: reduce", "prefers-contrast: more", "keyboard focus", "JavaScript disabled/raw crawler", "regional HTTP 403" ], "result": "issues" } ], "findings": [ { "id": "F01", "pathId": "geo-notice", "url": "https://www.yahoo.co.jp/", "principleId": "respect-user-preferences", "principleCheckId": "respects-color-scheme", "guidanceId": "dark-mode", "guidanceCategory": "css", "severity": "medium", "confidence": "high", "summary": "The notice is hard-coded to a light theme and does not honor the user’s dark color-scheme preference.", "evidence": "Under prefers-color-scheme: dark, the computed root background remained rgb(255,255,255), color-scheme remained normal, and the dark screenshot was pixel-equivalent in appearance to the light capture.", "artifacts": [ "evidence/home-dark.png", "evidence/preferences-probe.json" ], "suggestedFix": "Declare color-scheme: light dark and provide preference-driven surface, text, border, and link colors using prefers-color-scheme or light-dark().", "effort": "small" }, { "id": "F02", "pathId": "geo-notice", "url": "https://www.yahoo.co.jp/", "principleId": "respect-user-preferences", "principleCheckId": "respects-contrast", "guidanceId": "adapt-scrollbar-to-contrast-preferences", "guidanceCategory": "accessibility", "severity": "medium", "confidence": "high", "summary": "The page does not adapt its controls or colors when the user requests more contrast.", "evidence": "The prefers-contrast: more probe matched the preference but returned the same #1a75ff/#1f78ff link colors; axe measured ratios of 4.17:1 and 4.04:1, below WCAG AA for normal text.", "artifacts": [ "evidence/contrast-probe.json", "evidence/axe.json" ], "suggestedFix": "Add a prefers-contrast: more treatment with stronger link contrast and preserve visible focus and control boundaries in forced-colors mode.", "effort": "small" }, { "id": "F03", "pathId": "geo-notice", "url": "https://www.yahoo.co.jp/", "principleId": "be-fast-and-stable", "principleCheckId": "good-core-web-vitals", "guidanceId": "performance", "guidanceCategory": "performance", "severity": "medium", "confidence": "high", "summary": "Largest Contentful Paint was slightly outside the good Core Web Vitals threshold.", "evidence": "The CDP trace measured FCP and LCP at 2768 ms. It found zero long tasks and zero TBT, indicating the delay is network/render-path rather than JavaScript execution.", "artifacts": [ "evidence/home-trace-summary.json", "evidence/home-summary.json" ], "suggestedFix": "Shorten the critical render path by consolidating or inlining critical CSS and preloading only the key font/image resources needed for the first viewport.", "effort": "medium" }, { "id": "F04", "pathId": "geo-notice", "url": "https://www.yahoo.co.jp/", "principleId": "be-inclusive", "principleCheckId": "sufficient-contrast", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "severity": "high", "confidence": "high", "summary": "Primary and inline link colors do not meet WCAG AA contrast against white.", "evidence": "axe reported serious color-contrast violations across Japanese and English links: #1a75ff at 4.17:1 and #1f78ff at 4.04:1 versus the required 4.5:1 for normal text.", "artifacts": [ "evidence/axe.json", "evidence/home-desktop.png" ], "suggestedFix": "Use a darker blue that reaches at least 4.5:1 on white and retain a non-color link cue such as underline, especially in prose.", "effort": "trivial" }, { "id": "F05", "pathId": "geo-notice", "url": "https://www.yahoo.co.jp/", "principleId": "be-inclusive", "principleCheckId": "structure-and-focus", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "severity": "medium", "confidence": "high", "summary": "The document has no H1, starts with H3 then H2, and nests the contentinfo footer inside main.", "evidence": "The DOM probe found headings H3,H2,H2 and no H1; axe reported page-has-heading-one and landmark-contentinfo-is-top-level violations. Keyboard focus itself remained visible.", "artifacts": [ "evidence/static-probe.json", "evidence/axe.json", "evidence/home-dom.json" ], "suggestedFix": "Use one H1 for the access notice, place section headings beneath it in order, and move the footer outside the main landmark.", "effort": "small" }, { "id": "F06", "pathId": "geo-notice", "url": "https://www.yahoo.co.jp/", "principleId": "be-inclusive", "principleCheckId": "zoom-reflow-targets-and-media", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "severity": "high", "confidence": "high", "summary": "The viewport configuration disables pinch zoom.", "evidence": "The live meta viewport is width=device-width,user-scalable=no; axe classified this as a critical meta-viewport violation. Narrow viewport reflow itself had zero horizontal overflow.", "artifacts": [ "evidence/axe.json", "evidence/static-probe.json", "evidence/home-mobile.png" ], "suggestedFix": "Remove user-scalable=no and do not set maximum-scale below 5 so users can magnify content.", "effort": "trivial" }, { "id": "F07", "pathId": "geo-notice", "url": "https://www.yahoo.co.jp/", "principleId": "follow-best-practices", "principleCheckId": "sound-document-and-assets", "guidanceId": "html", "guidanceCategory": "html", "severity": "low", "confidence": "high", "summary": "The logo lacks an explicit height and is delivered vastly larger than its rendered size.", "evidence": "The images