{ "url": "https://keirin.jp", "auditedAt": "2026-07-20T03:16:42.691Z", "mode": "report", "status": "completed", "statusDetail": "Coverage-complete model audit across desktop and mobile home templates plus schedule, voting, beginner guide, recovery, and 404 archetypes.", "page": { "appType": "mpa", "framework": "Server-rendered Java/JSP-style MPA with jQuery/Bootstrap and separate /pc and /sp templates", "notes": "Root redirects to /pc/top for the evidence CLI; Lighthouse mobile emulation audited /sp/top. Public Japanese official keirin information and wagering entry point." }, "evidenceUsed": [ "screenshot", "dom", "evaluate-probe", "layout-metrics", "trace", "har", "lighthouse", "headers", "cookies", "trackers", "secrets", "images", "discoverability", "heap-summary", "HTTP probes", "Modern Web Guidance 0.0.172" ], "guidanceConsulted": [ "dark-mode", "accessibility", "css-layout", "performance", "html", "security", "privacy", "forms", "optimize-image-priority", "efficient-background-processing", "webmcp", "coordinate-global-events" ], "artifacts": [ { "type": "screenshot", "path": "evidence/home-desktop.png", "caption": "Desktop homepage first viewport", "condition": "desktop", "findingIds": [] }, { "type": "screenshot", "path": "evidence/home-mobile.png", "caption": "PC homepage at a 360x800 viewport", "condition": "viewport 360x800", "findingIds": [ "F05", "F15", "F16" ] }, { "type": "layout", "path": "evidence/home-mobile-layout.json", "caption": "Narrow-viewport layout metrics", "condition": "viewport 360x800", "findingIds": [] }, { "type": "screenshot", "path": "evidence/sp-mobile.png", "caption": "Dedicated mobile homepage", "condition": "viewport 360x800", "findingIds": [] }, { "type": "screenshot", "path": "evidence/home-dark.png", "caption": "Homepage under dark preference", "condition": "prefers-color-scheme: dark", "findingIds": [ "F01" ] }, { "type": "screenshot", "path": "evidence/home-contrast.png", "caption": "Homepage under forced colors", "condition": "forced-colors: active", "findingIds": [] }, { "type": "other", "path": "evidence/preferences.json", "caption": "Preference and animation probe", "condition": "dark + reduced motion", "findingIds": [] }, { "type": "other", "path": "evidence/home-platform-probe.json", "caption": "Scripts, modern CSS, focus, targets, and semantic probe", "condition": "desktop", "findingIds": [ "F02", "F03", "F04", "F06", "F07", "F17", "F18", "F19", "F20", "F22" ] }, { "type": "trace", "path": "evidence/home-trace", "caption": "DevTools performance trace", "condition": "desktop load", "findingIds": [] }, { "type": "trace-summary", "path": "evidence/home-trace-summary.json", "caption": "Compact trace timings", "condition": "desktop load", "findingIds": [] }, { "type": "har", "path": "evidence/home.har", "caption": "Network archive", "condition": "desktop load", "findingIds": [] }, { "type": "har-summary", "path": "evidence/home-summary.json", "caption": "Compact network summary", "condition": "desktop load", "findingIds": [ "F10", "F11", "F27", "F28", "F29" ] }, { "type": "lighthouse", "path": "evidence/lighthouse.json", "caption": "Lighthouse mobile report", "condition": "mobile emulation", "findingIds": [ "F08", "F09", "F12", "F13", "F14" ] }, { "type": "other", "path": "evidence/images.json", "caption": "Image delivery and alt audit", "condition": "desktop", "findingIds": [] }, { "type": "other", "path": "evidence/headers.json", "caption": "Security response headers", "condition": "desktop", "findingIds": [ "F21", "F23" ] }, { "type": "other", "path": "evidence/cookies.json", "caption": "Cookie audit", "condition": "desktop", "findingIds": [] }, { "type": "other", "path": "evidence/trackers.json", "caption": "Third-party tracker audit", "condition": "desktop", "findingIds": [] }, { "type": "other", "path": "evidence/secrets.json", "caption": "Client-side secret scan", "condition": "desktop", "findingIds": [] }, { "type": "discoverability", "path": "evidence/discoverability.json", "caption": "Raw/rendered content comparison", "condition": "JavaScript on/off", "findingIds": [] }, { "type": "screenshot", "path": "evidence/discoverability-rendered.png", "caption": "Rendered browser view", "condition": "JavaScript on", "findingIds": [] }, { "type": "screenshot", "path": "evidence/discoverability-crawler.png", "caption": "Crawler view", "condition": "JavaScript off", "findingIds": [ "F24" ] }, { "type": "heap", "path": "evidence/heap-baseline", "caption": "Baseline heap summary", "condition": "initial load", "findingIds": [] }, { "type": "heap", "path": "evidence/heap-post-scroll", "caption": "Heap after ten scroll cycles", "condition": "repeated interaction", "findingIds": [] }, { "type": "screenshot", "path": "evidence/schedule.png", "caption": "Schedule template", "condition": "desktop", "findingIds": [] }, { "type": "screenshot", "path": "evidence/voting.png", "caption": "Voting-list template", "condition": "desktop", "findingIds": [] }, { "type": "screenshot", "path": "evidence/beginner.png", "caption": "Beginner guide template", "condition": "desktop", "findingIds": [] }, { "type": "screenshot", "path": "evidence/recovery.png", "caption": "Account recovery template", "condition": "desktop", "findingIds": [] }, { "type": "screenshot", "path": "evidence/not-found.png", "caption": "Intentional 404 recovery state", "condition": "desktop", "findingIds": [] }, { "type": "other", "path": "evidence/recovery-probe.json", "caption": "Recovery-form semantic probe", "condition": "desktop", "findingIds": [ "F25", "F26" ] }, { "type": "other", "path": "evidence/http-signals.txt", "caption": "robots, sitemap, and HTTP status evidence", "condition": "HTTP", "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": "Screenshot and computed-style probe under prefers-color-scheme: dark", "evidence": "The dark-condition screenshot remains a light interface; colorScheme is normal, body is rgb(245,244,242), and no prefers-color-scheme rule was found.", "pathIds": [ "home" ], "findingIds": [ "F01" ], "artifacts": [ "evidence/home-dark.png" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-reduced-motion", "status": "pass", "confidence": "medium", "method": "getAnimations and stylesheet probe under prefers-reduced-motion: reduce", "evidence": "The reduce preference matched and no active Web Animations or CSS reduced-motion-relevant animations were present after load.", "pathIds": [ "home" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-contrast", "status": "pass", "confidence": "high", "method": "Forced-colors and prefers-contrast probe plus screenshot", "evidence": "Under forced-colors: active, text and controls resolve to system black/white colors with visible borders; the screenshot remains operable.", "pathIds": [ "home" ] }, { "principleId": "implement-natural-interactions", "checkId": "view-transitions", "status": "issues", "confidence": "high", "method": "Route screenshots and stylesheet/API probe", "evidence": "Navigation between the homepage, schedule, voting list, guide, and recovery pages is an abrupt full-document swap; no view-transition CSS was found.", "pathIds": [ "home" ], "findingIds": [ "F02" ], "artifacts": [ "evidence/home-platform-probe.json" ] }, { "principleId": "implement-natural-interactions", "checkId": "scroll-driven-animations", "status": "not-applicable", "confidence": "high", "method": "Visual recon and CSS probe", "evidence": "The audited templates contain no parallax, scrollytelling, or scroll-linked reveal effect to implement.", "reason": "The audited templates contain no parallax, scrollytelling, or scroll-linked reveal effect to implement." }, { "principleId": "implement-natural-interactions", "checkId": "physical-gestures", "status": "pass", "confidence": "medium", "method": "Visual recon and platform-feature probe", "evidence": "The tested pages use ordinary native scrolling and taps and expose no custom pointer-driven gesture that fights platform behavior.", "pathIds": [ "home" ] }, { "principleId": "provide-guided-navigation", "checkId": "scroll-state-aware-chrome", "status": "issues", "confidence": "medium", "method": "Long-page screenshots and CSS probe", "evidence": "The long homepage and schedule retain static chrome with no scroll-state query, progress cue, or conditional scroll affordance.", "pathIds": [ "home" ], "findingIds": [ "F03" ], "artifacts": [ "evidence/home-platform-probe.json" ] }, { "principleId": "provide-guided-navigation", "checkId": "anchored-positioning", "status": "not-applicable", "confidence": "high", "method": "DOM probe across representative templates", "evidence": "No tooltip, popover, or tethered menu was present on the audited templates.", "reason": "No tooltip, popover, or tethered menu was present on the audited templates." }, { "principleId": "provide-guided-navigation", "checkId": "directs-attention", "status": "pass", "confidence": "high", "method": "Screenshots of home, schedule, voting, recovery and error paths", "evidence": "Breadcrumbs, selected day tabs, section headings, and the 404 top-page action visibly preserve orientation and direct the next step.", "pathIds": [ "home" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "no-intrusive-interruptions", "status": "pass", "confidence": "high", "method": "Load screenshots on five representative paths", "evidence": "No full-screen interstitial, consent wall, or load-time overlay obscured content on any captured path.", "pathIds": [ "home" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "semantic-dismissible-primitives", "status": "not-applicable", "confidence": "high", "method": "DOM primitive and overlay element probe", "evidence": "No transient overlay or disclosure control was present on the audited paths.", "reason": "No transient overlay or disclosure control was present on the audited paths." }, { "principleId": "maximize-content-reduce-noise", "checkId": "reduced-chrome", "status": "issues", "confidence": "high", "method": "Desktop and mobile screenshots", "evidence": "The homepage devotes substantial space to repeated race chrome, sidebars, ticker copy, dense banners, borders, and tiny link lists, crowding the core schedule and voting actions.", "pathIds": [ "home" ], "findingIds": [ "F04" ], "artifacts": [ "evidence/home-platform-probe.json" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "responsive-no-horizontal-scroll", "status": "issues", "confidence": "high", "method": "360x800 screenshot, layout metrics, and mobile-page probe", "evidence": "The desktop route has no viewport meta and renders as a 1263 CSS-pixel page scaled to 0.285; the dedicated mobile route disables zoom with user-scalable=0.", "pathIds": [ "home" ], "findingIds": [ "F05" ], "artifacts": [ "evidence/home-mobile.png" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "component-level-responsiveness", "status": "issues", "confidence": "high", "method": "CSS feature probe and PC/mobile route comparison", "evidence": "No @container/container-type rules were found; separate /pc and /sp templates are shipped instead of reusable components adapting to available space.", "pathIds": [ "home" ], "findingIds": [ "F06" ], "artifacts": [ "evidence/home-platform-probe.json" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "input-modality-aware", "status": "issues", "confidence": "high", "method": "Programmatic focus and target-size probe", "evidence": "The first focused control computes outline-style none, and visible controls as small as 18px high were measured, below robust touch-target sizing.", "pathIds": [ "home" ], "findingIds": [ "F07" ], "artifacts": [ "evidence/home-platform-probe.json" ] }, { "principleId": "support-core-task-success", "checkId": "clear-purpose-and-primary-action", "status": "pass", "confidence": "high", "method": "First-viewport screenshots and text/heading probe", "evidence": "Current races immediately expose LIVE and 投票 actions, while the schedule, voting list, beginner guide, and recovery page each state their purpose.", "pathIds": [ "home" ] }, { "principleId": "support-core-task-success", "checkId": "primary-flow-completion", "status": "pass", "confidence": "medium", "method": "Navigation walkthrough across schedule, voting list, guide, and account recovery", "evidence": "Representative public tasks are reachable with real links, schedule browsing exposes venue detail links, and recovery presents three explicit account-recovery branches.", "pathIds": [ "home" ] }, { "principleId": "support-core-task-success", "checkId": "clear-system-state-and-recovery", "status": "pass", "confidence": "high", "method": "Disabled-race states and intentional 404 path", "evidence": "Unavailable race actions are visibly disabled; a real 404 response shows a clear Japanese explanation and a top-page recovery button.", "pathIds": [ "home" ] }, { "principleId": "be-fast-and-stable", "checkId": "good-core-web-vitals", "status": "issues", "confidence": "high", "method": "Lighthouse and DevTools trace", "evidence": "Lighthouse measured LCP 5.2s and CLS 0.301; the independent trace measured LCP/FCP 3.65s. These miss good CWV thresholds.", "pathIds": [ "home" ], "findingIds": [ "F08" ], "artifacts": [ "evidence/lighthouse.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "visual-stability", "status": "issues", "confidence": "high", "method": "Lighthouse CLS audit and image audit", "evidence": "Lighthouse measured CLS 0.301 and 98 of 100 desktop images lacked explicit dimensions, leaving widespread late-layout risk.", "pathIds": [ "home" ], "findingIds": [ "F09" ], "artifacts": [ "evidence/lighthouse.