{ "url": "https://www.scribd.com", "auditedAt": "2026-07-19T01:52:01.764Z", "mode": "report", "status": "completed", "statusDetail": "Coverage-complete audit of seven representative public/unauthenticated paths. Logged-in reading, payment, cancellation, and account-management states were not entered because no test account or payment authorization was supplied; checks were judged only against exposed public surfaces.", "page": { "appType": "hybrid", "framework": "Next.js landing pages plus server-rendered legacy/document surfaces", "notes": "Public document marketplace and reader. Representative coverage includes landing, listing, document, upload, signup, 404 recovery, and an advertised locale target." }, "evidenceUsed": [ "screenshot", "transition-video", "layout-metrics", "dom", "evaluate-probe", "trace", "har", "discoverability", "headers", "cookies", "trackers", "images", "secrets", "heap-summary", "axe-core", "Lighthouse", "Modern Web Guidance 0.0.172" ], "guidanceConsulted": [ "accessibility", "accessible-error-announcement", "language-detection", "language-model", "summarizer", "translator", "css", "highlight-text-ranges", "css-layout", "animated-select-picker", "autofill-address-form", "autofill-highlight-inputs", "autofill-payment-form", "autofill-sign-in-form", "autofill-sign-up-form", "brand-consistent-forms", "branded-select-styling", "custom-select-picker-layouts", "form-fields-automatically-fit-contents", "forms", "required-field-feedback", "rich-media-picker", "select-menu-interaction", "validate-input-after-interaction", "html", "passkey-authentication", "passkey-conditional-create", "passkey-management", "passkey-reauthentication", "passkey-registration", "passkeys", "batch-analytics-events", "break-up-long-tasks", "calculate-total-foreground-time", "conditional-async-dependencies", "defer-rendering-heavy-content", "defer-work-until-scroll-ends", "deprioritize-background-fetches", "detect-initial-visibility-state", "efficient-background-processing", "faster-spa-view-transitions", "full-session-analytics", "identify-heavy-scripts", "identify-inp-causes", "improve-next-page-load-performance", "interactions-in-complex-layouts", "optimize-image-priority", "optimize-preload-priority", "optimize-script-priority", "performance", "resolution-optimized-pseudo-elements", "schedule-tasks-by-priority", "sequence-distributed-events", "privacy", "security", "adapt-scrollbar-to-contrast-preferences", "anchor-positioning-tab-underline", "animate-element-entry-exit", "animate-to-from-top-layer", "animate-to-intrinsic-sizes", "apply-webgl-shaders", "calculate-event-differentials", "calculate-with-intrinsic-sizes", "capture-location-agnostic-data", "carousel-slide-effects", "carousel-snap-highlights", "child-state-based-styling", "complex-shapes", "component-specific-light-dark-theme", "consistent-cross-document-transitions", "content-based-styling", "coordinate-global-events", "cross-document-transitions", "customize-scrollbar-color-and-thickness", "dark-mode", "declarative-button-actions", "declarative-dialog-popover-control", "deliver-optimized-decorative-images", "design-token-reactivity", "directional-navigation-transitions", "dynamic-sibling-animations", "dynamic-sibling-styling", "export-html-media-from-canvas", "expose-canvas-content-to-browser-features", "flicker-free-client-side-ab-testing", "fluid-scaling", "format-human-readable-durations", "group-element-transitions", "improve-text-layout-and-legibility", "individual-transform-properties", "interactive-content-in-3d-scenes", "interactive-content-reveal", "interest-triggered-action-previews", "interest-triggered-tooltips", "light-dismiss-a-dialog", "manage-recurring-intervals", "model-partial-time-concepts", "move-dom-element-without-losing-state", "navigation-drawer", "overflow-clipping-control", "parallax-scroll-effects", "persistent-app-tours", "persistent-toast-notifications", "persistent-top-layer-ui", "physics-based-easing", "platform-controls-dismiss-dialog", "position-aware-tooltips", "precise-text-alignment", "prevent-text-wrapping", "pull-to-reveal", "reduce-style-repetition", "resilient-context-menus-and-nested-dropdowns", "same-document-transitions", "scroll-entry-exit-effects", "scroll-position-aware-elements", "scroll-progress-indicator", "scroll-snap-realtime-feedback", "scroll-snap-state-sync", "scroll-target-on-load", "scrollability-affordance-hints", "scrollytelling", "search-hidden-content", "shaped-cutouts", "shrinking-header-on-scroll", "size-aware-styling", "soft-edge-content-fade", "stabilize-reactive-state", "stack-drill-down", "style-parent-with-has", "support-global-calendar-systems", "swipe-to-remove", "visually-stable-font-fallbacks", "visually-stable-mixed-fonts", "visually-texture-content", "agentic-forms", "agentic-javascript-tools", "webmcp" ], "artifacts": [ { "type": "other", "path": "evidence/404-probe.json", "caption": "404 probe json", "findingIds": [] }, { "type": "other", "path": "evidence/agent-i18n-probe.json", "caption": "agent i18n probe json", "findingIds": [ "F18" ] }, { "type": "other", "path": "evidence/axe-home.json", "caption": "axe home json", "findingIds": [] }, { "type": "screenshot", "path": "evidence/category-mobile.png", "caption": "category mobile png", "condition": "viewport: 360x800", "findingIds": [ "F01", "F15" ] }, { "type": "other", "path": "evidence/category-recon.json", "caption": "category recon json", "findingIds": [] }, { "type": "other", "path": "evidence/cookies.json", "caption": "cookies json", "findingIds": [ "F11" ] }, { "type": "other", "path": "evidence/dark-probe.json", "caption": "dark probe json", "findingIds": [ "F02" ] }, { "type": "screenshot", "path": "evidence/discoverability-crawler.png", "caption": "discoverability crawler png", "findingIds": [] }, { "type": "screenshot", "path": "evidence/discoverability-rendered.png", "caption": "discoverability rendered png", "findingIds": [] }, { "type": "discoverability", "path": "evidence/discoverability.json", "caption": "discoverability json", "findingIds": [ "F18" ] }, { "type": "screenshot", "path": "evidence/document-desktop.png", "caption": "document desktop png", "findingIds": [] }, { "type": "layout", "path": "evidence/document-layout-mobile.json", "caption": "document layout mobile json", "condition": "viewport: 360x800", "findingIds": [] }, { "type": "other", "path": "evidence/guidance-list.json", "caption": "guidance list json", "findingIds": [] }, { "type": "other", "path": "evidence/guidance-retrieved.md", "caption": "guidance retrieved md", "findingIds": [] }, { "type": "other", "path": "evidence/guidance-searches.json", "caption": "guidance searches json", "findingIds": [] }, { "type": "other", "path": "evidence/headers.json", "caption": "headers json", "findingIds": [ "F11" ] }, { "type": "heap", "path": "evidence/heap-baseline.json", "caption": "heap baseline json", "findingIds": [ "F19" ] }, { "type": "heap", "path": "evidence/heap-post.json", "caption": "heap post json", "condition": "after 10 reader scroll cycles", "findingIds": [ "F19" ] }, { "type": "screenshot", "path": "evidence/home-dark.png", "caption": "home dark png", "condition": "prefers-color-scheme: dark", "findingIds": [ "F02" ] }, { "type": "screenshot", "path": "evidence/home-desktop.png", "caption": "home desktop png", "findingIds": [ "F01", "F12", "F15" ] }, { "type": "dom", "path": "evidence/home-dom.json", "caption": "home dom