{ "url": "https://weather.com", "auditedAt": "2026-07-24T08:46:49.037Z", "mode": "report", "status": "completed", "statusDetail": "Coverage-complete representative-template audit. Radar rendering did not expose map content in headless Chrome, so map-specific usability was not asserted; all atomic checks were nevertheless judged with other direct evidence.", "page": { "appType": "hybrid", "framework": "Next.js / React", "notes": "Public, locale-aware weather forecast MPA/hybrid with forecast listings, interactive radar, account flow, advertising and consent management. Not covered: signup/password recovery, geolocation permission flow, paid/commercial flows, individual editorial articles, every locale, or live field INP." }, "evidenceUsed": [ "screenshot", "dom", "evaluate-probe", "layout-metrics", "trace", "har", "discoverability", "headers", "cookies", "trackers", "images", "secrets", "lighthouse", "heap-summary" ], "guidanceConsulted": [ "dark-mode", "accessibility", "same-document-transitions", "scrollytelling", "shrinking-header-on-scroll", "declarative-dialog-popover-control", "size-aware-styling", "forms", "performance", "optimize-image-priority", "identify-heavy-scripts", "html", "security", "privacy", "flicker-free-client-side-ab-testing", "translator", "validate-input-after-interaction", "efficient-background-processing", "webmcp", "manage-recurring-intervals" ], "artifacts": [ { "type": "other", "path": "evidence/home-recon.json", "caption": "home recon", "findingIds": [ "F15" ] }, { "type": "screenshot", "path": "evidence/home-desktop.png", "caption": "home desktop", "findingIds": [ "F01", "F05" ] }, { "type": "screenshot", "path": "evidence/home-mobile-full.png", "caption": "home mobile full", "findingIds": [ "F05" ] }, { "type": "screenshot", "path": "evidence/home-dark.png", "caption": "home dark", "findingIds": [ "F01" ] }, { "type": "screenshot", "path": "evidence/home-contrast.png", "caption": "home contrast", "findingIds": [] }, { "type": "layout", "path": "evidence/home-mobile-layout.json", "caption": "home mobile layout", "findingIds": [ "F08" ] }, { "type": "dom", "path": "evidence/home-comprehensive.json", "caption": "home comprehensive", "findingIds": [ "F02", "F03", "F04", "F12", "F20" ] }, { "type": "other", "path": "evidence/home-reduced-motion.json", "caption": "home reduced motion", "findingIds": [] }, { "type": "trace", "path": "evidence/home-trace.json", "caption": "home trace", "findingIds": [] }, { "type": "trace-summary", "path": "evidence/home-trace-summary.json", "caption": "home trace summary", "findingIds": [ "F07", "F09" ] }, { "type": "har", "path": "evidence/home.har", "caption": "home", "findingIds": [ "F10", "F18" ] }, { "type": "har-summary", "path": "evidence/home-summary.json", "caption": "home summary", "findingIds": [ "F06", "F10", "F11", "F18", "F23" ] }, { "type": "discoverability", "path": "evidence/home-discoverability.json", "caption": "home discoverability", "findingIds": [] }, { "type": "screenshot", "path": "evidence/home-discoverability-rendered.png", "caption": "home discoverability rendered", "findingIds": [] }, { "type": "screenshot", "path": "evidence/home-discoverability-crawler.png", "caption": "home discoverability crawler", "findingIds": [] }, { "type": "other", "path": "evidence/home-headers.json", "caption": "home headers", "findingIds": [ "F17" ] }, { "type": "other", "path": "evidence/home-cookies.json", "caption": "home cookies", "findingIds": [ "F17" ] }, { "type": "other", "path": "evidence/home-trackers.json", "caption": "home trackers", "findingIds": [ "F18" ] }, { "type": "other", "path": "evidence/home-images.json", "caption": "home images", "findingIds": [ "F22" ] }, { "type": "other", "path": "evidence/home-secrets.json", "caption": "home secrets", "findingIds": [] }, { "type": "lighthouse", "path": "evidence/lighthouse-home.json", "caption": "lighthouse home", "findingIds": [] }, { "type": "lighthouse", "path": "evidence/lighthouse-home-summary.json", "caption": "lighthouse home summary", "findingIds": [ "F07", "F08", "F09", "F10", "F11", "F12", "F13", "F14", "F15", "F16", "F22", "F23" ] }, { "type": "dom", "path": "evidence/hourly-dom-summary.json", "caption": "hourly dom summary", "findingIds": [ "F03" ] }, { "type": "layout", "path": "evidence/hourly-mobile-layout.json", "caption": "hourly mobile layout", "findingIds": [] }, { "type": "dom", "path": "evidence/tenday-dom-summary.json", "caption": "tenday dom summary", "findingIds": [ "F06" ] }, { "type": "layout", "path": "evidence/tenday-mobile-layout.json", "caption": "tenday mobile layout", "findingIds": [] }, { "type": "dom", "path": "evidence/radar-dom-summary.json", "caption": "radar dom summary", "findingIds": [] }, { "type": "layout", "path": "evidence/radar-mobile-layout.json", "caption": "radar mobile layout", "findingIds": [] }, { "type": "dom", "path": "evidence/login-dom-summary.json", "caption": "login dom summary", "findingIds": [ "F19", "F21" ] }, { "type": "layout", "path": "evidence/login-mobile-layout.json", "caption": "login mobile layout", "findingIds": [] }, { "type": "other", "path": "evidence/login-invalid-submit.json", "caption": "login invalid submit", "findingIds": [ "F21" ] }, { "type": "other", "path": "evidence/error-404.json", "caption": "error 404", "findingIds": [] }, { "type": "other", "path": "evidence/robots-sitemap.json", "caption": "robots sitemap", "findingIds": [ "F16" ] }, { "type": "heap", "path": "evidence/heap-baseline.heapsnapshot", "caption": "heap baseline", "findingIds": [] }, { "type": "heap", "path": "evidence/heap-post-scroll.heapsnapshot", "caption": "heap post scroll", "findingIds": [] }, { "type": "other", "path": "evidence/memory-metrics-scroll.json", "caption": "memory metrics scroll", "findingIds": [] } ], "config": { "loaded": false }, "coverage": { "catalogVersion": "modern-web-guidance@0.0.172", "catalogChecksum": "sha256:78ccfdb2d483f4c57d9dafed80fd86c6265585a56457c8dcfddc254b80fb44d7", "expected": 58, "recorded": 58, "judged": 58, "blocked": 0, "notRun": 0, "missing": 0, "unknown": 0, "duplicates": 0, "complete": true }, "checkOutcomes": [ { "principleId": "respect-user-preferences", "checkId": "respects-color-scheme", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "Screenshots under default and prefers-color-scheme: dark are visually identical: the consent surface and page