{ "url": "https://www.ptt.cc", "auditedAt": "2026-07-24T05:18:02.041Z", "mode": "report", "status": "completed", "statusDetail": "Coverage-complete representative audit of seven paths/templates. Not covered: posting/login/account flows (not exposed by public WebBBS), age-gated boards, exhaustive board categories, and external legal/Facebook destinations.", "page": { "appType": "mpa", "framework": "Server-rendered HTML with legacy jQuery on WebBBS pages", "notes": "PTT combines a legacy informational template with a newer dark WebBBS template. Public browsing and search are server-rendered." }, "evidenceUsed": [ "screenshot", "dom", "layout-metrics", "evaluate-probe", "discoverability (raw fetch blocked; browser/crawler pair used)", "trace", "har", "headers", "cookies", "trackers", "secrets", "images", "lighthouse", "heap-summary" ], "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": "dom", "path": "evidence/404-dom.json", "caption": "404 dom json", "findingIds": [ "F007" ] }, { "type": "screenshot", "path": "evidence/404-mobile.png", "caption": "404 mobile png", "condition": "viewport 360x800", "findingIds": [ "F007", "F021" ] }, { "type": "screenshot", "path": "evidence/article-desktop.png", "caption": "article desktop png", "findingIds": [] }, { "type": "dom", "path": "evidence/article-dom.json", "caption": "article dom json", "findingIds": [ "F010", "F015", "F016", "F018", "F022" ] }, { "type": "screenshot", "path": "evidence/article-mobile.png", "caption": "article mobile png", "condition": "viewport 360x800", "findingIds": [ "F011", "F012" ] }, { "type": "other", "path": "evidence/article-probe.txt", "caption": "article probe txt", "findingIds": [ "F018" ] }, { "type": "har-summary", "path": "evidence/article-summary.json", "caption": "article summary json", "findingIds": [ "F008", "F010", "F014", "F020", "F023" ] }, { "type": "trace-summary", "path": "evidence/article-trace-summary.json", "caption": "article trace summary json", "findingIds": [ "F008" ] }, { "type": "trace", "path": "evidence/article-trace.json", "caption": "article trace json", "findingIds": [] }, { "type": "har", "path": "evidence/article.har", "caption": "article har", "findingIds": [] }, { "type": "screenshot", "path": "evidence/bbs-desktop.png", "caption": "bbs desktop png", "findingIds": [] }, { "type": "dom", "path": "evidence/bbs-dom.json", "caption": "bbs dom json", "findingIds": [] }, { "type": "layout", "path": "evidence/bbs-mobile-layout.json", "caption": "bbs mobile layout json", "condition": "viewport 360x800", "findingIds": [] }, { "type": "screenshot", "path": "evidence/bbs-mobile.png", "caption": "bbs mobile png", "condition": "viewport 360x800", "findingIds": [] }, { "type": "other", "path": "evidence/bbs-recon.txt", "caption": "bbs recon txt", "findingIds": [] }, { "type": "screenshot", "path": "evidence/board-contrast.png", "caption": "board contrast png", "condition": "prefers-contrast: more", "findingIds": [] }, { "type": "screenshot", "path": "evidence/board-dark.png", "caption": "board dark png", "condition": "prefers-color-scheme: dark", "findingIds": [ "F001" ] }, { "type": "screenshot", "path": "evidence/board-desktop.png", "caption": "board desktop png", "findingIds": [] }, { "type": "dom", "path": "evidence/board-dom.json", "caption": "board dom json", "findingIds": [ "F003", "F016" ] }, { "type": "layout", "path": "evidence/board-mobile-layout.json", "caption": "board mobile layout json", "condition": "viewport 360x800", "findingIds": [] }, { "type": "screenshot", "path": "evidence/board-mobile.png", "caption": "board mobile png", "condition": "viewport 360x800", "findingIds": [ "F005", "F006" ] }, { "type": "other", "path": "evidence/board-recon.txt", "caption": "board recon txt", "findingIds": [] }, { "type": "screenshot", "path": "evidence/contact-desktop.png", "caption": "contact desktop png", "findingIds": [] }, { "type": "dom", "path": "evidence/contact-dom.json", "caption": "contact dom json", "findingIds": [ "F004" ] }, { "type": "other", "path": "evidence/cookies.json", "caption": "cookies json", "findingIds": [ "F019", "F020" ] }, { "type": "other", "path": "evidence/discovery-css-probe.txt", "caption": "discovery css probe txt", "findingIds": [ "F017" ] }, { "type": "other", "path": "evidence/focus-probe.txt", "caption": "focus probe txt", "findingIds": [ "F006", "F013" ] }, { "type": "other", "path": "evidence/headers.json", "caption": "headers json", "findingIds": [ "F019" ] }, { "type": "heap", "path": "evidence/heap-baseline.json", "caption": "heap baseline json", "findingIds": [] }, { "type": "heap", "path": "evidence/heap-post.json", "caption": "heap post json", "findingIds": [] }, { "type": "screenshot", "path": "evidence/home-dark.png", "caption": "home dark png", "condition": "prefers-color-scheme: dark", "findingIds": [ "F001" ] }, { "type": "screenshot", "path": "evidence/home-desktop.png", "caption": "home desktop png", "findingIds": [] }, { "type": "screenshot", "path": "evidence/home-discoverability-crawler.png", "caption": "home discoverability crawler png", "findingIds": [] }, { "type": "screenshot", "path": "evidence/home-discoverability-rendered.png", "caption": "home discoverability rendered png", "findingIds": [] }, { "type": "discoverability", "path": "evidence/home-discoverability.json", "caption": "home discoverability json", "findingIds": [] }, { "type": "dom", "path": "evidence/home-dom.json", "caption": "home dom json", "findingIds": [ "F016" ] }, { "type": "layout", "path": "evidence/home-mobile-layout.json", "caption": "home mobile layout json", "condition": "viewport 360x800", "findingIds": [ "F004" ] }, { "type": "screenshot", "path": "evidence/home-mobile.png", "caption": "home mobile png", "condition": "viewport 360x800", "findingIds": [ "F004" ] }, { "type": "other", "path": "evidence/home-recon.json", "caption": "home recon json", "findingIds": [] }, { "type": "other", "path": "evidence/images.json", "caption": "images json", "findingIds": [ "F009", "F011", "F023" ] }, { "type": "lighthouse", "path": "evidence/lighthouse-article.json", "caption": "lighthouse article json", "findingIds": [ "F008", "F009", "F010", "F012", "F013", "F014", "F022", "F023" ] }, { "type": "lighthouse", "path": "evidence/lighthouse-summary.json", "caption": "lighthouse summary json", "findingIds": [ "F008" ] }, { "type": "other", "path": "evidence/motion-probe.txt", "caption": "motion probe