{ "url": "https://nlab.itmedia.co.jp", "auditedAt": "2026-07-23T08:36:11.395Z", "mode": "report", "status": "completed", "statusDetail": "Coverage complete: all 58 catalog checks received one conclusive outcome. Scope covers five representative page archetypes/conditions; search, login/member-only, subscription and destructive account flows were not exercised because they were not part of the anonymous primary reading journey.", "page": { "appType": "mpa", "framework": "Astro-generated/server-rendered MPA with third-party consent, advertising and analytics integrations", "notes": "Public Japanese news publication. Homepage, category, standard article, research article and 404 templates sampled. Not covered: every editorial category (shared listing template), authenticated/member surfaces, login and purchase/account journeys." }, "evidenceUsed": [ "screenshot", "dom", "evaluate-probe", "layout-metrics", "trace", "har", "discoverability", "headers", "cookies", "trackers", "secrets", "images", "heap-summary", "Lighthouse", "Modern Web Guidance" ], "guidanceConsulted": [ "dark-mode", "component-specific-light-dark-theme", "accessibility", "adapt-scrollbar-to-contrast-preferences", "same-document-transitions", "cross-document-transitions", "group-element-transitions", "faster-spa-view-transitions", "scrollytelling", "parallax-scroll-effects", "scroll-entry-exit-effects", "carousel-slide-effects", "physics-based-easing", "individual-transform-properties", "animate-element-entry-exit", "animate-to-from-top-layer", "animate-to-intrinsic-sizes", "dynamic-sibling-animations", "interactive-content-reveal", "pull-to-reveal", "swipe-to-remove", "shrinking-header-on-scroll", "scroll-progress-indicator", "scroll-position-aware-elements", "scroll-snap-realtime-feedback", "scroll-snap-state-sync", "scroll-target-on-load", "soft-edge-content-fade", "scrollability-affordance-hints", "anchor-positioning-tab-underline", "position-aware-tooltips", "interest-triggered-tooltips", "interest-triggered-action-previews", "directional-navigation-transitions", "carousel-snap-highlights", "navigation-drawer", "stack-drill-down", "persistent-app-tours", "persistent-toast-notifications", "light-dismiss-a-dialog", "platform-controls-dismiss-dialog", "declarative-dialog-popover-control", "animated-select-picker", "branded-select-styling", "brand-consistent-forms", "custom-select-picker-layouts", "rich-media-picker", "complex-shapes", "shaped-cutouts", "overflow-clipping-control", "visually-texture-content", "apply-webgl-shaders", "interactive-content-in-3d-scenes", "highlight-text-ranges", "prevent-text-wrapping", "customize-scrollbar-color-and-thickness", "export-html-media-from-canvas", "fluid-scaling", "calculate-with-intrinsic-sizes", "css-layout", "size-aware-styling", "content-based-styling", "child-state-based-styling", "design-token-reactivity", "dynamic-sibling-styling", "form-fields-automatically-fit-contents", "improve-text-layout-and-legibility", "forms", "accessible-error-announcement", "required-field-feedback", "validate-input-after-interaction", "identify-inp-causes", "schedule-tasks-by-priority", "optimize-preload-priority", "improve-next-page-load-performance", "interactions-in-complex-layouts", "performance", "visually-stable-font-fallbacks", "break-up-long-tasks", "identify-heavy-scripts", "optimize-script-priority", "defer-rendering-heavy-content", "defer-work-until-scroll-ends", "optimize-image-priority", "conditional-async-dependencies", "expose-canvas-content-to-browser-features", "move-dom-element-without-losing-state", "precise-text-alignment", "visually-stable-mixed-fonts", "css", "html", "reduce-style-repetition", "security", "privacy", "batch-analytics-events", "full-session-analytics", "calculate-total-foreground-time", "passkeys", "passkey-registration", "passkey-authentication", "passkey-reauthentication", "passkey-conditional-create", "passkey-management", "flicker-free-client-side-ab-testing", "consistent-cross-document-transitions", "stabilize-reactive-state", "resilient-context-menus-and-nested-dropdowns", "persistent-top-layer-ui", "detect-initial-visibility-state", "sequence-distributed-events", "translator", "language-detection", "support-global-calendar-systems", "capture-location-agnostic-data", "format-human-readable-durations", "manage-recurring-intervals", "calculate-event-differentials", "coordinate-global-events", "model-partial-time-concepts", "search-hidden-content", "select-menu-interaction", "style-parent-with-has", "autofill-address-form", "autofill-payment-form", "autofill-sign-in-form", "autofill-sign-up-form", "autofill-highlight-inputs", "deliver-optimized-decorative-images", "resolution-optimized-pseudo-elements", "deprioritize-background-fetches", "efficient-background-processing", "webmcp", "agentic-forms", "agentic-javascript-tools", "language-model", "summarizer" ], "artifacts": [ { "type": "screenshot", "path": "evidence/article-desktop.png", "caption": "article desktop", "findingIds": [ "F04", "F08" ] }, { "type": "screenshot", "path": "evidence/article-discoverability-crawler.png", "caption": "article discoverability crawler", "condition": "JavaScript disabled crawler view", "findingIds": [] }, { "type": "screenshot", "path": "evidence/article-discoverability-rendered.png", "caption": "article discoverability rendered", "findingIds": [] }, { "type": "discoverability", "path": "evidence/article-discoverability.json", "caption": "article discoverability", "findingIds": [] }, { "type": "layout", "path": "evidence/article-layout.json", "caption": "article layout", "findingIds": [ "F11" ] }, { "type": "other", "path": "evidence/article-probe.json", "caption": "article probe", "findingIds": [] }, { "type": "layout", "path": "evidence/category-layout.json", "caption": "category layout", "findingIds": [ "F11" ] }, { "type": "screenshot", "path": "evidence/category-mobile.png", "caption": "category mobile", "condition": "viewport: 360x800", "findingIds": [ "F04", "F23" ] }, { "type": "other", "path": "evidence/coverage-manifest.json", "caption": "coverage manifest", "findingIds": [] }, { "type": "other", "path": "evidence/guidance-ids.txt", "caption": "guidance ids", "findingIds": [] }, { "type": "other", "path": "evidence/guidance-list.json", "caption": "guidance list", "findingIds": [] }, { "type": "other", "path": "evidence/guidance-retrieved.md", "caption": "guidance retrieved", "findingIds": [] }, { "type": "other", "path": "evidence/guidance-search.json", "caption": "guidance search", "findingIds": [] }, { "type": "other", "path": "evidence/home-cookies.json", "caption": "home cookies", "findingIds": [ "F19" ] }, { "type": "screenshot", "path": "evidence/home-dark.png", "caption": "home dark", "condition": "prefers-color-scheme: dark", "findingIds": [ "F01" ] }, { "type": "screenshot", "path": "evidence/home-desktop.png", "caption": "home desktop", "findingIds": [ "F04", "F05", "F06", "F08", "F15", "F18", "F21", "F24" ] }, { "type": "screenshot", "path": "evidence/home-discoverability-crawler.png", "caption": "home