remain fixed light/white, and the DOM probe found no site dark-theme response.", "findingIds": [ "F01" ], "pathIds": [ "today" ], "artifacts": [ "evidence/home-dark.png", "evidence/home-desktop.png" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-reduced-motion", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "evaluate under prefers-reduced-motion: reduce found no running animations and scroll-behavior auto.", "artifacts": [ "evidence/home-reduced-motion.json" ], "pathIds": [ "today" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-contrast", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "prefers-contrast screenshot retained visible controls/text; Lighthouse accessibility scored 100.", "artifacts": [ "evidence/home-contrast.png" ], "pathIds": [ "today" ] }, { "principleId": "implement-natural-interactions", "checkId": "view-transitions", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "The comprehensive CSS probe found no view-transition rules even though daily, hourly, 10-day and radar are prominent state/route changes.", "findingIds": [ "F02" ], "pathIds": [ "today" ], "artifacts": [ "evidence/home-comprehensive.json" ] }, { "principleId": "implement-natural-interactions", "checkId": "scroll-driven-animations", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "CSS probe found no scroll-linked animation, and layout tests captured only content scrolling, so no main-thread scroll animation anti-pattern applies.", "artifacts": [ "evidence/home-comprehensive.json" ], "pathIds": [ "today", "tenday" ] }, { "principleId": "implement-natural-interactions", "checkId": "physical-gestures", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "Forecast navigation uses native links and native overflow scrolling; no custom pointermove gesture layer was observed.", "artifacts": [ "evidence/home-comprehensive.json" ], "pathIds": [ "today", "hourly" ] }, { "principleId": "provide-guided-navigation", "checkId": "scroll-state-aware-chrome", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "The DOM/CSS probe found no scroll timeline and the long hourly/10-day templates expose no progress or scroll-aware header state.", "findingIds": [ "F03" ], "pathIds": [ "today" ], "artifacts": [ "evidence/home-comprehensive.json", "evidence/hourly-dom-summary.json" ] }, { "principleId": "provide-guided-navigation", "checkId": "anchored-positioning", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "The page contains menu/dialog surfaces, while the CSS probe found no anchor-name, position-anchor, or position-try rules.", "findingIds": [ "F04" ], "pathIds": [ "today" ], "artifacts": [ "evidence/home-comprehensive.json" ] }, { "principleId": "provide-guided-navigation", "checkId": "directs-attention", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "Forecast tabs expose Today, Hourly, 10-Day and Monthly destinations and preserve clear location context in page titles/headings.", "artifacts": [ "evidence/home-recon.json" ], "pathIds": [ "today", "hourly", "tenday" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "no-intrusive-interruptions", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "Desktop and mobile load screenshots show a blocking cookie dialog covering the primary weather content; on mobile it consumes nearly the full viewport. Reject all is equally prominent, which avoids a deceptive-choice finding.", "findingIds": [ "F05" ], "pathIds": [ "today" ], "artifacts": [ "evidence/home-desktop.png", "evidence/home-mobile-full.png" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "semantic-dismissible-primitives", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "The consent surface is exposed as role=dialog with explicit Accept all, Reject all and settings controls.", "artifacts": [ "evidence/home-desktop.png" ], "pathIds": [ "today" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "reduced-chrome", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "Rendered today/10-day DOM includes repeated “Advertisement” slots and “Sponsored Content”; the HAR records 78 third-party requests, while core forecast pages devote substantial structure to non-content modules.", "findingIds": [ "F06" ], "pathIds": [ "today" ], "artifacts": [ "evidence/tenday-dom-summary.json", "evidence/home-summary.json" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "responsive-no-horizontal-scroll", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "All four narrow layout probes reported viewport meta and 0 px horizontal overflow at 360×800.", "artifacts": [ "evidence/home-mobile-layout.json" ], "pathIds": [ "today", "hourly", "tenday", "login" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "component-level-responsiveness", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "CSS probe found a container-query rule; forecast layouts reflowed to 360 px without overflow.", "artifacts": [ "evidence/home-comprehensive.json" ], "pathIds": [ "today", "hourly", "tenday" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "input-modality-aware", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "Lighthouse accessibility scored 100 and focus probe showed a 3 px outline or focus ring on sampled primary controls; mobile controls remained operable.", "artifacts": [ "evidence/home-comprehensive.json" ], "pathIds": [ "today", "login" ] }, { "principleId": "support-core-task-success", "checkId": "clear-purpose-and-primary-action", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "Titles, location context, forecast tabs and current/forecast values make the weather task explicit on today, hourly and 10-day templates.", "artifacts": [ "evidence/hourly-dom-summary.json" ], "pathIds": [ "today", "hourly", "tenday" ] }, { "principleId": "support-core-task-success", "checkId": "primary-flow-completion", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "Today, hourly and ten-day forecast destinations loaded complete London forecast data through real links without account gating.", "artifacts": [ "evidence/tenday-dom-summary.json" ], "pathIds": [ "today", "hourly", "tenday" ] }, { "principleId": "support-core-task-success", "checkId": "clear-system-state-and-recovery", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "Synthetic missing route rendered a clear 404 explanation and recovery links to Video, Maps and Local Weather.", "artifacts": [ "evidence/error-404.json" ], "pathIds": [ "not-found" ] }, { "principleId": "be-fast-and-stable", "checkId": "good-core-web-vitals", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "Lighthouse measured LCP 12.7 s, CLS 0.146 and TBT 530 ms (performance 45). The first-party trace was better at LCP 2.29 s and TBT 91.5 ms, showing variability but not negating the poor throttled result.", "findingIds": [ "F07" ], "pathIds": [ "today" ], "artifacts": [ "evidence/lighthouse-home-summary.json", "evidence/home-trace-summary.