{ "url": "https://steamcommunity.com", "auditedAt": "2026-07-19T19:40:57.048Z", "mode": "report", "status": "completed", "statusDetail": "Coverage-complete representative audit of eight public/unauthenticated paths. Authenticated posting, purchasing, cancellation, account settings, and destructive actions were not covered because no test account or transaction authority was provided.", "page": { "appType": "hybrid", "framework": "Legacy server-rendered templates plus JavaScript/React modules", "notes": "Public Steam Community MPA/hybrid. Dynamic feed content is JS-dependent; major interior templates remain navigable without authentication." }, "evidenceUsed": [ "screenshot", "dom", "evaluate-probe", "layout-metrics", "trace", "har", "headers", "cookies", "trackers", "images", "secrets", "discoverability", "heap-summary", "lighthouse", "HTTP fetch", "Modern Web Guidance 0.0.172" ], "guidanceConsulted": [ "dark-mode", "component-specific-light-dark-theme", "accessibility", "adapt-scrollbar-to-contrast-preferences", "same-document-transitions", "cross-document-transitions", "group-element-transitions", "faster-spa-view-transitions", "scrollytelling", "parallax-scroll-effects", "scroll-entry-exit-effects", "carousel-slide-effects", "physics-based-easing", "individual-transform-properties", "animate-element-entry-exit", "animate-to-from-top-layer", "animate-to-intrinsic-sizes", "dynamic-sibling-animations", "interactive-content-reveal", "pull-to-reveal", "swipe-to-remove", "shrinking-header-on-scroll", "scroll-progress-indicator", "scroll-position-aware-elements", "scroll-snap-realtime-feedback", "scroll-snap-state-sync", "scroll-target-on-load", "soft-edge-content-fade", "scrollability-affordance-hints", "anchor-positioning-tab-underline", "position-aware-tooltips", "interest-triggered-tooltips", "interest-triggered-action-previews", "directional-navigation-transitions", "carousel-snap-highlights", "navigation-drawer", "stack-drill-down", "persistent-app-tours", "persistent-toast-notifications", "light-dismiss-a-dialog", "platform-controls-dismiss-dialog", "declarative-dialog-popover-control", "animated-select-picker", "branded-select-styling", "brand-consistent-forms", "custom-select-picker-layouts", "rich-media-picker", "complex-shapes", "shaped-cutouts", "overflow-clipping-control", "visually-texture-content", "apply-webgl-shaders", "interactive-content-in-3d-scenes", "highlight-text-ranges", "prevent-text-wrapping", "customize-scrollbar-color-and-thickness", "export-html-media-from-canvas", "fluid-scaling", "calculate-with-intrinsic-sizes", "css-layout", "size-aware-styling", "content-based-styling", "child-state-based-styling", "design-token-reactivity", "dynamic-sibling-styling", "form-fields-automatically-fit-contents", "improve-text-layout-and-legibility", "forms", "accessible-error-announcement", "required-field-feedback", "validate-input-after-interaction", "identify-inp-causes", "schedule-tasks-by-priority", "optimize-preload-priority", "improve-next-page-load-performance", "interactions-in-complex-layouts", "performance", "visually-stable-font-fallbacks", "break-up-long-tasks", "identify-heavy-scripts", "optimize-script-priority", "defer-rendering-heavy-content", "defer-work-until-scroll-ends", "optimize-image-priority", "conditional-async-dependencies", "expose-canvas-content-to-browser-features", "move-dom-element-without-losing-state", "precise-text-alignment", "visually-stable-mixed-fonts", "css", "html", "reduce-style-repetition", "security", "privacy", "batch-analytics-events", "full-session-analytics", "calculate-total-foreground-time", "passkeys", "passkey-registration", "passkey-authentication", "passkey-reauthentication", "passkey-conditional-create", "passkey-management", "flicker-free-client-side-ab-testing", "consistent-cross-document-transitions", "stabilize-reactive-state", "resilient-context-menus-and-nested-dropdowns", "persistent-top-layer-ui", "detect-initial-visibility-state", "sequence-distributed-events", "translator", "language-detection", "support-global-calendar-systems", "capture-location-agnostic-data", "format-human-readable-durations", "manage-recurring-intervals", "calculate-event-differentials", "coordinate-global-events", "model-partial-time-concepts", "search-hidden-content", "select-menu-interaction", "style-parent-with-has", "autofill-address-form", "autofill-payment-form", "autofill-sign-in-form", "autofill-sign-up-form", "autofill-highlight-inputs", "deliver-optimized-decorative-images", "resolution-optimized-pseudo-elements", "deprioritize-background-fetches", "efficient-background-processing", "webmcp", "agentic-forms", "agentic-javascript-tools", "language-model", "summarizer" ], "artifacts": [ { "type": "screenshot", "path": "evidence/home-desktop.png", "caption": "Desktop community landing page", "condition": "desktop 1440x1000", "findingIds": [ "F04", "F07", "F15" ] }, { "type": "screenshot", "path": "evidence/home-mobile.png", "caption": "Mobile community landing page with consent overlay", "condition": "viewport 360x800", "findingIds": [ "F03", "F05", "F06", "F07", "F08" ] }, { "type": "screenshot", "path": "evidence/home-dark.png", "caption": "Landing page under dark preference", "condition": "prefers-color-scheme: dark", "findingIds": [ "F01" ] }, { "type": "screenshot", "path": "evidence/home-forced-colors.png", "caption": "Landing page in forced colors", "condition": "forced-colors: active; prefers-contrast: more", "findingIds": [] }, { "type": "dom", "path": "evidence/home-dom.json", "caption": "Rendered DOM, CSS and selected computed styles", "condition": "default", "findingIds": [ "F01", "F06", "F12" ] }, { "type": "other", "path": "evidence/home-recon.json", "caption": "Navigation, route and body-text recon", "condition": "default", "findingIds": [ "F28" ] }, { "type": "other", "path": "evidence/motion-modern-css.json", "caption": "Reduced-motion and modern CSS feature probe", "condition": "prefers-reduced-motion: reduce", "findingIds": [ "F02", "F04", "F07" ] }, { "type": "video", "path": "evidence/home-filter-transition.mp4", "caption": "Sampled feed filter/state transition", "condition": "desktop", "findingIds": [ "F02" ] }, { "type": "layout", "path": "evidence/home-layout-mobile.json", "caption": "Mobile overflow, CLS and long-task observations", "condition": "viewport 360x800", "findingIds": [ "F03", "F11" ] }, { "type": "trace", "path": "evidence/home-trace.json", "caption": "Raw DevTools performance trace", "condition": "desktop load", "findingIds": [] }, { "type": "trace-summary", "path": "evidence/home-trace-summary.json", "caption": "Compact performance trace summary", "condition": "desktop load", "findingIds": [ "F10" ] }, { "type": "har", "path": "evidence/home.har", "caption": "Network archive", "condition": "desktop load", "findingIds": [ "F12" ] }, { "type": "har-summary", "path": "evidence/home-summary.json", "caption": "Compact HAR/network summary", "condition": "desktop load", "findingIds": [ "F12", "F13", "F32", "F33" ] }, { "type": "lighthouse", "path": "evidence/lighthouse.json", "caption": "Lighthouse full JSON", "condition": "default mobile audit", "findingIds": [ "F13", "F14", "F15", "F19", "F21" ] }, { "type": "other", "path": "evidence/lighthouse-summary.json", "caption": "Compact Lighthouse category and metric summary", "condition": "default mobile audit", "findingIds": [ "F10", "F17" ] }, { "type": "other", "path": "evidence/headers.json", "caption": "Main response security headers", "condition": "default", "findingIds": [ "F24", "F26" ] }, { "type": "other", "path": "evidence/cookies.json", "caption": "Cookie attributes and lifetime probe", "condition": "default", "findingIds": [ "F24" ] }, { "type": "other", "path": "evidence/trackers.json", "caption": "Third-party origin/tracker probe", "condition": "default", "findingIds": [ "F33" ] }, { "type": "other", "path": "evidence/images.json", "caption": "Image sizing, loading, format and alt probe", "condition": "default", "findingIds": [ "F11", "F14", "F18", "F32" ] }, { "type": "other", "path": "evidence/secrets.json", "caption": "Client-side secret scan", "condition": "default", "findingIds": [] }, { "type": "discoverability", "path": "evidence/discoverability.json", "caption": "Raw HTML versus rendered-content comparison", "condition": "non-JS crawler", "findingIds": [ "F21", "F27" ] }, { "type": "screenshot", "path": "evidence/discoverability-rendered.png", "caption": "Browser-rendered view from discoverability comparison", "condition": "JavaScript enabled", "findingIds": [ "F21", "F27" ] }, { "type": "screenshot", "path": "evidence/discoverability-crawler.png", "caption": "Crawler/no-JS view from discoverability comparison", "condition": "JavaScript disabled", "findingIds": [ "F21", "F27" ] }, { "type": "heap", "path": "evidence/heap-baseline.json", "caption": "Baseline heap summary", "condition": "loaded home", "findingIds": [] }, { "type": "heap", "path": "evidence/heap-post-scroll.json", "caption": "Heap summary after ten repeated feed scroll cycles", "condition": "repeated interaction", "findingIds": [] }, { "type": "other", "path": "evidence/home-quality-probe.json", "caption": "Metadata, headings, landmarks, forms and semantics probe", "condition": "mobile", "findingIds": [ "F14", "F16", "F18", "F20", "F22", "F23", "F28" ] }, { "type": "other", "path": "evidence/targets-focus.json", "caption": "Touch-target dimensions and keyboard-focus probe", "condition": "mobile 360x800", "findingIds": [ "F08" ] }, { "type": "screenshot", "path": "evidence/discussions-desktop.png", "caption": "Discussion index", "condition": "desktop", "findingIds": [ "F05" ] }, { "type": "other", "path": "evidence/discussions-probe.json", "caption": "Discussion metadata/structure probe", "condition": "default", "findingIds": [ "F20" ] }, { "type": "screenshot", "path": "evidence/workshop-desktop.png", "caption": "Workshop index", "condition": "desktop", "findingIds": [] }, { "type": "other", "path": "evidence/workshop-probe.json", "caption": "Workshop metadata/structure probe", "condition": "default", "findingIds": [ "F16", "F20" ] }, { "type": "screenshot", "path": "evidence/market-desktop.png", "caption": "Community Market", "condition": "desktop", "findingIds": [] }, { "type": "other", "path": "evidence/market-probe.json", "caption": "Market metadata/structure probe", "condition": "default", "findingIds": [] }, { "type": "screenshot", "path": "evidence/app730-desktop.png", "caption": "Counter-Strike 2 app hub", "condition": "desktop", "findingIds": [] }, { "type": "other", "path": "evidence/app730-probe.json", "caption": "App hub metadata/structure probe", "condition": "default", "findingIds": [ "F16", "F23" ] }, { "type": "screenshot", "path": "evidence/login-desktop.png", "caption": "Sign-in page", "condition": "desktop", "findingIds": [ "F25" ] }, { "type": "other", "path": "evidence/login-probe.json", "caption": "Sign-in labels, autocomplete and passkey probe", "condition": "mobile", "findingIds": [ "F25", "F30", "F31" ] }, { "type": "other", "path": "evidence/login-empty-submit.json", "caption": "Empty login submission result", "condition": "mobile", "findingIds": [ "F30" ] }, { "type": "screenshot", "path": "evidence/not-found.png", "caption": "Invalid-route result", "condition": "desktop", "findingIds": [ "F09", "F29" ] }, { "type": "other", "path": "evidence/not-found-probe.json", "caption": "Invalid-route redirect/recovery probe", "condition": "default", "findingIds": [ "F09", "F29" ] }, { "type": "screenshot", "path": "evidence/home-japanese-mobile.png", "caption": "Japanese locale mobile rendering", "condition": "mobile 360x800", "findingIds": [] }, { "type": "other", "path": "evidence/robots-sitemap.txt", "caption": "robots.txt and sitemap.xml HTTP responses", "condition": "HTTP fetch", "findingIds": [ "F22" ] } ], "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 evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "DOM computed styles report color-scheme: normal and the dark-emulated screenshot is materially identical to the default dark surface.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dom.json", "evidence/home-dark.png" ], "findingIds": [ "F01" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-reduced-motion", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "evaluate under prefers-reduced-motion: reduce found zero active animations; no auto-advance was observed.", "pathIds": [ "home" ], "artifacts": [ "evidence/motion-modern-css.json" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-contrast", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "forced-colors screenshot retained visible text, controls, borders and links across the first viewport.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-forced-colors.png" ] }, { "principleId": "implement-natural-interactions", "checkId": "view-transitions", "status": "issues", "confidence": "medium", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "The reduced-motion/modern-CSS probe found no view-transition CSS, and the sampled feed/filter navigation uses abrupt page/state replacement.", "pathIds": [ "home" ], "artifacts": [ "evidence/motion-modern-css.json", "evidence/home-filter-transition.mp4" ], "findingIds": [ "F02" ] }, { "principleId": "implement-natural-interactions", "checkId": "scroll-driven-animations", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "CSS/animation probe found no scroll-linked animation and the layout observer showed only two bounded long tasks, so no main-thread scroll-animation anti-pattern was observed.", "pathIds": [ "home" ], "artifacts": [ "evidence/motion-modern-css.json" ] }, { "principleId": "implement-natural-interactions", "checkId": "physical-gestures", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "Mobile browsing uses native page scrolling with no observed custom pointer interaction fighting scrolling; layout has no horizontal overflow.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-mobile.png" ] }, { "principleId": "provide-guided-navigation", "checkId": "scroll-state-aware-chrome", "status": "issues", "confidence": "medium", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "Desktop and mobile screenshots show static chrome on a very long 15,707px feed; CSS inspection found no scroll-state or animation-timeline rules.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-mobile.png", "evidence/home-layout-mobile.json" ], "findingIds": [ "F03" ] }, { "principleId": "provide-guided-navigation", "checkId": "anchored-positioning", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "Sampled menus, search controls and fixed consent surface remained aligned within the viewport on desktop and mobile; no drifting edge overlay was observed.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-mobile.png" ] }, { "principleId": "provide-guided-navigation", "checkId": "directs-attention", "status": "issues", "confidence": "medium", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "Feed category/filter controls swap content without transition/highlight continuity; no View Transition or scroll-marker rules were found.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-desktop.png", "evidence/motion-modern-css.json" ], "findingIds": [ "F04" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "no-intrusive-interruptions", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "On the 360x800 capture the fixed cookie panel covers roughly the lower third of the first viewport and overlaps feed cards; it also overlays every desktop archetype.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-mobile.png", "evidence/discussions-desktop.png" ], "findingIds": [ "F05" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "semantic-dismissible-primitives", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "DOM/CSS evidence identifies .cookiepreferences_popup and .cookiepreferences_popup_content custom containers; no dialog/popover primitive is present.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dom.json", "evidence/home-mobile.png" ], "findingIds": [ "F06" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "reduced-chrome", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "Across home, discussions, Workshop, Market and app hub, most of the viewport is allocated to the requested community content rather than decorative application framing.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-desktop.png" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "responsive-no-horizontal-scroll", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "Mobile layout primitive measured scrollWidth=clientWidth=360 with zero horizontal overflow and a valid viewport meta tag.