json", "findingIds": [] }, { "type": "screenshot", "path": "evidence/home-high-contrast.png", "caption": "home high contrast png", "condition": "prefers-contrast: more; forced-colors: active", "findingIds": [] }, { "type": "layout", "path": "evidence/home-layout-mobile.json", "caption": "home layout mobile json", "condition": "viewport: 360x800", "findingIds": [ "F04" ] }, { "type": "har-summary", "path": "evidence/home-summary.json", "caption": "home summary json", "findingIds": [ "F07", "F08", "F12", "F17" ] }, { "type": "screenshot", "path": "evidence/home-to-category-contact.png", "caption": "home to category contact png", "findingIds": [ "F03" ] }, { "type": "video", "path": "evidence/home-to-category.mp4", "caption": "home to category mp4", "findingIds": [ "F03" ] }, { "type": "trace-summary", "path": "evidence/home-trace-summary.json", "caption": "home trace summary json", "findingIds": [ "F06", "F20" ] }, { "type": "trace", "path": "evidence/home-trace.json", "caption": "home trace json", "findingIds": [ "F06" ] }, { "type": "har", "path": "evidence/home.har", "caption": "home har", "findingIds": [ "F07", "F12" ] }, { "type": "other", "path": "evidence/images.json", "caption": "images json", "findingIds": [ "F16" ] }, { "type": "lighthouse", "path": "evidence/lighthouse-home.json", "caption": "lighthouse home json", "findingIds": [ "F06", "F08", "F09", "F10", "F20" ] }, { "type": "other", "path": "evidence/motion-probe.json", "caption": "motion probe json", "condition": "prefers-reduced-motion: reduce", "findingIds": [ "F03" ] }, { "type": "other", "path": "evidence/overlay-probe.json", "caption": "overlay probe json", "findingIds": [] }, { "type": "other", "path": "evidence/platform-seo-probe.json", "caption": "platform seo probe json", "findingIds": [ "F14" ] }, { "type": "other", "path": "evidence/recon.json", "caption": "recon json", "findingIds": [ "F10" ] }, { "type": "dom", "path": "evidence/resource-dom-probe.json", "caption": "resource dom probe json", "findingIds": [ "F07" ] }, { "type": "other", "path": "evidence/robots-sitemap.json", "caption": "robots sitemap json", "findingIds": [ "F18" ] }, { "type": "other", "path": "evidence/secrets.json", "caption": "secrets json", "findingIds": [] }, { "type": "other", "path": "evidence/signup-detail.json", "caption": "signup detail json", "findingIds": [ "F13" ] }, { "type": "screenshot", "path": "evidence/signup-invalid-mobile.png", "caption": "signup invalid mobile png", "condition": "viewport: 360x800; empty submit", "findingIds": [ "F13" ] }, { "type": "other", "path": "evidence/signup-probe.json", "caption": "signup probe json", "findingIds": [ "F13" ] }, { "type": "other", "path": "evidence/signup-validation.json", "caption": "signup validation json", "findingIds": [] }, { "type": "other", "path": "evidence/spanish-locale.json", "caption": "spanish locale json", "findingIds": [ "F14" ] }, { "type": "other", "path": "evidence/trackers.json", "caption": "trackers json", "findingIds": [ "F12", "F17" ] }, { "type": "other", "path": "evidence/ui-probe.json", "caption": "ui probe json", "findingIds": [ "F04", "F05" ] }, { "type": "screenshot", "path": "evidence/upload-desktop.png", "caption": "upload desktop png", "findingIds": [ "F01" ] } ], "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": "dark-mode screenshot and computed-style probe", "evidence": "Dark preference matched but root color-scheme remained normal and the primary dialog stayed light.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dark.png", "evidence/dark-probe.json" ], "findingIds": [ "F02" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-reduced-motion", "status": "pass", "confidence": "high", "method": "evaluate under prefers-reduced-motion: reduce", "evidence": "The emulated preference matched and document.getAnimations() returned no active animations.", "pathIds": [ "home" ], "artifacts": [ "evidence/motion-probe.json" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-contrast", "status": "pass", "confidence": "high", "method": "forced-colors and prefers-contrast screenshot", "evidence": "Text, links, form controls, and focus outlines remained visible in the forced-colors/high-contrast capture.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-high-contrast.png" ] }, { "principleId": "implement-natural-interactions", "checkId": "view-transitions", "status": "issues", "confidence": "medium", "method": "cross-document transition video and CSS/runtime probe", "evidence": "The route capture shows a direct swap and no authored view-transition rule was detected.", "pathIds": [ "home", "category" ], "artifacts": [ "evidence/home-to-category.mp4", "evidence/home-to-category-contact.png", "evidence/motion-probe.json" ], "findingIds": [ "F03" ] }, { "principleId": "implement-natural-interactions", "checkId": "scroll-driven-animations", "status": "pass", "confidence": "medium", "method": "CSS and runtime animation probe", "evidence": "No scroll-linked decorative effect or main-thread scroll animation was present; ordinary page/document scrolling remained native.", "pathIds": [ "home", "document" ], "artifacts": [ "evidence/motion-probe.json", "evidence/document-desktop.png" ] }, { "principleId": "implement-natural-interactions", "checkId": "physical-gestures", "status": "pass", "confidence": "medium", "method": "mobile layout and document-reader visual inspection", "evidence": "The covered surfaces use native scrolling and platform controls; no custom pointer-driven gesture that fights scrolling was observed.", "pathIds": [ "category", "document" ], "artifacts": [ "evidence/category-mobile.png", "evidence/document-layout-mobile.json" ] }, { "principleId": "provide-guided-navigation", "checkId": "scroll-state-aware-chrome", "status": "pass", "confidence": "medium", "method": "reader and mobile visual inspection", "evidence": "Persistent header/search and the reader toolbar/page controls keep navigation context visible across long surfaces.", "pathIds": [ "home", "document" ], "artifacts": [ "evidence/document-desktop.png", "evidence/home-layout-mobile.json" ] }, { "principleId": "provide-guided-navigation", "checkId": "anchored-positioning", "status": "not-applicable", "confidence": "medium", "method": "overlay inventory and positioning probe", "evidence": "No tooltip, edge menu, or transient popover requiring anchor positioning was exposed in the covered unauthenticated states; the only open overlay was the viewport-fixed consent modal.", "pathIds": [ "home" ], "artifacts": [ "evidence/overlay-probe.json" ], "reason": "No tooltip, edge menu, or transient popover requiring anchor positioning was exposed in the covered unauthenticated states; the only open overlay was the viewport-fixed consent modal." }, { "principleId": "provide-guided-navigation", "checkId": "directs-attention", "status": "pass", "confidence": "medium", "method": "screenshots of listing, reader and 404 journey", "evidence": "Category headings, reader page controls, and recovery links make location and the next destination apparent.", "pathIds": [ "category", "document", "error404" ], "artifacts": [ "evidence/category-mobile.png", "evidence/document-desktop.png", "evidence/404-probe.json" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "no-intrusive-interruptions", "status": "issues", "confidence": "high", "method": "first-load screenshots at desktop and mobile", "evidence": "The consent dialog obscures most or all first-load content.", "pathIds": [ "home", "category", "upload" ], "artifacts": [ "evidence/home-desktop.png", "evidence/category-mobile.png", "evidence/upload-desktop.png" ], "findingIds": [ "F01" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "semantic-dismissible-primitives", "status": "pass", "confidence": "high", "method": "dialog DOM semantics and keyboard probe", "evidence": "The consent overlay is labelled role=dialog/aria-modal and exposes close, save, accept, and reject controls with visible focus.", "pathIds": [ "home" ], "artifacts": [ "evidence/ui-probe.json" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "reduced-chrome", "status": "pass", "confidence": "medium", "method": "desktop screenshots after consent dismissal", "evidence": "The document reader gives the majority of its central viewport to the document; chrome remains compact and task-related.", "pathIds": [ "document", "upload" ], "artifacts": [ "evidence/document-desktop.png", "evidence/upload-desktop.png" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "responsive-no-horizontal-scroll", "status": "pass", "confidence": "high", "method": "layout metrics at 360x800 on landing and document templates", "evidence": "Both mobile captures reported scrollWidth=clientWidth=360 with 0px horizontal overflow and a viewport meta tag.", "pathIds": [ "home", "document" ], "artifacts": [ "evidence/home-layout-mobile.json", "evidence/document-layout-mobile.json" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "component-level-responsiveness", "status": "issues", "confidence": "medium", "method": "CSS rule inventory and mobile layout", "evidence": "No container query rules were detected although viewport reflow works.", "pathIds": [ "home" ], "artifacts": [ "evidence/ui-probe.json", "evidence/home-layout-mobile.json" ], "findingIds": [ "F04" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "input-modality-aware", "status": "issues", "confidence": "high", "method": "programmatic focus and target-size probe", "evidence": "Several actions computed outline-style none and some targets were below 44×44 CSS pixels.", "pathIds": [ "home" ], "artifacts": [ "evidence/ui-probe.json" ], "findingIds": [ "F05" ] }, { "principleId": "support-core-task-success", "checkId": "clear-purpose-and-primary-action", "status": "pass", "confidence": "high", "method": "first-viewport screenshots across home, document, upload and signup", "evidence": "Headings and primary controls clearly identify explore/search, read/download, contribute/upload, and create-account purposes.", "pathIds": [ "home", "document", "upload", "signup" ], "artifacts": [ "evidence/document-desktop.png", "evidence/upload-desktop.png", "evidence/signup-invalid-mobile.png" ] }, { "principleId": "support-core-task-success", "checkId": "primary-flow-completion", "status": "pass", "confidence": "medium", "method": "public discovery-to-reader walkthrough and signup form inspection", "evidence": "A category exposes real document hrefs and the selected public document opens in the reader; signup exposes labelled email/password and federated paths. Account-only purchase/download completion was outside the unauthenticated public scope.", "pathIds": [ "category", "document", "signup" ], "artifacts": [ "evidence/category-recon.json", "evidence/document-desktop.png", "evidence/signup-detail.json" ] }, { "principleId": "support-core-task-success", "checkId": "clear-system-state-and-recovery", "status": "pass", "confidence": "high", "method": "invalid-form and deliberate 404 probes", "evidence": "Native form validity returns actionable messages, polite/assertive live regions exist, and the 404 names the error and links back home/content.", "pathIds": [ "signup", "error404" ], "artifacts": [ "evidence/signup-validation.json", "evidence/404-probe.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "good-core-web-vitals", "status": "issues", "confidence": "high", "method": "Lighthouse and trace metrics", "evidence": "Lighthouse LCP was 18.6s and TBT 650ms; the separate trace LCP was 1.90s with 76ms TBT, indicating variable but unacceptable cold-load evidence.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-trace-summary.json" ], "findingIds": [ "F06" ] }, { "principleId": "be-fast-and-stable", "checkId": "visual-stability", "status": "pass", "confidence": "high", "method": "mobile CLS observers on landing and document templates", "evidence": "Observed CLS was 0 on home and 0.0011 on the document, with image dimensions present.", "pathIds": [ "home", "document" ], "artifacts": [ "evidence/home-layout-mobile.json", "evidence/document-layout-mobile.json", "evidence/images.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-main-thread", "status": "issues", "confidence": "high", "method": "Lighthouse and trace long-task analysis", "evidence": "Lighthouse TBT was 650ms; the separate trace recorded one 126ms long task.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-trace-summary.json" ], "findingIds": [ "F20" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-resource-delivery", "status": "issues", "confidence": "high", "method": "HAR summary confirmed against script DOM attributes", "evidence": "The page transferred 2.85MB, including 2.13MB script; HTML was uncompressed and one head script was synchronous.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json", "evidence/resource-dom-probe.json" ], "findingIds": [ "F07" ] }, { "principleId": "be-fast-and-stable", "checkId": "trim-unused-and-duplicate-code", "status": "issues", "confidence": "high", "method": "Lighthouse code-coverage diagnostics", "evidence": "Lighthouse estimated 905KiB unused JavaScript and 28KiB unused CSS.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-home.json" ], "findingIds": [ "F08" ] }, { "principleId": "be-inclusive", "checkId": "names-roles-labels", "status": "issues", "confidence": "high", "method": "Lighthouse accessibility audit and axe corroboration", "evidence": "Lighthouse found category card label/content mismatches; axe found no additional violations.", "pathIds": [ "home", "category" ], "artifacts": [ "evidence/lighthouse-home.json", "evidence/axe-home.json" ], "findingIds": [ "F09" ] }, { "principleId": "be-inclusive", "checkId": "sufficient-contrast", "status": "pass", "confidence": "high", "method": "axe and Lighthouse accessibility plus forced-colors screenshot", "evidence": "axe found no violations, Lighthouse scored accessibility 1.0, and essential UI remained visible in forced colors.", "pathIds": [ "home" ], "artifacts": [ "evidence/axe-home.json", "evidence/lighthouse-home.json", "evidence/home-high-contrast.png" ] }, { "principleId": "be-inclusive", "checkId": "structure-and-focus", "status": "issues", "confidence": "high", "method": "Lighthouse semantics and keyboard computed-style probe", "evidence": "Category accessible-name mismatches and multiple controls with outline-style none prevent a fully reliable focus/name experience.", "pathIds": [ "home", "category" ], "artifacts": [ "evidence/lighthouse-home.json", "evidence/ui-probe.json" ], "findingIds": [ "F05", "F09" ] }, { "principleId": "be-inclusive", "checkId": "legible-text", "status": "pass", "confidence": "high", "method": "desktop/mobile screenshot review", "evidence": "Body and heading copy uses readable sizing, spacing and wrapping without clipping across covered screenshots.", "pathIds": [ "home", "category", "document", "signup" ], "artifacts": [ "evidence/category-mobile.png", "evidence/document-desktop.png", "evidence/signup-invalid-mobile.png" ] }, { "principleId": "be-inclusive", "checkId": "zoom-reflow-targets-and-media", "status": "issues", "confidence": "high", "method": "360px reflow metrics and target-size measurement", "evidence": "Reflow succeeds without overflow, but the menu control is 24×40px and consent checkbox boxes are 16×16px. No required media-caption case was present.", "pathIds": [ "home", "category" ], "artifacts": [ "evidence/ui-probe.json", "evidence/category-mobile.png" ], "findingIds": [ "F05" ] }, { "principleId": "follow-best-practices", "checkId": "no-console-errors", "status": "pass", "confidence": "high", "method": "Lighthouse errors-in-console audit", "evidence": "Lighthouse errors-in-console scored 1 with no recorded items.