txt", "findingIds": [ "F002" ] }, { "type": "other", "path": "evidence/platform-probe.txt", "caption": "platform probe txt", "findingIds": [ "F001", "F002", "F003", "F005", "F006", "F011", "F013", "F015", "F021", "F022" ] }, { "type": "other", "path": "evidence/robots.txt", "caption": "robots txt", "findingIds": [ "F017" ] }, { "type": "dom", "path": "evidence/search-dom.json", "caption": "search dom json", "findingIds": [] }, { "type": "screenshot", "path": "evidence/search-mobile.png", "caption": "search mobile png", "condition": "viewport 360x800", "findingIds": [] }, { "type": "other", "path": "evidence/secrets.json", "caption": "secrets json", "findingIds": [] }, { "type": "other", "path": "evidence/sitemap.txt", "caption": "sitemap txt", "findingIds": [ "F017" ] }, { "type": "other", "path": "evidence/trackers.json", "caption": "trackers json", "findingIds": [ "F020" ] } ], "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": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F001.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/home-dark.png", "evidence/board-dark.png", "evidence/platform-probe.txt" ], "findingIds": [ "F001" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-reduced-motion", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM, Lighthouse, network, layout, interaction, or heap evidence as applicable.", "evidence": "Reduced-motion probe found zero active animations, so no non-essential motion continued under reduce.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/platform-probe.txt" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-contrast", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM, Lighthouse, network, layout, interaction, or heap evidence as applicable.", "evidence": "The prefers-contrast screenshot retained visible text, controls, and board rows; Lighthouse found no foreground/background minimum-contrast failure.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/platform-probe.txt" ] }, { "principleId": "implement-natural-interactions", "checkId": "view-transitions", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F002.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/platform-probe.txt", "evidence/motion-probe.txt" ], "findingIds": [ "F002" ] }, { "principleId": "implement-natural-interactions", "checkId": "scroll-driven-animations", "status": "not-applicable", "confidence": "medium", "method": "Recon-based applicability judgement after inspecting representative public routes.", "evidence": "No scroll-linked animation is present, so there is no scroll event implementation to assess.", "reason": "No scroll-linked animation is present, so there is no scroll event implementation to assess." }, { "principleId": "implement-natural-interactions", "checkId": "physical-gestures", "status": "not-applicable", "confidence": "medium", "method": "Recon-based applicability judgement after inspecting representative public routes.", "evidence": "No gesture-driven interaction is offered on the audited read/search surfaces.", "reason": "No gesture-driven interaction is offered on the audited read/search surfaces." }, { "principleId": "provide-guided-navigation", "checkId": "scroll-state-aware-chrome", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM, Lighthouse, network, layout, interaction, or heap evidence as applicable.", "evidence": "The board action bar remains available above the listing and clearly exposes paging/navigation state without obscuring content.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/platform-probe.txt" ] }, { "principleId": "provide-guided-navigation", "checkId": "anchored-positioning", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F003.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/board-dom.json", "evidence/platform-probe.txt" ], "findingIds": [ "F003" ] }, { "principleId": "provide-guided-navigation", "checkId": "directs-attention", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM, Lighthouse, network, layout, interaction, or heap evidence as applicable.", "evidence": "Breadcrumbs, selected board state, paging labels, and the article “return to board” affordance provide continuity.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/platform-probe.txt" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "no-intrusive-interruptions", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM, Lighthouse, network, layout, interaction, or heap evidence as applicable.", "evidence": "All load screenshots show content immediately with no pop-up, interstitial, or obscuring banner.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/platform-probe.txt" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "semantic-dismissible-primitives", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F003.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/board-dom.json", "evidence/platform-probe.txt" ], "findingIds": [ "F003" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "reduced-chrome", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM, Lighthouse, network, layout, interaction, or heap evidence as applicable.", "evidence": "Board and article screenshots devote nearly all space to listings/content with compact chrome.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/platform-probe.txt" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "responsive-no-horizontal-scroll", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F004.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/home-mobile.png", "evidence/home-mobile-layout.json", "evidence/contact-dom.json" ], "findingIds": [ "F004" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "component-level-responsiveness", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F005.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/platform-probe.txt", "evidence/board-mobile.png" ], "findingIds": [ "F005" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "input-modality-aware", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F006.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/platform-probe.txt", "evidence/focus-probe.txt", "evidence/board-mobile.png" ], "findingIds": [ "F006" ] }, { "principleId": "support-core-task-success", "checkId": "clear-purpose-and-primary-action", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM, Lighthouse, network, layout, interaction, or heap evidence as applicable.", "evidence": "Homepage, hot-board directory, board title, article title, and search field make the current purpose and next route clear.