discoverability crawler", "condition": "JavaScript disabled crawler view", "findingIds": [] }, { "type": "screenshot", "path": "evidence/home-discoverability-rendered.png", "caption": "home discoverability rendered", "findingIds": [] }, { "type": "discoverability", "path": "evidence/home-discoverability.json", "caption": "home discoverability", "findingIds": [] }, { "type": "dom", "path": "evidence/home-dom.json", "caption": "home dom", "findingIds": [ "F03" ] }, { "type": "other", "path": "evidence/home-headers.json", "caption": "home headers", "findingIds": [ "F19", "F22" ] }, { "type": "heap", "path": "evidence/home-heap-post-scroll.json", "caption": "home heap post scroll", "findingIds": [] }, { "type": "heap", "path": "evidence/home-heap.json", "caption": "home heap", "findingIds": [] }, { "type": "other", "path": "evidence/home-images.json", "caption": "home images", "findingIds": [ "F14", "F25" ] }, { "type": "layout", "path": "evidence/home-layout-mobile.json", "caption": "home layout mobile", "condition": "viewport: 360x800", "findingIds": [ "F17" ] }, { "type": "screenshot", "path": "evidence/home-mobile.png", "caption": "home mobile", "condition": "viewport: 360x800", "findingIds": [ "F04", "F23", "F24" ] }, { "type": "other", "path": "evidence/home-probe.json", "caption": "home probe", "findingIds": [ "F01", "F27", "F02", "F03", "F05", "F07", "F16" ] }, { "type": "other", "path": "evidence/home-recon.json", "caption": "home recon", "findingIds": [] }, { "type": "other", "path": "evidence/home-secrets.json", "caption": "home secrets", "findingIds": [] }, { "type": "har-summary", "path": "evidence/home-summary.json", "caption": "home summary", "findingIds": [ "F12", "F13", "F20", "F26" ] }, { "type": "trace-summary", "path": "evidence/home-trace-summary.json", "caption": "home trace summary", "findingIds": [ "F10" ] }, { "type": "trace", "path": "evidence/home-trace.json", "caption": "home trace", "findingIds": [ "F10" ] }, { "type": "other", "path": "evidence/home-trackers.json", "caption": "home trackers", "findingIds": [ "F20", "F26" ] }, { "type": "har", "path": "evidence/home.har", "caption": "home", "findingIds": [ "F12", "F20" ] }, { "type": "lighthouse", "path": "evidence/lighthouse-home.json", "caption": "lighthouse home", "findingIds": [ "F01", "F27", "F07", "F10", "F11", "F12", "F13", "F14", "F15", "F16", "F17", "F18", "F21" ] }, { "type": "screenshot", "path": "evidence/not-found.png", "caption": "not found", "findingIds": [ "F06", "F09" ] }, { "type": "screenshot", "path": "evidence/research-article.png", "caption": "research article", "findingIds": [] }, { "type": "other", "path": "evidence/site-files.json", "caption": "site files", "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", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "The prefers-color-scheme: dark screenshot is pixel-identical to the light capture, the live CSS probe found no prefers-color-scheme or forced-colors/prefers-contrast rules, and Lighthouse also found default-state contrast failures.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F01" ], "artifacts": [ "evidence/home-dark.png", "evidence/home-probe.json", "evidence/lighthouse-home.json" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-reduced-motion", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Reduced-motion emulation reported zero active animations, so no nonessential motion persisted.", "pathIds": [ "home" ], "status": "pass", "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-contrast", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "The live stylesheet probe found no prefers-contrast or forced-colors handling, while Lighthouse found baseline color-contrast failures, increasing the risk that metadata and controls remain hard to perceive.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F27" ], "artifacts": [ "evidence/home-probe.json", "evidence/lighthouse-home.json" ] }, { "principleId": "implement-natural-interactions", "checkId": "view-transitions", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "The stylesheet probe found no view-transition rules on this multi-page news site; route changes therefore use abrupt document swaps.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F02" ], "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "implement-natural-interactions", "checkId": "scroll-driven-animations", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "CSS inspection found scroll-snap but no script-driven scroll-animation evidence or active animations; the sampled pages do not use scrollytelling effects.", "pathIds": [ "home" ], "status": "pass", "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "implement-natural-interactions", "checkId": "physical-gestures", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "CSS inspection found native scroll-snap and no evidence of custom pointer-driven gesture handling on the sampled reading paths.", "pathIds": [ "home" ], "status": "pass", "artifacts": [ "evidence/home-probe.json" ] }, { "principleId": "provide-guided-navigation", "checkId": "scroll-state-aware-chrome", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "The DOM/CSS probe found fixed/sticky chrome but no scroll-state container queries or scroll-timeline behavior.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F03" ], "artifacts": [ "evidence/home-probe.json", "evidence/home-dom.json" ] }, { "principleId": "provide-guided-navigation", "checkId": "anchored-positioning", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "No site-owned tooltip, popover or anchored menu was present on the representative paths.", "status": "not-applicable", "reason": "No site-owned tooltip, popover or anchored menu was present on the representative paths." }, { "principleId": "provide-guided-navigation", "checkId": "directs-attention", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Visible category navigation, descriptive article links, canonical article headings and breadcrumb structured data provide clear navigation context.", "pathIds": [ "home" ], "status": "pass", "artifacts": [ "evidence/home-recon.json", "evidence/article-probe.json" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "no-intrusive-interruptions", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Desktop and mobile screenshots show a full-page consent wall plus a push-notification prompt layered over it before interaction; on mobile the notification panel covers the consent title and content.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F04" ], "artifacts": [ "evidence/home-desktop.png", "evidence/home-mobile.png", "evidence/category-mobile.png", "evidence/article-desktop.png" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "semantic-dismissible-primitives", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "The rendered DOM exposes consent headings but the semantic probe found 0 dialog, 0 popover and 0 details elements while six fixed/sticky elements were present.