Manifest position 163 · CrUX rank bucket 1000

https://labs.google

Coverage complete

Atomic coverage complete across 58 checks and five representative page templates plus the 404 recovery state.

Attempts

1 / 3

Judged checks

58 / 58

Blocked

Not run

This report has no published overall score. Blocked and not-run checks are not passes. A coverage-complete report means every check has a judged outcome; it does not mean every check passed.

All 58 atomic check outcomes

Principle / check	Status	Confidence	Evidence or reason
respect-user-preferences `respects-color-scheme`	issues	high	Preference screenshots and computed styles were compared. F01 medium: The newsletter template ignores the user’s dark colour-scheme preference.
respect-user-preferences `respects-reduced-motion`	pass	high	Emulated prefers-reduced-motion: reduce produced zero active animations and exposed multiple explicit reduction rules.
respect-user-preferences `respects-contrast`	issues	high	axe contrast and preference CSS were inspected. F05 high: Important homepage text has extremely low contrast.
implement-natural-interactions `view-transitions`	pass	medium	Repeated carousel changes produced bounded CSS animations and clear active-state updates rather than abrupt swaps.
implement-natural-interactions `scroll-driven-animations`	pass	high	CSS inspection found four scroll-timeline/animation-timeline rules.
implement-natural-interactions `physical-gestures`	pass	medium	Carousels provide native previous/next buttons, skip affordance and declarative animation; no fighting pointer-only gesture was observed.
provide-guided-navigation `scroll-state-aware-chrome`	pass	medium	Fixed labelled navigation and declarative scroll timelines preserve orientation through the long homepage.
provide-guided-navigation `anchored-positioning`	not-applicable	high	No tooltip, popover, or floating-menu surface appears on the representative paths.
provide-guided-navigation `directs-attention`	pass	high	Carousel sections expose previous/next controls, aria-current progress state, category tabs, and a skip-to-next-section link.
maximize-content-reduce-noise `no-intrusive-interruptions`	pass	high	Screenshots show a dismissible consent notice with equal Agree and No thanks actions; no unrelated pop-up or interstitial was present.
maximize-content-reduce-noise `semantic-dismissible-primitives`	not-applicable	high	No site-authored transient overlay or disclosure control appears on the representative paths; the Google consent component is an external platform control with native buttons.
maximize-content-reduce-noise `reduced-chrome`	pass	high	Screenshots show content-led hero, listing, and detail layouts with restrained navigation chrome.
adapt-to-the-form-factor `responsive-no-horizontal-scroll`	pass	high	At 360x800 the layout primitive reports scrollWidth 360, clientWidth 360 and 0 px horizontal overflow; mobile screenshots remain usable.
adapt-to-the-form-factor `component-level-responsiveness`	pass	medium	Distinct desktop/mobile screenshots show carousel, navigation, form and product components reflowing within their available width without overflow.
adapt-to-the-form-factor `input-modality-aware`	pass	medium	Focus probe shows visible browser or authored focus indicators on primary controls, and measured primary targets are generally at least 44 px; mobile navigation remains button-operated.
support-core-task-success `clear-purpose-and-primary-action`	pass	high	Each first viewport clearly names its experiment or task and presents Try it now, Learn more, Join Waitlist, Express interest, or signup content.
support-core-task-success `primary-flow-completion`	issues	high	The newsletter flow was exercised with an empty submission. F09 high: The newsletter form marks fields required visually but provides no native or announced invalid state.
support-core-task-success `clear-system-state-and-recovery`	issues	high	Invalid form and invalid-route recovery states were exercised. F09 high: The newsletter form marks fields required visually but provides no native or announced invalid state.
be-fast-and-stable `good-core-web-vitals`	issues	high	Lighthouse and a DevTools trace measured load responsiveness and stability. F02 high: The homepage misses the good LCP range.
be-fast-and-stable `visual-stability`	pass	high	Mobile layout observation measured CLS 0.00025 and Lighthouse measured 0.
be-fast-and-stable `efficient-main-thread`	pass	high	Trace recorded only 17.42 ms TBT with three ~50–60 ms long tasks; Lighthouse TBT was 180 ms.
be-fast-and-stable `efficient-resource-delivery`	issues	high	HAR and DOM media probes measured delivery. F03 high: The homepage eagerly transfers a disproportionate set of hero videos.
be-fast-and-stable `trim-unused-and-duplicate-code`	issues	high	Lighthouse code coverage diagnostics quantified unused JavaScript. F04 medium: Substantial JavaScript is shipped but unused on initial load.
be-inclusive `names-roles-labels`	issues	high	axe and semantic DOM probes examined accessible naming and roles. F06 medium: Carousel progress indicators use prohibited ARIA attributes.
be-inclusive `sufficient-contrast`	issues	high	axe and Lighthouse measured text contrast. F05 high: Important homepage text has extremely low contrast.
be-inclusive `structure-and-focus`	issues	high	Landmarks/headings and focus indicators were inspected across templates. F07 medium: Landmark and heading structure is inconsistent across major templates.
be-inclusive `legible-text`	pass	medium	Visual inspection shows comfortable line lengths and unclipped type on detail/listing pages at tested viewports, apart from separately reported contrast.
be-inclusive `zoom-reflow-targets-and-media`	pass	medium	Viewport permits scaling, mobile layouts reflow without overflow, and principal controls measure around 44–65 px; autoplay hero media is muted/decorative.
follow-best-practices `no-console-errors`	pass	high	Lighthouse errors-in-console audit passed with no entries.
follow-best-practices `sound-document-and-assets`	issues	high	Doctype, charset, media and responsive-image delivery were inspected. F11 medium: Many experiment images are oversized and lack responsive candidates.