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-home.json" ] }, { "principleId": "follow-best-practices", "checkId": "sound-document-and-assets", "status": "pass", "confidence": "high", "method": "doctype/meta/image and Lighthouse probes", "evidence": "The page uses HTML doctype, UTF-8, correctly proportioned/dimensioned modern-format images, and Lighthouse aspect-ratio audits passed.", "pathIds": [ "home" ], "artifacts": [ "evidence/platform-seo-probe.json", "evidence/images.json", "evidence/lighthouse-home.json" ] }, { "principleId": "follow-best-practices", "checkId": "browser-platform-hygiene", "status": "pass", "confidence": "high", "method": "Lighthouse platform audits", "evidence": "Deprecation, BFCache, geolocation/notification-on-load, paste prevention, and source-map audits all scored as passing; security findings are recorded under the dedicated security principle.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-home.json" ] }, { "principleId": "be-discoverable", "checkId": "title-and-description", "status": "pass", "confidence": "high", "method": "DOM metadata probe", "evidence": "The homepage has a descriptive title and meta description.", "pathIds": [ "home" ], "artifacts": [ "evidence/platform-seo-probe.json" ] }, { "principleId": "be-discoverable", "checkId": "crawlable-and-mobile-friendly", "status": "issues", "confidence": "high", "method": "Lighthouse SEO and DOM link inventory", "evidence": "Links are crawlable and viewport metadata is present, but Lighthouse found two generic Learn more links.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-home.json", "evidence/recon.json" ], "findingIds": [ "F10" ] }, { "principleId": "be-discoverable", "checkId": "canonical-and-indexing-signals", "status": "pass", "confidence": "high", "method": "canonical/hreflang/robots/sitemap probe", "evidence": "The public page returns 200, declares a canonical, exposes hreflang links, and robots.txt points to locale-specific sitemap indexes without blocking ordinary indexing.", "pathIds": [ "home" ], "artifacts": [ "evidence/platform-seo-probe.json", "evidence/robots-sitemap.json" ] }, { "principleId": "be-discoverable", "checkId": "structured-and-shareable-metadata", "status": "pass", "confidence": "high", "method": "JSON-LD and Open Graph probe", "evidence": "The homepage exposes WebSite SearchAction and Organization JSON-LD plus matching og:title, og:description, and og:site_name.", "pathIds": [ "home" ], "artifacts": [ "evidence/platform-seo-probe.json" ] }, { "principleId": "be-private-and-secure", "checkId": "secure-transport-and-headers", "status": "issues", "confidence": "high", "method": "headers, cookies and secrets primitives", "evidence": "HTTPS/HSTS and no exposed secrets pass, but CSP, nosniff and cookie hardening are incomplete.", "pathIds": [ "home" ], "artifacts": [ "evidence/headers.json", "evidence/cookies.json", "evidence/secrets.json" ], "findingIds": [ "F11" ] }, { "principleId": "be-private-and-secure", "checkId": "data-minimisation-and-third-parties", "status": "issues", "confidence": "high", "method": "HAR and tracker-origin inventory", "evidence": "69/72 requests and 2.46MB were non-www origins; five known trackers were active.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json", "evidence/trackers.json" ], "findingIds": [ "F12" ] }, { "principleId": "be-private-and-secure", "checkId": "in-context-permissions-and-modern-auth", "status": "issues", "confidence": "medium", "method": "signup auth-method inspection", "evidence": "No permission prompt occurred on load, but signup offered no passkey/WebAuthn path.", "pathIds": [ "signup" ], "artifacts": [ "evidence/signup-detail.json" ], "findingIds": [ "F13" ] }, { "principleId": "be-private-and-secure", "checkId": "defensive-browser-policies", "status": "issues", "confidence": "high", "method": "security header and cookie primitives", "evidence": "HSTS is present, but CSP/frame protection, nosniff, Referrer-Policy, Permissions-Policy, and narrow cookie posture are incomplete.", "pathIds": [ "home" ], "artifacts": [ "evidence/headers.json", "evidence/cookies.json" ], "findingIds": [ "F11" ] }, { "principleId": "be-resilient", "checkId": "progressive-enhancement", "status": "pass", "confidence": "high", "method": "raw HTML vs rendered discoverability comparison", "evidence": "Raw HTML returned 200 with 100% rendered-content word coverage, the H1 and description present, and no empty JS shell.", "pathIds": [ "home" ], "artifacts": [ "evidence/discoverability.json", "evidence/discoverability-crawler.png", "evidence/discoverability-rendered.png" ] }, { "principleId": "be-resilient", "checkId": "resilient-runtime-behaviour", "status": "pass", "confidence": "medium", "method": "mobile layouts, consent dialog, and 404 exercise", "evidence": "Covered overlays stay within the viewport with scrolling, mobile templates do not overflow, and navigation failures resolve to a recoverable 404.", "pathIds": [ "home", "document", "error404" ], "artifacts": [ "evidence/overlay-probe.json", "evidence/document-layout-mobile.json", "evidence/404-probe.json" ] }, { "principleId": "be-resilient", "checkId": "offline-and-installable", "status": "not-applicable", "confidence": "high", "method": "manifest/service capability and site-purpose judgement", "evidence": "The public website is a server-rendered, network-dependent document marketplace with native apps promoted separately; an offline/installable web-app promise is not part of the covered public experience.", "pathIds": [ "home" ], "artifacts": [ "evidence/platform-seo-probe.json" ], "reason": "The public website is a server-rendered, network-dependent document marketplace with native apps promoted separately; an offline/installable web-app promise is not part of the covered public experience." }, { "principleId": "be-resilient", "checkId": "network-and-http-failure-states", "status": "pass", "confidence": "high", "method": "deliberate unknown-route request", "evidence": "An unknown route produces a clear Page not found state, explanation, home/content recovery links, and no broken shell.", "pathIds": [ "error404" ], "artifacts": [ "evidence/404-probe.json" ] }, { "principleId": "be-internationalised", "checkId": "lang-dir-and-logical-properties", "status": "issues", "confidence": "high", "method": "hreflang and explicit locale navigation probe", "evidence": "The advertised Spanish URL delivered English lang/content at the www URL.", "pathIds": [ "home", "locale-es" ], "artifacts": [ "evidence/platform-seo-probe.json", "evidence/spanish-locale.json" ], "findingIds": [ "F14" ] }, { "principleId": "be-internationalised", "checkId": "locale-aware-data", "status": "issues", "confidence": "medium", "method": "explicit