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F05" ], "artifacts": [ "evidence/home-probe.json", "evidence/home-desktop.png" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "reduced-chrome", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Across homepage, category, article and 404 screenshots, the actual content is dimmed and mostly hidden behind consent and notification UI.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F06" ], "artifacts": [ "evidence/home-desktop.png", "evidence/not-found.png" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "responsive-no-horizontal-scroll", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Home, category and article layout probes at 360px all reported 0px horizontal overflow and a viewport meta tag.", "pathIds": [ "home" ], "status": "pass", "artifacts": [ "evidence/home-layout-mobile.json", "evidence/category-layout.json", "evidence/article-layout.json" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "component-level-responsiveness", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "The same listing/article surfaces reflowed to 360px without overflow, demonstrating working component adaptation across sampled widths.", "pathIds": [ "home" ], "status": "pass", "artifacts": [ "evidence/home-mobile.png", "evidence/category-mobile.png", "evidence/home-layout-mobile.json" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "input-modality-aware", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "A focused primary anchor computed to outline-style none with no box shadow; Lighthouse failed target-size.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F07" ], "artifacts": [ "evidence/home-probe.json", "evidence/lighthouse-home.json" ] }, { "principleId": "support-core-task-success", "checkId": "clear-purpose-and-primary-action", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "All first-load screenshots foreground consent and push prompts rather than the page purpose, headline or next reading action.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F08" ], "artifacts": [ "evidence/home-desktop.png", "evidence/article-desktop.png" ] }, { "principleId": "support-core-task-success", "checkId": "primary-flow-completion", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "All first-load screenshots foreground consent and push prompts rather than the page purpose, headline or next reading action.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F08" ], "artifacts": [ "evidence/home-desktop.png", "evidence/article-desktop.png" ] }, { "principleId": "support-core-task-success", "checkId": "clear-system-state-and-recovery", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "The 404 page contains recovery content, but the screenshot shows it dimmed beneath the same two overlays, preventing immediate recovery.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F09" ], "artifacts": [ "evidence/not-found.png" ] }, { "principleId": "be-fast-and-stable", "checkId": "good-core-web-vitals", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Lighthouse measured LCP 14.1 s, CLS 0.172 and performance 0.55; the first-party trace measured LCP 4.04 s.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F10" ], "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-trace-summary.json", "evidence/home-trace.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "visual-stability", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Mobile layout captures measured CLS 0.203 on the category page and 0.117 on the article; Lighthouse measured 0.172 on home.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F11" ], "artifacts": [ "evidence/category-layout.json", "evidence/article-layout.json", "evidence/lighthouse-home.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-main-thread", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "The first-party trace recorded one 79.9ms long task and 29.9ms total blocking time; mobile layout probes saw one bounded long task per path.", "pathIds": [ "home" ], "status": "pass", "artifacts": [ "evidence/home-trace-summary.json", "evidence/home-layout-mobile.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-resource-delivery", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "The HAR recorded 94 requests and 2.11 MB, including 1.95 MB third-party bytes; Lighthouse estimated 950 ms render-blocking savings and 610 KiB cache savings.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F12" ], "artifacts": [ "evidence/home-summary.json", "evidence/home.har", "evidence/lighthouse-home.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "trim-unused-and-duplicate-code", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Lighthouse estimated 429 KiB unused JavaScript and 35 KiB unused CSS; 32 scripts transferred 1.58 MB in the HAR.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F13" ], "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-summary.json" ] }, { "principleId": "be-inclusive", "checkId": "names-roles-labels", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "The image probe found 97 of 100 images without alt; Lighthouse failed image-alt, button-name and link-name.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F14" ], "artifacts": [ "evidence/home-images.json", "evidence/lighthouse-home.json" ] }, { "principleId": "be-inclusive", "checkId": "sufficient-contrast", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Lighthouse color-contrast audit failed on the rendered homepage.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F15" ], "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-desktop.png" ] }, { "principleId": "be-inclusive", "checkId": "structure-and-focus", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Lighthouse failed heading-order; the DOM probe found no main landmark and a heading sequence beginning H3, H2 with multiple consent H1s injected alongside page headings.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F16" ], "artifacts": [ "evidence/home-probe.json", "evidence/lighthouse-home.json" ] }, { "principleId": "be-inclusive", "checkId": "legible-text", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Underlying Japanese headline and body text uses readable sizing and wrapping; all narrow layouts reflowed without clipping or horizontal overflow.", "pathIds": [ "home" ], "status": "pass", "artifacts": [ "evidence/category-mobile.png", "evidence/article-layout.json" ] }, { "principleId": "be-inclusive", "checkId": "zoom-reflow-targets-and-media", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Lighthouse failed meta-viewport because maximum-scale is 1 and failed target-size, although 360px layouts did avoid horizontal overflow.