{ "url": "https://www.jra.go.jp", "auditedAt": "2026-07-19T04:48:49.546Z", "mode": "report", "status": "completed", "statusDetail": "Coverage-complete audit of six representative paths. Excluded: authenticated betting/account services on other origins, transaction completion, and every individual race/news detail page because one representative template per archetype was selected.", "page": { "appType": "mpa", "framework": "jQuery with Slick/Swiper and server-rendered HTML", "notes": "Japanese public horse-racing information service. Homepage uses a fixed-width desktop treatment and links to a separate smartphone site; inner templates are responsive." }, "evidenceUsed": [ "screenshot", "dom", "evaluate-probe", "layout-metrics", "discoverability", "trace", "har", "images", "headers", "cookies", "trackers", "secrets", "lighthouse", "axe-core", "heap-summary", "robots/sitemap/manifest fetch", "Modern Web Guidance 0.0.172" ], "guidanceConsulted": [ "dark-mode", "component-specific-light-dark-theme", "accessibility", "adapt-scrollbar-to-contrast-preferences", "same-document-transitions", "cross-document-transitions", "group-element-transitions", "faster-spa-view-transitions", "scrollytelling", "parallax-scroll-effects", "scroll-entry-exit-effects", "carousel-slide-effects", "physics-based-easing", "individual-transform-properties", "animate-element-entry-exit", "animate-to-from-top-layer", "animate-to-intrinsic-sizes", "dynamic-sibling-animations", "interactive-content-reveal", "pull-to-reveal", "swipe-to-remove", "shrinking-header-on-scroll", "scroll-progress-indicator", "scroll-position-aware-elements", "scroll-snap-realtime-feedback", "scroll-snap-state-sync", "scroll-target-on-load", "soft-edge-content-fade", "scrollability-affordance-hints", "anchor-positioning-tab-underline", "position-aware-tooltips", "interest-triggered-tooltips", "interest-triggered-action-previews", "directional-navigation-transitions", "carousel-snap-highlights", "navigation-drawer", "stack-drill-down", "persistent-app-tours", "persistent-toast-notifications", "light-dismiss-a-dialog", "platform-controls-dismiss-dialog", "declarative-dialog-popover-control", "animated-select-picker", "branded-select-styling", "brand-consistent-forms", "custom-select-picker-layouts", "rich-media-picker", "complex-shapes", "shaped-cutouts", "overflow-clipping-control", "visually-texture-content", "apply-webgl-shaders", "interactive-content-in-3d-scenes", "highlight-text-ranges", "prevent-text-wrapping", "customize-scrollbar-color-and-thickness", "export-html-media-from-canvas", "fluid-scaling", "calculate-with-intrinsic-sizes", "css-layout", "size-aware-styling", "content-based-styling", "child-state-based-styling", "design-token-reactivity", "dynamic-sibling-styling", "form-fields-automatically-fit-contents", "improve-text-layout-and-legibility", "forms", "accessible-error-announcement", "required-field-feedback", "validate-input-after-interaction", "identify-inp-causes", "schedule-tasks-by-priority", "optimize-preload-priority", "improve-next-page-load-performance", "interactions-in-complex-layouts", "performance", "visually-stable-font-fallbacks", "break-up-long-tasks", "identify-heavy-scripts", "optimize-script-priority", "defer-rendering-heavy-content", "defer-work-until-scroll-ends", "optimize-image-priority", "conditional-async-dependencies", "expose-canvas-content-to-browser-features", "move-dom-element-without-losing-state", "precise-text-alignment", "visually-stable-mixed-fonts", "css", "html", "reduce-style-repetition", "security", "privacy", "batch-analytics-events", "full-session-analytics", "calculate-total-foreground-time", "passkeys", "passkey-registration", "passkey-authentication", "passkey-reauthentication", "passkey-conditional-create", "passkey-management", "flicker-free-client-side-ab-testing", "consistent-cross-document-transitions", "stabilize-reactive-state", "resilient-context-menus-and-nested-dropdowns", "persistent-top-layer-ui", "detect-initial-visibility-state", "sequence-distributed-events", "translator", "language-detection", "support-global-calendar-systems", "capture-location-agnostic-data", "format-human-readable-durations", "manage-recurring-intervals", "calculate-event-differentials", "coordinate-global-events", "model-partial-time-concepts", "search-hidden-content", "select-menu-interaction", "style-parent-with-has", "autofill-address-form", "autofill-payment-form", "autofill-sign-in-form", "autofill-sign-up-form", "autofill-highlight-inputs", "deliver-optimized-decorative-images", "resolution-optimized-pseudo-elements", "deprioritize-background-fetches", "efficient-background-processing", "webmcp", "agentic-forms", "agentic-javascript-tools", "language-model", "summarizer" ], "artifacts": [ { "type": "screenshot", "path": "evidence/home-desktop.png", "caption": "Desktop first viewport", "findingIds": [ "F06" ] }, { "type": "screenshot", "path": "evidence/home-mobile.png", "caption": "Homepage at a 360x800 device viewport; the 1200px layout is scaled down", "condition": "viewport: 360x800", "findingIds": [ "F06", "F07", "F08", "F09", "F15", "F20" ] }, { "type": "screenshot", "path": "evidence/home-dark-reduced.png", "caption": "Homepage with dark scheme and reduced motion; light surfaces do not retint and carousel transition remains visible", "condition": "prefers-color-scheme: dark; prefers-reduced-motion: reduce", "findingIds": [ "F01", "F02" ] }, { "type": "layout", "path": "evidence/home-mobile-layout.json", "caption": "Homepage mobile layout and CLS/long-task metrics", "condition": "viewport: 360x800", "findingIds": [ "F07" ] }, { "type": "layout", "path": "evidence/news-mobile-layout.json", "caption": "News mobile layout metrics", "condition": "viewport: 360x800", "findingIds": [] }, { "type": "layout", "path": "evidence/calendar-mobile-layout.json", "caption": "Calendar mobile layout metrics", "condition": "viewport: 360x800", "findingIds": [] }, { "type": "layout", "path": "evidence/beginner-mobile-layout.json", "caption": "Beginner page mobile layout metrics", "condition": "viewport: 360x800", "findingIds": [] }, { "type": "screenshot", "path": "evidence/news-desktop.png", "caption": "News listing desktop viewport", "findingIds": [] }, { "type": "screenshot", "path": "evidence/calendar-desktop.png", "caption": "Race calendar desktop viewport", "findingIds": [] }, { "type": "screenshot", "path": "evidence/beginner-desktop.png", "caption": "Beginner guide desktop viewport", "findingIds": [] }, { "type": "screenshot", "path": "evidence/search-results-mobile.png", "caption": "Search results on mobile", "condition": "viewport: 360x800", "findingIds": [] }, { "type": "dom", "path": "evidence/home-dom.json", "caption": "Rendered homepage DOM and styles", "findingIds": [] }, { "type": "other", "path": "evidence/home-probe.json", "caption": "Homepage semantics, metadata, forms, focus and platform probe", "findingIds": [ "F03", "F07", "F08", "F15", "F20" ] }, { "type": "other", "path": "evidence/news-probe.json", "caption": "News semantics, metadata, forms and platform probe", "findingIds": [] }, { "type": "other", "path": "evidence/calendar-probe.json", "caption": "Calendar metadata and platform probe", "findingIds": [ "F19", "F21", "F22" ] }, { "type": "other", "path": "evidence/beginner-probe.json", "caption": "Beginner-page metadata and platform probe", "findingIds": [ "F19", "F22" ] }, { "type": "other", "path": "evidence/preferences-probe.json", "caption": "Computed dark/reduced-motion preference state", "findingIds": [ "F01" ] }, { "type": "other", "path": "evidence/css-feature-context.json", "caption": "Fetched CSS context for preference and forced-colors rules", "findingIds": [ "F02" ] }, { "type": "other", "path": "evidence/resource-dom-confirmation.json", "caption": "Head script and stylesheet placement, async/defer and type confirmation", "findingIds": [ "F04", "F11", "F12", "F18" ] }, { "type": "other", "path": "evidence/home-images.json", "caption": "Image dimensions, loading, resolution, format and alt audit", "findingIds": [ "F17", "F27" ] }, { "type": "har", "path": "evidence/home.har", "caption": "Homepage network capture", "findingIds": [ "F11", "F29" ] }, { "type": "har-summary", "path": "evidence/home-summary.json", "caption": "Compact homepage network signals", "findingIds": [ "F11", "F24", "F28", "F29" ] }, { "type": "trace", "path": "evidence/home-trace.json", "caption": "Homepage performance trace", "findingIds": [ "F10" ] }, { "type": "trace-summary", "path": "evidence/home-trace-summary.json", "caption": "Compact trace timings and blocking tasks", "findingIds": [ "F10" ] }, { "type": "lighthouse", "path": "evidence/lighthouse-home.json", "caption": "Lighthouse mobile audit of homepage", "findingIds": [ "F16" ] }, { "type": "lighthouse", "path": "evidence/lighthouse-news.json", "caption": "Lighthouse mobile audit of news listing", "findingIds": [ "F09", "F13", "F14", "F15" ] }, { "type": "other", "path": "evidence/lighthouse-summary.json", "caption": "Compact Lighthouse category, metric and failure summary", "findingIds": [ "F10", "F11", "F12", "F18", "F27" ] }, { "type": "other", "path": "evidence/axe-home.json", "caption": "axe-core homepage accessibility results", "findingIds": [ "F13", "F14" ] }, { "type": "other", "path": "evidence/headers.json", "caption": "Security response-header audit", "findingIds": [ "F23", "F25" ] }, { "type": "other", "path": "evidence/cookies.json", "caption": "Cookie security and lifetime audit", "findingIds": [ "F24", "F25" ] }, { "type": "other", "path": "evidence/trackers.json", "caption": "Third-party tracker enumeration", "findingIds": [ "F24", "F28" ] }, { "type": "other", "path": "evidence/secrets.json", "caption": "Client-side secret scan", "findingIds": [] }, { "type": "screenshot", "path": "evidence/discoverability-rendered.png", "caption": "Browser-rendered homepage", "findingIds": [ "F20" ] }, { "type": "screenshot", "path": "evidence/discoverability-crawler.png", "caption": "No-JavaScript crawler view", "findingIds": [] }, { "type": "other", "path": "evidence/search-overlay-probe.json", "caption": "Open search overlay semantics and focus state", "findingIds": [ "F05", "F14", "F26" ] }, { "type": "screenshot", "path": "evidence/search-overlay.png", "caption": "Homepage during search-overlay interaction", "findingIds": [ "F05" ] }, { "type": "other", "path": "evidence/search-results-probe.json", "caption": "Search result state probe", "findingIds": [] }, { "type": "other", "path": "evidence/404-probe.json", "caption": "Unknown-route recovery-state probe", "findingIds": [] }, { "type": "heap", "path": "evidence/heap-baseline.json", "caption": "Baseline homepage V8 heap summary", "findingIds": [] }, { "type": "heap", "path": "evidence/heap-post-search.json", "caption": "Heap summary after ten search-overlay open/close interactions", "findingIds": [] } ], "config": { "loaded": false }, "coverage": { "catalogVersion": "modern-web-guidance@0.0.172", "catalogChecksum": "sha256:78ccfdb2d483f4c57d9dafed80fd86c6265585a56457c8dcfddc254b80fb44d7", "expected": 58, "recorded": 58, "judged": 58, "blocked": 0, "notRun": 0, "missing": 0, "unknown": 0, "duplicates": 0, "complete": true }, "checkOutcomes": [ { "principleId": "respect-user-preferences", "checkId": "respects-color-scheme", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "The preference probe matched dark mode but reported color-scheme: normal and body text rgb(51,51,51); the emulated-dark screenshot retains white surfaces.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dark-reduced.png", "evidence/preferences-probe.json" ], "findingIds": [ "F01" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-reduced-motion", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "The CSS context shows the only reduced-motion rule comes from Font Awesome. The main carousel has no reduction rule, and the reduced-motion screenshot caught an in-progress dark cross-fade.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dark-reduced.png", "evidence/css-feature-context.json" ], "findingIds": [ "F02" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-contrast", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM/evaluate probe, flow, or objective tool evidence as appropriate", "evidence": "Forced-colors CSS explicitly retints active carousel dots and scrollbars; axe found no definite contrast violation (14 items required manual review), and desktop screenshots remain legible.", "pathIds": [ "home" ] }, { "principleId": "implement-natural-interactions", "checkId": "view-transitions", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "DOM/CSS probes found no authored view-transition-name or transition API usage across the representative templates.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-probe.json" ], "findingIds": [ "F03" ] }, { "principleId": "implement-natural-interactions", "checkId": "scroll-driven-animations", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "The resource probe found jQuery, Slick and Swiper, while the authored CSS probe found no animation-timeline usage.", "pathIds": [ "home" ], "artifacts": [ "evidence/resource-dom-confirmation.json" ], "findingIds": [ "F04" ] }, { "principleId": "implement-natural-interactions", "checkId": "physical-gestures", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM/evaluate probe, flow, or objective tool evidence as appropriate", "evidence": "Homepage carousel exposes swipe/pagination affordances and authored CSS includes overscroll behavior; no custom pointermove anti-pattern was observed in the resource/DOM probe.", "pathIds": [ "home" ] }, { "principleId": "provide-guided-navigation", "checkId": "scroll-state-aware-chrome", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM/evaluate probe, flow, or objective tool evidence as appropriate", "evidence": "Desktop and mobile screenshots show persistent global navigation, carousel position dots and horizontal scroll feedback for campaign/service shelves.", "pathIds": [ "home" ] }, { "principleId": "provide-guided-navigation", "checkId": "anchored-positioning", "status": "not-applicable", "confidence": "high", "method": "Recon-based applicability judgement across representative paths", "evidence": "No tooltip, callout or edge-sensitive anchored overlay was present on the representative paths; the only overlay is a centered full-page search modal.", "reason": "No tooltip, callout or edge-sensitive anchored overlay was present on the representative paths; the only overlay is a centered full-page search modal." }, { "principleId": "provide-guided-navigation", "checkId": "directs-attention", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM/evaluate probe, flow, or objective tool evidence as appropriate", "evidence": "News, calendar and beginner screenshots use breadcrumbs, highlighted current tabs/month and strong section headings to direct attention after navigation.", "pathIds": [ "home" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "no-intrusive-interruptions", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM/evaluate probe, flow, or objective tool evidence as appropriate", "evidence": "Initial-load screenshots show core content immediately with no consent, signup or promotional interstitial covering the viewport.", "pathIds": [ "home" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "semantic-dismissible-primitives", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "After opening search, the visible #modal is a DIV without role=dialog or aria-modal, and document.activeElement is BODY. No dialog or popover exists.", "pathIds": [ "home" ], "artifacts": [ "evidence/search-overlay-probe.json", "evidence/search-overlay.png" ], "findingIds": [ "F05" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "reduced-chrome", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "The desktop screenshot shows four dense navigation/header rows before content; the 360px capture scales that entire desktop chrome and its small labels into the viewport.