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-layout-mobile.json" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "component-level-responsiveness", "status": "issues", "confidence": "medium", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "The CSS probe found no @container/container-type usage; reused cards, search panels, and navigation are adapted only by global responsive CSS.", "pathIds": [ "home" ], "artifacts": [ "evidence/motion-modern-css.json", "evidence/home-desktop.png", "evidence/home-mobile.png" ], "findingIds": [ "F07" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "input-modality-aware", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "At 360px, the active probe measured 95 of 100 visible links/controls below 44px in at least one dimension, including 15px-tall hub links and 18px search buttons. Keyboard focus was visible, but touch sizing was not adequate.", "pathIds": [ "home" ], "artifacts": [ "evidence/targets-focus.json", "evidence/home-mobile.png" ], "findingIds": [ "F08" ] }, { "principleId": "support-core-task-success", "checkId": "clear-purpose-and-primary-action", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "Screenshots show explicit page purposes and relevant actions: Find Hubs/People, search discussions, Browse Workshops, Market search, and sign in.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-desktop.png" ] }, { "principleId": "support-core-task-success", "checkId": "primary-flow-completion", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "Unauthenticated browse flows completed through homepage, discussions, Workshop, Market, app hub and login using crawlable navigation; account-required actions are clearly labeled.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-recon.json" ] }, { "principleId": "support-core-task-success", "checkId": "clear-system-state-and-recovery", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "Navigating to a deliberately invalid path ended at https://steamcommunity.com/ with no 404 explanation, preserved path, or recovery message.", "pathIds": [ "not-found" ], "artifacts": [ "evidence/not-found.png", "evidence/not-found-probe.json" ], "findingIds": [ "F09" ] }, { "principleId": "be-fast-and-stable", "checkId": "good-core-web-vitals", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "Lighthouse measured LCP 13.6s, FCP 8.3s, CLS 0.391, Speed Index 11.5s, and performance 0.33; the CDP trace corroborated LCP 12.7s.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-summary.json", "evidence/home-trace-summary.json" ], "findingIds": [ "F10" ] }, { "principleId": "be-fast-and-stable", "checkId": "visual-stability", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "The layout observer recorded CLS 0.421, including a 0.403 shift, while 84 of 99 images lacked explicit dimensions.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-layout-mobile.json", "evidence/images.json" ], "findingIds": [ "F11" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-main-thread", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "Trace found one 105ms long task and 55ms total blocking time; scripting is not the dominant observed bottleneck compared with network/LCP.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-trace-summary.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-resource-delivery", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "HAR recorded 115 requests and 5.88MB transferred, with 15 parser-inserted high-priority stylesheets; images contributed 4.57MB. Confirmed stylesheets are linked from the document head.", "pathIds": [ "home" ], "artifacts": [ "evidence/home.har", "evidence/home-summary.json", "evidence/home-dom.json" ], "findingIds": [ "F12" ] }, { "principleId": "be-fast-and-stable", "checkId": "trim-unused-and-duplicate-code", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "Lighthouse estimated 1,111KiB unused JavaScript and 105KiB unused CSS; the HAR includes 28 scripts totaling about 996KB transferred.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse.json", "evidence/home-summary.json" ], "findingIds": [ "F13" ] }, { "principleId": "be-inclusive", "checkId": "names-roles-labels", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "Lighthouse failed image-alt (92 nodes), label (2 controls), link-name (24 links), and select-name; the image probe found 95 of 99 images without alt.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse.json", "evidence/images.json", "evidence/home-quality-probe.json" ], "findingIds": [ "F14" ] }, { "principleId": "be-inclusive", "checkId": "sufficient-contrast", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "Lighthouse reported 3.36:1 search-field text and 3.1:1 card link text against dark backgrounds, below WCAG AA for normal text.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse.json", "evidence/home-desktop.png" ], "findingIds": [ "F15" ] }, { "principleId": "be-inclusive", "checkId": "structure-and-focus", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "The homepage has no headings, Workshop has no h1-h3, and the app hub starts at h3; landmarks exist and sampled keyboard focus is visible.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-quality-probe.json", "evidence/workshop-probe.json", "evidence/app730-probe.json" ], "findingIds": [ "F16" ] }, { "principleId": "be-inclusive", "checkId": "legible-text", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "Desktop/mobile screenshots show readable line lengths and no clipping or horizontal overflow; contrast exceptions are recorded separately.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-desktop.png" ] }, { "principleId": "be-inclusive", "checkId": "zoom-reflow-targets-and-media", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "Viewport permits normal scaling and 360px reflow has no horizontal overflow; no autoplay video/audio was present on the sampled first viewport. Touch-size failures are recorded under input modality.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-layout-mobile.json" ] }, { "principleId": "follow-best-practices", "checkId": "no-console-errors", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "Lighthouse captured repeated console.error messages: “Missing config element # application_config” from community/main.js.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-summary.json" ], "findingIds": [ "F17" ] }, { "principleId": "follow-best-practices", "checkId": "sound-document-and-assets", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "Although doctype/UTF-8 are valid, 84 of 99 images lacked width/height and 14 were oversized; this aligns with observed layout shift.", "pathIds": [ "home" ], "artifacts": [ "evidence/images.json", "evidence/home-quality-probe.json" ], "findingIds": [ "F18" ] }, { "principleId": "follow-best-practices", "checkId": "browser-platform-hygiene", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "Lighthouse reports a deprecated unload listener in prototype-1.7.js, a known BFCache blocker pattern.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse.json" ], "findingIds": [ "F19" ] }, { "principleId": "be-discoverable", "checkId": "title-and-description", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "Direct DOM probes found no meta description on the homepage, discussions, workshop, market, app hub, or login; titles are present and unique on interior templates.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-quality-probe.json", "evidence/discussions-probe.json", "evidence/workshop-probe.json" ], "findingIds": [ "F20" ] }, { "principleId": "be-discoverable", "checkId": "crawlable-and-mobile-friendly", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "Discoverability measured only 10% rendered-word coverage in raw HTML; Lighthouse failed crawlable-anchors with 30 nodes and link-name with 24.", "pathIds": [ "home" ], "artifacts": [ "evidence/discoverability.json", "evidence/discoverability-rendered.png", "evidence/discoverability-crawler.png", "evidence/lighthouse.json" ], "findingIds": [ "F21" ] }, { "principleId": "be-discoverable", "checkId": "canonical-and-indexing-signals", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "The homepage and representative templates expose no canonical link; /sitemap.xml redirects to the homepage rather than returning a sitemap, while robots.txt otherwise allows public sections.