https://www.clickhouse.com
Accessibility
· 13 checks — Landmarks, headings, alt text, forms, and link quality rolled into one auditable list.SCORE
68
GRADE
D
FIX
4
REVIEW
4
PASS
5
INFO
0
Checks
135 PASS 4 REVIEW 4 FIX
FLink & Button QualityAction65 issue(s) across 201 links and 34 buttonsFIX
Link & Button Quality
Action65 issue(s) across 201 links and 34 buttons
65 issue(s) across 201 links and 34 buttons
Critical::
61 link(s) with no accessible text
Links without text are announced as raw URLs by screen readers.
Got: /user-stories?loc=sony&search=sony; /blog/hifis-migration-from-bigquery-to-clickhouse?loc=carousel; /user-stories?loc=vercel; /user-stories?loc=meta; /user-stories?loc=ebay; /user-stories?loc=microsoft&search=microsoft; /user-stories?loc=spotify; /videos/lyft-user-story?loc=lyft-homepage; /user-stories?loc=hubspot; /blog/langchain-why-we-choose-clickhouse-to-power-langchain?loc=langchain-homepage (+51 more)
Warning::
25 link(s) open in new tab without warning
Add '(opens in new tab)' to link text or aria-label.
Got: https://langfuse.com/?utm_source=clickhouse_topnav; https://clickhouse.com/docs; https://github.com/ClickHouse/ClickHouse?utm_source=clickhouse&utm_medium=website&utm_campaign=website-nav; https://console.clickhouse.cloud/signUp?loc=hero&glxid=1a153a28-f55e-4447-a7ad-b4d188848388&pagePath=%2F&origPath=%2F&experiments=mktg-website-nav-cta-btn-nov-2025%3A1; https://langfuse.com/?utm_source=clickhouse_hero; https://trust.clickhouse.com/; https://clickhouse.com/docs/concepts/why-clickhouse-is-so-fast; https://clickhouse.com/docs/integrations; https://console.clickhouse.cloud/signUp?loc=why-clickhouse&glxid=1a153a28-f55e-4447-a7ad-b4d188848388&pagePath=%2F&origPath=%2F&experiments=mktg-website-nav-cta-btn-nov-2025%3A1; https://console.clickhouse.cloud/signUp?loc=home-deploy-your-way&glxid=1a153a28-f55e-4447-a7ad-b4d188848388&pagePath=%2F&origPath=%2F&experiments=mktg-website-nav-cta-btn-nov-2025%3A1 (+15 more)
Critical::
4 button(s) with no accessible text
Info::
115 link(s) with descriptive text
201 links
61 empty
0 generic text
25 new tab
4 empty buttons
| Element | Text | Issue | Suggested Fix |
|---|---|---|---|
| https://langfuse.com/?utm_source=clickho… | Langfuse Cloud LLM observabili… | new tab | Add '(opens in new tab)' to text |
| https://clickhouse.com/docs | Docs | new tab | Add '(opens in new tab)' to text |
| https://github.com/ClickHouse/ClickHouse… | 46.7k | new tab | Add '(opens in new tab)' to text |
| https://console.clickhouse.cloud/signUp?… | Start free cloud trial | new tab | Add '(opens in new tab)' to text |
| https://langfuse.com/?utm_source=clickho… | Langfuse is now part of ClickH… | new tab | Add '(opens in new tab)' to text |
| /user-stories?loc=sony&search=sony | (empty) | empty | Add link text or aria-label |
| /blog/hifis-migration-from-bigquery-to-c… | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=vercel | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=meta | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=ebay | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=microsoft&search=micro… | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=spotify | (empty) | empty | Add link text or aria-label |
| /videos/lyft-user-story?loc=lyft-homepag… | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=hubspot | (empty) | empty | Add link text or aria-label |
| /blog/langchain-why-we-choose-clickhouse… | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=instacart&search=insta… | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=contentsquare&search=c… | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=cisco | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=nginx | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=cloudflare&search=clou… | (empty) | empty | Add link text or aria-label |