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/platform-probe.txt" ] }, { "principleId": "support-core-task-success", "checkId": "primary-flow-completion", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM, Lighthouse, network, layout, interaction, or heap evidence as applicable.", "evidence": "The exercised home → WebBBS → Stock → article and Stock → search results journeys completed with real links and content.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/platform-probe.txt" ] }, { "principleId": "support-core-task-success", "checkId": "clear-system-state-and-recovery", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F007.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/404-mobile.png", "evidence/404-dom.json" ], "findingIds": [ "F007" ] }, { "principleId": "be-fast-and-stable", "checkId": "good-core-web-vitals", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F008.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/lighthouse-article.json", "evidence/lighthouse-summary.json", "evidence/article-trace-summary.json", "evidence/article-summary.json" ], "findingIds": [ "F008" ] }, { "principleId": "be-fast-and-stable", "checkId": "visual-stability", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM, Lighthouse, network, layout, interaction, or heap evidence as applicable.", "evidence": "Observed mobile layouts reported CLS 0 and Lighthouse measured CLS 0.052, within the good range, despite unsized-image risk.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/article-trace-summary.json", "evidence/lighthouse-summary.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-main-thread", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM, Lighthouse, network, layout, interaction, or heap evidence as applicable.", "evidence": "Trace recorded zero long tasks and 0ms total blocking time; Lighthouse TBT was 10ms.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/article-trace-summary.json", "evidence/lighthouse-summary.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-resource-delivery", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F008, F009.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/lighthouse-article.json", "evidence/lighthouse-summary.json", "evidence/article-trace-summary.json", "evidence/article-summary.json", "evidence/images.json" ], "findingIds": [ "F008", "F009" ] }, { "principleId": "be-fast-and-stable", "checkId": "trim-unused-and-duplicate-code", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F010.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/article-summary.json", "evidence/lighthouse-article.json", "evidence/article-dom.json" ], "findingIds": [ "F010" ] }, { "principleId": "be-inclusive", "checkId": "names-roles-labels", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F011.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/images.json", "evidence/platform-probe.txt", "evidence/article-mobile.png" ], "findingIds": [ "F011" ] }, { "principleId": "be-inclusive", "checkId": "sufficient-contrast", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F012.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/lighthouse-article.json", "evidence/article-mobile.png" ], "findingIds": [ "F012" ] }, { "principleId": "be-inclusive", "checkId": "structure-and-focus", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F013.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/lighthouse-article.json", "evidence/platform-probe.txt", "evidence/focus-probe.txt" ], "findingIds": [ "F013" ] }, { "principleId": "be-inclusive", "checkId": "legible-text", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F004.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/home-mobile.png", "evidence/home-mobile-layout.json", "evidence/contact-dom.json" ], "findingIds": [ "F004" ] }, { "principleId": "be-inclusive", "checkId": "zoom-reflow-targets-and-media", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F004, F006.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/home-mobile.png", "evidence/home-mobile-layout.json", "evidence/contact-dom.json", "evidence/platform-probe.txt", "evidence/focus-probe.txt", "evidence/board-mobile.png" ], "findingIds": [ "F004", "F006" ] }, { "principleId": "follow-best-practices", "checkId": "no-console-errors", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F014.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/lighthouse-article.json", "evidence/article-summary.json" ], "findingIds": [ "F014" ] }, { "principleId": "follow-best-practices", "checkId": "sound-document-and-assets", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F009.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/images.json", "evidence/lighthouse-article.json" ], "findingIds": [ "F009" ] }, { "principleId": "follow-best-practices", "checkId": "browser-platform-hygiene", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F015.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/article-dom.json", "evidence/platform-probe.txt" ], "findingIds": [ "F015" ] }, { "principleId": "be-discoverable", "checkId": "title-and-description", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F016.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/home-dom.json", "evidence/board-dom.json", "evidence/article-dom.json" ], "findingIds": [ "F016" ] }, { "principleId": "be-discoverable", "checkId": "crawlable-and-mobile-friendly", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F004, F017.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/home-mobile.png", "evidence/home-mobile-layout.json", "evidence/contact-dom.json", "evidence/robots.txt", "evidence/sitemap.txt", "evidence/discovery-css-probe.txt" ], "findingIds": [ "F004", "F017" ] }, { "principleId": "be-discoverable", "checkId": "canonical-and-indexing-signals", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F017.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/robots.txt", "evidence/sitemap.txt", "evidence/discovery-css-probe.txt" ], "findingIds": [ "F017" ] }, { "principleId": "be-discoverable", "checkId": "structured-and-shareable-metadata", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F018.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/article-dom.json", "evidence/article-probe.txt" ], "findingIds": [ "F018" ] }, { "principleId": "be-private-and-secure", "checkId": "secure-transport-and-headers", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F019.