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F17" ], "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-layout-mobile.json" ] }, { "principleId": "follow-best-practices", "checkId": "no-console-errors", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Lighthouse did not report the console-errors audit among failed audits during the sampled load.", "pathIds": [ "home" ], "status": "pass", "artifacts": [ "evidence/lighthouse-home.json" ] }, { "principleId": "follow-best-practices", "checkId": "sound-document-and-assets", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "The server HTML has an HTML5 doctype/UTF-8 metadata, and the image probe found all 100 images had explicit dimensions, limiting aspect-ratio instability.", "pathIds": [ "home" ], "status": "pass", "artifacts": [ "evidence/home-dom.json", "evidence/home-images.json" ] }, { "principleId": "follow-best-practices", "checkId": "browser-platform-hygiene", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Lighthouse failed notification-on-start and inspector-issues.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F18" ], "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-desktop.png" ] }, { "principleId": "be-discoverable", "checkId": "title-and-description", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Homepage and article probes found descriptive, route-specific titles and meta descriptions.", "pathIds": [ "home" ], "status": "pass", "artifacts": [ "evidence/home-recon.json", "evidence/article-probe.json" ] }, { "principleId": "be-discoverable", "checkId": "crawlable-and-mobile-friendly", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "All sampled anchors had hrefs, viewport metadata was present and robots.txt allows crawling while naming the sitemap.", "pathIds": [ "home" ], "status": "pass", "artifacts": [ "evidence/home-probe.json", "evidence/site-files.json" ] }, { "principleId": "be-discoverable", "checkId": "canonical-and-indexing-signals", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Pages returned 200, expose canonical URLs, robots allows crawling and the declared sitemap index was fetched successfully during recon.", "pathIds": [ "home" ], "status": "pass", "artifacts": [ "evidence/home-recon.json", "evidence/article-probe.json", "evidence/site-files.json" ] }, { "principleId": "be-discoverable", "checkId": "structured-and-shareable-metadata", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "The article exposes NewsArticle and BreadcrumbList JSON-LD plus matching Open Graph title, description, URL and image.", "pathIds": [ "home" ], "status": "pass", "artifacts": [ "evidence/article-probe.json" ] }, { "principleId": "be-private-and-secure", "checkId": "secure-transport-and-headers", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "HTTPS and nosniff are present, but headers evidence found no CSP or HSTS; cookie evidence found 10 cookies flagged insecure, including several without Secure and many SameSite=None.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F19" ], "artifacts": [ "evidence/home-headers.json", "evidence/home-cookies.json" ] }, { "principleId": "be-private-and-secure", "checkId": "data-minimisation-and-third-parties", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Tracker evidence found 27 third-party origins and seven known trackers; HAR attributed 75 of 94 requests and 1.95 of 2.11 MB to third parties before consent.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F20" ], "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", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "The initial screenshot shows a notification-acquisition overlay before user intent, and Lighthouse failed notification-on-start.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F21" ], "artifacts": [ "evidence/home-desktop.png", "evidence/lighthouse-home.json" ] }, { "principleId": "be-private-and-secure", "checkId": "defensive-browser-policies", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Headers evidence found no HSTS, Referrer-Policy, Permissions-Policy or CSP; X-Frame-Options SAMEORIGIN was present.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F22" ], "artifacts": [ "evidence/home-headers.json" ] }, { "principleId": "be-resilient", "checkId": "progressive-enhancement", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Discoverability captures found non-shell server HTML (232-244KB) with substantial text and metadata on home and article, so core content is server delivered rather than an empty JS mount.", "pathIds": [ "home" ], "status": "pass", "artifacts": [ "evidence/home-discoverability.json", "evidence/article-discoverability.json" ] }, { "principleId": "be-resilient", "checkId": "resilient-runtime-behaviour", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "At 360x800 the notification panel overlaps and clips the consent experience, hiding its title and upper controls.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F23" ], "artifacts": [ "evidence/category-mobile.png", "evidence/home-mobile.png" ] }, { "principleId": "be-resilient", "checkId": "offline-and-installable", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "This public news publication is document-oriented rather than an installable application; offline installation is not a core stated journey.", "status": "not-applicable", "reason": "This public news publication is document-oriented rather than an installable application; offline installation is not a core stated journey." }, { "principleId": "be-resilient", "checkId": "network-and-http-failure-states", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "The unknown URL rendered a dedicated Japanese 404 explanation and recovery link content rather than a blank shell.", "pathIds": [ "home" ], "status": "pass", "artifacts": [ "evidence/not-found.png" ] }, { "principleId": "be-internationalised", "checkId": "lang-dir-and-logical-properties", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "All sampled documents declare lang=ja, matching the Japanese content and reading direction.", "pathIds": [ "home" ], "status": "pass", "artifacts": [ "evidence/home-recon.json", "evidence/article-probe.json" ] }, { "principleId": "be-internationalised", "checkId": "locale-aware-data", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Article structured data exposes machine-readable ISO publication/modification values while visible content is localized for the Japanese audience.", "pathIds": [ "home" ], "status": "pass", "artifacts": [ "evidence/article-probe.json" ] }, { "principleId": "be-internationalised", "checkId": "time-zone-correctness", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "NewsArticle metadata uses explicit +0900 offsets, avoiding ambiguous stored publication times.", "pathIds": [ "home" ], "status": "pass", "artifacts": [ "evidence/article-probe.json" ] }, { "principleId": "be-trustworthy", "checkId": "no-dark-patterns", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Initial screenshots show primary Consent and Manage options buttons but no visible Reject all action, while a second unsolicited notification panel competes above it.