| /blog/nyc-meetup-report-real-time-slicin… | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=fisker | (empty) | empty | Add link text or aria-label |
| /blog/trackingplan-web-analytics-with-cl… | (empty) | empty | Add link text or aria-label |
| /blog/serving-real-time-analytics-across… | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=ibm&search=ibm | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=gitlab | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=mux | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=netapp | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=servicenow | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=posthog | (empty) | empty | Add link text or aria-label |
| /blog/weights-and-biases-scale-ai-develo… | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=deutsche-bank&search=d… | (empty) | empty | Add link text or aria-label |
| /blog/behind-the-scenes-how-clickhouse-h… | (empty) | empty | Add link text or aria-label |
| /videos/funnel-analytics-and-distributed… | (empty) | empty | Add link text or aria-label |
| /blog/unlocking-the-power-of-onchain-ana… | (empty) | empty | Add link text or aria-label |
| /blog/poolside-using-clickhouse-to-build… | (empty) | empty | Add link text or aria-label |
| /blog/how-real-estate-analytics-made-its… | (empty) | empty | Add link text or aria-label |
| /blog/how-anthropic-is-using-clickhouse-… | (empty) | empty | Add link text or aria-label |
| /blog/scaling-observabilty-for-thousands… | (empty) | empty | Add link text or aria-label |
| /videos/ramp?loc=carousel | (empty) | empty | Add link text or aria-label |
| /blog/transforming-ad-tech-how-cognitiv-… | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=statsig | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=didi&search=didi | (empty) | empty | Add link text or aria-label |
| /blog/prefect-event-driven-workflow-orch… | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=cursor | (empty) | empty | Add link text or aria-label |
| /blog/how-trip.com-migrated-from-elastic… | (empty) | empty | Add link text or aria-label |
| /videos/sierraai?loc=sierra | (empty) | empty | Add link text or aria-label |
| /blog/seeing-the-big-picture-shopees-jou… | (empty) | empty | Add link text or aria-label |
| /blog/clickhouse-replaces-postgres-to-po… | (empty) | empty | Add link text or aria-label |
| /blog/tekion-adopts-clickhouse-cloud-to-… | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=whatnot | (empty) | empty | Add link text or aria-label |
| /videos/scaling-graphite-with-clickhouse… | (empty) | empty | Add link text or aria-label |
| /blog/why-astronomer-chose-clickhouse-to… | (empty) | empty | Add link text or aria-label |
| /blog/corsearch-replaces-mysql-with-clic… | (empty) | empty | Add link text or aria-label |
| /blog/upollos-journey-from-bigquery-to-c… | (empty) | empty | Add link text or aria-label |
| /blog/amp-clickhouse-oss-to-clickhouse-c… | (empty) | empty | Add link text or aria-label |
| /blog/electrum-driving-net-zero-carbon-f… | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=spoton | (empty) | empty | Add link text or aria-label |
| /blog/how-memorial-sloan-kettering-cance… | (empty) | empty | Add link text or aria-label |
| /blog/migrating-to-clickhouse-cloud-in-j… | (empty) | empty | Add link text or aria-label |
| /videos/vantage | (empty) | empty | Add link text or aria-label |
| /blog/how-solarwinds-uses-clickhouse-for… | (empty) | empty | Add link text or aria-label |
| /blog/longbridge-technology-simplifies-t… | (empty) | empty | Add link text or aria-label |
| /blog/how-harvey-uses-clickhouse-for-pro… | (empty) | empty | Add link text or aria-label |