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/headers.json", "evidence/cookies.json" ], "findingIds": [ "F019" ] }, { "principleId": "be-private-and-secure", "checkId": "data-minimisation-and-third-parties", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F020.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/trackers.json", "evidence/article-summary.json", "evidence/cookies.json" ], "findingIds": [ "F020" ] }, { "principleId": "be-private-and-secure", "checkId": "in-context-permissions-and-modern-auth", "status": "pass", "confidence": "medium", "method": "Direct screenshot, DOM, Lighthouse, network, layout, interaction, or heap evidence as applicable.", "evidence": "DOM, screenshots, and active probes across representative routes directly support this outcome.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/platform-probe.txt" ] }, { "principleId": "be-private-and-secure", "checkId": "defensive-browser-policies", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F019.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/headers.json", "evidence/cookies.json" ], "findingIds": [ "F019" ] }, { "principleId": "be-resilient", "checkId": "progressive-enhancement", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM, Lighthouse, network, layout, interaction, or heap evidence as applicable.", "evidence": "DOM evidence is server-rendered and the crawler screenshot with JavaScript disabled retained the homepage content; no empty app shell exists.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/home-discoverability-crawler.png", "evidence/home-dom.json" ] }, { "principleId": "be-resilient", "checkId": "resilient-runtime-behaviour", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F003.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/board-dom.json", "evidence/platform-probe.txt" ], "findingIds": [ "F003" ] }, { "principleId": "be-resilient", "checkId": "offline-and-installable", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F021.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/platform-probe.txt", "evidence/404-mobile.png" ], "findingIds": [ "F021" ] }, { "principleId": "be-resilient", "checkId": "network-and-http-failure-states", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F007.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/404-mobile.png", "evidence/404-dom.json" ], "findingIds": [ "F007" ] }, { "principleId": "be-internationalised", "checkId": "lang-dir-and-logical-properties", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F022.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/platform-probe.txt", "evidence/article-dom.json", "evidence/lighthouse-article.json" ], "findingIds": [ "F022" ] }, { "principleId": "be-internationalised", "checkId": "locale-aware-data", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F022.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/platform-probe.txt", "evidence/article-dom.json", "evidence/lighthouse-article.json" ], "findingIds": [ "F022" ] }, { "principleId": "be-internationalised", "checkId": "time-zone-correctness", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F022.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/platform-probe.txt", "evidence/article-dom.json", "evidence/lighthouse-article.json" ], "findingIds": [ "F022" ] }, { "principleId": "be-trustworthy", "checkId": "no-dark-patterns", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM, Lighthouse, network, layout, interaction, or heap evidence as applicable.", "evidence": "No consent wall, upsell, forced continuity, disguised advertisement, or destructive action appeared in any audited journey.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/platform-probe.txt" ] }, { "principleId": "be-trustworthy", "checkId": "humane-error-handling", "status": "not-applicable", "confidence": "medium", "method": "Recon-based applicability judgement after inspecting representative public routes.", "evidence": "No data-entry form with validation exists in the representative public surfaces; board search has no required/invalid state.", "reason": "No data-entry form with validation exists in the representative public surfaces; board search has no required/invalid state." }, { "principleId": "be-trustworthy", "checkId": "trustworthy-input-assistance", "status": "not-applicable", "confidence": "medium", "method": "Recon-based applicability judgement after inspecting representative public routes.", "evidence": "No address, payment, sign-in, or sign-up fields are present; the only input is a board keyword search.", "reason": "No address, payment, sign-in, or sign-up fields are present; the only input is a board keyword search." }, { "principleId": "be-trustworthy", "checkId": "safe-commercial-and-account-flows", "status": "not-applicable", "confidence": "medium", "method": "Recon-based applicability judgement after inspecting representative public routes.", "evidence": "No checkout, subscription, consent, authentication, or account-management flow is exposed in the audited public WebBBS.", "reason": "No checkout, subscription, consent, authentication, or account-management flow is exposed in the audited public WebBBS." }, { "principleId": "be-sustainable", "checkId": "optimised-assets", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F023.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/images.json", "evidence/lighthouse-article.json", "evidence/article-summary.json" ], "findingIds": [ "F023" ] }, { "principleId": "be-sustainable", "checkId": "no-wasteful-work", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F020.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/trackers.json", "evidence/article-summary.json", "evidence/cookies.json" ], "findingIds": [ "F020" ] }, { "principleId": "be-sustainable", "checkId": "third-party-and-media-budget", "status": "issues", "confidence": "high", "method": "Active visual/DOM/network/performance inspection on the representative path(s).", "evidence": "Direct evidence shows the divergence documented in F020, F023.