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-desktop.png", "evidence/home-mobile.png" ], "findingIds": [ "F06" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "responsive-no-horizontal-scroll", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "The homepage declares meta viewport width=1200. At a 360x800 device viewport, layout reports a 1200 CSS-pixel viewport at scale 0.3, making the whole desktop page tiny rather than reflowing.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-mobile.png", "evidence/home-mobile-layout.json", "evidence/home-probe.json" ], "findingIds": [ "F07" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "component-level-responsiveness", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "Across four templates the CSS probes found zero container rules; the homepage instead forces width=1200 and links to a separate smartphone site.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-probe.json", "evidence/home-mobile.png" ], "findingIds": [ "F08" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "input-modality-aware", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "Lighthouse found 15px-high news links with less than the required safe spacing; dense scaled homepage controls are also visibly small at 360px.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-news.json", "evidence/home-mobile.png" ], "findingIds": [ "F09" ] }, { "principleId": "support-core-task-success", "checkId": "clear-purpose-and-primary-action", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM/evaluate probe, flow, or objective tool evidence as appropriate", "evidence": "The homepage first viewport identifies JRA and exposes race cards, odds, results, schedule, live coverage and betting login with explicit Japanese labels.", "pathIds": [ "home" ] }, { "principleId": "support-core-task-success", "checkId": "primary-flow-completion", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM/evaluate probe, flow, or objective tool evidence as appropriate", "evidence": "The news search form has a labelled query control and navigates to a branded search-results page; race calendar and beginner content routes loaded without authentication barriers.", "pathIds": [ "search" ] }, { "principleId": "support-core-task-success", "checkId": "clear-system-state-and-recovery", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM/evaluate probe, flow, or objective tool evidence as appropriate", "evidence": "An unknown route rendered a branded Forbidden state explaining likely causes and providing FAQ/contact and homepage recovery links.", "pathIds": [ "home" ] }, { "principleId": "be-fast-and-stable", "checkId": "good-core-web-vitals", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "Lighthouse measured homepage LCP 23.3s and news LCP 6.9s; the raw trace corroborated homepage LCP 6.80s, FCP 3.87s and 84.5ms TBT under a separate run.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-summary.json", "evidence/home-trace-summary.json", "evidence/home-trace.json" ], "findingIds": [ "F10" ] }, { "principleId": "be-fast-and-stable", "checkId": "visual-stability", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM/evaluate probe, flow, or objective tool evidence as appropriate", "evidence": "Observed CLS was 0.035 on home, 0 on news/calendar and 0.063 on beginner, all below the 0.1 good threshold in these runs.", "pathIds": [ "home" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-main-thread", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM/evaluate probe, flow, or objective tool evidence as appropriate", "evidence": "Trace total blocking time was 84.5ms with one 134.5ms long task; Lighthouse TBT was 170ms home and 120ms news, within the good threshold.", "pathIds": [ "home" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-resource-delivery", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "HAR recorded 159 requests and 4.84MB transferred, including 3.71MB images. DOM confirmation shows multiple synchronous head scripts; Lighthouse estimates 2.15s render-blocking savings and 3.8MB cache savings.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json", "evidence/home.har", "evidence/resource-dom-confirmation.json", "evidence/lighthouse-summary.json" ], "findingIds": [ "F11" ] }, { "principleId": "be-fast-and-stable", "checkId": "trim-unused-and-duplicate-code", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "Lighthouse estimates 301KiB unused JavaScript and 40KiB unused CSS on home, plus legacy JavaScript and unminified CSS.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-summary.json", "evidence/resource-dom-confirmation.json" ], "findingIds": [ "F12" ] }, { "principleId": "be-inclusive", "checkId": "names-roles-labels", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "axe found critical missing alt text on two meaningful images and a focusable element inside aria-hidden. Lighthouse on news found prohibited ARIA and broken tab role parent/child relationships.", "pathIds": [ "news" ], "artifacts": [ "evidence/axe-home.json", "evidence/lighthouse-news.json" ], "findingIds": [ "F13" ] }, { "principleId": "be-inclusive", "checkId": "sufficient-contrast", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM/evaluate probe, flow, or objective tool evidence as appropriate", "evidence": "axe produced no confirmed color-contrast violation; desktop screenshots show readable text/control contrast and forced-colors overrides exist for key carousel controls.", "pathIds": [ "home" ] }, { "principleId": "be-inclusive", "checkId": "structure-and-focus", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "axe/Lighthouse report no main landmark; news uses tabindex=1 and malformed tab/list roles. The search modal opens with focus left on BODY.", "pathIds": [ "news" ], "artifacts": [ "evidence/axe-home.json", "evidence/lighthouse-news.json", "evidence/search-overlay-probe.json" ], "findingIds": [ "F14" ] }, { "principleId": "be-inclusive", "checkId": "legible-text", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM/evaluate probe, flow, or objective tool evidence as appropriate", "evidence": "News and calendar desktop screenshots show readable Japanese text, clear hierarchy and comfortable line lengths in the principal content column.", "pathIds": [ "home" ] }, { "principleId": "be-inclusive", "checkId": "zoom-reflow-targets-and-media", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "meta viewport width=1200 shrinks content to 30% scale at 360px, and Lighthouse flags undersized news touch targets.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-mobile.png", "evidence/home-probe.json", "evidence/lighthouse-news.json" ], "findingIds": [ "F15" ] }, { "principleId": "follow-best-practices", "checkId": "no-console-errors", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "Lighthouse failed errors-in-console with one recorded browser error.