Spanish locale navigation and locale metadata probe", "evidence": "The explicit Spanish target did not preserve the requested locale, so locale-aware delivery could not be established even though hreflang variants are advertised.", "pathIds": [ "locale-es" ], "artifacts": [ "evidence/spanish-locale.json", "evidence/platform-seo-probe.json" ], "findingIds": [ "F14" ] }, { "principleId": "be-internationalised", "checkId": "time-zone-correctness", "status": "not-applicable", "confidence": "high", "method": "covered-content inventory", "evidence": "The covered public landing, listing, document, upload, and signup surfaces expose no events, schedules, or user-facing times for which time-zone or DST handling applies.", "pathIds": [ "home", "category", "document", "upload", "signup" ], "artifacts": [ "evidence/agent-i18n-probe.json" ], "reason": "The covered public landing, listing, document, upload, and signup surfaces expose no events, schedules, or user-facing times for which time-zone or DST handling applies." }, { "principleId": "be-trustworthy", "checkId": "no-dark-patterns", "status": "issues", "confidence": "high", "method": "first-load consent screenshot", "evidence": "All optional advertising/personalisation purposes are checked by default, though a reject-all action is present.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-desktop.png", "evidence/category-mobile.png" ], "findingIds": [ "F15" ] }, { "principleId": "be-trustworthy", "checkId": "humane-error-handling", "status": "pass", "confidence": "high", "method": "signup reportValidity and live-region probe", "evidence": "Empty required fields produce browser-native messages, with dedicated polite/assertive live regions for email and password feedback.", "pathIds": [ "signup" ], "artifacts": [ "evidence/signup-validation.json" ] }, { "principleId": "be-trustworthy", "checkId": "trustworthy-input-assistance", "status": "pass", "confidence": "high", "method": "signup label/autocomplete inspection", "evidence": "Email and password are labelled, required, and use autocomplete=email/new-password; newsletter consent is optional and unchecked.", "pathIds": [ "signup" ], "artifacts": [ "evidence/signup-detail.json", "evidence/signup-invalid-mobile.png" ] }, { "principleId": "be-trustworthy", "checkId": "safe-commercial-and-account-flows", "status": "pass", "confidence": "medium", "method": "public signup and consent inspection", "evidence": "The public account entry clearly states one subscription for Scribd and Slideshare, offers multiple sign-up methods, and leaves marketing consent off; no sensitive account action was available without authentication.", "pathIds": [ "signup", "home" ], "artifacts": [ "evidence/signup-invalid-mobile.png", "evidence/signup-detail.json" ] }, { "principleId": "be-sustainable", "checkId": "optimised-assets", "status": "issues", "confidence": "high", "method": "image delivery primitive", "evidence": "33/36 images had no srcset and two were oversized, despite modern formats and dimensions.", "pathIds": [ "home" ], "artifacts": [ "evidence/images.json" ], "findingIds": [ "F16" ] }, { "principleId": "be-sustainable", "checkId": "no-wasteful-work", "status": "issues", "confidence": "high", "method": "HAR and Lighthouse unused-code analysis", "evidence": "Initial load fetches large payment, survey, social and duplicate analytics bundles that are not needed for first content.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json", "evidence/lighthouse-home.json" ], "findingIds": [ "F17" ] }, { "principleId": "be-sustainable", "checkId": "third-party-and-media-budget", "status": "issues", "confidence": "high", "method": "HAR byte attribution and tracker inventory", "evidence": "Third-party origins consumed 2.46MB, including 858KB from Google Tag Manager.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json", "evidence/trackers.json" ], "findingIds": [ "F17" ] }, { "principleId": "be-agent-ready", "checkId": "structured-agent-capabilities", "status": "issues", "confidence": "high", "method": "agent feature probe and robots policy", "evidence": "No WebMCP/agentic tools were present and robots explicitly blocks several major AI crawlers.", "pathIds": [ "document" ], "artifacts": [ "evidence/agent-i18n-probe.json", "evidence/robots-sitemap.json" ], "findingIds": [ "F18" ] }, { "principleId": "be-agent-ready", "checkId": "on-device-inference", "status": "not-applicable", "confidence": "high", "method": "feature inventory and emerging-feature applicability judgement", "evidence": "No user-facing summarisation or generative feature is offered in the covered public UI, so built-in on-device inference has no current task to enhance.", "pathIds": [ "document" ], "artifacts": [ "evidence/agent-i18n-probe.json" ], "reason": "No user-facing summarisation or generative feature is offered in the covered public UI, so built-in on-device inference has no current task to enhance." }, { "principleId": "be-memory-efficient", "checkId": "no-leak-under-repeated-interaction", "status": "pass", "confidence": "medium", "method": "baseline and post heap summaries around 10 reader scroll cycles", "evidence": "Heap self-size changed from 58.29MB to 59.11MB (+1.4%) and nodes from 1,058,563 to 1,069,632 (+1.0%); across isolated captures this is small enough not to establish unbounded retained growth.", "pathIds": [ "document" ], "artifacts": [ "evidence/heap-baseline.json", "evidence/heap-post.json" ] }, { "principleId": "be-memory-efficient", "checkId": "bounded-footprint", "status": "issues", "confidence": "medium", "method": "baseline/post heap summaries", "evidence": "The two-page reader baseline had 1.06M heap nodes and 58.3MB self-size; post-scroll remained similarly large.", "pathIds": [ "document" ], "artifacts": [ "evidence/heap-baseline.json", "evidence/heap-post.json" ], "findingIds": [ "F19" ] }, { "principleId": "be-memory-efficient", "checkId": "no-detached-dom-or-unbounded-listeners", "status": "pass", "confidence": "medium", "method": "constructor comparison in heap summaries", "evidence": "Neither summary surfaced Detached* constructors among the largest retained constructor groups, and repeated scrolling did not produce a large population jump; intentional caches and isolated-run noise limit confidence.", "pathIds": [ "document" ], "artifacts": [ "evidence/heap-baseline.json", "evidence/heap-post.json" ] } ], "principleOutcomes": [ { "principleId": "respect-user-preferences", "expectation": "default", "status": "issues", "findingIds": [ "F02" ] }, { "principleId": "implement-natural-interactions", "expectation": "default", "status": "issues", "findingIds": [ "F03" ] }, { "principleId": "provide-guided-navigation", "expectation": "default", "status": "pass" }, { "principleId": "maximize-content-reduce-noise", "expectation": "default", "status": "issues", "findingIds": [ "F01" ] }, { "principleId": "adapt-to-the-form-factor", "expectation": "default", "status": "issues", "findingIds": [ "F04", "F05" ] }, { "principleId": "support-core-task-success", "expectation": "default", "status": "pass" }, { "principleId": "be-fast-and-stable", "expectation": "default", "status": "issues", "findingIds": [ "F06", "F20", "F07", "F08" ] }, { "principleId": "be-inclusive", "expectation": "default", "status": "issues", "findingIds": [ "F09", "F05" ] }, { "principleId": "follow-best-practices", "expectation": "default", "status": "pass" }, { "principleId": "be-discoverable", "expectation": "default", "status": "issues", "findingIds": [ "F10" ] }, { "principleId": "be-private-and-secure", "expectation": "default", "status": "issues", "findingIds": [ "F11", "F12", "F13" ] }, { "principleId": "be-resilient", "expectation": "contextual", "status": "pass" }, { "principleId": "be-internationalised", "expectation": "contextual", "status": "issues", "findingIds": [ "F14" ] }, { "principleId": "be-trustworthy", "expectation": "default", "status": "issues", "findingIds": [ "F15" ] }, { "principleId": "be-sustainable", "expectation": "contextual", "status": "issues", "findingIds": [ "F16", "F17" ] }, { "principleId": "be-agent-ready", "expectation": "contextual", "status": "issues", "findingIds": [ "F18" ] }, { "principleId": "be-memory-efficient", "expectation": "default", "status": "issues", "findingIds": [ "F19" ] } ], "paths": [ { "id": "home", "description": "Public landing page, global navigation, consent, search entry, trial proposition, and site-wide metadata.", "url": "https://www.scribd.com/", "conditions": [ "desktop", "mobile 360x800", "prefers-color-scheme: dark", "prefers-contrast: more", "forced-colors: active", "prefers-reduced-motion: reduce", "keyboard focus", "no JavaScript crawler" ], "result": "issues" }, { "id": "category", "description": "Technology & Engineering listing, representing category/listing templates and document discovery.", "url": "https://www.scribd.com/docs/Technology-Engineering", "conditions": [ "mobile 360x800" ], "result": "issues" }, { "id": "document", "description": "Public document detail/reader, representing Scribd’s primary content-consumption journey.", "url": "https://www.scribd.com/document/443393015/Solvent-Cement-for-Joining-PVC-Pipe-Adhesives-Formulation-28-3-2019", "conditions": [ "desktop", "mobile 360x800", "10 repeated reader scroll cycles", "heap baseline and post-interaction" ], "result": "issues" }, { "id": "upload", "description": "Public document-upload landing surface, representing contribution intent before authentication.", "url": "https://www.scribd.com/upload-document", "conditions": [ "desktop" ], "result": "issues" }, { "id": "signup", "description": "Account creation surface, representing the public authentication/form journey. No account was created and CAPTCHA was not bypassed.", "url": "https://www.scribd.com/oauth/signup", "conditions": [ "mobile 360x800", "empty-form submission" ], "result": "pass" }, { "id": "error404", "description": "Deliberately invalid URL, representing HTTP/navigation recovery.", "url": "https://www.scribd.com/this-route-should-not-exist-web-uplift", "conditions": [ "desktop" ], "result": "pass" }, { "id": "locale-es", "description": "Spanish hreflang target, representing locale routing and translated delivery.", "url": "https://es.scribd.com/", "conditions": [ "fresh browser profile" ], "result": "issues" } ], "findings": [ { "id": "F01", "severity": "high", "confidence": "high", "pathId": "home", "url": "https://www.scribd.com/", "principleId": "maximize-content-reduce-noise", "principleCheckId": "no-intrusive-interruptions", "guidanceId": "light-dismiss-a-dialog", "guidanceCategory": "user-experience", "summary": "The consent experience obscures the page on first load, especially on mobile.", "evidence": "Load screenshots show the consent dialog covering essentially the entire 360×800 viewport and more than half of the desktop viewport before users can engage with Scribd content.", "artifacts": [ "evidence/category-mobile.png", "evidence/home-desktop.png", "evidence/upload-desktop.png" ], "suggestedFix": "Use a compact, content-preserving first layer with equally prominent accept/reject actions; move partner-level controls into an explicitly opened preference dialog and preserve semantic light-dismiss where regulation permits.", "effort": "medium" }, { "id": "F02", "severity": "medium", "confidence": "high", "pathId": "home", "url": "https://www.scribd.com/", "principleId": "respect-user-preferences", "principleCheckId": "respects-color-scheme", "guidanceId": "dark-mode", "guidanceCategory": "user-experience", "summary": "The site does not honor the user’s dark color-scheme preference.", "evidence": "Under prefers-color-scheme: dark, the probe reports color-scheme: normal and the consent surface remains rgb(255,255,254) with dark text; the screenshot remains a light-themed UI.", "artifacts": [ "evidence/home-dark.png", "evidence/dark-probe.json" ], "suggestedFix": "Declare color-scheme: light dark and map surfaces, text, controls, and the consent UI through theme tokens using prefers-color-scheme or light-dark().", "effort": "medium" }, { "id": "F03", "severity": "low", "confidence": "medium", "pathId": "home", "url": "https://www.scribd.com/", "principleId": "implement-natural-interactions", "principleCheckId": "view-transitions", "guidanceId": "cross-document-transitions", "guidanceCategory": "user-experience", "summary": "Cross-page navigation swaps views without an authored View Transition.", "evidence": "The 5-second home-to-category capture shows a direct document swap; probes found no authored view-transition rules even though the browser exposes document.startViewTransition.", "artifacts": [ "evidence/home-to-category.mp4", "evidence/home-to-category-contact.png", "evidence/motion-probe.json" ], "suggestedFix": "Add @view-transition { navigation: auto } for same-origin MPA navigation and name only stable shared elements, with a reduced-motion-safe fallback.", "effort": "small" }, { "id": "F04", "severity": "low", "confidence": "medium", "pathId": "home", "url": "https://www.scribd.com/", "principleId": "adapt-to-the-form-factor", "principleCheckId": "component-level-responsiveness", "guidanceId": "size-aware-styling", "guidanceCategory": "css-layout", "summary": "Responsive behavior is viewport-driven rather than component-aware.", "evidence": "The CSS/DOM probe found no container query rules, although the mobile layout itself reflows without horizontal overflow.", "artifacts": [ "evidence/ui-probe.json", "evidence/home-layout-mobile.json" ], "suggestedFix": "Give reusable search, card, navigation, and consent components containment and use @container for local layout changes while retaining viewport fallbacks where needed.", "effort": "medium" }, { "id": "F05", "severity": "medium", "confidence": "high", "pathId": "home", "url": "https://www.scribd.com/", "principleId": "adapt-to-the-form-factor", "principleCheckId": "input-modality-aware", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "summary": "Several controls have weak keyboard focus indication or undersized touch geometry.", "evidence": "The focus probe found many actionable elements with outline-style none, including search and navigation controls; the mobile menu control measured 24×40px and consent checkboxes measured 16×16px.", "artifacts": [ "evidence/ui-probe.json" ], "suggestedFix": "Provide a high-contrast :focus-visible ring for every control and make each pointer target at least 44×44 CSS pixels without shrinking the visual design.", "effort": "small" }, { "id": "F06", "severity": "high", "confidence": "high", "pathId": "home", "url": "https://www.scribd.com/", "principleId": "be-fast-and-stable", "principleCheckId": "good-core-web-vitals", "guidanceId": "performance", "guidanceCategory": "performance", "summary": "Cold-load performance is far outside the good user-experience range.", "evidence": "Lighthouse measured LCP 18.6s, FCP 6.6s, TTI 19.8s, TBT 650ms, and a performance score of 0.41. A separate trace was much faster (LCP 1.90s), showing substantial run/network variance but confirming at least one 126ms long task.