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "visual-stability", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "Lighthouse measured CLS 0.146, including a 0.135 shift from an animated skeleton; the narrow layout probes were stable after their observation window.", "findingIds": [ "F08" ], "pathIds": [ "today" ], "artifacts": [ "evidence/lighthouse-home-summary.json", "evidence/home-mobile-layout.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-main-thread", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "Lighthouse reports 3.4 s main-thread work, 2.3 s JavaScript execution, and 530 ms TBT; the trace also captured a 141.5 ms long task.", "findingIds": [ "F09" ], "pathIds": [ "today" ], "artifacts": [ "evidence/lighthouse-home-summary.json", "evidence/home-trace-summary.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-resource-delivery", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "HAR captured 143 requests and 2.42 MB transferred, including two document redirects and multiple parser-discovered high-priority scripts; Lighthouse estimates 850 ms redirect waste and reports a 12.7 s LCP without fetchpriority.", "findingIds": [ "F10" ], "pathIds": [ "today" ], "artifacts": [ "evidence/home.har", "evidence/home-summary.json", "evidence/lighthouse-home-summary.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "trim-unused-and-duplicate-code", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "Lighthouse estimates 779 KiB unused JavaScript and 76 KiB legacy JavaScript. HAR shows 62 scripts and 2.09 MB script transfer, led by Taboola, Google Ads and Rubicon.", "findingIds": [ "F11" ], "pathIds": [ "today" ], "artifacts": [ "evidence/lighthouse-home-summary.json", "evidence/home-summary.json" ] }, { "principleId": "be-inclusive", "checkId": "names-roles-labels", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "Lighthouse details multiple hourly links whose aria-label omits visible label content, and the DOM probe found five links plus several buttons with no text or aria-label.", "findingIds": [ "F12" ], "pathIds": [ "today" ], "artifacts": [ "evidence/lighthouse-home-summary.json", "evidence/home-comprehensive.json" ] }, { "principleId": "be-inclusive", "checkId": "sufficient-contrast", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "Lighthouse accessibility scored 100 and the prefers-contrast capture retained visible text and controls.", "artifacts": [ "evidence/lighthouse-home-summary.json" ], "pathIds": [ "today" ] }, { "principleId": "be-inclusive", "checkId": "structure-and-focus", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "Main/nav/header/footer landmarks are present, a skip link appears on the 404 route, and sampled primary controls expose visible focus treatment.", "artifacts": [ "evidence/home-comprehensive.json" ], "pathIds": [ "today", "not-found" ] }, { "principleId": "be-inclusive", "checkId": "legible-text", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "Desktop/mobile captures and forecast DOM show readable text hierarchy and no horizontal clipping at 360 px.", "artifacts": [ "evidence/home-mobile-full.png" ], "pathIds": [ "today", "hourly", "tenday" ] }, { "principleId": "be-inclusive", "checkId": "zoom-reflow-targets-and-media", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "Viewport allows scaling (no maximum-scale/user-scalable=no); all tested templates reflow at 360 px without overflow, and Lighthouse accessibility scored 100.", "artifacts": [ "evidence/home-mobile-layout.json" ], "pathIds": [ "today", "hourly", "tenday", "login" ] }, { "principleId": "follow-best-practices", "checkId": "no-console-errors", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "Lighthouse captured React hydration error #418, FedCM NetworkError and missing en-GB translation messages in the console.", "findingIds": [ "F13" ], "pathIds": [ "today" ], "artifacts": [ "evidence/lighthouse-home-summary.json" ] }, { "principleId": "follow-best-practices", "checkId": "sound-document-and-assets", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "DOM reports html doctype, UTF-8 charset and valid viewport; image probe found dimensions on every img and no oversized rendered img in its sample.", "artifacts": [ "evidence/home-comprehensive.json" ], "pathIds": [ "today" ] }, { "principleId": "follow-best-practices", "checkId": "browser-platform-hygiene", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "Lighthouse found a large first-party JavaScript chunk without a source map and 24 KiB minification savings.", "findingIds": [ "F14" ], "pathIds": [ "today" ], "artifacts": [ "evidence/lighthouse-home-summary.json" ] }, { "principleId": "be-discoverable", "checkId": "title-and-description", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "Landing, hourly, ten-day, radar and login pages expose unique descriptive titles; landing has a descriptive meta description.", "artifacts": [ "evidence/home-comprehensive.json" ], "pathIds": [ "today", "hourly", "tenday", "radar", "login" ] }, { "principleId": "be-discoverable", "checkId": "crawlable-and-mobile-friendly", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "Lighthouse SEO found the hourly link text “More”; the DOM also includes empty links. The viewport and real hrefs otherwise passed.", "findingIds": [ "F15" ], "pathIds": [ "today" ], "artifacts": [ "evidence/lighthouse-home-summary.json", "evidence/home-recon.json" ] }, { "principleId": "be-discoverable", "checkId": "canonical-and-indexing-signals", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "Lighthouse reports hreflang=\"xc-MN\" as an unexpected language code. Canonical, robots and sitemap signals were otherwise present and successful.", "findingIds": [ "F16" ], "pathIds": [ "today" ], "artifacts": [ "evidence/lighthouse-home-summary.json", "evidence/robots-sitemap.json" ] }, { "principleId": "be-discoverable", "checkId": "structured-and-shareable-metadata", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "Landing