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-home.json" ], "findingIds": [ "F16" ] }, { "principleId": "follow-best-practices", "checkId": "sound-document-and-assets", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "The image primitive found all 100 homepage images lacked width/height attributes; 45 were oversized and 69 had empty/missing alt (many decorative, but two were independently confirmed meaningful).", "pathIds": [ "home" ], "artifacts": [ "evidence/home-images.json" ], "findingIds": [ "F17" ] }, { "principleId": "follow-best-practices", "checkId": "browser-platform-hygiene", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "Lighthouse reports Inspector cookie issues, 33KiB legacy-JavaScript savings and third-party-cookie usage; the page loads jQuery 3.5.1 and compatibility shims synchronously.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-summary.json", "evidence/resource-dom-confirmation.json" ], "findingIds": [ "F18" ] }, { "principleId": "be-discoverable", "checkId": "title-and-description", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "The metadata probes found no description on the race calendar or beginner guide, although titles were present.", "pathIds": [ "calendar" ], "artifacts": [ "evidence/calendar-probe.json", "evidence/beginner-probe.json" ], "findingIds": [ "F19" ] }, { "principleId": "be-discoverable", "checkId": "crawlable-and-mobile-friendly", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "The homepage viewport is width=1200 and is rendered at scale 0.3 on a 360px device; Lighthouse SEO is 0.85 despite crawlable raw HTML.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-mobile.png", "evidence/home-probe.json", "evidence/discoverability-rendered.png" ], "findingIds": [ "F20" ] }, { "principleId": "be-discoverable", "checkId": "canonical-and-indexing-signals", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "The calendar has no canonical link, and a direct /sitemap.xml request returned HTTP 403 while robots.txt allows crawling.", "pathIds": [ "calendar" ], "artifacts": [ "evidence/calendar-probe.json" ], "findingIds": [ "F21" ] }, { "principleId": "be-discoverable", "checkId": "structured-and-shareable-metadata", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "All four page probes found zero JSON-LD; the calendar has no Open Graph metadata and the beginner OG description is empty.", "pathIds": [ "calendar" ], "artifacts": [ "evidence/calendar-probe.json", "evidence/beginner-probe.json" ], "findingIds": [ "F22" ] }, { "principleId": "be-private-and-secure", "checkId": "secure-transport-and-headers", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "HTTPS, HSTS, nosniff and SAMEORIGIN are present, but the header audit found no Content-Security-Policy, Referrer-Policy or Permissions-Policy.", "pathIds": [ "home" ], "artifacts": [ "evidence/headers.json" ], "findingIds": [ "F23" ] }, { "principleId": "be-private-and-secure", "checkId": "data-minimisation-and-third-parties", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "The page contacted 13 third-party origins and five known tracker domains. HAR attributes 26 requests and 776,864 bytes to third parties; no consent control was found.", "pathIds": [ "home" ], "artifacts": [ "evidence/trackers.json", "evidence/home-summary.json", "evidence/cookies.json" ], "findingIds": [ "F24" ] }, { "principleId": "be-private-and-secure", "checkId": "in-context-permissions-and-modern-auth", "status": "not-applicable", "confidence": "high", "method": "Recon-based applicability judgement across representative paths", "evidence": "Audited JRA pages contain no authentication or permission flow; betting login is a separately hosted service outside this audit scope, and no permission prompt fired on load.", "reason": "Audited JRA pages contain no authentication or permission flow; betting login is a separately hosted service outside this audit scope, and no permission prompt fired on load." }, { "principleId": "be-private-and-secure", "checkId": "defensive-browser-policies", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "All five observed first-party analytics cookies lacked Secure; four used SameSite=None and two persisted for 400 days. CSP, Referrer-Policy and Permissions-Policy were absent.", "pathIds": [ "home" ], "artifacts": [ "evidence/cookies.json", "evidence/headers.json" ], "findingIds": [ "F25" ] }, { "principleId": "be-resilient", "checkId": "progressive-enhancement", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM/evaluate probe, flow, or objective tool evidence as appropriate", "evidence": "Discoverability fetch returned HTTP 200 with 96% rendered-word coverage in raw HTML; crawler screenshot retains the main content and the site is not a JS shell.", "pathIds": [ "home" ] }, { "principleId": "be-resilient", "checkId": "resilient-runtime-behaviour", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "The custom search overlay opens without a dialog role or aria-modal and focus falls to BODY, so keyboard and assistive-technology state is not preserved.", "pathIds": [ "home" ], "artifacts": [ "evidence/search-overlay-probe.json" ], "findingIds": [ "F26" ] }, { "principleId": "be-resilient", "checkId": "offline-and-installable", "status": "not-applicable", "confidence": "high", "method": "Recon-based applicability judgement across representative paths", "evidence": "The public information site does not declare installable/offline intent; its manifest explicitly uses display: browser and no service worker controlled the page.", "reason": "The public information site does not declare installable/offline intent; its manifest explicitly uses display: browser and no service worker controlled the page." }, { "principleId": "be-resilient", "checkId": "network-and-http-failure-states", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM/evaluate probe, flow, or objective tool evidence as appropriate", "evidence": "The unknown-route probe shows explicit Forbidden messaging plus FAQ/contact and homepage recovery links instead of a blank or raw server error.", "pathIds": [ "failure" ] }, { "principleId": "be-internationalised", "checkId": "lang-dir-and-logical-properties", "status": "not-applicable", "confidence": "high", "method": "Recon-based applicability judgement across representative paths", "evidence": "The audited service is explicitly Japanese-language with a separate external English site; no same-document locale or RTL presentation is offered or declared.", "reason": "The audited service is explicitly Japanese-language with a separate external English site; no same-document locale or RTL presentation is offered or declared." }, { "principleId": "be-internationalised", "checkId": "locale-aware-data", "status": "not-applicable", "confidence": "high", "method": "Recon-based applicability judgement across representative paths", "evidence": "The selected pages target a Japanese locale and expose no locale selector or locale-varying input; evaluating alternate locale formatting is outside the site’s observed intent.", "reason": "The selected pages target a Japanese locale and expose no locale selector or locale-varying input; evaluating alternate locale formatting is outside the site’s observed intent." }, { "principleId": "be-internationalised", "checkId": "time-zone-correctness", "status": "not-applicable", "confidence": "high", "method": "Recon-based applicability judgement across representative paths", "evidence": "No user-scheduled cross-time-zone event or time-zone input exists on the representative pages; calendar data is Japan-specific.", "reason": "No user-scheduled cross-time-zone event or time-zone input exists on the representative pages; calendar data is Japan-specific." }, { "principleId": "be-trustworthy", "checkId": "no-dark-patterns", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM/evaluate probe, flow, or objective tool evidence as appropriate", "evidence": "Screenshots and inspected