Manifest position 878 · CrUX rank bucket 1000

https://www.ixl.com

Coverage complete

The requested URL redirected by geography to https://uk.ixl.com/; five representative templates and an error state were audited.

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	The dark-mode screenshot remains a bright green/white page, and the computed probe reports color-scheme: normal with no prefers-color-scheme rule. IXL-001 medium: The public experience stays light when the user requests dark mode.
respect-user-preferences `respects-reduced-motion`	issues	high	CSS inspection found scroll-timeline rules but no prefers-reduced-motion rule; the reduced-motion probe confirmed the emulated preference was active. IXL-002 medium: Scroll-linked motion has no reduced-motion override.
respect-user-preferences `respects-contrast`	pass	high	Forced-colours screenshot shows visible text, controls, borders and focus treatment.
implement-natural-interactions `view-transitions`	issues	medium	The cross-template DOM/CSS probe found no view-transition-name or View Transition declarations on any representative page. IXL-003 low: State and page changes do not use View Transitions.
implement-natural-interactions `scroll-driven-animations`	pass	high	CSS probe found three scroll-timeline rule groups, while the load trace showed only one 55 ms long task.
implement-natural-interactions `physical-gestures`	pass	medium	CSS probe found scroll-snap and overscroll-behavior declarations; mobile layouts scroll naturally without overflow.
provide-guided-navigation `scroll-state-aware-chrome`	pass	medium	Scroll-timeline CSS and persistent responsive navigation provide position-aware chrome on long pages.
provide-guided-navigation `anchored-positioning`	pass	high	CSS inspection found nine anchor-positioning declarations, indicating overlays can use platform anchoring.
provide-guided-navigation `directs-attention`	pass	medium	Screenshots show clear headings, persistent navigation, visually distinct CTAs and directional cards across entry and diagnostic pages.
maximize-content-reduce-noise `no-intrusive-interruptions`	issues	high	Desktop and mobile screenshots show “First time here?” covering the hero or curriculum before any user action; the same interruption appears on the Year 3 listing. IXL-004 high: A first-visit signup modal obscures the primary content immediately on load.
maximize-content-reduce-noise `semantic-dismissible-primitives`	issues	high	The Year 3 DOM probe found no native dialog or popover but did find a DIV role=dialog, while the screenshot shows a modal overlay. IXL-005 medium: The repeated promotional modal is implemented as a custom role=dialog on curriculum pages.
maximize-content-reduce-noise `reduced-chrome`	pass	medium	After the interruption, mobile screenshots devote the viewport to curriculum, pricing or diagnostic content with compact navigation.
adapt-to-the-form-factor `responsive-no-horizontal-scroll`	pass	high	All five 360x800 layout captures report horizontalOverflowPx 0 and a viewport meta tag.
adapt-to-the-form-factor `component-level-responsiveness`	pass	medium	The same header, cards and content sections visibly recompose at 360 px across five templates; no reused component was observed failing in a narrow container.
adapt-to-the-form-factor `input-modality-aware`	pass	medium	Programmatic focus produced a visible dotted outline and mobile screenshots show comfortably sized primary controls.
support-core-task-success `clear-purpose-and-primary-action`	pass	high	First viewports clearly name personalised learning, pricing, sign-in and diagnostic purposes with prominent next actions.
support-core-task-success `primary-flow-completion`	pass	medium	Pricing exposes direct package subscription links and sign-in accepts submission; the audit stopped before purchase or use of credentials.
support-core-task-success `clear-system-state-and-recovery`	pass	high	Empty sign-in submission announces “Please enter a username and password” and moves focus to username; the 404 explains failure and links home.
be-fast-and-stable `good-core-web-vitals`	issues	high	Lighthouse scored performance 0.56 with FCP 4.5 s, LCP 13.3 s and TBT 260 ms; the local trace measured LCP 1.0 s, showing network/device sensitivity. IXL-006 high: The throttled load is slow despite a fast unthrottled local trace.
be-fast-and-stable `visual-stability`	issues	high	The mobile layout observer recorded CLS 0.2145 at about 1.02 s, above the 0.1 good threshold. IXL-007 high: The family pricing page has a large mobile layout shift.