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F24" ], "artifacts": [ "evidence/home-desktop.png", "evidence/home-mobile.png" ] }, { "principleId": "be-trustworthy", "checkId": "humane-error-handling", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "No user-authored form was present in the sampled public reading journeys.", "status": "not-applicable", "reason": "No user-authored form was present in the sampled public reading journeys." }, { "principleId": "be-trustworthy", "checkId": "trustworthy-input-assistance", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "No address, payment, sign-in or sign-up fields were present in the sampled public reading journeys.", "status": "not-applicable", "reason": "No address, payment, sign-in or sign-up fields were present in the sampled public reading journeys." }, { "principleId": "be-trustworthy", "checkId": "safe-commercial-and-account-flows", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Initial screenshots show primary Consent and Manage options buttons but no visible Reject all action, while a second unsolicited notification panel competes above it.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F24" ], "artifacts": [ "evidence/home-desktop.png", "evidence/home-mobile.png" ] }, { "principleId": "be-sustainable", "checkId": "optimised-assets", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "The image probe found 37 legacy-format images, no detected modern-format images and one oversized image; the sampled elements generally lacked srcset.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F25" ], "artifacts": [ "evidence/home-images.json" ] }, { "principleId": "be-sustainable", "checkId": "no-wasteful-work", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "HAR measured 1.95 MB third-party transfer out of 2.11 MB total; ad code alone included a 642 KiB script and trackers reported 27 third-party origins.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F26" ], "artifacts": [ "evidence/home-summary.json", "evidence/home-trackers.json" ] }, { "principleId": "be-sustainable", "checkId": "third-party-and-media-budget", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "HAR measured 1.95 MB third-party transfer out of 2.11 MB total; ad code alone included a 642 KiB script and trackers reported 27 third-party origins.", "pathIds": [ "home" ], "status": "issues", "findingIds": [ "F26" ], "artifacts": [ "evidence/home-summary.json", "evidence/home-trackers.json" ] }, { "principleId": "be-agent-ready", "checkId": "structured-agent-capabilities", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "No declared agent-facing transactional capability exists; emerging WebMCP exposure is not required for this public news reading surface.", "status": "not-applicable", "reason": "No declared agent-facing transactional capability exists; emerging WebMCP exposure is not required for this public news reading surface." }, { "principleId": "be-agent-ready", "checkId": "on-device-inference", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "No on-device inference use case is required to complete the core news-reading journey.", "status": "not-applicable", "reason": "No on-device inference use case is required to complete the core news-reading journey." }, { "principleId": "be-memory-efficient", "checkId": "no-leak-under-repeated-interaction", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "After ten full-page scroll down/up cycles, heap node count fell by 56 and retained self-size changed only +47,884 bytes (+0.12%), with object/closure populations flat.", "pathIds": [ "home" ], "status": "pass", "artifacts": [ "evidence/home-heap.json", "evidence/home-heap-post-scroll.json" ] }, { "principleId": "be-memory-efficient", "checkId": "bounded-footprint", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "The sampled content-heavy home page retained 38.7MB in the heap summary; the footprint remained bounded after repeated scrolling.", "pathIds": [ "home" ], "status": "pass", "artifacts": [ "evidence/home-heap.json", "evidence/home-heap-post-scroll.json" ] }, { "principleId": "be-memory-efficient", "checkId": "no-detached-dom-or-unbounded-listeners", "confidence": "high", "method": "Planned model judgement using the check-specific screenshot, DOM/evaluate, layout, trace, HAR, Lighthouse, privacy, discoverability, image or heap evidence captured for representative paths.", "evidence": "Before/after summaries showed closures decreased 26 and objects decreased 39 after repeated scrolling, with no growth signal in top constructor populations.", "pathIds": [ "home" ], "status": "pass", "artifacts": [ "evidence/home-heap.json", "evidence/home-heap-post-scroll.json" ] } ], "principleOutcomes": [ { "principleId": "respect-user-preferences", "expectation": "default", "status": "issues", "findingIds": [ "F01", "F27" ] }, { "principleId": "implement-natural-interactions", "expectation": "default", "status": "issues", "findingIds": [ "F02" ] }, { "principleId": "provide-guided-navigation", "expectation": "default", "status": "issues", "findingIds": [ "F03" ] }, { "principleId": "maximize-content-reduce-noise", "expectation": "default", "status": "issues", "findingIds": [ "F04", "F05", "F06" ] }, { "principleId": "adapt-to-the-form-factor", "expectation": "default", "status": "issues", "findingIds": [ "F07" ] }, { "principleId": "support-core-task-success", "expectation": "default", "status": "issues", "findingIds": [ "F08", "F09" ] }, { "principleId": "be-fast-and-stable", "expectation": "default", "status": "issues", "findingIds": [ "F10", "F11", "F12", "F13" ] }, { "principleId": "be-inclusive", "expectation": "default", "status": "issues", "findingIds": [ "F14", "F15", "F16", "F17" ] }, { "principleId": "follow-best-practices", "expectation": "default", "status": "issues", "findingIds": [ "F18" ] }, { "principleId": "be-discoverable", "expectation": "default", "status": "pass" }, { "principleId": "be-private-and-secure", "expectation": "default", "status": "issues", "findingIds": [ "F19", "F20", "F21", "F22" ] }, { "principleId": "be-resilient", "expectation": "contextual", "status": "issues", "findingIds": [ "F23" ] }, { "principleId": "be-internationalised", "expectation": "contextual", "status": "pass" }, { "principleId": "be-trustworthy", "expectation": "default", "status": "issues", "findingIds": [ "F24" ] }, { "principleId": "be-sustainable", "expectation": "contextual", "status": "issues", "findingIds": [ "F25", "F26" ] }, { "principleId": "be-agent-ready", "expectation": "contextual", "status": "not-applicable", "reason": "No declared agent-facing transactional capability exists; emerging WebMCP exposure is not required for this public news reading surface. No on-device inference use case is required to complete the core news-reading journey." }, { "principleId": "be-memory-efficient", "expectation": "default", "status": "pass" } ], "paths": [ { "id": "home", "description": "Homepage and primary news-discovery entry point; tested at desktop, mobile, dark, reduced-motion, crawler, network, performance, privacy, accessibility and memory conditions.", "url": "https://nlab.itmedia.co.jp/", "conditions": [ "desktop 780x493", "mobile 360x800", "prefers-color-scheme: dark", "prefers-reduced-motion: reduce", "JavaScript disabled crawler view", "repeated