flows show no confirmshaming, forced continuity, disguised advertisements or obstructed cancellation on the audited public-content paths.", "pathIds": [ "home" ] }, { "principleId": "be-trustworthy", "checkId": "humane-error-handling", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM/evaluate probe, flow, or objective tool evidence as appropriate", "evidence": "The required global-search field is labelled, uses native required validation, and the failure route explains the problem and provides recovery actions.", "pathIds": [ "home" ] }, { "principleId": "be-trustworthy", "checkId": "trustworthy-input-assistance", "status": "not-applicable", "confidence": "high", "method": "Recon-based applicability judgement across representative paths", "evidence": "The audited same-origin forms are search-only and collect no identity, address, payment or sign-in data eligible for autofill tokens.", "reason": "The audited same-origin forms are search-only and collect no identity, address, payment or sign-in data eligible for autofill tokens." }, { "principleId": "be-trustworthy", "checkId": "safe-commercial-and-account-flows", "status": "not-applicable", "confidence": "high", "method": "Recon-based applicability judgement across representative paths", "evidence": "Commercial betting and account authentication are hosted on separate origins and were not entered; public JRA content itself contains no checkout/subscription/account flow.", "reason": "Commercial betting and account authentication are hosted on separate origins and were not entered; public JRA content itself contains no checkout/subscription/account flow." }, { "principleId": "be-sustainable", "checkId": "optimised-assets", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "The image audit found 45 oversized images, 38 legacy-format images, 34 without responsive sources and 51 below-fold images without lazy loading. Lighthouse estimates 2.36MB image savings.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-images.json", "evidence/lighthouse-summary.json" ], "findingIds": [ "F27" ] }, { "principleId": "be-sustainable", "checkId": "no-wasteful-work", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "The homepage initiates 26 third-party requests and loads multiple analytics/advertising stacks, including 776KB third-party transfer, without an observed consent gate.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json", "evidence/trackers.json" ], "findingIds": [ "F28" ] }, { "principleId": "be-sustainable", "checkId": "third-party-and-media-budget", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence review against the mapped Modern Web Guidance", "evidence": "HAR measured 4.84MB over 159 requests, with 3.71MB images and 776KB third-party bytes; the largest two hero images alone transfer 613KB and 541KB.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json", "evidence/home.har" ], "findingIds": [ "F29" ] }, { "principleId": "be-agent-ready", "checkId": "structured-agent-capabilities", "status": "not-applicable", "confidence": "high", "method": "Recon-based applicability judgement across representative paths", "evidence": "No developer intent for agent-executable transactions is declared; this public information site remains crawler-readable, but WebMCP capability registration is contextual and not required here.", "reason": "No developer intent for agent-executable transactions is declared; this public information site remains crawler-readable, but WebMCP capability registration is contextual and not required here." }, { "principleId": "be-agent-ready", "checkId": "on-device-inference", "status": "not-applicable", "confidence": "high", "method": "Recon-based applicability judgement across representative paths", "evidence": "No summarisation, generation or other user-facing inference use case is present on the selected paths, so built-in on-device AI is not applicable.", "reason": "No summarisation, generation or other user-facing inference use case is present on the selected paths, so built-in on-device AI is not applicable." }, { "principleId": "be-memory-efficient", "checkId": "no-leak-under-repeated-interaction", "status": "pass", "confidence": "medium", "method": "Direct screenshot, DOM/evaluate probe, flow, or objective tool evidence as appropriate", "evidence": "After ten search-overlay open/close attempts, heap self-size increased 3.3% (22.87MB to 23.62MB), nodes 1.6% and closures 0.4%; no monotonic detached-node signal appeared in summary constructors.", "pathIds": [ "home" ] }, { "principleId": "be-memory-efficient", "checkId": "bounded-footprint", "status": "pass", "confidence": "medium", "method": "Direct screenshot, DOM/evaluate probe, flow, or objective tool evidence as appropriate", "evidence": "The loaded media-rich homepage heap summary was 22.87MB self-size with 405,045 nodes; code/objects were bounded and proportionate to the unusually dense page, though network/DOM reduction remains desirable.", "pathIds": [ "home" ] }, { "principleId": "be-memory-efficient", "checkId": "no-detached-dom-or-unbounded-listeners", "status": "pass", "confidence": "medium", "method": "Direct screenshot, DOM/evaluate probe, flow, or objective tool evidence as appropriate", "evidence": "Baseline/post summaries contain no Detached* constructor among leading retained populations; Array, Map, Set and closure counts remained nearly flat after repeated overlay interaction.", "pathIds": [ "home" ] } ], "principleOutcomes": [ { "principleId": "respect-user-preferences", "expectation": "default", "status": "issues", "findingIds": [ "F01", "F02" ] }, { "principleId": "implement-natural-interactions", "expectation": "default", "status": "issues", "findingIds": [ "F03", "F04" ] }, { "principleId": "provide-guided-navigation", "expectation": "default", "status": "pass" }, { "principleId": "maximize-content-reduce-noise", "expectation": "default", "status": "issues", "findingIds": [ "F05", "F06" ] }, { "principleId": "adapt-to-the-form-factor", "expectation": "default", "status": "issues", "findingIds": [ "F07", "F08", "F09" ] }, { "principleId": "support-core-task-success", "expectation": "default", "status": "pass" }, { "principleId": "be-fast-and-stable", "expectation": "default", "status": "issues", "findingIds": [ "F10", "F11", "F12" ] }, { "principleId": "be-inclusive", "expectation": "default", "status": "issues", "findingIds": [ "F13", "F14", "F15" ] }, { "principleId": "follow-best-practices", "expectation": "default", "status": "issues", "findingIds": [ "F16", "F17", "F18" ] }, { "principleId": "be-discoverable", "expectation": "default", "status": "issues", "findingIds": [ "F19", "F20", "F21", "F22" ] }, { "principleId": "be-private-and-secure", "expectation": "default", "status": "issues", "findingIds": [ "F23", "F24", "F25" ] }, { "principleId": "be-resilient", "expectation": "contextual", "status": "issues", "findingIds": [ "F26" ] }, { "principleId": "be-internationalised", "expectation": "contextual", "status": "not-applicable", "reason": "The audited service is explicitly Japanese-language with a separate external English site; no same-document locale or RTL presentation is offered or declared." }, { "principleId": "be-trustworthy", "expectation": "default", "status": "pass" }, { "principleId": "be-sustainable", "expectation": "contextual", "status": "issues", "findingIds": [ "F27", "F28", "F29" ] }, { "principleId": "be-agent-ready", "expectation": "contextual", "status": "not-applicable", "reason": "No developer intent for agent-executable transactions is declared; this public information site remains crawler-readable, but WebMCP capability registration is contextual and not required