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-main-thread", "status": "pass", "confidence": "high", "method": "Trace long-task summary and Lighthouse TBT", "evidence": "The trace recorded zero long tasks and 0ms TBT; Lighthouse also measured 0ms total blocking time.", "pathIds": [ "home" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-resource-delivery", "status": "issues", "confidence": "high", "method": "HAR summary confirmed against live script attributes", "evidence": "The load transfers 3.0MB in 133 requests; nine parser-inserted stylesheets and many synchronous non-defer head scripts precede content, and large text resources are uncompressed.", "pathIds": [ "home" ], "findingIds": [ "F10" ], "artifacts": [ "evidence/home-summary.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "trim-unused-and-duplicate-code", "status": "issues", "confidence": "high", "method": "Lighthouse coverage diagnostics and HAR", "evidence": "Lighthouse estimates 189KiB unused JS and 208KiB unused CSS, including 97% unused Bootstrap CSS; the HAR includes jQuery 1.11.3 and jQuery UI.", "pathIds": [ "home" ], "findingIds": [ "F11" ], "artifacts": [ "evidence/home-summary.json" ] }, { "principleId": "be-inclusive", "checkId": "names-roles-labels", "status": "issues", "confidence": "high", "method": "Lighthouse accessibility audit and DOM probe", "evidence": "The page has missing alt attributes (Lighthouse examples and 72 DOM images without alt) and unlabeled search/login/recovery inputs.", "pathIds": [ "home" ], "findingIds": [ "F12" ], "artifacts": [ "evidence/lighthouse.json" ] }, { "principleId": "be-inclusive", "checkId": "sufficient-contrast", "status": "issues", "confidence": "high", "method": "Lighthouse color-contrast audit", "evidence": "Lighthouse found multiple failures, including cyan tab text at 2.83:1 and disabled LIVE text near 1.5:1.", "pathIds": [ "home" ], "findingIds": [ "F13" ], "artifacts": [ "evidence/lighthouse.json" ] }, { "principleId": "be-inclusive", "checkId": "structure-and-focus", "status": "issues", "confidence": "high", "method": "Lighthouse landmarks audit and focus probe", "evidence": "There is no h1 or main landmark, and the programmatically focused first control has no visible outline.", "pathIds": [ "home" ], "findingIds": [ "F14" ], "artifacts": [ "evidence/lighthouse.json" ] }, { "principleId": "be-inclusive", "checkId": "legible-text", "status": "issues", "confidence": "high", "method": "Desktop and 360px screenshots", "evidence": "The desktop layout is highly dense; at 360px it is scaled down wholesale, making body links and status text extremely small and difficult to scan.", "pathIds": [ "home" ], "findingIds": [ "F15" ], "artifacts": [ "evidence/home-mobile.png" ] }, { "principleId": "be-inclusive", "checkId": "zoom-reflow-targets-and-media", "status": "issues", "confidence": "high", "method": "Mobile viewport audit, screenshot, and target probe", "evidence": "The /sp viewport sets maximum-scale=1 and user-scalable=0, while the PC route scales a desktop canvas; several controls are only 18-22px high.", "pathIds": [ "home" ], "findingIds": [ "F16" ], "artifacts": [ "evidence/home-mobile.png" ] }, { "principleId": "follow-best-practices", "checkId": "no-console-errors", "status": "pass", "confidence": "high", "method": "Lighthouse console audit", "evidence": "Lighthouse reported no browser console errors during load.", "pathIds": [ "home" ] }, { "principleId": "follow-best-practices", "checkId": "sound-document-and-assets", "status": "issues", "confidence": "high", "method": "Lighthouse document audits and image primitive", "evidence": "Doctype, charset and aspect ratio pass, but 98/100 images lack dimensions, 91 use legacy formats, and 77 below-fold images are not lazy-loaded.", "pathIds": [ "home" ], "findingIds": [ "F17" ], "artifacts": [ "evidence/home-platform-probe.json" ] }, { "principleId": "follow-best-practices", "checkId": "browser-platform-hygiene", "status": "issues", "confidence": "high", "method": "Lighthouse BFCache diagnostics and script inventory", "evidence": "The mobile page is not BFCache eligible due to an unload handler and no-store responses, and ships legacy jQuery 1.11.3.", "pathIds": [ "home" ], "findingIds": [ "F18" ], "artifacts": [ "evidence/home-platform-probe.json" ] }, { "principleId": "be-discoverable", "checkId": "title-and-description", "status": "pass", "confidence": "high", "method": "DOM and raw-HTML discoverability probe", "evidence": "The title and descriptive meta description are present in both rendered and raw HTML.", "pathIds": [ "home" ] }, { "principleId": "be-discoverable", "checkId": "crawlable-and-mobile-friendly", "status": "pass", "confidence": "high", "method": "Lighthouse SEO, robots.txt, DOM links, and mobile route", "evidence": "Lighthouse reports crawlable anchors and valid robots.txt; representative navigation uses real hrefs and a dedicated mobile route exists.", "pathIds": [ "home" ] }, { "principleId": "be-discoverable", "checkId": "canonical-and-indexing-signals", "status": "issues", "confidence": "high", "method": "HTTP, robots/sitemap, and DOM metadata inspection", "evidence": "Public pages return 200 and allowlisted robots paths, but no canonical was exposed and /sitemap.xml redirects to the homepage instead of serving a sitemap.", "pathIds": [ "home" ], "findingIds": [ "F19" ], "artifacts": [ "evidence/home-platform-probe.json" ] }, { "principleId": "be-discoverable", "checkId": "structured-and-shareable-metadata", "status": "issues", "confidence": "high", "method": "DOM metadata probe", "evidence": "The sports/event homepage exposes zero JSON-LD blocks and zero Open Graph tags, so race/event entities and social previews lack structured metadata.", "pathIds": [ "home" ], "findingIds": [ "F20" ], "artifacts": [ "evidence/home-platform-probe.json" ] }, { "principleId": "be-private-and-secure", "checkId": "secure-transport-and-headers", "status": "issues", "confidence": "high", "method": "Headers, cookies, and protocol primitives", "evidence": "HTTPS and nosniff/X-Frame-Options are present and no cookies were set, but CSP and HSTS are missing.", "pathIds": [ "home" ], "findingIds": [ "F21" ], "artifacts": [ "evidence/headers.json" ] }, { "principleId": "be-private-and-secure", "checkId": "data-minimisation-and-third-parties", "status": "pass", "confidence": "high", "method": "HAR, trackers, cookies, and secrets primitives", "evidence": "All 133 observed requests were first-party; no known trackers, cookies, or exposed secrets were detected.", "pathIds": [ "home" ] }, { "principleId": "be-private-and-secure", "checkId": "in-context-permissions-and-modern-auth", "status": "issues", "confidence": "medium", "method": "Mobile script/auth probe and login form inspection", "evidence": "No load-time permission request