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-trace-summary.json", "evidence/home-trace.json" ], "suggestedFix": "Profile the LCP path, prioritize only the LCP asset, and delay non-critical product, survey, payment, and analytics code until interaction or idle time.", "effort": "large" }, { "id": "F07", "severity": "medium", "confidence": "high", "pathId": "home", "url": "https://www.scribd.com/", "principleId": "be-fast-and-stable", "principleCheckId": "efficient-resource-delivery", "guidanceId": "optimize-script-priority", "guidanceCategory": "performance", "summary": "The critical network path includes excessive scripts and an uncompressed document response.", "evidence": "The HAR recorded 72 requests and 2.85MB transferred; 32 scripts accounted for 2.13MB. The 386KB HTML response had no content encoding, and DOM inspection found one synchronous head script plus five unrestricted stylesheets.", "artifacts": [ "evidence/home-summary.json", "evidence/home.har", "evidence/resource-dom-probe.json" ], "suggestedFix": "Compress HTML, keep all non-critical scripts async/deferred, split route code, and defer survey/payment integrations and non-critical styles until needed.", "effort": "medium" }, { "id": "F08", "severity": "medium", "confidence": "high", "pathId": "home", "url": "https://www.scribd.com/", "principleId": "be-fast-and-stable", "principleCheckId": "trim-unused-and-duplicate-code", "guidanceId": "identify-heavy-scripts", "guidanceCategory": "performance", "summary": "The landing page ships a large amount of unused JavaScript.", "evidence": "Lighthouse estimated 905KiB of removable JavaScript, led by Stripe (176KB waste), application chunks, Survicate, and multiple tag-manager bundles; it also estimated 28KiB unused CSS.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-summary.json" ], "suggestedFix": "Load Stripe, surveys, and route-specific code only at the moment their feature is invoked, and consolidate tag-manager/analytics bootstraps.", "effort": "large" }, { "id": "F09", "severity": "medium", "confidence": "high", "pathId": "category", "url": "https://www.scribd.com/docs/Technology-Engineering", "principleId": "be-inclusive", "principleCheckId": "names-roles-labels", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "summary": "Some category links expose accessible names that do not match their visible labels.", "evidence": "Lighthouse reported label-content-name-mismatch for category cards, e.g. visible “Art / 6 categories / View all” with aria-label “View all categories in Art”.", "artifacts": [ "evidence/lighthouse-home.json" ], "suggestedFix": "Let the visible card text form the accessible name, or make the aria-label include the visible wording in the same order.", "effort": "small" }, { "id": "F10", "severity": "low", "confidence": "high", "pathId": "home", "url": "https://www.scribd.com/", "principleId": "be-discoverable", "principleCheckId": "crawlable-and-mobile-friendly", "guidanceId": "html", "guidanceCategory": "html", "summary": "A small set of links uses generic text.", "evidence": "Lighthouse SEO found two “Learn more” links with no destination context, despite the page otherwise using crawlable hrefs and a valid viewport.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/recon.json" ], "suggestedFix": "Include the destination topic in link text or its accessible name, such as “Learn more about copyright and DMCA”.", "effort": "trivial" }, { "id": "F11", "severity": "high", "confidence": "high", "pathId": "home", "url": "https://www.scribd.com/", "principleId": "be-private-and-secure", "principleCheckId": "secure-transport-and-headers", "guidanceId": "security", "guidanceCategory": "security", "summary": "Important browser security policies and cookie protections are missing.", "evidence": "Header inspection found no CSP, X-Content-Type-Options, clickjacking policy, Referrer-Policy, or Permissions-Policy. One first-party stable-ID cookie lacked Secure, while another used SameSite=None with a 400-day lifetime. HSTS was present.", "artifacts": [ "evidence/headers.json", "evidence/cookies.json" ], "suggestedFix": "Deploy a nonce/hash-based CSP with frame-ancestors, add nosniff, strict referrer and permissions policies, and mark all HTTPS cookies Secure with the narrowest SameSite and lifetime compatible with their purpose.", "effort": "medium" }, { "id": "F12", "severity": "high", "confidence": "high", "pathId": "home", "url": "https://www.scribd.com/", "principleId": "be-private-and-secure", "principleCheckId": "data-minimisation-and-third-parties", "guidanceId": "privacy", "guidanceCategory": "privacy", "summary": "Third-party tracking and integration code dominates the initial load.", "evidence": "The HAR attributed 69 of 72 requests and 2.46MB of 2.85MB transferred to non-www origins. The tracker probe found 16 external origins and five known tracker domains, while the UI advertises 53 IAB partners.", "artifacts": [ "evidence/home-summary.json", "evidence/home.har", "evidence/trackers.json", "evidence/home-desktop.png" ], "suggestedFix": "Block optional integrations before consent, remove duplicate analytics tags, proxy or self-host essential assets where appropriate, and load payment/survey/social code only in context.", "effort": "large" }, { "id": "F13", "severity": "medium", "confidence": "medium", "pathId": "signup", "url": "https://www.scribd.com/oauth/signup", "principleId": "be-private-and-secure", "principleCheckId": "in-context-permissions-and-modern-auth", "guidanceId": "passkeys", "guidanceCategory": "identity", "summary": "Public signup supports password and federated identity but exposes no passkey route.", "evidence": "The signup DOM uses email + new-password and Google/Facebook/Apple providers; script inspection found no navigator.credentials, PublicKeyCredential, or WebAuthn integration. No permission prompts fired on load.", "artifacts": [ "evidence/signup-probe.json", "evidence/signup-detail.json", "evidence/signup-invalid-mobile.png" ], "suggestedFix": "Offer passkey registration and authentication alongside federated methods, with password retained as a recovery-compatible fallback during rollout.", "effort": "large" }, { "id": "F14", "severity": "medium", "confidence": "high", "pathId": "locale-es", "url": "https://es.scribd.com/", "principleId": "be-internationalised", "principleCheckId": "lang-dir-and-logical-properties", "guidanceId": "translator", "guidanceCategory": "built-in-ai", "summary": "The advertised Spanish locale target resolves to English content in a fresh browser session.", "evidence": "The homepage advertises hreflang=es at es.scribd.com, but navigating there ended at https://www.scribd.com/ with lang=en-US, an English title, and English H1/content.", "artifacts": [ "evidence/platform-seo-probe.json", "evidence/spanish-locale.json" ], "suggestedFix": "Honor explicit locale URLs independently of browser/geolocation defaults, preserve canonical/hreflang reciprocity, and set lang/dir from the delivered translation.", "effort": "medium" }, { "id": "F15", "severity": "medium", "confidence": "high", "pathId": "home", "url": "https://www.scribd.com/", "principleId": "be-trustworthy", "principleCheckId": "no-dark-patterns", "guidanceId": "custom-button-actions", "guidanceCategory": "user-experience", "summary": "Optional