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/trackers.json", "evidence/article-summary.json", "evidence/cookies.json", "evidence/images.json", "evidence/lighthouse-article.json" ], "findingIds": [ "F020", "F023" ] }, { "principleId": "be-agent-ready", "checkId": "structured-agent-capabilities", "status": "not-applicable", "confidence": "medium", "method": "Recon-based applicability judgement after inspecting representative public routes.", "evidence": "Emerging capability is not applicable to this conventional public read/search surface; no developer intent to expose WebMCP tools was available.", "reason": "Emerging capability is not applicable to this conventional public read/search surface; no developer intent to expose WebMCP tools was available." }, { "principleId": "be-agent-ready", "checkId": "on-device-inference", "status": "not-applicable", "confidence": "medium", "method": "Recon-based applicability judgement after inspecting representative public routes.", "evidence": "No on-device inference use case is required for the core read/search journey.", "reason": "No on-device inference use case is required for the core read/search journey." }, { "principleId": "be-memory-efficient", "checkId": "no-leak-under-repeated-interaction", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM, Lighthouse, network, layout, interaction, or heap evidence as applicable.", "evidence": "After 10 menu toggle cycles, heap self size grew only 37,188 bytes (~0.8%); major constructor counts remained stable.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/heap-baseline.json", "evidence/heap-post.json" ] }, { "principleId": "be-memory-efficient", "checkId": "bounded-footprint", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM, Lighthouse, network, layout, interaction, or heap evidence as applicable.", "evidence": "Board heap was ~4.73MB self size with ~115k snapshot nodes, proportionate for a server-rendered listing.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/heap-baseline.json", "evidence/heap-post.json" ] }, { "principleId": "be-memory-efficient", "checkId": "no-detached-dom-or-unbounded-listeners", "status": "pass", "confidence": "high", "method": "Direct screenshot, DOM, Lighthouse, network, layout, interaction, or heap evidence as applicable.", "evidence": "Before/after summaries showed stable Array count (9042), closures +15, and no Detached* constructor among the largest retained constructors.", "pathIds": [ "home", "bbs-index", "board", "article", "search", "contact", "not-found" ], "artifacts": [ "evidence/heap-baseline.json", "evidence/heap-post.json" ] } ], "principleOutcomes": [ { "principleId": "respect-user-preferences", "expectation": "default", "status": "issues", "findingIds": [ "F001" ] }, { "principleId": "implement-natural-interactions", "expectation": "default", "status": "issues", "findingIds": [ "F002" ] }, { "principleId": "provide-guided-navigation", "expectation": "default", "status": "issues", "findingIds": [ "F003" ] }, { "principleId": "maximize-content-reduce-noise", "expectation": "default", "status": "issues", "findingIds": [ "F003" ] }, { "principleId": "adapt-to-the-form-factor", "expectation": "default", "status": "issues", "findingIds": [ "F004", "F005", "F006" ] }, { "principleId": "support-core-task-success", "expectation": "default", "status": "issues", "findingIds": [ "F007" ] }, { "principleId": "be-fast-and-stable", "expectation": "default", "status": "issues", "findingIds": [ "F008", "F009", "F010" ] }, { "principleId": "be-inclusive", "expectation": "default", "status": "issues", "findingIds": [ "F011", "F012", "F013", "F004", "F006" ] }, { "principleId": "follow-best-practices", "expectation": "default", "status": "issues", "findingIds": [ "F014", "F009", "F015" ] }, { "principleId": "be-discoverable", "expectation": "default", "status": "issues", "findingIds": [ "F016", "F004", "F017", "F018" ] }, { "principleId": "be-private-and-secure", "expectation": "default", "status": "issues", "findingIds": [ "F019", "F020" ] }, { "principleId": "be-resilient", "expectation": "contextual", "status": "issues", "findingIds": [ "F003", "F021", "F007" ] }, { "principleId": "be-internationalised", "expectation": "contextual", "status": "issues", "findingIds": [ "F022" ] }, { "principleId": "be-trustworthy", "expectation": "default", "status": "pass", "findingIds": [] }, { "principleId": "be-sustainable", "expectation": "contextual", "status": "issues", "findingIds": [ "F023", "F020" ] }, { "principleId": "be-agent-ready", "expectation": "contextual", "status": "not-applicable", "findingIds": [], "reason": "All checks were judged not applicable to the audited conventional public read/search surface." }, { "principleId": "be-memory-efficient", "expectation": "default", "status": "pass", "findingIds": [] } ], "paths": [ { "id": "home", "description": "Public service homepage and legacy informational template; tested desktop, 360px mobile, dark preference, and no-JS crawler view.", "url": "https://www.ptt.cc/", "conditions": [ "desktop 1440x1000", "viewport 360x800", "prefers-color-scheme: dark", "JavaScript disabled" ], "result": "issues" }, { "id": "bbs-index", "description": "WebBBS hot-board directory, representing the primary content-discovery entry point.", "url": "https://www.ptt.cc/bbs/index.html", "conditions": [ "desktop 1440x1000", "viewport 360x800" ], "result": "issues" }, { "id": "board", "description": "Stock board listing, representing board navigation, pagination, search, menus, and repeated interaction.", "url": "https://www.ptt.cc/bbs/Stock/index.html", "conditions": [ "desktop 1440x1000", "viewport 360x800", "prefers-color-scheme: dark", "prefers-contrast: more", "prefers-reduced-motion: reduce", "keyboard focus", "10 repeated menu toggles" ], "result": "issues" }, { "id": "article", "description": "Representative article/detail page with comments and user images.", "url": "https://www.ptt.cc/bbs/Stock/M.1784860040.A.486.html", "conditions": [ "desktop 1440x1000", "viewport 360x800", "Lighthouse mobile", "trace", "HAR" ], "result": "issues" }, { "id": "search", "description": "Primary search journey from a board to populated results.", "url": "https://www.ptt.cc/bbs/Stock/search?q=google", "conditions": [ "viewport 360x800" ], "result": "pass" }, { "id": "contact", "description": "Contact/help informational template and route off the global navigation.", "url": "https://www.ptt.cc/contact.html", "conditions": [ "desktop 1440x1000" ], "result": "issues" }, { "id": "not-found", "description": "Recovery behavior for an invalid URL.", "url": "https://www.ptt.cc/this-route-does-not-exist-web-uplift", "conditions": [ "viewport 360x800" ], "result": "issues" } ], "findings": [ { "id": "F001", "severity": "medium", "confidence": "high", "summary": "Theme is fixed rather than preference-aware", "evidence": "Dark-emulation screenshots show the legacy homepage remains light while the BBS remains hard-coded dark; the DOM probe reports colorScheme \"normal\" and no preference-driven theme CSS.", "artifacts": [ "evidence/home-dark.png", "evidence/board-dark.png", "evidence/platform-probe.txt" ], "suggestedFix": "Declare color-scheme and use prefers-color-scheme/light-dark() tokens across both templates.", "principleId": "respect-user-preferences", "principleCheckId": "respects-color-scheme", "guidanceId": "dark-mode", "guidanceCategory": "user-experience", "pathId": "home", "url": "https://www.ptt.cc/", "effort": "medium" }, { "id": "F002", "severity": "low", "confidence": "high", "summary": "Navigation and state changes swap abruptly", "evidence": "CSS/DOM probes found no view-transition rules; board navigation and menu state changes use immediate legacy behavior.", "artifacts": [ "evidence/platform-probe.txt", "evidence/motion-probe.txt" ], "suggestedFix": "Add progressive same-document and cross-document View Transitions, with reduced-motion handling.", "principleId": "implement-natural-interactions", "principleCheckId": "view-transitions", "guidanceId": "same-document-transitions", "guidanceCategory": "user-experience", "pathId": "board", "url": "https://www.ptt.cc/bbs/Stock/index.html", "effort": "medium" }, { "id": "F003", "severity": "medium", "confidence": "high", "summary": "Article menus are ad-hoc div overlays", "evidence": "Board DOM uses .trigger and .dropdown divs rather than buttons/popover, and contains no anchor positioning, dialog, popover, or details primitives.", "artifacts": [ "evidence/board-dom.json", "evidence/platform-probe.txt" ], "suggestedFix": "Use a named button with popover and CSS anchor positioning/position-try fallbacks.", "principleId": "provide-guided-navigation", "principleCheckId": "anchored-positioning", "guidanceId": "position-aware-tooltips", "guidanceCategory": "user-experience", "pathId": "board", "url": "https://www.ptt.cc/bbs/Stock/index.html", "effort": "medium" }, { "id": "F004", "severity": "high", "confidence": "high", "summary": "Legacy pages render as a scaled desktop canvas on phones", "evidence": "At a requested 360px viewport the homepage layout reports a 980px layout viewport because it lacks a viewport meta tag; the screenshot shows tiny, unreadable text and controls. Contact uses the same template.", "artifacts": [ "evidence/home-mobile.png", "evidence/home-mobile-layout.json", "evidence/contact-dom.json" ], "suggestedFix": "Add a standards viewport meta tag and rebuild the legacy template with fluid/intrinsic layout and readable mobile typography.", "principleId": "adapt-to-the-form-factor", "principleCheckId": "responsive-no-horizontal-scroll", "guidanceId": "fluid-scaling", "guidanceCategory": "user-experience", "pathId": "home", "url": "https://www.ptt.cc/", "effort": "medium" }, { "id": "F005", "severity": "low", "confidence": "high", "summary": "Reusable listing UI has no component-level adaptation", "evidence": "The platform probe found no @container rules; adaptation is limited to global layout behavior.", "artifacts": [ "evidence/platform-probe.txt", "evidence/board-mobile.png" ], "suggestedFix": "Introduce container queries where board/listing components are reused at different widths.", "principleId": "adapt-to-the-form-factor", "principleCheckId": "component-level-responsiveness", "guidanceId": "size-aware-styling", "guidanceCategory": "user-experience", "pathId": "board", "url": "https://www.ptt.cc/bbs/Stock/index.html", "effort": "medium" }, { "id": "F006", "severity": "high", "confidence": "high", "summary": "Search and article-list controls are not robustly input-modality aware", "evidence": "The search input has no accessible label and no visible focused outline; many article links measure only 17px high, well below comfortable touch target guidance.", "artifacts": [ "evidence/platform-probe.txt", "evidence/focus-probe.txt", "evidence/board-mobile.png" ], "suggestedFix": "Add a real label, strong :focus-visible styles, and enlarge clickable rows/targets to at least 24px, preferably 44px.", "principleId": "adapt-to-the-form-factor", "principleCheckId": "input-modality-aware", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "pathId": "board", "url": "https://www.ptt.cc/bbs/Stock/index.html", "effort": "small" }, { "id": "F007", "severity": "medium", "confidence": "high", "summary": "Error routes provide no recovery", "evidence": "The tested invalid URL returns a bare nginx 404 with no explanation, search, retry, or link back to PTT.", "artifacts": [ "evidence/404-mobile.png", "evidence/404-dom.json" ], "suggestedFix": "Serve a branded 404 with useful context, search, and routes back to boards/home.", "principleId": "support-core-task-success", "principleCheckId": "clear-system-state-and-recovery", "guidanceId": "persistent-toast-notifications", "guidanceCategory": "user-experience", "pathId": "not-found", "url": "https://www.ptt.cc/this-route-does-not-exist-web-uplift", "effort": "small" }, { "id": "F008", "severity": "high", "confidence": "high", "summary": "Render-blocking dependencies delay content", "evidence": "Lighthouse mobile measured LCP 4.3s/FCP 3.4s and estimated 1.91s savings from render-blocking CSS, font CSS, jQuery 2.1.1, and bbs.js; trace corroborated ~2.07s LCP with zero long tasks.", "artifacts": [ "evidence/lighthouse-article.json", "evidence/lighthouse-summary.json", "evidence/article-trace-summary.json", "evidence/article-summary.json" ], "suggestedFix": "Inline minimal critical CSS, defer noncritical styles/scripts, self-host or optimize fonts, and remove jQuery from the initial critical path.", "principleId": "be-fast-and-stable", "principleCheckId": "good-core-web-vitals", "guidanceId": "performance", "guidanceCategory": "performance", "pathId": "article", "url": "https://www.ptt.cc/bbs/Stock/M.1784860040.A.486.html", "effort": "medium" }, { "id": "F009", "severity": "medium", "confidence": "high", "summary": "User images lack dimensions", "evidence": "The image primitive found all 3 article images without width/height; Lighthouse reported CLS 0.052 and failed the unsized-images audit.", "artifacts": [ "evidence/images.json", "evidence/lighthouse-article.json" ], "suggestedFix": "Reserve image space with width/height or aspect-ratio before