here." }, { "principleId": "be-memory-efficient", "expectation": "default", "status": "pass" } ], "paths": [ { "id": "home", "description": "Primary race-information landing page and global navigation; tested desktop, fixed-width mobile rendering, dark/reduced-motion preferences, search overlay, performance, privacy, accessibility and memory.", "url": "https://www.jra.go.jp/", "conditions": [ "1440x900", "360x800", "prefers-color-scheme: dark", "prefers-reduced-motion: reduce", "keyboard focus", "search overlay", "10 repeated open/close interactions" ], "result": "issues" }, { "id": "news", "description": "News listing template and news search entry point; represents content listings and category tabs.", "url": "https://www.jra.go.jp/news/", "conditions": [ "1440x900", "360x800", "Lighthouse mobile" ], "result": "issues" }, { "id": "calendar", "description": "Race-calendar/data table template, selected because dense schedules are a high-risk responsive and metadata surface.", "url": "https://www.jra.go.jp/keiba/calendar/", "conditions": [ "1440x900", "360x800" ], "result": "issues" }, { "id": "beginner", "description": "Beginner guide/content landing page, representing educational content and a key path for new users.", "url": "https://www.jra.go.jp/kouza/beginner/", "conditions": [ "1440x900", "360x800" ], "result": "issues" }, { "id": "search", "description": "News search results journey reached by the search form action with a representative Japanese query.", "url": "https://www.jra.go.jp/search/news/index.html?q=%E7%AB%B6%E9%A6%AC", "conditions": [ "360x800" ], "result": "pass" }, { "id": "failure", "description": "Unknown-route recovery state; server returned a branded Forbidden page with explanation, contact and home links.", "url": "https://www.jra.go.jp/this-path-does-not-exist-audit", "conditions": [ "default" ], "result": "pass" } ], "findings": [ { "id": "F01", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "respect-user-preferences", "principleCheckId": "respects-color-scheme", "guidanceId": "dark-mode", "severity": "medium", "confidence": "high", "summary": "No dark color-scheme adaptation", "evidence": "The preference probe matched dark mode but reported color-scheme: normal and body text rgb(51,51,51); the emulated-dark screenshot retains white surfaces.", "artifacts": [ "evidence/home-dark-reduced.png", "evidence/preferences-probe.json" ], "suggestedFix": "Declare color-scheme and derive surfaces/text from prefers-color-scheme or light-dark().", "effort": "small" }, { "id": "F02", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "respect-user-preferences", "principleCheckId": "respects-reduced-motion", "guidanceId": "accessibility", "severity": "medium", "confidence": "high", "summary": "Primary carousel does not fully respect reduced motion", "evidence": "The CSS context shows the only reduced-motion rule comes from Font Awesome. The main carousel has no reduction rule, and the reduced-motion screenshot caught an in-progress dark cross-fade.", "artifacts": [ "evidence/home-dark-reduced.png", "evidence/css-feature-context.json" ], "suggestedFix": "Disable autoplay and collapse nonessential carousel transitions under prefers-reduced-motion: reduce.", "effort": "small" }, { "id": "F03", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "implement-natural-interactions", "principleCheckId": "view-transitions", "guidanceId": "same-document-transitions", "severity": "low", "confidence": "high", "summary": "Page and state changes do not use transition continuity", "evidence": "DOM/CSS probes found no authored view-transition-name or transition API usage across the representative templates.", "artifacts": [ "evidence/home-probe.json" ], "suggestedFix": "Use same-document or cross-document View Transitions for meaningful route/state continuity, with reduced-motion handling.", "effort": "medium" }, { "id": "F04", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "implement-natural-interactions", "principleCheckId": "scroll-driven-animations", "guidanceId": "scroll-entry-exit-effects", "severity": "low", "confidence": "high", "summary": "Carousel and scroll effects rely on legacy libraries rather than scroll timelines", "evidence": "The resource probe found jQuery, Slick and Swiper, while the authored CSS probe found no animation-timeline usage.", "artifacts": [ "evidence/resource-dom-confirmation.json" ], "suggestedFix": "For scroll-linked effects, replace main-thread/library coupling with CSS scroll-driven animation where it improves feedback.", "effort": "medium" }, { "id": "F05", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "maximize-content-reduce-noise", "principleCheckId": "semantic-dismissible-primitives", "guidanceId": "declarative-dialog-popover-control", "severity": "high", "confidence": "high", "summary": "Search modal is a non-semantic fixed div and loses focus", "evidence": "After opening search, the visible #modal is a DIV without role=dialog or aria-modal, and document.activeElement is BODY. No dialog or popover exists.", "artifacts": [ "evidence/search-overlay-probe.json", "evidence/search-overlay.png" ], "suggestedFix": "Use with showModal(), a labelled heading, focus placement/restoration and platform Escape dismissal.", "effort": "medium" }, { "id": "F06", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "maximize-content-reduce-noise", "principleCheckId": "reduced-chrome", "guidanceId": "navigation-drawer", "severity": "medium", "confidence": "high", "summary": "Navigation chrome overwhelms the first viewport", "evidence": "The desktop screenshot shows four dense navigation/header rows before content; the 360px capture scales that entire desktop chrome and its small labels into the viewport.", "artifacts": [ "evidence/home-desktop.png", "evidence/home-mobile.png" ], "suggestedFix": "Prioritise the race tasks and move secondary destinations into a compact, progressively disclosed menu.", "effort": "medium" }, { "id": "F07", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "adapt-to-the-form-factor", "principleCheckId": "responsive-no-horizontal-scroll", "guidanceId": "fluid-scaling", "severity": "high", "confidence": "high", "summary": "Homepage uses a fixed 1200px viewport on phones", "evidence": "The homepage declares meta viewport width=1200. At a 360x800 device viewport, layout reports a 1200 CSS-pixel viewport at scale 0.3, making the whole desktop page tiny rather than reflowing.", "artifacts": [ "evidence/home-mobile.png", "evidence/home-mobile-layout.json", "evidence/home-probe.json" ], "suggestedFix": "Use width=device-width, initial-scale=1 and responsive layout rules instead of shrinking a fixed desktop canvas.", "effort": "large" }, { "id": "F08", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "adapt-to-the-form-factor", "principleCheckId": "component-level-responsiveness", "guidanceId": "size-aware-styling", "severity": "medium", "confidence": "high", "summary": "Components do not adapt to their available container", "evidence": "Across four templates the CSS probes found zero container rules; the homepage instead forces width=1200 and links to a separate smartphone site.", "artifacts": [ "evidence/home-probe.json", "evidence/home-mobile.png" ], "suggestedFix": "Introduce container-type on reusable modules and @container rules for cards, nav and schedule content.", "effort": "large" }, { "id": "F09", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "adapt-to-the-form-factor", "principleCheckId": "input-modality-aware", "guidanceId": "accessibility", "severity": "medium", "confidence": "high", "summary": "Some mobile targets are too small or tightly spaced", "evidence": "Lighthouse found 15px-high news links with less than the required safe spacing; dense scaled homepage