scroll x10" ], "result": "issues" }, { "id": "category", "description": "News category listing, representing section/list templates and mobile stability.", "url": "https://nlab.itmedia.co.jp/cont/cont_category/news/", "conditions": [ "mobile 360x800" ], "result": "issues" }, { "id": "article", "description": "Standard editorial article, representing the core reading journey, metadata and server-rendering.", "url": "https://nlab.itmedia.co.jp/cont/articles/3938470/", "conditions": [ "desktop", "mobile 360x800", "JavaScript disabled crawler view" ], "result": "issues" }, { "id": "research-article", "description": "Research/product-style article, sampled because it is a distinct content family and template.", "url": "https://nlab.itmedia.co.jp/research/articles/3947887/", "conditions": [ "desktop" ], "result": "issues" }, { "id": "not-found", "description": "Unknown URL to inspect HTTP/error recovery presentation.", "url": "https://nlab.itmedia.co.jp/this-page-does-not-exist-audit", "conditions": [ "desktop" ], "result": "issues" } ], "findings": [ { "severity": "medium", "summary": "The site does not adapt its palette to dark or increased-contrast preferences.", "principleId": "respect-user-preferences", "principleCheckId": "respects-color-scheme", "guidanceId": "dark-mode", "evidence": "The prefers-color-scheme: dark screenshot is pixel-identical to the light capture, the live CSS probe found no prefers-color-scheme or forced-colors/prefers-contrast rules, and Lighthouse also found default-state contrast failures.", "artifacts": [ "evidence/home-dark.png", "evidence/home-probe.json", "evidence/lighthouse-home.json" ], "suggestedFix": "Declare color-scheme and introduce preference-driven semantic surface/text tokens using prefers-color-scheme or light-dark(); verify controls under forced colors.", "effort": "medium", "id": "F01", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "medium", "summary": "The site does not explicitly preserve UI visibility under increased-contrast preferences.", "principleId": "respect-user-preferences", "principleCheckId": "respects-contrast", "guidanceId": "adapt-scrollbar-to-contrast-preferences", "evidence": "The live stylesheet probe found no prefers-contrast or forced-colors handling, while Lighthouse found baseline color-contrast failures, increasing the risk that metadata and controls remain hard to perceive.", "artifacts": [ "evidence/home-probe.json", "evidence/lighthouse-home.json" ], "suggestedFix": "Add forced-colors and prefers-contrast treatments for essential controls and text, avoid suppressing system colors, and verify the full consent/navigation UI in high-contrast mode.", "effort": "small", "id": "F27", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "low", "summary": "Page and state changes have no View Transition treatment.", "principleId": "implement-natural-interactions", "principleCheckId": "view-transitions", "guidanceId": "cross-document-transitions", "evidence": "The stylesheet probe found no view-transition rules on this multi-page news site; route changes therefore use abrupt document swaps.", "artifacts": [ "evidence/home-probe.json" ], "suggestedFix": "Add cross-document View Transitions for same-origin article and category navigation, with reduced-motion handling.", "effort": "medium", "id": "F02", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "low", "summary": "Persistent page chrome does not expose scroll-state-aware behavior.", "principleId": "provide-guided-navigation", "principleCheckId": "scroll-state-aware-chrome", "guidanceId": "shrinking-header-on-scroll", "evidence": "The DOM/CSS probe found fixed/sticky chrome but no scroll-state container queries or scroll-timeline behavior.", "artifacts": [ "evidence/home-probe.json", "evidence/home-dom.json" ], "suggestedFix": "Use scroll-state container queries or a lightweight progress/shrinking-header treatment to orient readers on long pages.", "effort": "medium", "id": "F03", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "critical", "summary": "Two simultaneous unsolicited overlays obscure the primary content on every sampled path.", "principleId": "maximize-content-reduce-noise", "principleCheckId": "no-intrusive-interruptions", "guidanceId": "light-dismiss-a-dialog", "evidence": "Desktop and mobile screenshots show a full-page consent wall plus a push-notification prompt layered over it before interaction; on mobile the notification panel covers the consent title and content.", "artifacts": [ "evidence/home-desktop.png", "evidence/home-mobile.png", "evidence/category-mobile.png", "evidence/article-desktop.png" ], "suggestedFix": "Do not request notifications on load. Consolidate consent into one accessible, non-overlapping surface with equal accept/reject controls and defer nonessential prompts until a user asks.", "effort": "medium", "id": "F04", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "high", "summary": "Overlay experiences are not represented by native dialog/popover semantics.", "principleId": "maximize-content-reduce-noise", "principleCheckId": "semantic-dismissible-primitives", "guidanceId": "declarative-dialog-popover-control", "evidence": "The rendered DOM exposes consent headings but the semantic probe found 0 dialog, 0 popover and 0 details elements while six fixed/sticky elements were present.", "artifacts": [ "evidence/home-probe.json", "evidence/home-desktop.png" ], "suggestedFix": "Use a modal dialog for required consent decisions and a popover for transient prompts, with native focus management and light-dismiss where appropriate.", "effort": "medium", "id": "F05", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "high", "summary": "Advertising and prompt chrome dominates the first viewport.", "principleId": "maximize-content-reduce-noise", "principleCheckId": "reduced-chrome", "guidanceId": "light-dismiss-a-dialog", "evidence": "Across homepage, category, article and 404 screenshots, the actual content is dimmed and mostly hidden behind consent and notification UI.", "artifacts": [ "evidence/home-desktop.png", "evidence/not-found.png" ], "suggestedFix": "Reserve the first viewport for editorial purpose and content; remove the notification nag and reduce consent chrome to the minimum legally required.", "effort": "medium", "id": "F06", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "high", "summary": "Keyboard focus and touch-target affordances are insufficient.", "principleId": "adapt-to-the-form-factor", "principleCheckId": "input-modality-aware", "guidanceId": "accessibility", "evidence": "A focused primary anchor computed to outline-style none with no box shadow; Lighthouse failed target-size.", "artifacts": [ "evidence/home-probe.json", "evidence/lighthouse-home.json" ], "suggestedFix": "Add a strong :focus-visible ring and increase control target boxes/spacing to at least the recommended touch size.", "effort": "small", "id": "F07", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "critical", "summary": "The primary reading journey is blocked before