DOM contains 3 JSON-LD blocks and 4 Open Graph tags corresponding to visible weather/location content.", "artifacts": [ "evidence/home-comprehensive.json" ], "pathIds": [ "today" ] }, { "principleId": "be-private-and-secure", "checkId": "secure-transport-and-headers", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "Headers probe found no CSP, X-Content-Type-Options, Referrer-Policy or Permissions-Policy; clickjacking protection was absent. Cookie probe found 15 cookies flagged insecure and extensive SameSite=None use. HTTPS and HSTS passed.", "findingIds": [ "F17" ], "pathIds": [ "today" ], "artifacts": [ "evidence/home-headers.json", "evidence/home-cookies.json" ] }, { "principleId": "be-private-and-secure", "checkId": "data-minimisation-and-third-parties", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "Tracker probe found 16 third-party origins and eight known trackers. HAR attributed 78 requests and 1.40 MB to third parties, including Taboola, DoubleClick, Rubicon and Amazon Ads.", "findingIds": [ "F18" ], "pathIds": [ "today" ], "artifacts": [ "evidence/home-trackers.json", "evidence/home-summary.json", "evidence/home.har" ] }, { "principleId": "be-private-and-secure", "checkId": "in-context-permissions-and-modern-auth", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "The login DOM contains email/password controls and no WebAuthn/passkey affordance; no permission prompt fired on load.", "findingIds": [ "F19" ], "pathIds": [ "login" ], "artifacts": [ "evidence/login-dom-summary.json" ] }, { "principleId": "be-private-and-secure", "checkId": "defensive-browser-policies", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "Headers probe found no CSP, X-Content-Type-Options, Referrer-Policy or Permissions-Policy; clickjacking protection was absent. Cookie probe found 15 cookies flagged insecure and extensive SameSite=None use. HTTPS and HSTS passed.", "findingIds": [ "F17" ], "pathIds": [ "today" ], "artifacts": [ "evidence/home-headers.json", "evidence/home-cookies.json" ] }, { "principleId": "be-resilient", "checkId": "progressive-enhancement", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "Discoverability probe found 70% raw/rendered word coverage, with title, H1 and description in server HTML; it is not a JS shell.", "artifacts": [ "evidence/home-discoverability.json" ], "pathIds": [ "today" ] }, { "principleId": "be-resilient", "checkId": "resilient-runtime-behaviour", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "Forecast pages stabilised with low post-load CLS in layout probes and the consent dialog remained within both desktop and 360 px viewports.", "artifacts": [ "evidence/home-mobile-layout.json" ], "pathIds": [ "today", "hourly", "tenday" ] }, { "principleId": "be-resilient", "checkId": "offline-and-installable", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "A web app manifest exists, but the runtime probe found no controlling service worker; forecast access therefore has no demonstrated offline fallback.", "findingIds": [ "F20" ], "pathIds": [ "today" ], "artifacts": [ "evidence/home-comprehensive.json" ] }, { "principleId": "be-resilient", "checkId": "network-and-http-failure-states", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "The representative 404 renders a useful explanation and links back to core weather surfaces rather than a blank shell.", "artifacts": [ "evidence/error-404.json" ], "pathIds": [ "not-found" ] }, { "principleId": "be-internationalised", "checkId": "lang-dir-and-logical-properties", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "Rendered document declares lang=en-GB and dir=ltr; locale navigation offers many language/region variants.", "artifacts": [ "evidence/home-comprehensive.json" ], "pathIds": [ "today", "not-found" ] }, { "principleId": "be-internationalised", "checkId": "locale-aware-data", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "London forecasts render locale-appropriate “Friday 24 July”, 24-hour time and BST labels across hourly/daily templates.", "artifacts": [ "evidence/hourly-dom-summary.json" ], "pathIds": [ "hourly", "tenday" ] }, { "principleId": "be-internationalised", "checkId": "time-zone-correctness", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "Forecast headings explicitly state BST and all hourly entries progress coherently across the local day boundary.", "artifacts": [ "evidence/hourly-dom-summary.json" ], "pathIds": [ "hourly" ] }, { "principleId": "be-trustworthy", "checkId": "no-dark-patterns", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "Consent offers equally prominent Accept all and Reject all actions plus settings; no confirmshaming or forced account gate was observed.", "artifacts": [ "evidence/home-desktop.png" ], "pathIds": [ "today" ] }, { "principleId": "be-trustworthy", "checkId": "humane-error-handling", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "Empty login submission leaves both required controls invalid using native constraint validation; labels remain present and no data is lost.", "artifacts": [ "evidence/login-invalid-submit.json" ], "pathIds": [ "login" ] }, { "principleId": "be-trustworthy", "checkId": "trustworthy-input-assistance", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "Login DOM shows both email and password inputs with empty autocomplete attributes; the site-search input explicitly uses autocomplete=\"off\".", "findingIds": [ "F21" ], "pathIds": [ "login" ], "artifacts": [ "evidence/login-dom-summary.json", "evidence/login-invalid-submit.json" ] }, { "principleId": "be-trustworthy", "checkId": "safe-commercial-and-account-flows", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "The login DOM contains email/password controls and no WebAuthn/passkey affordance; no permission prompt fired on load. Login DOM shows both email and password inputs with empty autocomplete attributes; the site-search input explicitly uses autocomplete=\"off\".", "findingIds": [ "F19", "F21" ], "pathIds": [ "login" ], "artifacts": [ "evidence/login-dom-summary.json", "evidence/login-invalid-submit.json" ] }, { "principleId": "be-sustainable", "checkId": "optimised-assets", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "Lighthouse reports the 256×256 Storm Radar PNG displayed around 70×70, with about 41 KiB