controls are also visibly small at 360px.", "artifacts": [ "evidence/lighthouse-news.json", "evidence/home-mobile.png" ], "suggestedFix": "Give interactive controls at least 24x24 CSS pixels of target area, preferably 44x44 for primary touch actions, while retaining :focus-visible styles.", "effort": "medium" }, { "id": "F10", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "be-fast-and-stable", "principleCheckId": "good-core-web-vitals", "guidanceId": "optimize-image-priority", "severity": "high", "confidence": "high", "summary": "Cold-load LCP is far outside the good threshold", "evidence": "Lighthouse measured homepage LCP 23.3s and news LCP 6.9s; the raw trace corroborated homepage LCP 6.80s, FCP 3.87s and 84.5ms TBT under a separate run.", "artifacts": [ "evidence/lighthouse-summary.json", "evidence/home-trace-summary.json", "evidence/home-trace.json" ], "suggestedFix": "Prioritise the LCP resource, reduce server/document latency and remove blocking dependencies before the hero/content.", "effort": "large" }, { "id": "F11", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "be-fast-and-stable", "principleCheckId": "efficient-resource-delivery", "guidanceId": "optimize-script-priority", "severity": "high", "confidence": "high", "summary": "The homepage ships a large, blocking resource graph", "evidence": "HAR recorded 159 requests and 4.84MB transferred, including 3.71MB images. DOM confirmation shows multiple synchronous head scripts; Lighthouse estimates 2.15s render-blocking savings and 3.8MB cache savings.", "artifacts": [ "evidence/home-summary.json", "evidence/home.har", "evidence/resource-dom-confirmation.json", "evidence/lighthouse-summary.json" ], "suggestedFix": "Defer noncritical scripts, consolidate critical CSS, set durable cache headers and prioritise only the LCP asset.", "effort": "large" }, { "id": "F12", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "be-fast-and-stable", "principleCheckId": "trim-unused-and-duplicate-code", "guidanceId": "identify-heavy-scripts", "severity": "medium", "confidence": "high", "summary": "Large amounts of CSS and JavaScript are unused on initial load", "evidence": "Lighthouse estimates 301KiB unused JavaScript and 40KiB unused CSS on home, plus legacy JavaScript and unminified CSS.", "artifacts": [ "evidence/lighthouse-summary.json", "evidence/resource-dom-confirmation.json" ], "suggestedFix": "Code-split by template, remove legacy shims/plugins where native platform features suffice, and load analytics after consent/need.", "effort": "large" }, { "id": "F13", "pathId": "news", "url": "https://www.jra.go.jp/news/", "principleId": "be-inclusive", "principleCheckId": "names-roles-labels", "guidanceId": "accessibility", "severity": "high", "confidence": "high", "summary": "Interactive and image semantics are invalid or missing", "evidence": "axe found critical missing alt text on two meaningful images and a focusable element inside aria-hidden. Lighthouse on news found prohibited ARIA and broken tab role parent/child relationships.", "artifacts": [ "evidence/axe-home.json", "evidence/lighthouse-news.json" ], "suggestedFix": "Repair the tab pattern, remove focusability from hidden slides and add meaningful alt or explicit decorative treatment.", "effort": "medium" }, { "id": "F14", "pathId": "news", "url": "https://www.jra.go.jp/news/", "principleId": "be-inclusive", "principleCheckId": "structure-and-focus", "guidanceId": "accessibility", "severity": "high", "confidence": "high", "summary": "Pages lack main landmarks and contain broken focus structure", "evidence": "axe/Lighthouse report no main landmark; news uses tabindex=1 and malformed tab/list roles. The search modal opens with focus left on BODY.", "artifacts": [ "evidence/axe-home.json", "evidence/lighthouse-news.json", "evidence/search-overlay-probe.json" ], "suggestedFix": "Add
, keep natural tabindex order, implement the ARIA tabs pattern correctly and manage dialog focus.", "effort": "medium" }, { "id": "F15", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "be-inclusive", "principleCheckId": "zoom-reflow-targets-and-media", "guidanceId": "fluid-scaling", "severity": "high", "confidence": "high", "summary": "The homepage does not reflow at a phone-sized viewport", "evidence": "meta viewport width=1200 shrinks content to 30% scale at 360px, and Lighthouse flags undersized news touch targets.", "artifacts": [ "evidence/home-mobile.png", "evidence/home-probe.json", "evidence/lighthouse-news.json" ], "suggestedFix": "Adopt device-width responsive reflow and enlarge/space touch targets without disabling zoom.", "effort": "large" }, { "id": "F16", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "follow-best-practices", "principleCheckId": "no-console-errors", "guidanceId": "html", "severity": "low", "confidence": "high", "summary": "Homepage logs a browser console error", "evidence": "Lighthouse failed errors-in-console with one recorded browser error.", "artifacts": [ "evidence/lighthouse-home.json" ], "suggestedFix": "Fix the originating request/script error and keep production console error-free.", "effort": "small" }, { "id": "F17", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "follow-best-practices", "principleCheckId": "sound-document-and-assets", "guidanceId": "html", "severity": "medium", "confidence": "high", "summary": "Images omit intrinsic dimensions at scale", "evidence": "The image primitive found all 100 homepage images lacked width/height attributes; 45 were oversized and 69 had empty/missing alt (many decorative, but two were independently confirmed meaningful).", "artifacts": [ "evidence/home-images.json" ], "suggestedFix": "Emit intrinsic width/height or aspect-ratio and correctly classify decorative versus informative images.", "effort": "medium" }, { "id": "F18", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "follow-best-practices", "principleCheckId": "browser-platform-hygiene", "guidanceId": "html", "severity": "medium", "confidence": "high", "summary": "Legacy and cookie issues surface in DevTools", "evidence": "Lighthouse reports Inspector cookie issues, 33KiB legacy-JavaScript savings and third-party-cookie usage; the page loads jQuery 3.5.1 and compatibility shims synchronously.", "artifacts": [ "evidence/lighthouse-summary.json", "evidence/resource-dom-confirmation.json" ], "suggestedFix": "Remove obsolete compatibility code, update dependencies and resolve browser Issues-panel warnings.", "effort": "large" }, { "id": "F19", "pathId": "calendar", "url": "https://www.jra.go.jp/keiba/calendar/", "principleId": "be-discoverable", "principleCheckId": "title-and-description", "guidanceId": "html", "severity": "medium", "confidence": "high", "summary": "Important content templates omit meta descriptions", "evidence": "The metadata probes found no description on the race calendar or beginner guide, although titles were present.", "artifacts": [ "evidence/calendar-probe.json", "evidence/beginner-probe.json" ], "suggestedFix": "Add concise unique descriptions matching each page purpose.", "effort": "small" }, { "id": "F20", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "be-discoverable", "principleCheckId": "crawlable-and-mobile-friendly", "guidanceId": "fluid-scaling", "severity": "high", "confidence": "high", "summary": "The canonical homepage is not mobile-friendly", "evidence": "The homepage viewport is width=1200 and is rendered at scale 0.3 on a 360px device; Lighthouse SEO is 0.85 despite crawlable raw HTML.", "artifacts": [ "evidence/home-mobile.png", "evidence/home-probe.json", "evidence/discoverability-rendered.png" ], "suggestedFix": "Serve a responsive canonical page with device-width viewport rather than relying on a