users can understand or use the page.", "principleId": "support-core-task-success", "principleCheckId": "clear-purpose-and-primary-action", "guidanceId": "scrollability-affordance-hints", "evidence": "All first-load screenshots foreground consent and push prompts rather than the page purpose, headline or next reading action.", "artifacts": [ "evidence/home-desktop.png", "evidence/article-desktop.png" ], "suggestedFix": "Make the article/listing purpose and primary reading action visible immediately; defer notification acquisition and make consent non-obscuring where legally possible.", "effort": "medium", "id": "F08", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "high", "summary": "System and error states are obscured by unrelated prompts.", "principleId": "support-core-task-success", "principleCheckId": "clear-system-state-and-recovery", "guidanceId": "persistent-toast-notifications", "evidence": "The 404 page contains recovery content, but the screenshot shows it dimmed beneath the same two overlays, preventing immediate recovery.", "artifacts": [ "evidence/not-found.png" ], "suggestedFix": "Suppress marketing/notification prompts on error pages and keep recovery links immediately operable.", "effort": "small", "id": "F09", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "high", "summary": "Load performance misses the Core Web Vitals bar.", "principleId": "be-fast-and-stable", "principleCheckId": "good-core-web-vitals", "guidanceId": "performance", "evidence": "Lighthouse measured LCP 14.1 s, CLS 0.172 and performance 0.55; the first-party trace measured LCP 4.04 s.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-trace-summary.json", "evidence/home-trace.json" ], "suggestedFix": "Prioritize the real LCP resource, remove early third-party competition, and reserve late content space.", "effort": "large", "id": "F10", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "high", "summary": "Category and article templates shift visibly after load.", "principleId": "be-fast-and-stable", "principleCheckId": "visual-stability", "guidanceId": "visually-stable-font-fallbacks", "evidence": "Mobile layout captures measured CLS 0.203 on the category page and 0.117 on the article; Lighthouse measured 0.172 on home.", "artifacts": [ "evidence/category-layout.json", "evidence/article-layout.json", "evidence/lighthouse-home.json" ], "suggestedFix": "Reserve ad/banner slots, stabilize font metrics and prevent late prompt/content insertion from moving the page.", "effort": "medium", "id": "F11", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "high", "summary": "Critical resource delivery is dominated by third-party and render-blocking work.", "principleId": "be-fast-and-stable", "principleCheckId": "efficient-resource-delivery", "guidanceId": "optimize-script-priority", "evidence": "The HAR recorded 94 requests and 2.11 MB, including 1.95 MB third-party bytes; Lighthouse estimated 950 ms render-blocking savings and 610 KiB cache savings.", "artifacts": [ "evidence/home-summary.json", "evidence/home.har", "evidence/lighthouse-home.json" ], "suggestedFix": "Delay ad/analytics code until consent and idle/interaction, remove parser-blocking scripts, and improve cache lifetimes.", "effort": "large", "id": "F12", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "medium", "summary": "Substantial unused JavaScript and CSS are shipped on first load.", "principleId": "be-fast-and-stable", "principleCheckId": "trim-unused-and-duplicate-code", "guidanceId": "identify-heavy-scripts", "evidence": "Lighthouse estimated 429 KiB unused JavaScript and 35 KiB unused CSS; 32 scripts transferred 1.58 MB in the HAR.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-summary.json" ], "suggestedFix": "Code-split page features and conditionally load advertising, analytics and consent integrations only when needed.", "effort": "large", "id": "F13", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "high", "summary": "Images and controls lack accessible names.", "principleId": "be-inclusive", "principleCheckId": "names-roles-labels", "guidanceId": "accessibility", "evidence": "The image probe found 97 of 100 images without alt; Lighthouse failed image-alt, button-name and link-name.", "artifacts": [ "evidence/home-images.json", "evidence/lighthouse-home.json" ], "suggestedFix": "Give meaningful editorial images descriptive alt, mark decorative images empty-alt, and add accessible names to icon buttons/links.", "effort": "medium", "id": "F14", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "high", "summary": "Text and essential UI fail minimum color contrast.", "principleId": "be-inclusive", "principleCheckId": "sufficient-contrast", "guidanceId": "accessibility", "evidence": "Lighthouse color-contrast audit failed on the rendered homepage.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-desktop.png" ], "suggestedFix": "Adjust semantic color tokens to WCAG contrast thresholds and test all prompt, metadata and navigation text.", "effort": "small", "id": "F15", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "high", "summary": "Heading and landmark structure is not coherent.", "principleId": "be-inclusive", "principleCheckId": "structure-and-focus", "guidanceId": "accessibility", "evidence": "Lighthouse failed heading-order; the DOM probe found no main landmark and a heading sequence beginning H3, H2 with multiple consent H1s injected alongside page headings.", "artifacts": [ "evidence/home-probe.json", "evidence/lighthouse-home.json" ], "suggestedFix": "Use one content H1 per page, sequential section headings, a main landmark and properly contained consent-dialog headings.", "effort": "medium", "id": "F16", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "high", "summary": "Viewport scaling policy and small targets impair zoom/reflow use.", "principleId": "be-inclusive", "principleCheckId": "zoom-reflow-targets-and-media", "guidanceId": "fluid-scaling", "evidence": "Lighthouse failed meta-viewport because maximum-scale is 1 and failed target-size, although 360px layouts did avoid horizontal overflow.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-layout-mobile.json" ], "suggestedFix": "Remove maximum-scale=1, retain user-scalable=yes, and enlarge closely spaced controls.", "effort": "small", "id": "F17", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "medium", "summary": "The page triggers notification permission on startup and logs browser inspector issues.", "principleId": "follow-best-practices", "principleCheckId": "browser-platform-hygiene", "guidanceId": "html", "evidence": "Lighthouse failed notification-on-start and inspector-issues.