potential savings; the image probe confirms a legacy PNG among otherwise SVG assets.", "findingIds": [ "F22" ], "pathIds": [ "today" ], "artifacts": [ "evidence/lighthouse-home-summary.json", "evidence/home-images.json" ] }, { "principleId": "be-sustainable", "checkId": "no-wasteful-work", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "HAR reports 1.40 MB third-party transfer across 78 requests; the largest scripts are recommendation and ad systems, while Lighthouse identifies their bundles as mostly unused.", "findingIds": [ "F23" ], "pathIds": [ "today" ], "artifacts": [ "evidence/home-summary.json", "evidence/lighthouse-home-summary.json" ] }, { "principleId": "be-sustainable", "checkId": "third-party-and-media-budget", "confidence": "high", "status": "issues", "method": "Direct browser/CDP evidence and guidance comparison.", "evidence": "HAR reports 1.40 MB third-party transfer across 78 requests; the largest scripts are recommendation and ad systems, while Lighthouse identifies their bundles as mostly unused.", "findingIds": [ "F23" ], "pathIds": [ "today" ], "artifacts": [ "evidence/home-summary.json", "evidence/lighthouse-home-summary.json" ] }, { "principleId": "be-agent-ready", "checkId": "structured-agent-capabilities", "confidence": "high", "status": "not-applicable", "method": "Applicability judgement from recon and audited scope.", "evidence": "No declared agent-facing transaction or tool surface was found; emerging WebMCP capability is optional here, while weather content remains machine-readable through server HTML and JSON-LD.", "reason": "No declared agent-facing transaction or tool surface was found; emerging WebMCP capability is optional here, while weather content remains machine-readable through server HTML and JSON-LD." }, { "principleId": "be-agent-ready", "checkId": "on-device-inference", "confidence": "high", "status": "not-applicable", "method": "Applicability judgement from recon and audited scope.", "evidence": "No summarisation or generative interaction is offered, so on-device inference has no concrete user task to serve in the audited forecast/account scope.", "reason": "No summarisation or generative interaction is offered, so on-device inference has no concrete user task to serve in the audited forecast/account scope." }, { "principleId": "be-memory-efficient", "checkId": "no-leak-under-repeated-interaction", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "After 10 full-page scroll cycles, heap snapshot node count decreased by 393 and retained size changed only +10,284 bytes; DOM count stayed exactly 1,403.", "artifacts": [ "evidence/heap-post-scroll.heapsnapshot" ], "pathIds": [ "tenday" ] }, { "principleId": "be-memory-efficient", "checkId": "bounded-footprint", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "Baseline heap summary measured 623,558 nodes and 34.68 MB self size for the script-heavy forecast page; footprint remained stable after interaction.", "artifacts": [ "evidence/heap-baseline.heapsnapshot" ], "pathIds": [ "tenday" ] }, { "principleId": "be-memory-efficient", "checkId": "no-detached-dom-or-unbounded-listeners", "confidence": "high", "status": "pass", "method": "Direct browser/CDP inspection across representative conditions.", "evidence": "Before/after heap constructor summaries show no Detached* population among top constructors; DOM count stayed 1,403 and closures decreased after repeated scroll.", "artifacts": [ "evidence/heap-post-scroll.heapsnapshot" ], "pathIds": [ "tenday" ] } ], "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": "pass" }, { "principleId": "support-core-task-success", "expectation": "default", "status": "pass" }, { "principleId": "be-fast-and-stable", "expectation": "default", "status": "issues", "findingIds": [ "F07", "F08", "F09", "F10", "F11" ] }, { "principleId": "be-inclusive", "expectation": "default", "status": "issues", "findingIds": [ "F12" ] }, { "principleId": "follow-best-practices", "expectation": "default", "status": "issues", "findingIds": [ "F13", "F14" ] }, { "principleId": "be-discoverable", "expectation": "default", "status": "issues", "findingIds": [ "F15", "F16" ] }, { "principleId": "be-private-and-secure", "expectation": "default", "status": "issues", "findingIds": [ "F17", "F18", "F19" ] }, { "principleId": "be-resilient", "expectation": "contextual", "status": "issues", "findingIds": [ "F20" ] }, { "principleId": "be-internationalised", "expectation": "contextual", "status": "pass" }, { "principleId": "be-trustworthy", "expectation": "default", "status": "issues", "findingIds": [ "F21", "F19" ] }, { "principleId": "be-sustainable", "expectation": "contextual", "status": "issues", "findingIds": [ "F22", "F23" ] }, { "principleId": "be-agent-ready", "expectation": "contextual", "status": "not-applicable", "reason": "The audited forecast/account scope exposes no declared agent-facing tool or inference task; emerging agent capabilities are optional, while crawlable machine-readable content was evaluated separately." }, { "principleId": "be-memory-efficient", "expectation": "default", "status": "pass" } ], "paths": [ { "id": "today", "description": "Landing/current-conditions forecast and global navigation; representative forecast overview.", "url": "https://weather.com/en-GB/gb/england/greater-london/city/london/today?Goto=Redirected", "conditions": [ "desktop", "360x800", "prefers-color-scheme: dark", "prefers-contrast: more", "prefers-reduced-motion: reduce", "no JavaScript crawler" ], "result": "issues" }, { "id": "hourly", "description": "Hourly forecast listing, representing dense time-series weather content.", "url": "https://weather.com/en-GB/gb/england/greater-london/city/london/hourbyhour", "conditions": [ "desktop DOM", "360x800" ], "result": "issues" }, { "id": "tenday", "description": "Ten-day forecast listing and repeated long-page scroll interaction.", "url": "https://weather.com/en-GB/gb/england/greater-london/city/london/tenday", "conditions": [ "desktop DOM", "360x800", "10 repeated scroll cycles", "heap before/after" ], "result": "issues" }, { "id": "radar", "description": "Interactive radar entry, representing the map-heavy journey.", "url": "https://weather.com/en-GB/weather/radar/interactive/l/0b8697c01baca04214b4abd206319d3eba60db5fb05c191012c4e02f6bdb23a4", "conditions": [ "desktop DOM", "360x800" ], "result": "failed" }, { "id": "login", "description": "Account