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-quality-probe.json", "evidence/robots-sitemap.txt" ], "findingIds": [ "F22" ] }, { "principleId": "be-discoverable", "checkId": "structured-and-shareable-metadata", "status": "issues", "confidence": "medium", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "The homepage has Open Graph metadata but zero JSON-LD blocks; game/app and market templates expose rich entities that could be described without changing visible content.", "pathIds": [ "apphub" ], "artifacts": [ "evidence/home-quality-probe.json", "evidence/app730-probe.json" ], "findingIds": [ "F23" ] }, { "principleId": "be-private-and-secure", "checkId": "secure-transport-and-headers", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "The page is HTTPS, but the headers probe found no CSP, HSTS, nosniff, frame protection, Referrer-Policy, or Permissions-Policy. The timezoneOffset cookie is not Secure, and sessionid is not HttpOnly; all three cookies report SameSite=None.", "pathIds": [ "home" ], "artifacts": [ "evidence/headers.json", "evidence/cookies.json" ], "findingIds": [ "F24" ] }, { "principleId": "be-private-and-secure", "checkId": "data-minimisation-and-third-parties", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "Tracker probe found no known analytics/tracker domains and secrets scan found no exposed credential; third-party origins are Steam CDNs/user media rather than observed behavioral trackers.", "pathIds": [ "home" ], "artifacts": [ "evidence/trackers.json" ] }, { "principleId": "be-private-and-secure", "checkId": "in-context-permissions-and-modern-auth", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "The login probe found no WebAuthn/passkey usage. Username/password fields have labels but empty autocomplete attributes. No permission prompt fired on load.", "pathIds": [ "login" ], "artifacts": [ "evidence/login-probe.json", "evidence/login-desktop.png" ], "findingIds": [ "F25" ] }, { "principleId": "be-private-and-secure", "checkId": "defensive-browser-policies", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "The main response lacks HSTS, clickjacking protection, Referrer-Policy, Permissions-Policy, and CSP; no frame-ancestors policy is available as a fallback.", "pathIds": [ "home" ], "artifacts": [ "evidence/headers.json" ], "findingIds": [ "F26" ] }, { "principleId": "be-resilient", "checkId": "progressive-enhancement", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "Raw HTML includes only 10% of rendered content words. The crawler screenshot contains far less community content than the browser view, though the page is not an empty shell.", "pathIds": [ "home" ], "artifacts": [ "evidence/discoverability.json", "evidence/discoverability-rendered.png", "evidence/discoverability-crawler.png" ], "findingIds": [ "F27" ] }, { "principleId": "be-resilient", "checkId": "resilient-runtime-behaviour", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "Representative menus, listings and app/detail templates rendered without clipped overlays or blank runtime states; all sampled requests returned 200 in HAR.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json" ] }, { "principleId": "be-resilient", "checkId": "offline-and-installable", "status": "issues", "confidence": "medium", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "The homepage probe found no web app manifest, and recon exposed no service-worker-backed offline fallback.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-quality-probe.json", "evidence/home-recon.json" ], "findingIds": [ "F28" ] }, { "principleId": "be-resilient", "checkId": "network-and-http-failure-states", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "A nonexistent route silently redirected to the normal homepage with no error, retry, explanation, or correct visible state.", "pathIds": [ "not-found" ], "artifacts": [ "evidence/not-found-probe.json", "evidence/not-found.png" ], "findingIds": [ "F29" ] }, { "principleId": "be-internationalised", "checkId": "lang-dir-and-logical-properties", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "Document declares lang=en, exposes an extensive locale selector, and the Japanese mobile route reflowed without clipping.", "pathIds": [ "locale-ja" ], "artifacts": [ "evidence/home-japanese-mobile.png" ] }, { "principleId": "be-internationalised", "checkId": "locale-aware-data", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "The locale parameter rendered a translated Japanese interface and dynamic counts/timestamps remained integrated in the localized layout.", "pathIds": [ "locale-ja" ], "artifacts": [ "evidence/home-japanese-mobile.png" ] }, { "principleId": "be-internationalised", "checkId": "time-zone-correctness", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "The site sets a timezoneOffset cookie and presents relative activity times, avoiding ambiguous wall-clock timestamps on the sampled public surfaces.", "pathIds": [ "home" ], "artifacts": [ "evidence/cookies.json" ] }, { "principleId": "be-trustworthy", "checkId": "no-dark-patterns", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "Consent presents equally available Accept All and Reject All actions and persistent cookie/privacy links; sampled browse and market pages show commitments and account gates plainly.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-desktop.png" ] }, { "principleId": "be-trustworthy", "checkId": "humane-error-handling", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "After submitting the empty login form, focus moved to the username input but no role=alert or visible error message was present.", "pathIds": [ "login" ], "artifacts": [ "evidence/login-empty-submit.json", "evidence/login-probe.json" ], "findingIds": [ "F30" ] }, { "principleId": "be-trustworthy", "checkId": "trustworthy-input-assistance", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "The username and password inputs have empty autocomplete values despite representing established sign-in concepts.", "pathIds": [ "login" ], "artifacts": [ "evidence/login-probe.json" ], "findingIds": [ "F31" ] }, { "principleId": "be-trustworthy", "checkId": "safe-commercial-and-account-flows", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "Market prices and the login requirement are visible before gated actions; sign-in offers recovery and QR sign-in. Passkey/autofill shortcomings are recorded in dedicated checks.", "pathIds": [ "market" ], "artifacts": [ "evidence/market-desktop.png" ] }, { "principleId": "be-sustainable", "checkId": "optimised-assets", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "HAR attributes 4.57MB of 5.88MB to 66 images; the image probe found 84 non-lazy below-fold images, 35 legacy-format images, 21 missing responsive sources, and a 1.07MB top image.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json", "evidence/images.json" ], "findingIds": [ "F32" ] }, { "principleId": "be-sustainable", "checkId": "no-wasteful-work", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "HAR observed only two XHR/fetch requests and trace TBT was 55ms; no continuous autoplay/background processing was observed.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json" ] }, { "principleId": "be-sustainable", "checkId": "third-party-and-media-budget", "status": "issues", "confidence": "high", "method": "Active evidence review using the linked primitive/tool artifacts across representative paths.", "evidence": "111 of 115 requests and 5.81MB are classified as third-party origins (mostly Steam CDNs/user content), with user images dominating bytes; these are operational CDNs rather than known trackers but still consume the initial budget.