consent purposes are preselected by default.", "evidence": "First-load screenshots show Storage, Targeted Advertising, Personalization, and Performance Cookies all checked. Reject Non-Essential is visible and comparable, but “Save Preferences” preserves the opt-in defaults unless users edit each purpose.", "artifacts": [ "evidence/home-desktop.png", "evidence/category-mobile.png" ], "suggestedFix": "Default optional purposes to off and make consent an affirmative action; keep Reject Non-Essential as prominent and easy as Accept All.", "effort": "small" }, { "id": "F16", "severity": "medium", "confidence": "high", "pathId": "home", "url": "https://www.scribd.com/", "principleId": "be-sustainable", "principleCheckId": "optimised-assets", "guidanceId": "optimize-image-priority", "guidanceCategory": "performance", "summary": "Most images lack responsive source selection.", "evidence": "The images primitive found 33 of 36 images without srcset and two oversized images; formats and dimensions were otherwise modern and stable.", "artifacts": [ "evidence/images.json" ], "suggestedFix": "Provide width-based srcset/sizes for hero and category artwork and serve only the resolution each rendered slot needs.", "effort": "medium" }, { "id": "F17", "severity": "medium", "confidence": "high", "pathId": "home", "url": "https://www.scribd.com/", "principleId": "be-sustainable", "principleCheckId": "third-party-and-media-budget", "guidanceId": "deprioritize-background-fetches", "guidanceCategory": "performance", "summary": "Third-party scripts consume a disproportionate share of page resources.", "evidence": "Third-party origins transferred 2.46MB (86% of the load); Google Tag Manager alone transferred 858KB, before a user invoked payment, surveys, or social functionality.", "artifacts": [ "evidence/home-summary.json", "evidence/trackers.json" ], "suggestedFix": "Set a route-level third-party budget, remove duplicate tags, and gate surveys, Stripe, social pixels, and advertising code behind user intent and consent.", "effort": "large" }, { "id": "F18", "severity": "low", "confidence": "high", "pathId": "document", "url": "https://www.scribd.com/document/443393015/Solvent-Cement-for-Joining-PVC-Pipe-Adhesives-Formulation-28-3-2019", "principleId": "be-agent-ready", "principleCheckId": "structured-agent-capabilities", "guidanceId": "webmcp", "guidanceCategory": "webmcp", "summary": "Document capabilities are not exposed through structured agent tools, and several major AI crawlers are explicitly blocked.", "evidence": "The document probe found no WebMCP or agentic tool registration. robots.txt disallows CCBot, Claude-Web, ClaudeBot, AI2Bot, and others, despite public document content having summarisation value.", "artifacts": [ "evidence/agent-i18n-probe.json", "evidence/robots-sitemap.json", "evidence/discoverability.json" ], "suggestedFix": "If agent access matches product policy, expose tightly scoped read/search/summarise actions through agentic forms or WebMCP and document a deliberate crawler policy; keep upload, purchase, and account actions permission-gated.", "effort": "large" }, { "id": "F19", "severity": "medium", "confidence": "medium", "pathId": "document", "url": "https://www.scribd.com/document/443393015/Solvent-Cement-for-Joining-PVC-Pipe-Adhesives-Formulation-28-3-2019", "principleId": "be-memory-efficient", "principleCheckId": "bounded-footprint", "guidanceId": "performance", "guidanceCategory": "performance", "summary": "The public two-page document viewer starts with a large JavaScript heap graph.", "evidence": "The baseline heap summary contained 1,058,563 heap nodes, 4,536,273 edges, and 58.3MB of self-size. Ten scroll-to-end/back cycles produced 59.1MB and 1,069,632 nodes, a small delta that does not itself prove a leak but leaves a heavy baseline for a two-page document.", "artifacts": [ "evidence/heap-baseline.json", "evidence/heap-post.json" ], "suggestedFix": "Profile the reader’s initial heap by constructor and retainers, lazy-create offscreen/recommendation UI, and unload document/page structures no longer needed.", "effort": "large" }, { "id": "F20", "severity": "medium", "confidence": "high", "pathId": "home", "url": "https://www.scribd.com/", "principleId": "be-fast-and-stable", "principleCheckId": "efficient-main-thread", "guidanceId": "break-up-long-tasks", "guidanceCategory": "performance", "summary": "Cold-load scripting blocks the main thread for too long.", "evidence": "Lighthouse measured 650ms Total Blocking Time; the independent trace recorded a 126ms long task and 76ms of blocking time.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-trace-summary.json" ], "suggestedFix": "Break large startup work into prioritized tasks, defer non-critical integrations, and yield between hydration or initialization chunks.", "effort": "medium" } ], "taskList": [ { "id": "T01", "title": "Cut the cold-load LCP and unused JavaScript by intent-loading Stripe, surveys, social pixels, and analytics", "priority": 1, "findingIds": [ "F06", "F07", "F08", "F12", "F17", "F20" ], "guidanceId": "identify-heavy-scripts", "status": "open" }, { "id": "T02", "title": "Deploy CSP and complete browser security/cookie policies", "priority": 2, "findingIds": [ "F11" ], "guidanceId": "security", "status": "open" }, { "id": "T03", "title": "Replace the full-screen, preselected consent wall with compact privacy-respecting defaults", "priority": 3, "findingIds": [ "F01", "F15" ], "guidanceId": "light-dismiss-a-dialog", "status": "open" }, { "id": "T04", "title": "Restore visible focus and 44×44 touch targets across header and consent controls", "priority": 4, "findingIds": [ "F05", "F09" ], "guidanceId": "accessibility", "status": "open" }, { "id": "T05", "title": "Honor explicit locale URLs and validate hreflang delivery", "priority": 5, "findingIds": [ "F14" ], "guidanceId": "translator", "status": "open" }, { "id": "T06", "title": "Add responsive image candidates and enforce a third-party/resource budget", "priority": 6, "findingIds": [ "F16", "F17" ], "guidanceId": "optimize-image-priority", "status": "open" }, { "id": "T07", "title": "Profile and reduce the document reader’s initial heap footprint", "priority": 7, "findingIds": [ "F19" ], "guidanceId": "performance", "status": "open" }, { "id": "T08", "title": "Add passkey support to account creation and sign-in", "priority": 8, "findingIds": [ "F13" ], "guidanceId": "passkeys", "status": "open" }, { "id": "T09", "title": "Add dark-theme tokens and color-scheme integration", "priority": 9, "findingIds": [ "F02" ], "guidanceId": "dark-mode", "status": "open" }, { "id": "T10", "title": "Adopt container queries and cross-document View Transitions for reusable/navigation surfaces", "priority": 10, "findingIds": [ "F03", "F04" ], "guidanceId": "cross-document-transitions", "status": "open" }, { "id": "T11", "title": "Correct category accessible names and generic link text", "priority": 11, "findingIds": [ "F09", "F10" ], "guidanceId": "accessibility", "status": "open" }, { "id": "T12", "title": "Define a deliberate agent-access policy and structured read/search capabilities", "priority": 12, "findingIds": [ "F18" ], "guidanceId": "webmcp", "status": "open" } ], "budget": { "wallClockSeconds": 2700, "pathCount": 7, "auditPasses": 1 }, "agent": "pi", "runId": "2026-07-19T01-52-01-764Z" }