follow-best-practices `browser-platform-hygiene`	issues	high	Lighthouse best-practice diagnostics were inspected. F12 low: The production JavaScript bundle has no usable source map.
be-discoverable `title-and-description`	issues	high	Rendered and raw crawler metadata were compared across routes. F13 low: The Science page’s meta description is not present in raw crawler HTML.
be-discoverable `crawlable-and-mobile-friendly`	pass	high	All representative pages expose viewport metadata; navigation uses real href links; robots permits crawling and points to a sitemap.
be-discoverable `canonical-and-indexing-signals`	pass	high	Representative pages return rendered content, expose canonical URLs, robots allows indexing, sitemap lists routes, and the tested 404 is explicitly noindex.
be-discoverable `structured-and-shareable-metadata`	pass	high	Every representative page exposes Open Graph metadata and one JSON-LD block matching its visible page type/content.
be-private-and-secure `secure-transport-and-headers`	issues	high	Transport and main-document response headers were inspected. F08 high: The main document omits baseline browser security headers.
be-private-and-secure `data-minimisation-and-third-parties`	pass	medium	No cookies were set before consent; analytics requests carried denied/non-personalised consent signals, although two known analytics origins were contacted.
be-private-and-secure `in-context-permissions-and-modern-auth`	not-applicable	high	No permission or authentication surface appears in the covered public discovery and newsletter journeys.
be-private-and-secure `defensive-browser-policies`	issues	high	Browser-enforced policy headers were inspected. F08 high: The main document omits baseline browser security headers.
be-resilient `progressive-enhancement`	pass	high	Raw HTML retained 80–97% of rendered content across five templates and none was a JS shell.
be-resilient `resilient-runtime-behaviour`	pass	medium	Representative routes and repeated carousel interaction completed without exceptions; controls and state remained present.
be-resilient `offline-and-installable`	not-applicable	high	The audited surfaces are public marketing/content and server-dependent AI product entry pages; offline completion is not a meaningful core task.
be-resilient `network-and-http-failure-states`	pass	high	An invalid route presents a clear 404 explanation and a Go Home recovery link, with noindex set.
be-internationalised `lang-dir-and-logical-properties`	pass	medium	All representative documents declare lang=en, preserve coherent reading order, and reflow at mobile width.
be-internationalised `locale-aware-data`	not-applicable	high	The representative pages expose no dates, currencies, locale-sensitive numbers, durations, or calendars.
be-internationalised `time-zone-correctness`	not-applicable	high	The representative pages expose no events or time values.
be-trustworthy `no-dark-patterns`	pass	high	Consent offers equally prominent Agree and No thanks controls; signup terms/data-use text is visible and a Clear form action is present.
be-trustworthy `humane-error-handling`	issues	high	The empty newsletter form was submitted and invalid/error announcements inspected. F09 high: The newsletter form marks fields required visually but provides no native or announced invalid state.
be-trustworthy `trustworthy-input-assistance`	issues	high	Identity-field autocomplete metadata was inspected. F10 medium: Newsletter identity fields omit autocomplete metadata.
be-trustworthy `safe-commercial-and-account-flows`	not-applicable	high	No checkout, subscription billing, authentication, or account-management flow exists in the covered site-owned surfaces.
be-sustainable `optimised-assets`	issues	high	Rendered and intrinsic image dimensions, formats and srcset were inspected. F11 medium: Many experiment images are oversized and lack responsive candidates.
be-sustainable `no-wasteful-work`	issues	high	HAR and media probes quantified eager background/non-visible transfers. F03 high: The homepage eagerly transfers a disproportionate set of hero videos.
be-sustainable `third-party-and-media-budget`	issues	high	HAR and tracker probes quantified media and third-party cost. F03 high: The homepage eagerly transfers a disproportionate set of hero videos.
be-agent-ready `structured-agent-capabilities`	not-applicable	high	The audited host is a marketing directory linking to separate experiments, not an agent-facing transactional surface; structured tool exposure is not required for this host.
be-agent-ready `on-device-inference`	not-applicable	high	The directory and signup pages contain no local inference task where a built-in model or summariser would improve the experience.
be-memory-efficient `no-leak-under-repeated-interaction`	pass	medium	After ten full-page scroll cycles, heap size was 25.21 MB versus 23.91 MB baseline (+5.4%); closure count fell slightly and large typed-array populations stayed identical, with no unbounded pattern established.
be-memory-efficient `bounded-footprint`	pass	medium	Baseline retained self size was 23.91 MB for a media-rich Angular directory; runtime JS heap was about 17.3 MB, proportionate to the observed page.
be-memory-efficient `no-detached-dom-or-unbounded-listeners`	pass	medium	Heap summaries list no Detached* constructor among top retained populations; closure count changed from 23,054 to 22,986 after repetition.

Provenance

Canonical report: results/atomic/reports/0163-labs_google.json
Report SHA-256: 5d477e427819f3e8b316848e73514b0b4f90feb6aa074ab5575ff1da72f969ed
Local retained report: runs/2026-07-17T17-27-24-856Z/atomic-reports/labs_google/2026-07-18T20-49-02-219Z/report.json
Local evidence root: runs/2026-07-17T17-27-24-856Z/atomic-reports/labs_google/2026-07-18T20-49-02-219Z
Catalog SHA-256: sha256:78ccfdb2d483f4c57d9dafed80fd86c6265585a56457c8dcfddc254b80fb44d7

Raw screenshots, HARs, traces, heaps, and other browser artifacts are retained at the local evidence root and intentionally are not committed. Artifact paths in the canonical report are relative to that root.