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json", "evidence/trackers.json" ], "findingIds": [ "F33" ] }, { "principleId": "be-agent-ready", "checkId": "structured-agent-capabilities", "status": "not-applicable", "confidence": "medium", "method": "Recon plus DOM/source-surface inspection for declared or visible agent-facing intent.", "evidence": "No WebMCP, agentic workflow, or on-device-inference intent is declared or visible for this public community browsing audit.", "reason": "This emerging contextual check applies only where the site intends to expose agent capabilities; no such intent or surface was observed." }, { "principleId": "be-agent-ready", "checkId": "on-device-inference", "status": "not-applicable", "confidence": "medium", "method": "Recon plus DOM/source-surface inspection for declared or visible agent-facing intent.", "evidence": "No WebMCP, agentic workflow, or on-device-inference intent is declared or visible for this public community browsing audit.", "reason": "This emerging contextual check applies only where the site intends to expose agent capabilities; no such intent or surface was observed." }, { "principleId": "be-memory-efficient", "checkId": "no-leak-under-repeated-interaction", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "After ten repeated feed scroll cycles, heap self size was 30.16MB versus 30.11MB baseline (+0.17%) and node count +0.26%, consistent with bounded noise rather than unbounded retained growth.", "pathIds": [ "home" ], "artifacts": [ "evidence/heap-post-scroll.json" ] }, { "principleId": "be-memory-efficient", "checkId": "bounded-footprint", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "Heap summary measured about 30.1MB self size for a media-rich feed; the footprint remained proportionate and stable across the repeated-interaction sample.", "pathIds": [ "home" ], "artifacts": [ "evidence/heap-baseline.json" ] }, { "principleId": "be-memory-efficient", "checkId": "no-detached-dom-or-unbounded-listeners", "status": "pass", "confidence": "medium", "method": "Direct visual/objective inspection using the linked artifact under the stated representative condition.", "evidence": "Before/after heap summaries contain no Detached* constructor signature and show negligible aggregate growth after repeated scrolling.", "pathIds": [ "home" ], "artifacts": [ "evidence/heap-post-scroll.json" ] } ], "principleOutcomes": [ { "principleId": "respect-user-preferences", "expectation": "default", "status": "issues", "findingIds": [ "F01" ] }, { "principleId": "implement-natural-interactions", "expectation": "default", "status": "issues", "findingIds": [ "F02" ] }, { "principleId": "provide-guided-navigation", "expectation": "default", "status": "issues", "findingIds": [ "F03", "F04" ] }, { "principleId": "maximize-content-reduce-noise", "expectation": "default", "status": "issues", "findingIds": [ "F05", "F06" ] }, { "principleId": "adapt-to-the-form-factor", "expectation": "default", "status": "issues", "findingIds": [ "F07", "F08" ] }, { "principleId": "support-core-task-success", "expectation": "default", "status": "issues", "findingIds": [ "F09" ] }, { "principleId": "be-fast-and-stable", "expectation": "default", "status": "issues", "findingIds": [ "F10", "F11", "F12", "F13" ] }, { "principleId": "be-inclusive", "expectation": "default", "status": "issues", "findingIds": [ "F14", "F15", "F16" ] }, { "principleId": "follow-best-practices", "expectation": "default", "status": "issues", "findingIds": [ "F17", "F18", "F19" ] }, { "principleId": "be-discoverable", "expectation": "default", "status": "issues", "findingIds": [ "F20", "F21", "F22", "F23" ] }, { "principleId": "be-private-and-secure", "expectation": "default", "status": "issues", "findingIds": [ "F24", "F25", "F26" ] }, { "principleId": "be-resilient", "expectation": "contextual", "status": "issues", "findingIds": [ "F27", "F28", "F29" ] }, { "principleId": "be-internationalised", "expectation": "contextual", "status": "pass" }, { "principleId": "be-trustworthy", "expectation": "default", "status": "issues", "findingIds": [ "F30", "F31" ] }, { "principleId": "be-sustainable", "expectation": "contextual", "status": "issues", "findingIds": [ "F32", "F33" ] }, { "principleId": "be-agent-ready", "expectation": "contextual", "status": "not-applicable", "reason": "No agent-facing intent or structured agent capability is declared or visible; this emerging contextual principle was judged outside the current site intent." }, { "principleId": "be-memory-efficient", "expectation": "default", "status": "pass" } ], "paths": [ { "id": "home", "description": "Community landing/feed: primary discovery surface and global chrome.", "url": "https://steamcommunity.com/", "conditions": [ "desktop 1440x1000", "mobile 360x800", "prefers-color-scheme: dark", "forced-colors: active", "prefers-reduced-motion: reduce" ], "result": "issues" }, { "id": "discussions", "description": "Discussion index: representative forum/listing and search journey.", "url": "https://steamcommunity.com/discussions/", "conditions": [ "desktop 1440x1000" ], "result": "issues" }, { "id": "workshop", "description": "Workshop index: representative dense catalog/listing template.", "url": "https://steamcommunity.com/workshop/", "conditions": [ "desktop 1440x1000" ], "result": "issues" }, { "id": "market", "description": "Community Market: commercial listing and account-gated action surface.", "url": "https://steamcommunity.com/market/", "conditions": [ "desktop 1440x1000" ], "result": "issues" }, { "id": "apphub", "description": "Counter-Strike 2 hub: representative game detail/community template.", "url": "https://steamcommunity.com/app/730", "conditions": [ "desktop 1440x1000" ], "result": "issues" }, { "id": "login", "description": "Sign-in: primary authentication form and empty-submit recovery.", "url": "https://steamcommunity.com/login/home/?goto=", "conditions": [ "desktop 1440x1000", "mobile 360x800", "empty submit" ], "result": "issues" }, { "id": "not-found", "description": "Invalid route: HTTP/runtime failure-recovery behavior.", "url": "https://steamcommunity.com/this-route-does-not-exist-web-uplift", "conditions": [ "desktop 1440x1000" ], "result": "issues" }, { "id": "locale-ja", "description": "Japanese locale: representative translated narrow-screen rendering.", "url": "https://steamcommunity.com/?l=japanese", "conditions": [ "mobile 360x800" ], "result": "pass" } ], "findings": [ { "id": "F01", "severity": "medium", "confidence": "high", "summary": "The theme is hard-coded dark rather than adapting to the user color-scheme preference.", "evidence": "DOM computed styles report color-scheme: normal and the dark-emulated screenshot is materially identical to the default dark surface.", "artifacts": [ "evidence/home-dom.json", "evidence/home-dark.png" ], "suggestedFix": "Declare color-scheme and express light/dark tokens with prefers-color-scheme or light-dark(), retaining a coherent fallback.", "effort": "medium", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "respect-user-preferences", "principleCheckId": "respects-color-scheme", "guidanceId": "dark-mode", "guidanceCategory": "user-experience" }, { "id": "F02", "severity": "low", "confidence": "medium", "summary": "Browse/filter and route changes do not use View Transitions.", "evidence": "The reduced-motion/modern-CSS probe found no view-transition CSS, and the sampled feed/filter navigation uses abrupt page/state replacement.", "artifacts": [ "evidence/motion-modern-css.json", "evidence/home-filter-transition.mp4" ], "suggestedFix": "Progressively add same-document and cross-document View Transitions to feed filters and same-origin template navigation, with reduced-motion handling.", "effort": "medium", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "implement-natural-interactions", "principleCheckId": "view-transitions", "guidanceId": "same-document-transitions", "guidanceCategory": "user-experience" }, { "id": "F03", "severity": "low", "confidence": "medium", "summary": "Navigation chrome does not respond to scroll state or expose reading/feed position.", "evidence": "Desktop and mobile screenshots show static chrome on a very long 15,707px feed; CSS inspection found no scroll-state or animation-timeline rules.", "artifacts": [ "evidence/home-mobile.png", "evidence/home-layout-mobile.json" ], "suggestedFix": "Use sticky chrome with scroll-state container queries or a lightweight declarative progress/scrollability affordance where it aids orientation.", "effort": "small", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "provide-guided-navigation", "principleCheckId": "scroll-state-aware-chrome", "guidanceId": "shrinking-header-on-scroll", "guidanceCategory": "user-experience" }, { "id": "F04", "severity": "medium", "confidence": "medium", "summary": "State changes provide weak continuity cues.", "evidence": "Feed category/filter controls swap content without transition/highlight continuity; no View Transition or scroll-marker