was found, but the relevant account login exposes password-only authentication and no WebAuthn/passkey capability was detected.", "pathIds": [ "home" ], "findingIds": [ "F22" ], "artifacts": [ "evidence/home-platform-probe.json" ] }, { "principleId": "be-private-and-secure", "checkId": "defensive-browser-policies", "status": "issues", "confidence": "high", "method": "Security headers primitive", "evidence": "X-Frame-Options and nosniff are present, but HSTS, CSP, Referrer-Policy, and Permissions-Policy are all absent.", "pathIds": [ "home" ], "findingIds": [ "F23" ], "artifacts": [ "evidence/headers.json" ] }, { "principleId": "be-resilient", "checkId": "progressive-enhancement", "status": "issues", "confidence": "high", "method": "Raw-HTML discoverability comparison and crawler screenshot", "evidence": "Only 33% of rendered content words are present in raw HTML; substantial race content is lost without JavaScript even though the page is not an empty shell.", "pathIds": [ "home" ], "findingIds": [ "F24" ], "artifacts": [ "evidence/discoverability-crawler.png" ] }, { "principleId": "be-resilient", "checkId": "resilient-runtime-behaviour", "status": "pass", "confidence": "medium", "method": "Representative route and error-state walkthrough", "evidence": "The MPA routes loaded without runtime errors; no edge-clipped overlay exists and breadcrumb/top-page recovery preserves navigation context.", "pathIds": [ "home" ] }, { "principleId": "be-resilient", "checkId": "offline-and-installable", "status": "not-applicable", "confidence": "high", "method": "Manifest/service-worker recon and site-purpose judgement", "evidence": "Installability/offline transaction support is not expected for a live wagering and current-race service that intrinsically depends on real-time server state.", "reason": "Installability/offline transaction support is not expected for a live wagering and current-race service that intrinsically depends on real-time server state." }, { "principleId": "be-resilient", "checkId": "network-and-http-failure-states", "status": "pass", "confidence": "high", "method": "Direct 404 request plus screenshot", "evidence": "A missing route returns HTTP 404 and presents a readable Japanese error with a prominent top-page recovery action.", "pathIds": [ "home" ] }, { "principleId": "be-internationalised", "checkId": "lang-dir-and-logical-properties", "status": "pass", "confidence": "medium", "method": "DOM language and visual reading-order probe", "evidence": "html lang is correctly ja and the Japanese left-to-right reading order is consistent across representative templates.", "pathIds": [ "home" ] }, { "principleId": "be-internationalised", "checkId": "locale-aware-data", "status": "pass", "confidence": "medium", "method": "Rendered schedule/date inspection", "evidence": "Dates, month/day labels, years, and race times are consistently rendered in conventions appropriate to the declared Japanese locale.", "pathIds": [ "home" ] }, { "principleId": "be-internationalised", "checkId": "time-zone-correctness", "status": "pass", "confidence": "medium", "method": "Event scope and schedule inspection", "evidence": "All audited event times refer to domestic Japanese velodromes in a single national time zone; no cross-zone or DST-sensitive workflow was present.", "pathIds": [ "home" ] }, { "principleId": "be-trustworthy", "checkId": "no-dark-patterns", "status": "pass", "confidence": "high", "method": "Home, voting, guide, recovery, and error screenshots", "evidence": "No consent nag, disguised advertisement, confirmshaming, forced continuity, or preselected commercial option appeared; age and purchase-limit links are prominent.", "pathIds": [ "home" ] }, { "principleId": "be-trustworthy", "checkId": "humane-error-handling", "status": "issues", "confidence": "high", "method": "Recovery-form DOM probe", "evidence": "Recovery inputs have no programmatic labels or required attributes and expose no semantic validation state, undermining timely, accessible error recovery.", "pathIds": [ "home" ], "findingIds": [ "F25" ], "artifacts": [ "evidence/recovery-probe.json" ] }, { "principleId": "be-trustworthy", "checkId": "trustworthy-input-assistance", "status": "issues", "confidence": "high", "method": "Login and recovery form DOM probes", "evidence": "Login has autocomplete off for the password and recovery fields have empty autocomplete values, preventing appropriate autofill assistance.", "pathIds": [ "home" ], "findingIds": [ "F26" ], "artifacts": [ "evidence/recovery-probe.json" ] }, { "principleId": "be-trustworthy", "checkId": "safe-commercial-and-account-flows", "status": "pass", "confidence": "medium", "method": "Public commercial/account entry-point inspection", "evidence": "The site prominently states the 20+ restriction and purchase-limit setting, and provides visible password recovery and account help before transaction entry.", "pathIds": [ "home" ] }, { "principleId": "be-sustainable", "checkId": "optimised-assets", "status": "issues", "confidence": "high", "method": "Image primitive and HAR", "evidence": "The homepage downloads 96 images/1.44MB; 91 of 100 DOM images use PNG/JPEG/GIF, 77 below-fold images are eager, and responsive sources are largely absent.", "pathIds": [ "home" ], "findingIds": [ "F27" ], "artifacts": [ "evidence/home-summary.json" ] }, { "principleId": "be-sustainable", "checkId": "no-wasteful-work", "status": "issues", "confidence": "high", "method": "HAR and Lighthouse code-coverage diagnostics", "evidence": "The page eagerly fetches 133 resources and ships hundreds of KiB of unused CSS/JS, including multiple old UI libraries, despite zero measured main-thread need.", "pathIds": [ "home" ], "findingIds": [ "F28" ], "artifacts": [ "evidence/home-summary.json" ] }, { "principleId": "be-sustainable", "checkId": "third-party-and-media-budget", "status": "issues", "confidence": "high", "method": "HAR resource budget and tracker probe", "evidence": "Third-party cost is zero, but total first-party transfer is still 3.0MB with 96 images, disproportionate to a schedule-and-links first viewport.", "pathIds": [ "home" ], "findingIds": [ "F29" ], "artifacts": [ "evidence/home-summary.json" ] }, { "principleId": "be-agent-ready", "checkId": "structured-agent-capabilities", "status": "not-applicable", "confidence": "high", "method": "Site-purpose judgement and WebMCP probe", "evidence": "No declared agent-facing intent exists; this public information/wagering site does not currently expose a safe agent transaction surface, so absence is an opportunity rather than a failure.", "reason": "No declared agent-facing intent exists; this public information/wagering site does not currently expose a safe agent transaction surface, so absence is an opportunity rather than a