primitive found a 1933 px-wide PNG displayed at 170 px, with width but no height attribute and no srcset. Observed CLS was zero in this run, but the intrinsic-size and delivery hygiene remain weak.", "artifacts": [ "evidence/images.json", "evidence/home-mobile-layout.json" ], "suggestedFix": "Export an appropriately sized modern-format logo, provide width and height attributes, and add responsive sources only if multiple display sizes are required.", "effort": "small" }, { "id": "F08", "pathId": "geo-notice", "url": "https://www.yahoo.co.jp/", "principleId": "be-discoverable", "principleCheckId": "title-and-description", "guidanceId": "html", "guidanceCategory": "html", "severity": "medium", "confidence": "high", "summary": "The notice has a descriptive title but no meta description.", "evidence": "The rendered and raw HTML both preserve the title, while DOM and discoverability probes found no meta[name=description].", "artifacts": [ "evidence/static-probe.json", "evidence/discoverability.json" ], "suggestedFix": "Add a concise bilingual meta description explaining the regional availability notice and available alternatives.", "effort": "trivial" }, { "id": "F09", "pathId": "geo-notice", "url": "https://www.yahoo.co.jp/", "principleId": "be-private-and-secure", "principleCheckId": "secure-transport-and-headers", "guidanceId": "security", "guidanceCategory": "security", "severity": "high", "confidence": "high", "summary": "The 403 notice response omits several baseline browser security headers.", "evidence": "The headers primitive confirmed HTTPS and X-Frame-Options: SAMEORIGIN, but found no CSP, HSTS, X-Content-Type-Options, Referrer-Policy, or Permissions-Policy.", "artifacts": [ "evidence/headers.json" ], "suggestedFix": "Serve a restrictive CSP, long-lived HSTS after subdomain review, nosniff, a deliberate Referrer-Policy, and a least-privilege Permissions-Policy on the notice response.", "effort": "small" }, { "id": "F10", "pathId": "geo-notice", "url": "https://www.yahoo.co.jp/", "principleId": "be-private-and-secure", "principleCheckId": "defensive-browser-policies", "guidanceId": "security", "guidanceCategory": "security", "severity": "medium", "confidence": "high", "summary": "Defense-in-depth policies are incomplete despite clickjacking protection being present.", "evidence": "X-Frame-Options protects against framing, but the response has no frame-ancestors CSP, Referrer-Policy, Permissions-Policy, HSTS, or CSP-based XSS defense.", "artifacts": [ "evidence/headers.json" ], "suggestedFix": "Define defense-in-depth headers consistently at the edge for all status responses, including regional 403 pages.", "effort": "small" }, { "id": "F11", "pathId": "geo-notice", "url": "https://www.yahoo.co.jp/", "principleId": "be-internationalised", "principleCheckId": "lang-dir-and-logical-properties", "guidanceId": "translator", "guidanceCategory": "internationalization", "severity": "high", "confidence": "high", "summary": "The bilingual Japanese/English document has no document language declaration.", "evidence": "The DOM returned an empty html.lang and axe reported a serious html-has-lang violation. The page contains both Japanese and English sections but does not mark the English section with lang=\"en\".", "artifacts": [ "evidence/axe.json", "evidence/static-probe.json" ], "suggestedFix": "Set html lang=\"ja\" and mark the English article or its container with lang=\"en\"; use logical properties for translation-safe layout.", "effort": "trivial" }, { "id": "F12", "pathId": "geo-notice", "url": "https://www.yahoo.co.jp/", "principleId": "be-sustainable", "principleCheckId": "optimised-assets", "guidanceId": "deliver-optimized-decorative-images", "guidanceCategory": "performance", "severity": "low", "confidence": "high", "summary": "The only content image is oversized and uses a legacy PNG without responsive selection.", "evidence": "The image is naturally 1933 px wide but displayed at 170 px, has no srcset, and transfers 13 KB as PNG; the entire page transfers 73.8 KB.", "artifacts": [ "evidence/images.json", "evidence/home-summary.json" ], "suggestedFix": "Serve an appropriately dimensioned WebP/AVIF or optimized PNG at the actual display density and declare intrinsic dimensions.", "effort": "small" } ], "taskList": [ { "id": "T01", "title": "Restore zoom and correct document language/heading landmarks", "priority": 1, "findingIds": [ "F06", "F11", "F05" ], "guidanceId": "accessibility", "status": "open" }, { "id": "T02", "title": "Add complete browser security headers to the regional 403 response", "priority": 2, "findingIds": [ "F09", "F10" ], "guidanceId": "security", "status": "open" }, { "id": "T03", "title": "Raise link contrast and adapt colors for dark/high-contrast preferences", "priority": 3, "findingIds": [ "F01", "F02", "F04" ], "guidanceId": "dark-mode", "status": "open" }, { "id": "T04", "title": "Reduce the render path and optimize the oversized logo", "priority": 4, "findingIds": [ "F03", "F07", "F12" ], "guidanceId": "optimize-image-priority", "status": "open" }, { "id": "T05", "title": "Add a useful bilingual meta description", "priority": 5, "findingIds": [ "F08" ], "guidanceId": "html", "status": "open" } ], "budget": { "pathCount": 1, "auditPasses": 1 }, "agent": "pi", "runId": "2026-07-23T03-44-22-798Z" }