sign-in form, representing authentication and form handling.", "url": "https://weather.com/en-GB/login", "conditions": [ "desktop DOM", "360x800", "empty submit" ], "result": "issues" }, { "id": "not-found", "description": "Synthetic missing route, representing HTTP error recovery.", "url": "https://weather.com/en-GB/not-a-real-weather-page-web-uplift", "conditions": [ "desktop DOM" ], "result": "pass" } ], "findings": [ { "id": "F01", "severity": "medium", "confidence": "high", "principleId": "respect-user-preferences", "principleCheckId": "respects-color-scheme", "guidanceId": "dark-mode", "guidanceCategory": "user-experience", "summary": "The site does not adapt to the user’s dark colour preference.", "evidence": "Screenshots under default and prefers-color-scheme: dark are visually identical: the consent surface and page remain fixed light/white, and the DOM probe found no site dark-theme response.", "artifacts": [ "evidence/home-dark.png", "evidence/home-desktop.png" ], "suggestedFix": "Declare color-scheme and provide preference-driven surface/text tokens with prefers-color-scheme or light-dark().", "effort": "medium", "pathId": "today" }, { "id": "F02", "severity": "low", "confidence": "high", "principleId": "implement-natural-interactions", "principleCheckId": "view-transitions", "guidanceId": "same-document-transitions", "guidanceCategory": "user-experience", "summary": "Forecast route and state changes do not use View Transitions.", "evidence": "The comprehensive CSS probe found no view-transition rules even though daily, hourly, 10-day and radar are prominent state/route changes.", "artifacts": [ "evidence/home-comprehensive.json" ], "suggestedFix": "Add same-document or cross-document View Transitions for forecast navigation, with a reduced-motion fallback.", "effort": "medium", "pathId": "today" }, { "id": "F03", "severity": "low", "confidence": "high", "principleId": "provide-guided-navigation", "principleCheckId": "scroll-state-aware-chrome", "guidanceId": "shrinking-header-on-scroll", "guidanceCategory": "user-experience", "summary": "Long forecast pages do not expose scroll-state-aware chrome.", "evidence": "The DOM/CSS probe found no scroll timeline and the long hourly/10-day templates expose no progress or scroll-aware header state.", "artifacts": [ "evidence/home-comprehensive.json", "evidence/hourly-dom-summary.json" ], "suggestedFix": "Use a sticky header plus scroll-state/container-query or progress treatment that preserves location context.", "effort": "medium", "pathId": "today" }, { "id": "F04", "severity": "low", "confidence": "high", "principleId": "provide-guided-navigation", "principleCheckId": "anchored-positioning", "guidanceId": "declarative-dialog-popover-control", "guidanceCategory": "user-experience", "summary": "Menus and overlays are not built with CSS anchor positioning.", "evidence": "The page contains menu/dialog surfaces, while the CSS probe found no anchor-name, position-anchor, or position-try rules.", "artifacts": [ "evidence/home-comprehensive.json" ], "suggestedFix": "Use popover plus CSS anchor positioning and position-try fallbacks for menus and transient overlays.", "effort": "medium", "pathId": "today" }, { "id": "F05", "severity": "medium", "confidence": "high", "principleId": "maximize-content-reduce-noise", "principleCheckId": "no-intrusive-interruptions", "guidanceId": "declarative-dialog-popover-control", "guidanceCategory": "user-experience", "summary": "A first-visit consent dialog obscures the entire forecast until a choice is made.", "evidence": "Desktop and mobile load screenshots show a blocking cookie dialog covering the primary weather content; on mobile it consumes nearly the full viewport. Reject all is equally prominent, which avoids a deceptive-choice finding.", "artifacts": [ "evidence/home-desktop.png", "evidence/home-mobile-full.png" ], "suggestedFix": "Minimise the initial notice, preserve equal accept/reject choices, and avoid obscuring the primary forecast where consent law permits.", "effort": "medium", "pathId": "today" }, { "id": "F06", "severity": "medium", "confidence": "high", "principleId": "maximize-content-reduce-noise", "principleCheckId": "reduced-chrome", "guidanceId": "html", "guidanceCategory": "html", "summary": "Advertising and sponsored chrome repeatedly interrupt forecast content.", "evidence": "Rendered today/10-day DOM includes repeated “Advertisement” slots and “Sponsored Content”; the HAR records 78 third-party requests, while core forecast pages devote substantial structure to non-content modules.", "artifacts": [ "evidence/tenday-dom-summary.json", "evidence/home-summary.json" ], "suggestedFix": "Reduce ad-slot frequency and reserve quieter, clearly separated placements after core forecast content.", "effort": "large", "pathId": "today" }, { "id": "F07", "severity": "high", "confidence": "high", "principleId": "be-fast-and-stable", "principleCheckId": "good-core-web-vitals", "guidanceId": "performance", "guidanceCategory": "performance", "summary": "Lab loading performance misses the Core Web Vitals quality bar.", "evidence": "Lighthouse measured LCP 12.7 s, CLS 0.146 and TBT 530 ms (performance 45). The first-party trace was better at LCP 2.29 s and TBT 91.5 ms, showing variability but not negating the poor throttled result.", "artifacts": [ "evidence/lighthouse-home-summary.json", "evidence/home-trace-summary.json" ], "suggestedFix": "Profile the LCP chain, prioritise the hero background, remove redirects, and defer non-critical ad/analytics work.", "effort": "large", "pathId": "today" }, { "id": "F08", "severity": "medium", "confidence": "high", "principleId": "be-fast-and-stable", "principleCheckId": "visual-stability", "guidanceId": "performance", "guidanceCategory": "performance", "summary": "Late forecast content causes measurable layout shift.", "evidence": "Lighthouse measured CLS 0.146, including a 0.135 shift from an animated skeleton; the narrow layout probes were stable after their observation window.", "artifacts": [ "evidence/lighthouse-home-summary.json", "evidence/home-mobile-layout.json" ], "suggestedFix": "Reserve final component geometry for forecast skeletons and media; do not replace placeholders with differently sized