rules were found.", "artifacts": [ "evidence/home-desktop.png", "evidence/motion-modern-css.json" ], "suggestedFix": "Add active-state, directional transition, and focus/scroll restoration cues to filtering and drill-down navigation.", "effort": "medium", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "provide-guided-navigation", "principleCheckId": "directs-attention", "guidanceId": "directional-navigation-transitions", "guidanceCategory": "user-experience" }, { "id": "F05", "severity": "medium", "confidence": "high", "summary": "The cookie prompt obscures a large share of core content on every sampled template.", "evidence": "On the 360x800 capture the fixed cookie panel covers roughly the lower third of the first viewport and overlaps feed cards; it also overlays every desktop archetype.", "artifacts": [ "evidence/home-mobile.png", "evidence/discussions-desktop.png" ], "suggestedFix": "Reduce the prompt footprint, reserve non-overlapping space where possible, and keep equally prominent accept/reject controls with persistent settings access.", "effort": "small", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "maximize-content-reduce-noise", "principleCheckId": "no-intrusive-interruptions", "guidanceId": "light-dismiss-a-dialog", "guidanceCategory": "user-experience" }, { "id": "F06", "severity": "low", "confidence": "high", "summary": "The consent overlay is custom div-based chrome rather than a semantic dialog/popover primitive.", "evidence": "DOM/CSS evidence identifies .cookiepreferences_popup and .cookiepreferences_popup_content custom containers; no dialog/popover primitive is present.", "artifacts": [ "evidence/home-dom.json", "evidence/home-mobile.png" ], "suggestedFix": "Use a semantic dialog when modality is required, or a non-modal popover/banner when it is not, with declarative dismiss behavior and correct focus semantics.", "effort": "medium", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "maximize-content-reduce-noise", "principleCheckId": "semantic-dismissible-primitives", "guidanceId": "declarative-dialog-popover-control", "guidanceCategory": "user-experience" }, { "id": "F07", "severity": "low", "confidence": "medium", "summary": "Responsive behavior is viewport-wide rather than component-aware.", "evidence": "The CSS probe found no @container/container-type usage; reused cards, search panels, and navigation are adapted only by global responsive CSS.", "artifacts": [ "evidence/motion-modern-css.json", "evidence/home-desktop.png", "evidence/home-mobile.png" ], "suggestedFix": "Introduce container queries for reusable cards, search panels, and navigation modules while retaining viewport fallbacks.", "effort": "medium", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "adapt-to-the-form-factor", "principleCheckId": "component-level-responsiveness", "guidanceId": "size-aware-styling", "guidanceCategory": "user-experience" }, { "id": "F08", "severity": "high", "confidence": "high", "summary": "Most sampled interactive targets are smaller than the recommended touch target.", "evidence": "At 360px, the active probe measured 95 of 100 visible links/controls below 44px in at least one dimension, including 15px-tall hub links and 18px search buttons. Keyboard focus was visible, but touch sizing was not adequate.", "artifacts": [ "evidence/targets-focus.json", "evidence/home-mobile.png" ], "suggestedFix": "Increase hit areas to at least 44x44 CSS px where feasible using padding/pseudo-elements, preserve spacing, and retain visible :focus-visible styles.", "effort": "medium", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "adapt-to-the-form-factor", "principleCheckId": "input-modality-aware", "guidanceId": "accessibility", "guidanceCategory": "accessibility" }, { "id": "F09", "severity": "medium", "confidence": "high", "summary": "Invalid routes fail silently by redirecting to the homepage.", "evidence": "Navigating to a deliberately invalid path ended at https://steamcommunity.com/ with no 404 explanation, preserved path, or recovery message.", "artifacts": [ "evidence/not-found.png", "evidence/not-found-probe.json" ], "suggestedFix": "Return a real 404 state with a clear explanation, search, links to major sections, and the correct HTTP status instead of silently redirecting.", "effort": "small", "pathId": "not-found", "url": "https://steamcommunity.com/this-route-does-not-exist-web-uplift", "principleId": "support-core-task-success", "principleCheckId": "clear-system-state-and-recovery", "guidanceId": "persistent-toast-notifications", "guidanceCategory": "user-experience" }, { "id": "F10", "severity": "high", "confidence": "high", "summary": "Load performance is far outside good Core Web Vitals ranges.", "evidence": "Lighthouse measured LCP 13.6s, FCP 8.3s, CLS 0.391, Speed Index 11.5s, and performance 0.33; the CDP trace corroborated LCP 12.7s.", "artifacts": [ "evidence/lighthouse-summary.json", "evidence/home-trace-summary.json" ], "suggestedFix": "Prioritize the LCP path, reduce blocking styles/scripts and image bytes, reserve layout space, and validate under representative mobile/network conditions.", "effort": "large", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "be-fast-and-stable", "principleCheckId": "good-core-web-vitals", "guidanceId": "performance", "guidanceCategory": "performance" }, { "id": "F11", "severity": "high", "confidence": "high", "summary": "The mobile feed has severe cumulative layout shift.", "evidence": "The layout observer recorded CLS 0.421, including a 0.403 shift, while 84 of 99 images lacked explicit dimensions.", "artifacts": [ "evidence/home-layout-mobile.json", "evidence/images.json" ], "suggestedFix": "Reserve image/media space with width/height or aspect-ratio, stabilize fonts, and prevent late consent/feed insertion from moving existing content.", "effort": "medium", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "be-fast-and-stable", "principleCheckId": "visual-stability", "guidanceId": "visually-stable-font-fallbacks", "guidanceCategory": "user-experience" }, { "id": "F12", "severity": "high", "confidence": "high", "summary": "The critical delivery path is heavy and highly render-blocking.", "evidence": "HAR recorded 115 requests and 5.88MB transferred, with 15 parser-inserted high-priority stylesheets; images contributed 4.57MB. Confirmed stylesheets are linked from the document head.", "artifacts": [ "evidence/home.har", "evidence/home-summary.json", "evidence/home-dom.json" ], "suggestedFix": "Consolidate/split critical CSS, defer non-critical styles, prioritize only the LCP asset, and reduce initial image payload.", "effort": "large", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "be-fast-and-stable", "principleCheckId": "efficient-resource-delivery", "guidanceId": "optimize-image-priority", "guidanceCategory": "performance" }, { "id": "F13", "severity": "medium", "confidence": "high", "summary": "The page ships substantial unused CSS and JavaScript.", "evidence": "Lighthouse estimated 1,111KiB unused JavaScript and 105KiB unused CSS; the HAR includes 28 scripts totaling about 996KB transferred.", "artifacts": [ "evidence/lighthouse.json", "evidence/home-summary.json" ], "suggestedFix": "Code-split by community surface, remove legacy/duplicate dependencies, and defer modules until the relevant interaction.", "effort": "large", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "be-fast-and-stable", "principleCheckId": "trim-unused-and-duplicate-code", "guidanceId": "identify-heavy-scripts", "guidanceCategory": "performance" }, { "id": "F14", "severity": "high", "confidence": "high", "summary": "Core images, search fields, and links lack accessible names or labels.", "evidence": "Lighthouse failed image-alt (92 nodes), label (2 controls), link-name (24 links), and select-name; the image probe found 95 of 99 images without alt.", "artifacts": [ "evidence/lighthouse.json", "evidence/images.json", "evidence/home-quality-probe.json" ], "suggestedFix": "Add meaningful alt text or empty alt for decorative images, explicit labels for search/select controls, and names for icon-only links.", "effort": "medium", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "be-inclusive", "principleCheckId": "names-roles-labels", "guidanceId": "accessibility", "guidanceCategory": "accessibility" }, { "id": "F15", "severity": "medium", "confidence": "high", "summary": "Important