separate smartphone URL.", "effort": "large" }, { "id": "F21", "pathId": "calendar", "url": "https://www.jra.go.jp/keiba/calendar/", "principleId": "be-discoverable", "principleCheckId": "canonical-and-indexing-signals", "guidanceId": "html", "severity": "medium", "confidence": "high", "summary": "Indexing signals are incomplete across templates", "evidence": "The calendar has no canonical link, and a direct /sitemap.xml request returned HTTP 403 while robots.txt allows crawling.", "artifacts": [ "evidence/calendar-probe.json" ], "suggestedFix": "Add self-referential canonicals to indexable templates and publish an accessible sitemap index referenced from robots.txt.", "effort": "small" }, { "id": "F22", "pathId": "calendar", "url": "https://www.jra.go.jp/keiba/calendar/", "principleId": "be-discoverable", "principleCheckId": "structured-and-shareable-metadata", "guidanceId": "html", "severity": "low", "confidence": "high", "summary": "Structured and social metadata coverage is inconsistent", "evidence": "All four page probes found zero JSON-LD; the calendar has no Open Graph metadata and the beginner OG description is empty.", "artifacts": [ "evidence/calendar-probe.json", "evidence/beginner-probe.json" ], "suggestedFix": "Add accurate schema.org JSON-LD and complete Open Graph metadata for major templates.", "effort": "medium" }, { "id": "F23", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "be-private-and-secure", "principleCheckId": "secure-transport-and-headers", "guidanceId": "security", "guidanceCategory": "security", "severity": "high", "confidence": "high", "summary": "Sensitive browser policy headers are missing", "evidence": "HTTPS, HSTS, nosniff and SAMEORIGIN are present, but the header audit found no Content-Security-Policy, Referrer-Policy or Permissions-Policy.", "artifacts": [ "evidence/headers.json" ], "suggestedFix": "Deploy a nonce/hash-based CSP, strict referrer policy and least-privilege permissions policy; test in report-only first.", "effort": "medium" }, { "id": "F24", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "be-private-and-secure", "principleCheckId": "data-minimisation-and-third-parties", "guidanceId": "privacy", "guidanceCategory": "privacy", "severity": "high", "confidence": "high", "summary": "Tracking starts with a broad third-party footprint", "evidence": "The page contacted 13 third-party origins and five known tracker domains. HAR attributes 26 requests and 776,864 bytes to third parties; no consent control was found.", "artifacts": [ "evidence/trackers.json", "evidence/home-summary.json", "evidence/cookies.json" ], "suggestedFix": "Minimise vendors/events, delay optional tracking until a valid user choice, and document data purposes and retention.", "effort": "large" }, { "id": "F25", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "be-private-and-secure", "principleCheckId": "defensive-browser-policies", "guidanceId": "security", "guidanceCategory": "security", "severity": "high", "confidence": "high", "summary": "Cookie and policy defenses are incomplete", "evidence": "All five observed first-party analytics cookies lacked Secure; four used SameSite=None and two persisted for 400 days. CSP, Referrer-Policy and Permissions-Policy were absent.", "artifacts": [ "evidence/cookies.json", "evidence/headers.json" ], "suggestedFix": "Mark HTTPS cookies Secure, avoid SameSite=None unless required, shorten retention and add defensive response policies.", "effort": "medium" }, { "id": "F26", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "be-resilient", "principleCheckId": "resilient-runtime-behaviour", "guidanceId": "persistent-top-layer-ui", "severity": "medium", "confidence": "high", "summary": "Overlay runtime behavior is not robust for keyboard users", "evidence": "The custom search overlay opens without a dialog role or aria-modal and focus falls to BODY, so keyboard and assistive-technology state is not preserved.", "artifacts": [ "evidence/search-overlay-probe.json" ], "suggestedFix": "Use the native dialog lifecycle and explicitly restore focus to the invoking search control on close.", "effort": "medium" }, { "id": "F27", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "be-sustainable", "principleCheckId": "optimised-assets", "guidanceId": "deliver-optimized-decorative-images", "severity": "high", "confidence": "high", "summary": "Image delivery wastes substantial bandwidth", "evidence": "The image audit found 45 oversized images, 38 legacy-format images, 34 without responsive sources and 51 below-fold images without lazy loading. Lighthouse estimates 2.36MB image savings.", "artifacts": [ "evidence/home-images.json", "evidence/lighthouse-summary.json" ], "suggestedFix": "Generate right-sized AVIF/WebP variants, use srcset/sizes and lazy-load below-fold media while prioritising only the LCP image.", "effort": "large" }, { "id": "F28", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "be-sustainable", "principleCheckId": "no-wasteful-work", "guidanceId": "batch-analytics-events", "severity": "medium", "confidence": "high", "summary": "Optional tracking creates wasteful background work", "evidence": "The homepage initiates 26 third-party requests and loads multiple analytics/advertising stacks, including 776KB third-party transfer, without an observed consent gate.", "artifacts": [ "evidence/home-summary.json", "evidence/trackers.json" ], "suggestedFix": "Remove duplicate measurement stacks, batch essential analytics and defer background work.", "effort": "large" }, { "id": "F29", "pathId": "home", "url": "https://www.jra.go.jp/", "principleId": "be-sustainable", "principleCheckId": "third-party-and-media-budget", "guidanceId": "deprioritize-background-fetches", "severity": "high", "confidence": "high", "summary": "Page and third-party weight exceed a proportionate budget", "evidence": "HAR measured 4.84MB over 159 requests, with 3.71MB images and 776KB third-party bytes; the largest two hero images alone transfer 613KB and 541KB.", "artifacts": [ "evidence/home-summary.json", "evidence/home.har" ], "suggestedFix": "Set template budgets for total, image and third-party bytes and enforce them in CI.", "effort": "large" } ], "taskList": [ { "id": "T01", "title": "Replace the fixed-width homepage with a responsive canonical layout", "priority": 1, "findingIds": [ "F06", "F07", "F08", "F09", "F15", "F20" ], "guidanceId": "fluid-scaling", "status": "open" }, { "id": "T02", "title": "Cut LCP and transfer cost by fixing image and critical-resource delivery", "priority": 2, "findingIds": [ "F10", "F11", "F12", "F17", "F27", "F29" ], "guidanceId": "optimize-image-priority", "status": "open" }, { "id": "T03", "title": "Repair landmarks, tabs, image alternatives, targets and modal focus", "priority": 3, "findingIds": [ "F05", "F13", "F14" ], "guidanceId": "accessibility", "status": "open" }, { "id": "T04", "title": "Minimise trackers and harden cookies and browser policies", "priority": 4, "findingIds": [ "F23", "F24", "F25", "F28" ], "guidanceId": "privacy", "status": "open" }, { "id": "T05", "title": "Complete canonical, description, sitemap and structured metadata", "priority": 5, "findingIds": [ "F19", "F21", "F22" ], "guidanceId": "html", "status": "open" }, { "id": "T06", "title": "Respect dark and reduced-motion preferences", "priority": 6, "findingIds": [ "F01", "F02" ], "guidanceId": "dark-mode", "status": "open" }, { "id": "T07", "title": "Modernise runtime interactions and remove browser errors/legacy code", "priority": 7, "findingIds": [ "F03", "F04", "F16", "F18", "F26" ], "guidanceId": "identify-heavy-scripts", "status": "open" } ], "budget": { "pathCount": 6, "auditPasses": 1 }, "agent": "pi", "runId": "2026-07-19T04-48-49-546Z" }