be-fast-and-stable `efficient-main-thread`	pass	high	Unthrottled trace recorded one 55.55 ms task and only 5.55 ms total blocking time.
be-fast-and-stable `efficient-resource-delivery`	issues	high	HAR and Lighthouse show a large dependency tree and slow throttled LCP despite useful successful delivery. IXL-006 high: The throttled load is slow despite a fast unthrottled local trace. IXL-008 medium: The homepage ships a large, script-heavy request set.
be-fast-and-stable `trim-unused-and-duplicate-code`	issues	high	The HAR recorded 110 requests and 2.12 MB transferred, including 65 scripts (1.41 MB), 14 stylesheets and five fonts; Lighthouse also reported forced reflow and dependency-tree issues. IXL-008 medium: The homepage ships a large, script-heavy request set.
be-inclusive `names-roles-labels`	issues	high	Lighthouse failed button-name and label-content-name-mismatch; the visible-controls probe also found an unnamed cookie-dismiss button. IXL-009 high: Some interactive controls lack usable accessible names.
be-inclusive `sufficient-contrast`	issues	high	Lighthouse failed its color-contrast audit on the homepage; forced-colours remained readable, so the defect is in authored colours rather than complete high-contrast failure. IXL-010 medium: Some text and controls fail minimum colour contrast.
be-inclusive `structure-and-focus`	issues	high	Lighthouse failed heading-order; the DOM probe lists several H2 navigation headings before “IXL is personalised learning”. IXL-011 medium: Heading structure is not sequential and includes navigation headings before the page H1.
be-inclusive `legible-text`	pass	high	Desktop/mobile screenshots show readable line lengths, unclipped text and stable wrapping on all representative templates.
be-inclusive `zoom-reflow-targets-and-media`	pass	medium	All tested templates reflow at 360 px without overflow; viewport scaling is not disabled and primary targets are adequately sized.
follow-best-practices `no-console-errors`	pass	high	Runtime probe observed no errors or unhandled rejections during a three-second post-load window.
follow-best-practices `sound-document-and-assets`	issues	high	The image audit reported all 82 images without width/height attributes, eight below-fold images not lazy-loaded, and Lighthouse failed image-aspect-ratio. IXL-012 medium: Image markup lacks intrinsic dimensions and includes aspect-ratio defects.
follow-best-practices `browser-platform-hygiene`	pass	medium	Lighthouse best-practices score was 0.96; no notification/geolocation prompt or runtime exception appeared on load.
be-discoverable `title-and-description`	pass	high	All five representative pages have specific titles and non-empty meta descriptions.
be-discoverable `crawlable-and-mobile-friendly`	issues	high	Discoverability measured only 18% rendered-word coverage in raw HTML and no raw H1; the crawler screenshot omits most plan and sales content. IXL-013 high: Most public pricing-page content is absent for non-JavaScript crawlers.
be-discoverable `canonical-and-indexing-signals`	issues	high	DOM probes found no canonical URL and no hreflang links on the UK homepage, curriculum, pricing, sign-in, or diagnostic pages; robots.txt and sitemap.xml were present. IXL-014 medium: Representative pages omit canonical and hreflang signals despite many localized editions.
be-discoverable `structured-and-shareable-metadata`	issues	high	The homepage probe found Open Graph tags but zero JSON-LD blocks; the pricing page alone contained one JSON-LD block. IXL-015 low: The organization homepage has social tags but no structured entity data.
be-private-and-secure `secure-transport-and-headers`	issues	high	Two Google Analytics cookies were set without Secure, all 12 cookies used SameSite=None, and CSP permits unsafe-inline and unsafe-eval. HTTPS, HSTS and nosniff were present. IXL-016 high: Cookie and CSP policy leave avoidable security weaknesses.
be-private-and-secure `data-minimisation-and-third-parties`	issues	high	Tracker evidence found six third-party origins and Google Analytics, Google Tag Manager, and region1 Google Analytics before user interaction. IXL-017 medium: Anonymous first load activates several analytics and tracking services.
be-private-and-secure `in-context-permissions-and-modern-auth`	issues	high	The sign-in DOM contains username and password fields with no WebAuthn/passkey affordance; no permission prompt fired on load. IXL-018 medium: The sign-in surface exposes password-only authentication.
be-private-and-secure `defensive-browser-policies`	issues	high	HSTS, nosniff and frame protection are present, but Referrer-Policy and Permissions-Policy are absent and CSP allows unsafe-inline/eval. IXL-016 high: Cookie and CSP policy leave avoidable security weaknesses.