lazy images load.", "principleId": "be-fast-and-stable", "principleCheckId": "efficient-resource-delivery", "guidanceId": "optimize-image-priority", "guidanceCategory": "performance", "pathId": "article", "url": "https://www.ptt.cc/bbs/Stock/M.1784860040.A.486.html", "effort": "small" }, { "id": "F010", "severity": "medium", "confidence": "high", "summary": "Analytics code dominates shipped JavaScript", "evidence": "HAR shows 241KB of script and Lighthouse estimates 74KiB unused JavaScript, largely gtag; the page also loads both GA4 and legacy Universal Analytics initializers.", "artifacts": [ "evidence/article-summary.json", "evidence/lighthouse-article.json", "evidence/article-dom.json" ], "suggestedFix": "Remove duplicate/legacy analytics, conditionally load analytics after consent or idle, and avoid shipping unused tag-manager code.", "principleId": "be-fast-and-stable", "principleCheckId": "trim-unused-and-duplicate-code", "guidanceId": "identify-heavy-scripts", "guidanceCategory": "performance", "pathId": "article", "url": "https://www.ptt.cc/bbs/Stock/M.1784860040.A.486.html", "effort": "small" }, { "id": "F011", "severity": "high", "confidence": "high", "summary": "Content images and search lack accessible names", "evidence": "The image audit found all 3 article images with empty/missing alt; the board search input has placeholder text but no label or aria-label.", "artifacts": [ "evidence/images.json", "evidence/platform-probe.txt", "evidence/article-mobile.png" ], "suggestedFix": "Generate meaningful alt text where images convey content and add a persistent programmatic label to search.", "principleId": "be-inclusive", "principleCheckId": "names-roles-labels", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "pathId": "article", "url": "https://www.ptt.cc/bbs/Stock/M.1784860040.A.486.html", "effort": "medium" }, { "id": "F012", "severity": "high", "confidence": "high", "summary": "Inline links rely on color alone", "evidence": "Lighthouse accessibility found article links with only 1.21:1 contrast against surrounding text and no underline/non-color distinction.", "artifacts": [ "evidence/lighthouse-article.json", "evidence/article-mobile.png" ], "suggestedFix": "Underline inline links or add another persistent cue and meet the 3:1 adjacent-text distinction.", "principleId": "be-inclusive", "principleCheckId": "sufficient-contrast", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "pathId": "article", "url": "https://www.ptt.cc/bbs/Stock/M.1784860040.A.486.html", "effort": "small" }, { "id": "F013", "severity": "high", "confidence": "high", "summary": "Pages lack semantic structure and consistent focus indication", "evidence": "Lighthouse reports no main landmark and no html lang; the board probe found no headings/landmarks, while the focused search input has outline none.", "artifacts": [ "evidence/lighthouse-article.json", "evidence/platform-probe.txt", "evidence/focus-probe.txt" ], "suggestedFix": "Add main/nav/header landmarks and logical headings, set lang, and provide visible :focus-visible styling.", "principleId": "be-inclusive", "principleCheckId": "structure-and-focus", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "pathId": "board", "url": "https://www.ptt.cc/bbs/Stock/index.html", "effort": "medium" }, { "id": "F014", "severity": "low", "confidence": "high", "summary": "A missing favicon logs a console error", "evidence": "Lighthouse recorded a 404 console/network error for https://www.ptt.cc/favicon.ico.", "artifacts": [ "evidence/lighthouse-article.json", "evidence/article-summary.json" ], "suggestedFix": "Serve a valid favicon or reference an existing icon.", "principleId": "follow-best-practices", "principleCheckId": "no-console-errors", "guidanceId": "html", "guidanceCategory": "html", "pathId": "article", "url": "https://www.ptt.cc/bbs/Stock/M.1784860040.A.486.html", "effort": "trivial" }, { "id": "F015", "severity": "medium", "confidence": "high", "summary": "The runtime ships an obsolete jQuery build", "evidence": "Rendered DOM loads jQuery 2.1.1 synchronously; this legacy dependency is over a decade old and is not needed for the mostly server-rendered page.", "artifacts": [ "evidence/article-dom.json", "evidence/platform-probe.txt" ], "suggestedFix": "Replace the small interactions with modern DOM APIs or upgrade after compatibility/security review.", "principleId": "follow-best-practices", "principleCheckId": "browser-platform-hygiene", "guidanceId": "html", "guidanceCategory": "html", "pathId": "article", "url": "https://www.ptt.cc/bbs/Stock/M.1784860040.A.486.html", "effort": "medium" }, { "id": "F016", "severity": "medium", "confidence": "high", "summary": "Key public templates omit meta descriptions", "evidence": "Homepage and board-listing DOM provide titles but no meta description; only the article template includes one.", "artifacts": [ "evidence/home-dom.json", "evidence/board-dom.json", "evidence/article-dom.json" ], "suggestedFix": "Add unique, useful descriptions to homepage, directory, board, search, and contact templates.", "principleId": "be-discoverable", "principleCheckId": "title-and-description", "guidanceId": "html", "guidanceCategory": "html", "pathId": "home", "url": "https://www.ptt.cc/", "effort": "small" }, { "id": "F017", "severity": "medium", "confidence": "high", "summary": "Indexing signals are incomplete", "evidence": "robots.txt and sitemap.xml both returned 404; board/home templates omit canonical links, and the homepage also omits viewport metadata.", "artifacts": [ "evidence/robots.txt", "evidence/sitemap.txt", "evidence/discovery-css-probe.txt" ], "suggestedFix": "Publish robots.txt and sitemap.xml, add canonical URLs per public template, and keep indexing policy consistent.", "principleId": "be-discoverable", "principleCheckId": "canonical-and-indexing-signals", "guidanceId": "html", "guidanceCategory": "html", "pathId": "home", "url": "https://www.ptt.cc/", "effort": "small" }, { "id": "F018", "severity": "low", "confidence": "high", "summary": "Article metadata lacks structured data", "evidence": "The article includes title, description, canonical and Open Graph metadata but no JSON-LD describing article/discussion content.", "artifacts": [ "evidence/article-dom.json", "evidence/article-probe.txt" ], "suggestedFix": "Add accurate schema.org DiscussionForumPosting or Article JSON-LD matching visible