content.", "effort": "medium", "pathId": "today" }, { "id": "F09", "severity": "high", "confidence": "high", "principleId": "be-fast-and-stable", "principleCheckId": "efficient-main-thread", "guidanceId": "identify-heavy-scripts", "guidanceCategory": "performance", "summary": "JavaScript keeps the main thread busy during load.", "evidence": "Lighthouse reports 3.4 s main-thread work, 2.3 s JavaScript execution, and 530 ms TBT; the trace also captured a 141.5 ms long task.", "artifacts": [ "evidence/lighthouse-home-summary.json", "evidence/home-trace-summary.json" ], "suggestedFix": "Split and defer forecast-independent code, schedule lower-priority work, and delay ads/analytics until after core content is interactive.", "effort": "large", "pathId": "today" }, { "id": "F10", "severity": "high", "confidence": "high", "principleId": "be-fast-and-stable", "principleCheckId": "efficient-resource-delivery", "guidanceId": "optimize-image-priority", "guidanceCategory": "performance", "summary": "The landing page ships a heavy, redirecting critical path.", "evidence": "HAR captured 143 requests and 2.42 MB transferred, including two document redirects and multiple parser-discovered high-priority scripts; Lighthouse estimates 850 ms redirect waste and reports a 12.7 s LCP without fetchpriority.", "artifacts": [ "evidence/home.har", "evidence/home-summary.json", "evidence/lighthouse-home-summary.json" ], "suggestedFix": "Link directly to the resolved locale/location URL, prioritise the LCP image, and move non-critical scripts off the critical path.", "effort": "large", "pathId": "today" }, { "id": "F11", "severity": "high", "confidence": "high", "principleId": "be-fast-and-stable", "principleCheckId": "trim-unused-and-duplicate-code", "guidanceId": "identify-heavy-scripts", "guidanceCategory": "performance", "summary": "Large unused and legacy JavaScript dominates transfer cost.", "evidence": "Lighthouse estimates 779 KiB unused JavaScript and 76 KiB legacy JavaScript. HAR shows 62 scripts and 2.09 MB script transfer, led by Taboola, Google Ads and Rubicon.", "artifacts": [ "evidence/lighthouse-home-summary.json", "evidence/home-summary.json" ], "suggestedFix": "Conditionally load advertising, identity and analytics bundles after consent/intent; remove legacy transforms for modern browsers.", "effort": "large", "pathId": "today" }, { "id": "F12", "severity": "medium", "confidence": "high", "principleId": "be-inclusive", "principleCheckId": "names-roles-labels", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "summary": "Some interactive controls have incomplete or mismatched accessible names.", "evidence": "Lighthouse details multiple hourly links whose aria-label omits visible label content, and the DOM probe found five links plus several buttons with no text or aria-label.", "artifacts": [ "evidence/lighthouse-home-summary.json", "evidence/home-comprehensive.json" ], "suggestedFix": "Make each accessible name include the visible time/temperature label and label icon-only links/buttons explicitly.", "effort": "small", "pathId": "today" }, { "id": "F13", "severity": "medium", "confidence": "high", "principleId": "follow-best-practices", "principleCheckId": "no-console-errors", "guidanceId": "html", "guidanceCategory": "html", "summary": "The page logs runtime and hydration errors during load.", "evidence": "Lighthouse captured React hydration error #418, FedCM NetworkError and missing en-GB translation messages in the console.", "artifacts": [ "evidence/lighthouse-home-summary.json" ], "suggestedFix": "Fix server/client markup divergence, guard FedCM failures, and supply all en-GB message keys without logging production errors.", "effort": "medium", "pathId": "today" }, { "id": "F14", "severity": "low", "confidence": "high", "principleId": "follow-best-practices", "principleCheckId": "browser-platform-hygiene", "guidanceId": "html", "guidanceCategory": "html", "summary": "Production debugging and asset hygiene is incomplete.", "evidence": "Lighthouse found a large first-party JavaScript chunk without a source map and 24 KiB minification savings.", "artifacts": [ "evidence/lighthouse-home-summary.json" ], "suggestedFix": "Publish correct production source maps to an authenticated error pipeline and fully minify shipped bundles.", "effort": "small", "pathId": "today" }, { "id": "F15", "severity": "medium", "confidence": "high", "principleId": "be-discoverable", "principleCheckId": "crawlable-and-mobile-friendly", "guidanceId": "html", "guidanceCategory": "html", "summary": "Some crawlable links use non-descriptive text.", "evidence": "Lighthouse SEO found the hourly link text “More”; the DOM also includes empty links. The viewport and real hrefs otherwise passed.", "artifacts": [ "evidence/lighthouse-home-summary.json", "evidence/home-recon.json" ], "suggestedFix": "Replace generic labels with destination-specific text such as “View full hourly forecast” and label logo/social links.", "effort": "small", "pathId": "today" }, { "id": "F16", "severity": "low", "confidence": "high", "principleId": "be-discoverable", "principleCheckId": "canonical-and-indexing-signals", "guidanceId": "html", "guidanceCategory": "html", "summary": "One hreflang entry is invalid.", "evidence": "Lighthouse reports hreflang=\"xc-MN\" as an unexpected language code. Canonical, robots and sitemap signals were otherwise present and successful.", "artifacts": [ "evidence/lighthouse-home-summary.json", "evidence/robots-sitemap.json" ], "suggestedFix": "Generate only valid BCP 47 hreflang values and validate the locale map before deployment.", "effort": "small", "pathId": "today" }, { "id": "F17", "severity": "high", "confidence": "high", "principleId": "be-private-and-secure", "principleCheckId": "secure-transport-and-headers", "guidanceId": "security", "guidanceCategory": "security", "summary": "Core browser security headers and cookie attributes are incomplete.", "evidence": "Headers probe found no CSP, X-Content-Type-Options, Referrer-Policy or Permissions-Policy; clickjacking protection was absent. Cookie probe found 15 cookies flagged insecure and extensive SameSite=None use. HTTPS and HSTS passed.", "artifacts": [ "evidence/home-headers.json", "evidence/home-cookies.json" ], "suggestedFix": "Deploy a nonce/hash CSP, nosniff, frame-ancestors, Referrer-Policy and a minimal Permissions-Policy; mark every HTTPS cookie Secure and narrow