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-desktop.png" ], "suggestedFix": "Request notification permission only after an explicit user gesture and resolve Chrome Issues-panel warnings.", "effort": "medium", "id": "F18", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "high", "summary": "Transport and cookie defenses are incomplete.", "principleId": "be-private-and-secure", "principleCheckId": "secure-transport-and-headers", "guidanceId": "security", "evidence": "HTTPS and nosniff are present, but headers evidence found no CSP or HSTS; cookie evidence found 10 cookies flagged insecure, including several without Secure and many SameSite=None.", "artifacts": [ "evidence/home-headers.json", "evidence/home-cookies.json" ], "suggestedFix": "Deploy an enforced CSP and HSTS, set Secure on every HTTPS cookie, and use Lax/Strict unless cross-site behavior is essential.", "effort": "medium", "id": "F19", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "high", "summary": "Third-party tracking is disproportionate to the first-load reading task.", "principleId": "be-private-and-secure", "principleCheckId": "data-minimisation-and-third-parties", "guidanceId": "privacy", "evidence": "Tracker evidence found 27 third-party origins and seven known trackers; HAR attributed 75 of 94 requests and 1.95 of 2.11 MB to third parties before consent.", "artifacts": [ "evidence/home-trackers.json", "evidence/home-summary.json", "evidence/home.har" ], "suggestedFix": "Block nonessential tracking until informed consent, reduce vendors, batch analytics and document the minimum data required.", "effort": "large", "id": "F20", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "high", "summary": "Notification permission is requested out of context on load.", "principleId": "be-private-and-secure", "principleCheckId": "in-context-permissions-and-modern-auth", "guidanceId": "privacy", "evidence": "The initial screenshot shows a notification-acquisition overlay before user intent, and Lighthouse failed notification-on-start.", "artifacts": [ "evidence/home-desktop.png", "evidence/lighthouse-home.json" ], "suggestedFix": "Ask for notifications only after a user chooses a clearly labelled subscribe action and understands the value.", "effort": "small", "id": "F21", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "high", "summary": "Several browser-enforced defensive policies are absent.", "principleId": "be-private-and-secure", "principleCheckId": "defensive-browser-policies", "guidanceId": "security", "evidence": "Headers evidence found no HSTS, Referrer-Policy, Permissions-Policy or CSP; X-Frame-Options SAMEORIGIN was present.", "artifacts": [ "evidence/home-headers.json" ], "suggestedFix": "Add HSTS, a restrictive Referrer-Policy and Permissions-Policy, and CSP frame-ancestors/script controls.", "effort": "medium", "id": "F22", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "medium", "summary": "Overlay composition is not resilient at narrow viewports.", "principleId": "be-resilient", "principleCheckId": "resilient-runtime-behaviour", "guidanceId": "resilient-context-menus-and-nested-dropdowns", "evidence": "At 360x800 the notification panel overlaps and clips the consent experience, hiding its title and upper controls.", "artifacts": [ "evidence/category-mobile.png", "evidence/home-mobile.png" ], "suggestedFix": "Ensure only one top-layer interaction is open, constrain it to the viewport and test nested third-party UI at narrow sizes.", "effort": "medium", "id": "F23", "confidence": "high", "pathId": "category", "url": "https://nlab.itmedia.co.jp/cont/cont_category/news/" }, { "severity": "high", "summary": "Consent presents acceptance prominently without an equally direct reject choice and is paired with notification nagging.", "principleId": "be-trustworthy", "principleCheckId": "no-dark-patterns", "guidanceId": "custom-button-actions", "evidence": "Initial screenshots show primary Consent and Manage options buttons but no visible Reject all action, while a second unsolicited notification panel competes above it.", "artifacts": [ "evidence/home-desktop.png", "evidence/home-mobile.png" ], "suggestedFix": "Offer equally prominent accept and reject actions, remove the simultaneous notification nag, and make later withdrawal easy.", "effort": "medium", "id": "F24", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "medium", "summary": "Editorial image delivery is not consistently modern or responsive.", "principleId": "be-sustainable", "principleCheckId": "optimised-assets", "guidanceId": "optimize-image-priority", "evidence": "The image probe found 37 legacy-format images, no detected modern-format images and one oversized image; the sampled elements generally lacked srcset.", "artifacts": [ "evidence/home-images.json" ], "suggestedFix": "Serve AVIF/WebP variants with srcset/sizes and right-size each editorial thumbnail and hero.", "effort": "medium", "id": "F25", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" }, { "severity": "high", "summary": "Third-party scripts consume most transferred bytes for a text/news landing page.", "principleId": "be-sustainable", "principleCheckId": "third-party-and-media-budget", "guidanceId": "deprioritize-background-fetches", "evidence": "HAR measured 1.95 MB third-party transfer out of 2.11 MB total; ad code alone included a 642 KiB script and trackers reported 27 third-party origins.", "artifacts": [ "evidence/home-summary.json", "evidence/home-trackers.json" ], "suggestedFix": "Set a third-party byte/request budget, defer advertising and analytics, and remove vendors that do not produce measurable reader value.", "effort": "large", "id": "F26", "confidence": "high", "pathId": "home", "url": "https://nlab.itmedia.co.jp/" } ], "taskList": [ { "id": "T01", "title": "Remove the startup notification prompt and redesign consent as one accessible, equal-choice surface", "priority": 1, "findingIds": [ "F04", "F05", "F06", "F08", "F09", "F21", "F23", "F24" ], "guidanceId": "light-dismiss-a-dialog", "status": "open" }, { "id": "T02", "title": "Gate and reduce third-party advertising/analytics to recover privacy, LCP and page weight", "priority": 2, "findingIds": [ "F10", "F12", "F13", "F20", "F26" ], "guidanceId": "deprioritize-background-fetches", "status": "open" }, { "id": "T03", "title": "Repair accessible names, heading/landmark structure, focus, targets and zoom", "priority": 3, "findingIds": [ "F07", "F14", "F15", "F16", "F17" ], "guidanceId": "accessibility", "status": "open" }, { "id": "T04", "title": "Add CSP/HSTS and tighten cookie/referrer/permissions policies", "priority": 4, "findingIds": [ "F19", "F22" ], "guidanceId": "security", "status": "open" }, { "id": "T05", "title": "Stabilize ad/banner/font slots across listing and article templates", "priority": 5, "findingIds": [ "F11" ], "guidanceId": "visually-stable-font-fallbacks", "status": "open" }, { "id": "T06", "title": "Modernize responsive image delivery and user-preference theming", "priority": 6, "findingIds": [ "F01", "F27", "F25" ], "guidanceId": "optimize-image-priority", "status": "open" }, { "id": "T07", "title": "Add progressive navigation polish and resolve inspector issues", "priority": 7, "findingIds": [ "F02", "F03", "F18" ], "guidanceId": "cross-document-transitions", "status": "open" } ], "budget": { "pathCount": 5, "auditPasses": 1 }, "agent": "pi", "runId": "2026-07-23T08-36-11-395Z" }