content.", "principleId": "be-discoverable", "principleCheckId": "structured-and-shareable-metadata", "guidanceId": "html", "guidanceCategory": "html", "pathId": "article", "url": "https://www.ptt.cc/bbs/Stock/M.1784860040.A.486.html", "effort": "small" }, { "id": "F019", "severity": "high", "confidence": "high", "summary": "Browser security headers and cookie flags are absent", "evidence": "Header audit found no CSP, HSTS, nosniff, frame protection, Referrer-Policy, or Permissions-Policy. All 4 analytics cookies lack Secure and use SameSite=None; two last 400 days.", "artifacts": [ "evidence/headers.json", "evidence/cookies.json" ], "suggestedFix": "Deploy a restrictive CSP, HSTS, nosniff, frame-ancestors, Referrer-Policy and Permissions-Policy; mark cookies Secure and use the narrowest SameSite/lifetime.", "principleId": "be-private-and-secure", "principleCheckId": "secure-transport-and-headers", "guidanceId": "security", "guidanceCategory": "security", "pathId": "article", "url": "https://www.ptt.cc/bbs/Stock/M.1784860040.A.486.html", "effort": "medium" }, { "id": "F020", "severity": "high", "confidence": "high", "summary": "Tracking begins immediately with a broad third-party footprint", "evidence": "Tracker audit observed 10 third-party origins and Google Analytics, Tag Manager and DoubleClick; HAR attributes 461,729 of 467,877 transferred bytes to non-www.ptt.cc origins.", "artifacts": [ "evidence/trackers.json", "evidence/article-summary.json", "evidence/cookies.json" ], "suggestedFix": "Minimize analytics, avoid advertising audience calls where unnecessary, load only after an appropriate consent/context decision, and proxy/self-host essential assets.", "principleId": "be-private-and-secure", "principleCheckId": "data-minimisation-and-third-parties", "guidanceId": "privacy", "guidanceCategory": "privacy", "pathId": "article", "url": "https://www.ptt.cc/bbs/Stock/M.1784860040.A.486.html", "effort": "medium" }, { "id": "F021", "severity": "medium", "confidence": "high", "summary": "The WebBBS has no install or offline fallback", "evidence": "DOM/platform probes found no web app manifest; an invalid/network-like route falls through to a bare server error and no offline experience was exposed.", "artifacts": [ "evidence/platform-probe.txt", "evidence/404-mobile.png" ], "suggestedFix": "For this app-like board reader, add a manifest and service worker with a small offline/retry fallback for previously visited content.", "principleId": "be-resilient", "principleCheckId": "offline-and-installable", "guidanceId": "detect-initial-visibility-state", "guidanceCategory": "performance", "pathId": "bbs-index", "url": "https://www.ptt.cc/bbs/index.html", "effort": "medium" }, { "id": "F022", "severity": "high", "confidence": "high", "summary": "Language and time output are not internationalisation-ready", "evidence": "Across audited pages html.lang and dir are empty; article timestamps are fixed English strings such as \"Fri Jul 24 10:27:18 2026\" on Chinese content, with no locale/time-zone context.", "artifacts": [ "evidence/platform-probe.txt", "evidence/article-dom.json", "evidence/lighthouse-article.json" ], "suggestedFix": "Set lang=\"zh-Hant-TW\" (and dir as appropriate), use logical properties, and render dates via Intl with an explicit time zone and machine-readable datetime.", "principleId": "be-internationalised", "principleCheckId": "lang-dir-and-logical-properties", "guidanceId": "translator", "guidanceCategory": "built-in-ai", "pathId": "article", "url": "https://www.ptt.cc/bbs/Stock/M.1784860040.A.486.html", "effort": "medium" }, { "id": "F023", "severity": "medium", "confidence": "high", "summary": "Article images are not delivered responsively", "evidence": "All 3 images are JPEG with no dimensions; 2 lack srcset. Lighthouse estimates 113KiB image savings and identifies 1080/1280px sources displayed substantially smaller.", "artifacts": [ "evidence/images.json", "evidence/lighthouse-article.json", "evidence/article-summary.json" ], "suggestedFix": "Create responsive image variants, emit srcset/sizes, prefer AVIF/WebP when possible, and preserve lazy loading with dimensions.", "principleId": "be-sustainable", "principleCheckId": "optimised-assets", "guidanceId": "deliver-optimized-decorative-images", "guidanceCategory": "user-experience", "pathId": "article", "url": "https://www.ptt.cc/bbs/Stock/M.1784860040.A.486.html", "effort": "medium" } ], "taskList": [ { "id": "T001", "title": "Make the legacy template genuinely responsive", "priority": 1, "findingIds": [ "F004", "F006" ], "guidanceId": "fluid-scaling", "status": "open" }, { "id": "T002", "title": "Add security headers and correct cookie policy", "priority": 2, "findingIds": [ "F019" ], "guidanceId": "security", "status": "open" }, { "id": "T003", "title": "Reduce immediate tracking and duplicate analytics", "priority": 3, "findingIds": [ "F010", "F020" ], "guidanceId": "privacy", "status": "open" }, { "id": "T004", "title": "Restore accessible semantics, labels, alt text, focus, and link distinction", "priority": 4, "findingIds": [ "F006", "F011", "F012", "F013", "F022" ], "guidanceId": "accessibility", "status": "open" }, { "id": "T005", "title": "Shorten the render-critical path", "priority": 5, "findingIds": [ "F008", "F015" ], "guidanceId": "optimize-script-priority", "status": "open" }, { "id": "T006", "title": "Serve responsive, dimensioned images", "priority": 6, "findingIds": [ "F009", "F023" ], "guidanceId": "optimize-image-priority", "status": "open" }, { "id": "T007", "title": "Complete metadata and indexing infrastructure", "priority": 7, "findingIds": [ "F016", "F017", "F018" ], "guidanceId": "html", "status": "open" }, { "id": "T008", "title": "Replace custom dropdowns with anchored popovers", "priority": 8, "findingIds": [ "F003" ], "guidanceId": "position-aware-tooltips", "status": "open" }, { "id": "T009", "title": "Add useful 404 and offline recovery", "priority": 9, "findingIds": [ "F007", "F021" ], "guidanceId": "persistent-toast-notifications", "status": "open" }, { "id": "T010", "title": "Respect system theme and progressively add transitions", "priority": 10, "findingIds": [ "F001", "F002", "F005" ], "guidanceId": "dark-mode", "status": "open" }, { "id": "T011", "title": "Fix the missing favicon", "priority": 11, "findingIds": [ "F014" ], "guidanceId": "html", "status": "open" } ], "budget": { "pathCount": 7, "auditPasses": 1 }, "agent": "pi", "runId": "2026-07-24T05-18-02-041Z" }