SameSite.", "effort": "large", "pathId": "today" }, { "id": "F18", "severity": "high", "confidence": "high", "principleId": "be-private-and-secure", "principleCheckId": "data-minimisation-and-third-parties", "guidanceId": "privacy", "guidanceCategory": "privacy", "summary": "The default page load has a large advertising and tracking footprint.", "evidence": "Tracker probe found 16 third-party origins and eight known trackers. HAR attributed 78 requests and 1.40 MB to third parties, including Taboola, DoubleClick, Rubicon and Amazon Ads.", "artifacts": [ "evidence/home-trackers.json", "evidence/home-summary.json", "evidence/home.har" ], "suggestedFix": "Gate non-essential vendors on consent, reduce the vendor set, batch analytics, and load third parties only where they provide visible user value.", "effort": "large", "pathId": "today" }, { "id": "F19", "severity": "medium", "confidence": "high", "principleId": "be-private-and-secure", "principleCheckId": "in-context-permissions-and-modern-auth", "guidanceId": "security", "guidanceCategory": "security", "summary": "Sign-in exposes password-only authentication with no observed passkey path.", "evidence": "The login DOM contains email/password controls and no WebAuthn/passkey affordance; no permission prompt fired on load.", "artifacts": [ "evidence/login-dom-summary.json" ], "suggestedFix": "Add passkey registration/authentication and retain password recovery as a fallback.", "effort": "large", "pathId": "login" }, { "id": "F20", "severity": "low", "confidence": "high", "principleId": "be-resilient", "principleCheckId": "offline-and-installable", "guidanceId": "flicker-free-client-side-ab-testing", "guidanceCategory": "performance", "summary": "The app-like weather experience has no active offline runtime.", "evidence": "A web app manifest exists, but the runtime probe found no controlling service worker; forecast access therefore has no demonstrated offline fallback.", "artifacts": [ "evidence/home-comprehensive.json" ], "suggestedFix": "Add a service worker with a lightweight offline shell and cache the last successful forecast with clear staleness messaging.", "effort": "large", "pathId": "today" }, { "id": "F21", "severity": "medium", "confidence": "high", "principleId": "be-trustworthy", "principleCheckId": "trustworthy-input-assistance", "guidanceId": "forms", "guidanceCategory": "forms", "summary": "The sign-in fields omit standard autocomplete tokens.", "evidence": "Login DOM shows both email and password inputs with empty autocomplete attributes; the site-search input explicitly uses autocomplete=\"off\".", "artifacts": [ "evidence/login-dom-summary.json", "evidence/login-invalid-submit.json" ], "suggestedFix": "Use autocomplete=\"username\" and autocomplete=\"current-password\"; keep search suggestions separate from browser autofill.", "effort": "trivial", "pathId": "login" }, { "id": "F22", "severity": "low", "confidence": "high", "principleId": "be-sustainable", "principleCheckId": "optimised-assets", "guidanceId": "optimize-image-priority", "guidanceCategory": "performance", "summary": "A footer raster image is oversized and inefficient.", "evidence": "Lighthouse reports the 256×256 Storm Radar PNG displayed around 70×70, with about 41 KiB potential savings; the image probe confirms a legacy PNG among otherwise SVG assets.", "artifacts": [ "evidence/lighthouse-home-summary.json", "evidence/home-images.json" ], "suggestedFix": "Serve an appropriately sized AVIF/WebP (or SVG where possible) with responsive variants.", "effort": "trivial", "pathId": "today" }, { "id": "F23", "severity": "high", "confidence": "high", "principleId": "be-sustainable", "principleCheckId": "third-party-and-media-budget", "guidanceId": "efficient-background-processing", "guidanceCategory": "performance", "summary": "Third-party script cost is disproportionate to the core forecast task.", "evidence": "HAR reports 1.40 MB third-party transfer across 78 requests; the largest scripts are recommendation and ad systems, while Lighthouse identifies their bundles as mostly unused.", "artifacts": [ "evidence/home-summary.json", "evidence/lighthouse-home-summary.json" ], "suggestedFix": "Set a third-party byte/request budget, remove low-value vendors, and defer the remainder until consent and visible need.", "effort": "large", "pathId": "today" } ], "taskList": [ { "id": "T01", "title": "Cut third-party and unused JavaScript from the critical path", "priority": 1, "findingIds": [ "F07", "F09", "F10", "F11", "F18", "F23" ], "guidanceId": "identify-heavy-scripts", "status": "open" }, { "id": "T02", "title": "Deploy CSP, defensive headers, and secure cookie attributes", "priority": 2, "findingIds": [ "F17" ], "guidanceId": "security", "status": "open" }, { "id": "T03", "title": "Stabilise and prioritise the primary forecast/LCP component", "priority": 3, "findingIds": [ "F07", "F08", "F10" ], "guidanceId": "performance", "status": "open" }, { "id": "T04", "title": "Fix interactive accessible names and descriptive links", "priority": 4, "findingIds": [ "F12", "F15" ], "guidanceId": "accessibility", "status": "open" }, { "id": "T05", "title": "Reduce first-visit and advertising interruption", "priority": 5, "findingIds": [ "F05", "F06" ], "guidanceId": "declarative-dialog-popover-control", "status": "open" }, { "id": "T06", "title": "Add preference-driven dark mode", "priority": 6, "findingIds": [ "F01" ], "guidanceId": "dark-mode", "status": "open" }, { "id": "T07", "title": "Modernise authentication with autofill and passkeys", "priority": 7, "findingIds": [ "F19", "F21" ], "guidanceId": "forms", "status": "open" }, { "id": "T08", "title": "Resolve production console, source-map, and locale errors", "priority": 8, "findingIds": [ "F13", "F14" ], "guidanceId": "html", "status": "open" }, { "id": "T09", "title": "Add resilient offline access to the last forecast", "priority": 9, "findingIds": [ "F20" ], "guidanceId": "flicker-free-client-side-ab-testing", "status": "open" }, { "id": "T10", "title": "Fix hreflang and image delivery", "priority": 10, "findingIds": [ "F16", "F22" ], "guidanceId": "html", "status": "open" }, { "id": "T11", "title": "Progressively enhance navigation motion and anchored overlays", "priority": 11, "findingIds": [ "F02", "F03", "F04" ], "guidanceId": "same-document-transitions", "status": "open" } ], "budget": { "pathCount": 6, "auditPasses": 1 }, "agent": "pi", "runId": "2026-07-24T08-46-49-037Z" }