failure." }, { "principleId": "be-agent-ready", "checkId": "on-device-inference", "status": "not-applicable", "confidence": "high", "method": "Site-purpose judgement and built-in-AI probe", "evidence": "No summarisation, translation, or generative workflow requiring on-device inference was identified on the audited paths.", "reason": "No summarisation, translation, or generative workflow requiring on-device inference was identified on the audited paths." }, { "principleId": "be-memory-efficient", "checkId": "no-leak-under-repeated-interaction", "status": "pass", "confidence": "medium", "method": "Baseline and post-interaction heap summaries", "evidence": "After ten bottom/top scroll cycles, the independently loaded post snapshot was 10.60MB/157,411 nodes versus baseline 10.50MB/155,557 nodes; the small bounded delta gives no evidence of runaway growth.", "pathIds": [ "home" ] }, { "principleId": "be-memory-efficient", "checkId": "bounded-footprint", "status": "pass", "confidence": "high", "method": "Heap summary totals", "evidence": "The loaded homepage heap is approximately 10.5MB with 155,557 nodes, proportionate to this dense but finite document.", "pathIds": [ "home" ] }, { "principleId": "be-memory-efficient", "checkId": "no-detached-dom-or-unbounded-listeners", "status": "pass", "confidence": "medium", "method": "Before/after heap constructor summaries", "evidence": "The compact before/after heap summaries show no growing Detached* constructor population or order-of-magnitude node growth after repeated scrolling.", "pathIds": [ "home" ] } ], "principleOutcomes": [ { "principleId": "respect-user-preferences", "expectation": "default", "status": "issues", "findingIds": [ "F01" ] }, { "principleId": "implement-natural-interactions", "expectation": "default", "status": "issues", "findingIds": [ "F02" ] }, { "principleId": "provide-guided-navigation", "expectation": "default", "status": "issues", "findingIds": [ "F03" ] }, { "principleId": "maximize-content-reduce-noise", "expectation": "default", "status": "issues", "findingIds": [ "F04" ] }, { "principleId": "adapt-to-the-form-factor", "expectation": "default", "status": "issues", "findingIds": [ "F05", "F06", "F07" ] }, { "principleId": "support-core-task-success", "expectation": "default", "status": "pass" }, { "principleId": "be-fast-and-stable", "expectation": "default", "status": "issues", "findingIds": [ "F08", "F09", "F10", "F11" ] }, { "principleId": "be-inclusive", "expectation": "default", "status": "issues", "findingIds": [ "F12", "F13", "F14", "F15", "F16" ] }, { "principleId": "follow-best-practices", "expectation": "default", "status": "issues", "findingIds": [ "F17", "F18" ] }, { "principleId": "be-discoverable", "expectation": "default", "status": "issues", "findingIds": [ "F19", "F20" ] }, { "principleId": "be-private-and-secure", "expectation": "default", "status": "issues", "findingIds": [ "F21", "F22", "F23" ] }, { "principleId": "be-resilient", "expectation": "contextual", "status": "issues", "findingIds": [ "F24" ] }, { "principleId": "be-internationalised", "expectation": "contextual", "status": "pass" }, { "principleId": "be-trustworthy", "expectation": "default", "status": "issues", "findingIds": [ "F25", "F26" ] }, { "principleId": "be-sustainable", "expectation": "contextual", "status": "issues", "findingIds": [ "F27", "F28", "F29" ] }, { "principleId": "be-agent-ready", "expectation": "contextual", "status": "not-applicable", "reason": "No declared agent-facing intent exists; this public information/wagering site does not currently expose a safe agent transaction surface, so absence is an opportunity rather than a failure. No summarisation, translation, or generative workflow requiring on-device inference was identified on the audited paths." }, { "principleId": "be-memory-efficient", "expectation": "default", "status": "pass" } ], "paths": [ { "id": "home", "description": "Desktop homepage: primary current-race, live-viewing, voting, login, navigation, and content-density template.", "url": "https://keirin.jp/pc/top", "conditions": [ "desktop", "dark preference", "reduced motion", "forced colors", "360x800 viewport", "no JavaScript", "performance/network/memory" ], "result": "issues" }, { "id": "mobile-home", "description": "Dedicated /sp homepage: mobile form factor, mobile accessibility, and content-equivalence template.", "url": "https://keirin.jp/sp/top", "conditions": [ "360x800", "Lighthouse mobile emulation" ], "result": "issues" }, { "id": "schedule", "description": "Representative data-dense listing/calendar and venue-navigation template.", "url": "https://keirin.jp/pc/raceschedule", "conditions": [ "desktop" ], "result": "issues" }, { "id": "voting", "description": "Primary commercial entry listing showing available race/voting choices.", "url": "https://keirin.jp/pc/votinglist", "conditions": [ "desktop" ], "result": "issues" }, { "id": "beginner", "description": "Representative editorial/help content archetype for prospective members.", "url": "https://keirin.jp/pc/static/beginner/miscellaneous/membership.html", "conditions": [ "desktop" ], "result": "issues" }, { "id": "recovery", "description": "Sensitive account-recovery form archetype and input-assistance flow.", "url": "https://keirin.jp/pc/idpassinquiry", "conditions": [ "desktop", "form semantics" ], "result": "issues" }, { "id": "not-found", "description": "Intentional missing route used to assess HTTP and user recovery behavior.", "url": "https://keirin.jp/pc/definitely-not-found-audit", "conditions": [ "desktop" ], "result": "pass" } ], "findings": [ { "id": "F01", "severity": "medium", "confidence": "high", "summary": "Add preference-driven dark theme", "evidence": "The dark-condition screenshot remains a light interface; colorScheme is normal, body is rgb(245,244,242), and no prefers-color-scheme rule was found.", "principleId": "respect-user-preferences", "principleCheckId": "respects-color-scheme", "guidanceId": "dark-mode", "guidanceCategory": "user-experience", "artifacts": [ "evidence/home-dark.png" ], "suggestedFix": "Add preference-driven dark theme. Follow Modern Web Guidance “dark-mode”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "small", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F02", "severity": "low", "confidence": "high", "summary": "Make route changes preserve spatial continuity", "evidence": "Navigation between the homepage, schedule, voting list, guide, and recovery pages is an abrupt full-document swap; no view-transition CSS was found.", "principleId": "implement-natural-interactions", "principleCheckId": "view-transitions", "guidanceId": "cross-document-transitions", "guidanceCategory": "user-experience", "artifacts": [ "evidence/home-platform-probe.json" ], "suggestedFix": "Make route changes preserve spatial continuity. Follow