be-resilient `progressive-enhancement`	issues	high	Raw HTML preserved only 18% of rendered pricing-page words and omitted the H1, while homepage and curriculum raw coverage were 85%. IXL-019 medium: The core public pricing proposition depends heavily on JavaScript.
be-resilient `resilient-runtime-behaviour`	pass	medium	Responsive menu/dialog surfaces remained within the viewport and no runtime errors were observed across representative loads.
be-resilient `offline-and-installable`	issues	high	The resilience probe found no manifest, no service-worker registrations and no Cache Storage entries. IXL-020 medium: The app-like learning service has no manifest, service worker, cache, or offline fallback.
be-resilient `network-and-http-failure-states`	pass	high	A deliberately invalid route renders a clear “Sorry, page not found” recovery page with a home link.
be-internationalised `lang-dir-and-logical-properties`	pass	high	The redirected UK edition declares lang=en-GB; CSS includes logical properties and the international edition chooser is present.
be-internationalised `locale-aware-data`	pass	medium	The UK pricing page uses pounds and UK-localized copy consistently; no conflicting hand-formatted locale data was observed.
be-internationalised `time-zone-correctness`	not-applicable	high	No dates, events, schedules or time-zone-sensitive data appear on the representative public pages.
be-trustworthy `no-dark-patterns`	pass	medium	Pricing and package choices are visible, and the promotional modal offers neutral “Keep exploring” dismissal without confirmshaming.
be-trustworthy `humane-error-handling`	pass	high	Empty sign-in submission yields a concise alert and focuses the first field rather than blaming the user.
be-trustworthy `trustworthy-input-assistance`	issues	high	Both username and password inputs have autocomplete=off rather than username and current-password. IXL-021 medium: The sign-in form disables autofill and omits standard autocomplete tokens.
be-trustworthy `safe-commercial-and-account-flows`	pass	medium	Pricing clearly states the £7.99/month starting price and links each package directly to its subscription route; no disguised commitment was observed before checkout.
be-sustainable `optimised-assets`	issues	high	The image audit found eight images without srcset, eight below-fold images not lazy-loaded, five legacy-format assets, and 82 without intrinsic dimensions. IXL-022 medium: Responsive and below-fold image delivery leaves avoidable waste.
be-sustainable `no-wasteful-work`	issues	high	The 110-request, 2.12 MB load includes 65 scripts and active analytics before interaction. IXL-008 medium: The homepage ships a large, script-heavy request set. IXL-017 medium: Anonymous first load activates several analytics and tracking services.
be-sustainable `third-party-and-media-budget`	issues	high	Six third-party origins and three known trackers load on the anonymous homepage. IXL-017 medium: Anonymous first load activates several analytics and tracking services.
be-agent-ready `structured-agent-capabilities`	not-applicable	high	Agent-facing capabilities are emerging and no declared intent to expose WebMCP tools was found; absence is treated as an opportunity, not a failure.
be-agent-ready `on-device-inference`	not-applicable	high	No public summarisation or language-model task was identified where on-device inference is required; this emerging check is not applicable.
be-memory-efficient `no-leak-under-repeated-interaction`	pass	medium	After ten attempted menu open/close cycles, heap self-size rose 2.1% (25.64 MB to 26.19 MB), not evidence of unbounded retained growth.
be-memory-efficient `bounded-footprint`	pass	medium	Baseline heap summary reports 25.64 MB self size for a visually rich, script-heavy page; proportionate though not minimal.
be-memory-efficient `no-detached-dom-or-unbounded-listeners`	pass	low	Before/after summaries show closures nearly flat (25,804 to 25,848) and no Detached constructor among top retained constructors; no accumulating listener signal was observed.

Provenance

Canonical report: results/atomic/reports/0878-www_ixl_com.json
Report SHA-256: e944bacb69f95a77697cf7f6065b89d72734f8b4f2ac0e6818e4830b0e3a02ca
Local retained report: runs/2026-07-17T17-27-24-856Z/atomic-reports/www_ixl_com/2026-07-23T14-45-34-209Z/report.json
Local evidence root: runs/2026-07-17T17-27-24-856Z/atomic-reports/www_ixl_com/2026-07-23T14-45-34-209Z
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.