text and search controls have insufficient contrast.", "evidence": "Lighthouse reported 3.36:1 search-field text and 3.1:1 card link text against dark backgrounds, below WCAG AA for normal text.", "artifacts": [ "evidence/lighthouse.json", "evidence/home-desktop.png" ], "suggestedFix": "Raise text/token contrast to at least 4.5:1 for normal text and test interactive states across the dark palette.", "effort": "small", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "be-inclusive", "principleCheckId": "sufficient-contrast", "guidanceId": "accessibility", "guidanceCategory": "accessibility" }, { "id": "F16", "severity": "medium", "confidence": "high", "summary": "Heading structure is missing or inconsistent on major templates.", "evidence": "The homepage has no headings, Workshop has no h1-h3, and the app hub starts at h3; landmarks exist and sampled keyboard focus is visible.", "artifacts": [ "evidence/home-quality-probe.json", "evidence/workshop-probe.json", "evidence/app730-probe.json" ], "suggestedFix": "Give each page one descriptive h1, nest section headings in order, and preserve the existing landmark/focus behavior.", "effort": "small", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "be-inclusive", "principleCheckId": "structure-and-focus", "guidanceId": "accessibility", "guidanceCategory": "accessibility" }, { "id": "F17", "severity": "low", "confidence": "high", "summary": "Production JavaScript logs repeated console errors.", "evidence": "Lighthouse captured repeated console.error messages: “Missing config element # application_config” from community/main.js.", "artifacts": [ "evidence/lighthouse-summary.json" ], "suggestedFix": "Do not initialize modules that require absent configuration; guard startup and remove repeated production errors.", "effort": "small", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "follow-best-practices", "principleCheckId": "no-console-errors", "guidanceId": "html", "guidanceCategory": "html" }, { "id": "F18", "severity": "medium", "confidence": "high", "summary": "Image sizing and asset markup are not robust.", "evidence": "Although doctype/UTF-8 are valid, 84 of 99 images lacked width/height and 14 were oversized; this aligns with observed layout shift.", "artifacts": [ "evidence/images.json", "evidence/home-quality-probe.json" ], "suggestedFix": "Emit intrinsic dimensions and responsive source metadata for every content image, and avoid oversized raster UI assets.", "effort": "medium", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "follow-best-practices", "principleCheckId": "sound-document-and-assets", "guidanceId": "html", "guidanceCategory": "html" }, { "id": "F19", "severity": "medium", "confidence": "high", "summary": "Legacy runtime behavior blocks modern browser lifecycle features.", "evidence": "Lighthouse reports a deprecated unload listener in prototype-1.7.js, a known BFCache blocker pattern.", "artifacts": [ "evidence/lighthouse.json" ], "suggestedFix": "Remove unload handlers, migrate lifecycle work to pagehide/visibilitychange where needed, and retire the legacy Prototype dependency.", "effort": "medium", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "follow-best-practices", "principleCheckId": "browser-platform-hygiene", "guidanceId": "html", "guidanceCategory": "html" }, { "id": "F20", "severity": "medium", "confidence": "high", "summary": "Representative pages lack descriptive meta descriptions.", "evidence": "Direct DOM probes found no meta description on the homepage, discussions, workshop, market, app hub, or login; titles are present and unique on interior templates.", "artifacts": [ "evidence/home-quality-probe.json", "evidence/discussions-probe.json", "evidence/workshop-probe.json" ], "suggestedFix": "Add unique, concise meta descriptions matching visible content to each public page template.", "effort": "small", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "be-discoverable", "principleCheckId": "title-and-description", "guidanceId": "html", "guidanceCategory": "html" }, { "id": "F21", "severity": "high", "confidence": "high", "summary": "Most dynamic community content is unavailable to non-JavaScript crawlers, and many links are not crawlable/named cleanly.", "evidence": "Discoverability measured only 10% rendered-word coverage in raw HTML; Lighthouse failed crawlable-anchors with 30 nodes and link-name with 24.", "artifacts": [ "evidence/discoverability.json", "evidence/discoverability-rendered.png", "evidence/discoverability-crawler.png", "evidence/lighthouse.json" ], "suggestedFix": "Server-render or statically emit primary feed content and real href links, then hydrate enhancements; keep link text descriptive.", "effort": "large", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "be-discoverable", "principleCheckId": "crawlable-and-mobile-friendly", "guidanceId": "html", "guidanceCategory": "html" }, { "id": "F22", "severity": "medium", "confidence": "high", "summary": "Canonical and sitemap signals are incomplete.", "evidence": "The homepage and representative templates expose no canonical link; /sitemap.xml redirects to the homepage rather than returning a sitemap, while robots.txt otherwise allows public sections.", "artifacts": [ "evidence/home-quality-probe.json", "evidence/robots-sitemap.txt" ], "suggestedFix": "Publish canonical URLs per template and a valid sitemap index/URL set consistent with robots policy.", "effort": "medium", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "be-discoverable", "principleCheckId": "canonical-and-indexing-signals", "guidanceId": "html", "guidanceCategory": "html" }, { "id": "F23", "severity": "low", "confidence": "medium", "summary": "Rich community entities lack structured data.", "evidence": "The homepage has Open Graph metadata but zero JSON-LD blocks; game/app and market templates expose rich entities that could be described without changing visible content.", "artifacts": [ "evidence/home-quality-probe.json", "evidence/app730-probe.json" ], "suggestedFix": "Add accurate schema.org JSON-LD for organization, game/software application, discussions, and market entities where applicable, matching visible content.", "effort": "medium", "pathId": "apphub", "url": "https://steamcommunity.com/app/730", "principleId": "be-discoverable", "principleCheckId": "structured-and-shareable-metadata", "guidanceId": "html", "guidanceCategory": "html" }, { "id": "F24", "severity": "high", "confidence": "high", "summary": "Security headers and cookie attributes are below a safe baseline.", "evidence": "The page is HTTPS, but the headers probe found no CSP, HSTS, nosniff, frame protection, Referrer-Policy, or Permissions-Policy. The timezoneOffset cookie is not Secure, and sessionid is not HttpOnly; all three cookies report SameSite=None.", "artifacts": [ "evidence/headers.json", "evidence/cookies.json" ], "suggestedFix": "Deploy a restrictive CSP, HSTS, nosniff and framing/referrer/permissions policies; harden cookie Secure, HttpOnly, and SameSite attributes according to cross-site requirements.", "effort": "large", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "be-private-and-secure", "principleCheckId": "secure-transport-and-headers", "guidanceId": "security", "guidanceCategory": "security" }, { "id": "F25", "severity": "medium", "confidence": "high", "summary": "Authentication is password/QR-only and omits passkeys and autofill tokens.", "evidence": "The login probe found no WebAuthn/passkey usage. Username/password fields have labels but empty autocomplete attributes. No permission prompt fired on load.", "artifacts": [ "evidence/login-probe.json", "evidence/login-desktop.png" ], "suggestedFix": "Offer passkey sign-in/registration with password fallback and add username/current-password autocomplete tokens.", "effort": "large", "pathId": "login", "url": "https://steamcommunity.com/login/home/?goto=", "principleId": "be-private-and-secure", "principleCheckId": "in-context-permissions-and-modern-auth", "guidanceId": "passkeys", "guidanceCategory": "passkeys" }, { "id": "F26", "severity": "high", "confidence": "high", "summary": "Browser-enforced defenses are absent.", "evidence": "The main response lacks HSTS, clickjacking protection, Referrer-Policy, Permissions-Policy, and CSP; no frame-ancestors policy is available as a fallback.", "artifacts": [ "evidence/headers.json" ], "suggestedFix": "Add HSTS, CSP frame-ancestors, a strict Referrer-Policy, least-privilege Permissions-Policy, and evaluate Trusted Types/origin isolation for sensitive surfaces.", "effort": "large", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "be-private-and-secure", "principleCheckId": "defensive-browser-policies", "guidanceId": "security", "guidanceCategory": "security" }, { "id": "F27", "severity": "high", "confidence": "high", "summary": "Primary feed content depends heavily on JavaScript.", "evidence": "Raw HTML includes only 10% of rendered content words. The crawler screenshot contains far less community content than the browser view, though the page is not an empty shell.", "artifacts": [ "evidence/discoverability.json", "evidence/discoverability-rendered.png", "evidence/discoverability-crawler.png" ], "suggestedFix": "Render primary listings and navigation server-side as semantic HTML, then progressively enhance filters and live updates.", "effort": "large", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "be-resilient", "principleCheckId": "progressive-enhancement", "guidanceId": "stabilize-reactive-state", "guidanceCategory": "user-experience" }, { "id": "F28", "severity": "medium", "confidence": "medium", "summary": "The app-like community surface has no install/offline foundation.", "evidence": "The homepage probe found no web app manifest, and recon exposed no service-worker-backed offline fallback.", "artifacts": [ "evidence/home-quality-probe.json", "evidence/home-recon.json" ], "suggestedFix": "For this long-lived app-like surface, add a manifest and a small service worker that provides an honest offline shell/fallback without caching sensitive data.", "effort": "large", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "be-resilient", "principleCheckId": "offline-and-installable", "guidanceId": "conditional-async-dependencies", "guidanceCategory": "performance" }, { "id": "F29", "severity": "medium", "confidence": "high", "summary": "HTTP failure handling is misleading.", "evidence": "A nonexistent route silently redirected to the normal homepage with no error, retry, explanation, or correct visible state.", "artifacts": [ "evidence/not-found-probe.json", "evidence/not-found.png" ], "suggestedFix": "Preserve failure context, return the correct status, and offer explicit recovery actions instead of presenting a normal-success shell.", "effort": "small", "pathId": "not-found", "url": "https://steamcommunity.com/this-route-does-not-exist-web-uplift", "principleId": "be-resilient", "principleCheckId": "network-and-http-failure-states", "guidanceId": "persistent-toast-notifications", "guidanceCategory": "user-experience" }, { "id": "F30", "severity": "medium", "confidence": "high", "summary": "Empty sign-in submission gives no visible or announced error.", "evidence": "After submitting the empty login form, focus moved to the username input but no role=alert or visible error message was present.", "artifacts": [ "evidence/login-empty-submit.json", "evidence/login-probe.json" ], "suggestedFix": "Validate after submission, show concise field-level feedback, set aria-invalid, and announce an error summary through a live region.", "effort": "small", "pathId": "login", "url": "https://steamcommunity.com/login/home/?goto=", "principleId": "be-trustworthy", "principleCheckId": "humane-error-handling", "guidanceId": "accessible-error-announcement", "guidanceCategory": "accessibility" }, { "id": "F31", "severity": "medium", "confidence": "high", "summary": "Sign-in fields do not advertise browser autofill semantics.", "evidence": "The username and password inputs have empty autocomplete values despite representing established sign-in concepts.", "artifacts": [ "evidence/login-probe.json" ], "suggestedFix": "Set autocomplete=username and autocomplete=current-password, retaining labels and password-manager compatibility.", "effort": "trivial", "pathId": "login", "url": "https://steamcommunity.com/login/home/?goto=", "principleId": "be-trustworthy", "principleCheckId": "trustworthy-input-assistance", "guidanceId": "autofill-sign-in-form", "guidanceCategory": "forms" }, { "id": "F32", "severity": "high", "confidence": "high", "summary": "The feed transfers an excessive and poorly optimized image payload.", "evidence": "HAR attributes 4.57MB of 5.88MB to 66 images; the image probe found 84 non-lazy below-fold images, 35 legacy-format images, 21 missing responsive sources, and a 1.07MB top image.", "artifacts": [ "evidence/home-summary.json", "evidence/images.json" ], "suggestedFix": "Lazy-load below-fold media, negotiate AVIF/WebP, size responses to display needs, add responsive sources, and reserve intrinsic dimensions.", "effort": "large", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "be-sustainable", "principleCheckId": "optimised-assets", "guidanceId": "deliver-optimized-decorative-images", "guidanceCategory": "user-experience" }, { "id": "F33", "severity": "medium", "confidence": "high", "summary": "Media/CDN delivery dominates initial resource use.", "evidence": "111 of 115 requests and 5.81MB are classified as third-party origins (mostly Steam CDNs/user content), with user images dominating bytes; these are operational CDNs rather than known trackers but still consume the initial budget.", "artifacts": [ "evidence/home-summary.json", "evidence/trackers.json" ], "suggestedFix": "Apply a first-viewport media budget, defer offscreen user content, and avoid fetching YouTube thumbnails/media until relevant.", "effort": "medium", "pathId": "home", "url": "https://steamcommunity.com/", "principleId": "be-sustainable", "principleCheckId": "third-party-and-media-budget", "guidanceId": "deprioritize-background-fetches", "guidanceCategory": "performance" } ], "taskList": [ { "id": "T01", "title": "Server-render primary feed/listing content and restore real crawler links", "priority": 1, "findingIds": [ "F21", "F27" ], "guidanceId": "stabilize-reactive-state", "status": "open" }, { "id": "T02", "title": "Cut the LCP/network path and initial image payload", "priority": 2, "findingIds": [ "F10", "F12", "F13", "F32", "F33" ], "guidanceId": "optimize-image-priority", "status": "open" }, { "id": "T03", "title": "Reserve media space and eliminate CLS", "priority": 3, "findingIds": [ "F11", "F18" ], "guidanceId": "visually-stable-font-fallbacks", "status": "open" }, { "id": "T04", "title": "Add accessible names, labels, headings and contrast", "priority": 4, "findingIds": [ "F14", "F15", "F16" ], "guidanceId": "accessibility", "status": "open" }, { "id": "T05", "title": "Deploy security headers and harden cookies", "priority": 5, "findingIds": [ "F24", "F26" ], "guidanceId": "security", "status": "open" }, { "id": "T06", "title": "Increase mobile touch targets and add component responsiveness", "priority": 6, "findingIds": [ "F07", "F08" ], "guidanceId": "size-aware-styling", "status": "open" }, { "id": "T07", "title": "Improve authentication with passkeys, autofill and announced errors", "priority": 7, "findingIds": [ "F25", "F30", "F31" ], "guidanceId": "passkeys", "status": "open" }, { "id": "T08", "title": "Return honest 404/network failure states", "priority": 8, "findingIds": [ "F09", "F29" ], "guidanceId": "persistent-toast-notifications", "status": "open" }, { "id": "T09", "title": "Complete descriptions, canonicals, sitemap and entity metadata", "priority": 9, "findingIds": [ "F20", "F22", "F23" ], "guidanceId": "html", "status": "open" }, { "id": "T10", "title": "Reduce and semanticize the consent interruption", "priority": 10, "findingIds": [ "F05", "F06" ], "guidanceId": "declarative-dialog-popover-control", "status": "open" }, { "id": "T11", "title": "Remove console/deprecation errors and legacy unload behavior", "priority": 11, "findingIds": [ "F17", "F19" ], "guidanceId": "html", "status": "open" }, { "id": "T12", "title": "Add preference-aware theming and navigation continuity", "priority": 12, "findingIds": [ "F01", "F02", "F03", "F04" ], "guidanceId": "dark-mode", "status": "open" }, { "id": "T13", "title": "Add a proportionate offline/installable fallback", "priority": 13, "findingIds": [ "F28" ], "guidanceId": "conditional-async-dependencies", "status": "open" } ], "budget": { "pathCount": 8, "auditPasses": 1 }, "agent": "pi", "runId": "2026-07-19T19-40-57-048Z" }