Modern Web Guidance “cross-document-transitions”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "small", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F03", "severity": "low", "confidence": "medium", "summary": "Add useful scroll-state navigation cues", "evidence": "The long homepage and schedule retain static chrome with no scroll-state query, progress cue, or conditional scroll affordance.", "principleId": "provide-guided-navigation", "principleCheckId": "scroll-state-aware-chrome", "guidanceId": "scroll-position-aware-elements", "guidanceCategory": "user-experience", "artifacts": [ "evidence/home-platform-probe.json" ], "suggestedFix": "Add useful scroll-state navigation cues. Follow Modern Web Guidance “scroll-position-aware-elements”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "small", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F04", "severity": "medium", "confidence": "high", "summary": "Refocus the homepage on current races and primary actions", "evidence": "The homepage devotes substantial space to repeated race chrome, sidebars, ticker copy, dense banners, borders, and tiny link lists, crowding the core schedule and voting actions.", "principleId": "maximize-content-reduce-noise", "principleCheckId": "reduced-chrome", "guidanceId": "css-layout", "guidanceCategory": "css-layout", "artifacts": [ "evidence/home-platform-probe.json" ], "suggestedFix": "Refocus the homepage on current races and primary actions. Follow Modern Web Guidance “css-layout”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "small", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F05", "severity": "high", "confidence": "high", "summary": "Replace scaled desktop rendering and restore zoom", "evidence": "The desktop route has no viewport meta and renders as a 1263 CSS-pixel page scaled to 0.285; the dedicated mobile route disables zoom with user-scalable=0.", "principleId": "adapt-to-the-form-factor", "principleCheckId": "responsive-no-horizontal-scroll", "guidanceId": "css-layout", "guidanceCategory": "css-layout", "artifacts": [ "evidence/home-mobile.png" ], "suggestedFix": "Replace scaled desktop rendering and restore zoom. Follow Modern Web Guidance “css-layout”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "medium", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F06", "severity": "medium", "confidence": "high", "summary": "Consolidate PC/mobile templates around adaptive components", "evidence": "No @container/container-type rules were found; separate /pc and /sp templates are shipped instead of reusable components adapting to available space.", "principleId": "adapt-to-the-form-factor", "principleCheckId": "component-level-responsiveness", "guidanceId": "size-aware-styling", "guidanceCategory": "user-experience", "artifacts": [ "evidence/home-platform-probe.json" ], "suggestedFix": "Consolidate PC/mobile templates around adaptive components. Follow Modern Web Guidance “size-aware-styling”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "small", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F07", "severity": "high", "confidence": "high", "summary": "Restore visible focus and enlarge small targets", "evidence": "The first focused control computes outline-style none, and visible controls as small as 18px high were measured, below robust touch-target sizing.", "principleId": "adapt-to-the-form-factor", "principleCheckId": "input-modality-aware", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "artifacts": [ "evidence/home-platform-probe.json" ], "suggestedFix": "Restore visible focus and enlarge small targets. Follow Modern Web Guidance “accessibility”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "medium", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F08", "severity": "high", "confidence": "high", "summary": "Bring LCP and CLS into good ranges", "evidence": "Lighthouse measured LCP 5.2s and CLS 0.301; the independent trace measured LCP/FCP 3.65s. These miss good CWV thresholds.", "principleId": "be-fast-and-stable", "principleCheckId": "good-core-web-vitals", "guidanceId": "performance", "guidanceCategory": "performance", "artifacts": [ "evidence/lighthouse.json" ], "suggestedFix": "Bring LCP and CLS into good ranges. Follow Modern Web Guidance “performance”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "medium", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F09", "severity": "high", "confidence": "high", "summary": "Reserve image and dynamic-content space", "evidence": "Lighthouse measured CLS 0.301 and 98 of 100 desktop images lacked explicit dimensions, leaving widespread late-layout risk.", "principleId": "be-fast-and-stable", "principleCheckId": "visual-stability", "guidanceId": "performance", "guidanceCategory": "performance", "artifacts": [ "evidence/lighthouse.json" ], "suggestedFix": "Reserve image and dynamic-content space. Follow Modern Web Guidance “performance”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "medium", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F10", "severity": "high", "confidence": "high", "summary": "Shorten the critical chain and compress resources", "evidence": "The load transfers 3.0MB in 133 requests; nine parser-inserted stylesheets and many synchronous non-defer head scripts precede content, and large text resources are uncompressed.", "principleId": "be-fast-and-stable", "principleCheckId": "efficient-resource-delivery", "guidanceId": "performance", "guidanceCategory": "performance", "artifacts": [ "evidence/home-summary.json" ], "suggestedFix": "Shorten the critical chain and compress resources. Follow Modern Web Guidance “performance”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "medium", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F11", "severity": "medium", "confidence": "high", "summary": "Remove unused legacy CSS and JavaScript", "evidence": "Lighthouse estimates 189KiB unused JS and 208KiB unused CSS, including 97% unused Bootstrap CSS; the HAR includes jQuery 1.11.3 and jQuery UI.", "principleId": "be-fast-and-stable", "principleCheckId": "trim-unused-and-duplicate-code", "guidanceId": "performance", "guidanceCategory": "performance", "artifacts": [ "evidence/home-summary.json" ], "suggestedFix": "Remove unused legacy CSS and JavaScript. Follow Modern Web Guidance “performance”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "small", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F12", "severity": "high", "confidence": "high", "summary": "Give controls and images accessible semantics", "evidence": "The page has missing alt attributes (Lighthouse examples and 72 DOM images without alt) and unlabeled search/login/recovery inputs.", "principleId": "be-inclusive", "principleCheckId": "names-roles-labels", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "artifacts": [ "evidence/lighthouse.json" ], "suggestedFix": "Give controls and images accessible semantics. Follow Modern Web Guidance “accessibility”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "medium", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F13", "severity": "high", "confidence": "high", "summary": "Raise text and control contrast", "evidence": "Lighthouse found multiple failures, including cyan tab text at 2.83:1 and disabled LIVE text near 1.5:1.", "principleId": "be-inclusive", "principleCheckId": "sufficient-contrast", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "artifacts": [ "evidence/lighthouse.json" ], "suggestedFix": "Raise text and control contrast. Follow Modern Web Guidance “accessibility”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "medium", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F14", "severity": "high", "confidence": "high", "summary": "Add landmarks, h1, and robust focus styles", "evidence": "There is no h1 or main landmark, and the programmatically focused first control has no visible outline.", "principleId": "be-inclusive", "principleCheckId": "structure-and-focus", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "artifacts": [ "evidence/lighthouse.json" ], "suggestedFix": "Add landmarks, h1, and robust focus styles. Follow Modern Web Guidance “accessibility”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "medium", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F15", "severity": "high", "confidence": "high", "summary": "Reflow and simplify dense content at small widths", "evidence": "The desktop layout is highly dense; at 360px it is scaled down wholesale, making body links and status text extremely small and difficult to scan.", "principleId": "be-inclusive", "principleCheckId": "legible-text", "guidanceId": "improve-text-layout-and-legibility", "guidanceCategory": "user-experience", "artifacts": [ "evidence/home-mobile.png" ], "suggestedFix": "Reflow and simplify dense content at small widths. Follow Modern Web Guidance “improve-text-layout-and-legibility”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "medium", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F16", "severity": "high", "confidence": "high", "summary": "Allow zoom and meet target/reflow requirements", "evidence": "The /sp viewport sets maximum-scale=1 and user-scalable=0, while the PC route scales a desktop canvas; several controls are only 18-22px high.", "principleId": "be-inclusive", "principleCheckId": "zoom-reflow-targets-and-media", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "artifacts": [ "evidence/home-mobile.png" ], "suggestedFix": "Allow zoom and meet target/reflow requirements. Follow Modern Web Guidance “accessibility”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "medium", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F17", "severity": "medium", "confidence": "high", "summary": "Add image dimensions and modern delivery attributes", "evidence": "Doctype, charset and aspect ratio pass, but 98/100 images lack dimensions, 91 use legacy formats, and 77 below-fold images are not lazy-loaded.", "principleId": "follow-best-practices", "principleCheckId": "sound-document-and-assets", "guidanceId": "html", "guidanceCategory": "html", "artifacts": [ "evidence/home-platform-probe.json" ], "suggestedFix": "Add image dimensions and modern delivery attributes. Follow Modern Web Guidance “html”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "small", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F18", "severity": "medium", "confidence": "high", "summary": "Restore BFCache eligibility and retire legacy libraries", "evidence": "The mobile page is not BFCache eligible due to an unload handler and no-store responses, and ships legacy jQuery 1.11.3.", "principleId": "follow-best-practices", "principleCheckId": "browser-platform-hygiene", "guidanceId": "html", "guidanceCategory": "html", "artifacts": [ "evidence/home-platform-probe.json" ], "suggestedFix": "Restore BFCache eligibility and retire legacy libraries. Follow Modern Web Guidance “html”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "small", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F19", "severity": "medium", "confidence": "high", "summary": "Publish canonical URLs and a real sitemap", "evidence": "Public pages return 200 and allowlisted robots paths, but no canonical was exposed and /sitemap.xml redirects to the homepage instead of serving a sitemap.", "principleId": "be-discoverable", "principleCheckId": "canonical-and-indexing-signals", "guidanceId": "html", "guidanceCategory": "html", "artifacts": [ "evidence/home-platform-probe.json" ], "suggestedFix": "Publish canonical URLs and a real sitemap. Follow Modern Web Guidance “html”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "small", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F20", "severity": "low", "confidence": "high", "summary": "Add accurate event/organization and social metadata", "evidence": "The sports/event homepage exposes zero JSON-LD blocks and zero Open Graph tags, so race/event entities and social previews lack structured metadata.", "principleId": "be-discoverable", "principleCheckId": "structured-and-shareable-metadata", "guidanceId": "html", "guidanceCategory": "html", "artifacts": [ "evidence/home-platform-probe.json" ], "suggestedFix": "Add accurate event/organization and social metadata. Follow Modern Web Guidance “html”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "small", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F21", "severity": "high", "confidence": "high", "summary": "Deploy CSP and HSTS", "evidence": "HTTPS and nosniff/X-Frame-Options are present and no cookies were set, but CSP and HSTS are missing.", "principleId": "be-private-and-secure", "principleCheckId": "secure-transport-and-headers", "guidanceId": "security", "guidanceCategory": "security", "artifacts": [ "evidence/headers.json" ], "suggestedFix": "Deploy CSP and HSTS. Follow Modern Web Guidance “security”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "medium", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F22", "severity": "medium", "confidence": "medium", "summary": "Offer passkey authentication", "evidence": "No load-time permission request was found, but the relevant account login exposes password-only authentication and no WebAuthn/passkey capability was detected.", "principleId": "be-private-and-secure", "principleCheckId": "in-context-permissions-and-modern-auth", "guidanceId": "passkeys", "guidanceCategory": "passkeys", "artifacts": [ "evidence/home-platform-probe.json" ], "suggestedFix": "Offer passkey authentication. Follow Modern Web Guidance “passkeys”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "small", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F23", "severity": "high", "confidence": "high", "summary": "Complete defensive response policies", "evidence": "X-Frame-Options and nosniff are present, but HSTS, CSP, Referrer-Policy, and Permissions-Policy are all absent.", "principleId": "be-private-and-secure", "principleCheckId": "defensive-browser-policies", "guidanceId": "security", "guidanceCategory": "security", "artifacts": [ "evidence/headers.json" ], "suggestedFix": "Complete defensive response policies. Follow Modern Web Guidance “security”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "medium", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F24", "severity": "medium", "confidence": "high", "summary": "Render core race information in server HTML", "evidence": "Only 33% of rendered content words are present in raw HTML; substantial race content is lost without JavaScript even though the page is not an empty shell.", "principleId": "be-resilient", "principleCheckId": "progressive-enhancement", "guidanceId": "html", "guidanceCategory": "html", "artifacts": [ "evidence/discoverability-crawler.png" ], "suggestedFix": "Render core race information in server HTML. Follow Modern Web Guidance “html”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "small", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F25", "severity": "high", "confidence": "high", "summary": "Make recovery validation semantic and accessible", "evidence": "Recovery inputs have no programmatic labels or required attributes and expose no semantic validation state, undermining timely, accessible error recovery.", "principleId": "be-trustworthy", "principleCheckId": "humane-error-handling", "guidanceId": "forms", "guidanceCategory": "forms", "artifacts": [ "evidence/recovery-probe.json" ], "suggestedFix": "Make recovery validation semantic and accessible. Follow Modern Web Guidance “forms”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "medium", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F26", "severity": "high", "confidence": "high", "summary": "Use correct autocomplete tokens", "evidence": "Login has autocomplete off for the password and recovery fields have empty autocomplete values, preventing appropriate autofill assistance.", "principleId": "be-trustworthy", "principleCheckId": "trustworthy-input-assistance", "guidanceId": "forms", "guidanceCategory": "forms", "artifacts": [ "evidence/recovery-probe.json" ], "suggestedFix": "Use correct autocomplete tokens. Follow Modern Web Guidance “forms”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "medium", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F27", "severity": "medium", "confidence": "high", "summary": "Modernise and defer image delivery", "evidence": "The homepage downloads 96 images/1.44MB; 91 of 100 DOM images use PNG/JPEG/GIF, 77 below-fold images are eager, and responsive sources are largely absent.", "principleId": "be-sustainable", "principleCheckId": "optimised-assets", "guidanceId": "optimize-image-priority", "guidanceCategory": "performance", "artifacts": [ "evidence/home-summary.json" ], "suggestedFix": "Modernise and defer image delivery. Follow Modern Web Guidance “optimize-image-priority”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "small", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F28", "severity": "medium", "confidence": "high", "summary": "Stop eager delivery of unused work", "evidence": "The page eagerly fetches 133 resources and ships hundreds of KiB of unused CSS/JS, including multiple old UI libraries, despite zero measured main-thread need.", "principleId": "be-sustainable", "principleCheckId": "no-wasteful-work", "guidanceId": "efficient-background-processing", "guidanceCategory": "performance", "artifacts": [ "evidence/home-summary.json" ], "suggestedFix": "Stop eager delivery of unused work. Follow Modern Web Guidance “efficient-background-processing”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "small", "pathId": "home", "url": "https://keirin.jp/" }, { "id": "F29", "severity": "medium", "confidence": "high", "summary": "Set a first-party page-weight budget", "evidence": "Third-party cost is zero, but total first-party transfer is still 3.0MB with 96 images, disproportionate to a schedule-and-links first viewport.", "principleId": "be-sustainable", "principleCheckId": "third-party-and-media-budget", "guidanceId": "performance", "guidanceCategory": "performance", "artifacts": [ "evidence/home-summary.json" ], "suggestedFix": "Set a first-party page-weight budget. Follow Modern Web Guidance “performance”, preserve existing Japanese content and transaction safeguards, and verify under the same captured condition.", "effort": "small", "pathId": "home", "url": "https://keirin.jp/" } ], "taskList": [ { "id": "T01", "title": "Fix mobile reflow, zoom, focus, and target sizing", "priority": 1, "findingIds": [ "F05", "F06", "F07", "F15", "F16" ], "guidanceId": "accessibility", "status": "open" }, { "id": "T02", "title": "Repair accessible names, landmarks, focus, and contrast", "priority": 2, "findingIds": [ "F12", "F13", "F14" ], "guidanceId": "accessibility", "status": "open" }, { "id": "T03", "title": "Reduce the critical path and page weight", "priority": 3, "findingIds": [ "F08", "F09", "F10", "F11", "F27", "F28", "F29" ], "guidanceId": "performance", "status": "open" }, { "id": "T04", "title": "Deploy CSP, HSTS, and complete browser policies", "priority": 4, "findingIds": [ "F21", "F23" ], "guidanceId": "security", "status": "open" }, { "id": "T05", "title": "Modernise image markup and delivery", "priority": 5, "findingIds": [ "F17" ], "guidanceId": "html", "status": "open" }, { "id": "T06", "title": "Render core race content for no-JS clients", "priority": 6, "findingIds": [ "F24" ], "guidanceId": "html", "status": "open" }, { "id": "T07", "title": "Make login and recovery forms humane and autofill-friendly", "priority": 7, "findingIds": [ "F22", "F25", "F26" ], "guidanceId": "forms", "status": "open" }, { "id": "T08", "title": "Simplify the homepage information hierarchy", "priority": 8, "findingIds": [ "F03", "F04" ], "guidanceId": "css-layout", "status": "open" }, { "id": "T09", "title": "Add canonical, sitemap, structured, and social metadata", "priority": 9, "findingIds": [ "F19", "F20" ], "guidanceId": "html", "status": "open" }, { "id": "T10", "title": "Respect dark mode and modernise navigation transitions", "priority": 10, "findingIds": [ "F01", "F02" ], "guidanceId": "dark-mode", "status": "open" }, { "id": "T11", "title": "Restore BFCache eligibility and remove legacy dependencies", "priority": 11, "findingIds": [ "F18" ], "guidanceId": "html", "status": "open" } ], "budget": { "pathCount": 7, "auditPasses": 1 }, "agent": "pi", "runId": "2026-07-20T03-16-42-691Z" }