| /user-stories?loc=royal-bank&search=roya… | (empty) | empty | Add link text or aria-label |
| /blog/observing-in-style-how-poizon-rebu… | (empty) | empty | Add link text or aria-label |
| https://trust.clickhouse.com/ | Secure,compliantMore -> | new tab | Add '(opens in new tab)' to text |
| https://clickhouse.com/docs/concepts/why… | ResourceoptimizedMore -> | new tab | Add '(opens in new tab)' to text |
| https://clickhouse.com/docs/integrations | 100+integrationsMore -> | new tab | Add '(opens in new tab)' to text |
| https://console.clickhouse.cloud/signUp?… | free cloud trial -> | new tab | Add '(opens in new tab)' to text |
| https://console.clickhouse.cloud/signUp?… | ClickHouse CloudThe best way t… | new tab | Add '(opens in new tab)' to text |
| https://x.com/ClickhouseDB | X | new tab | Add '(opens in new tab)' to text |
| /slack | Slack | new tab | Add '(opens in new tab)' to text |
| https://telegram.me/clickhouse_en | Telegram | new tab | Add '(opens in new tab)' to text |
| https://www.meetup.com/pro/clickhouse | Meetup | new tab | Add '(opens in new tab)' to text |
| https://www.linkedin.com/company/clickho… | new tab | Add '(opens in new tab)' to text | |
| /media | Media | new tab | Add '(opens in new tab)' to text |
| https://github.com/ClickHouse/ClickHouse | GitHub | new tab | Add '(opens in new tab)' to text |
| /slack | Slack | new tab | Add '(opens in new tab)' to text |
| https://www.linkedin.com/company/clickho… | new tab | Add '(opens in new tab)' to text | |
| https://x.com/ClickhouseDB | X | new tab | Add '(opens in new tab)' to text |
| https://bsky.app/profile/clickhouse.com | Bluesky | new tab | Add '(opens in new tab)' to text |
| https://telegram.me/clickhouse_en | Telegram | new tab | Add '(opens in new tab)' to text |
| https://www.meetup.com/pro/clickhouse | Meetup | new tab | Add '(opens in new tab)' to text |
| https://github.com/ClickHouse/ClickHouse | Star us on Github | new tab | Add '(opens in new tab)' to text |
| https://trust.clickhouse.com/ | Security | new tab | Add '(opens in new tab)' to text |
| <button> | (empty) | empty | Add button text or aria-label |
| <button> | (empty) | empty | Add button text or aria-label |
| <button> | (empty) | empty | Add button text or aria-label |
| <button> | (empty) | empty | Add button text or aria-label |
145 links and buttons have descriptive text
Links without text are announced as raw URLs by screen readers.
/user-stories?loc=sony&search=sony; /blog/hifis-migration-from-bigquery-to-clickhouse?loc=carousel; /user-stories?loc=vercel; /user-stories?loc=meta; /user-stories?loc=ebay; /user-stories?loc=microsoft&search=microsoft; /user-stories?loc=spotify; /videos/lyft-user-story?loc=lyft-homepage; /user-stories?loc=hubspot; /blog/langchain-why-we-choose-clickhouse-to-power-langchain?loc=langchain-homepage (+51 more)
Why this matters
Links with no accessible text (empty <a></a>, image-only no alt, icon-only no aria-label) are unidentifiable to screen readers.
Source: WCAG 2.1 SC 2.4.4
Add '(opens in new tab)' to link text or aria-label.
https://langfuse.com/?utm_source=clickhouse_topnav; https://clickhouse.com/docs; https://github.com/ClickHouse/ClickHouse?utm_source=clickhouse&utm_medium=website&utm_campaign=website-nav; https://console.clickhouse.cloud/signUp?loc=hero&glxid=1a153a28-f55e-4447-a7ad-b4d188848388&pagePath=%2F&origPath=%2F&experiments=mktg-website-nav-cta-btn-nov-2025%3A1; https://langfuse.com/?utm_source=clickhouse_hero; https://trust.clickhouse.com/; https://clickhouse.com/docs/concepts/why-clickhouse-is-so-fast; https://clickhouse.com/docs/integrations; https://console.clickhouse.cloud/signUp?loc=why-clickhouse&glxid=1a153a28-f55e-4447-a7ad-b4d188848388&pagePath=%2F&origPath=%2F&experiments=mktg-website-nav-cta-btn-nov-2025%3A1; https://console.clickhouse.cloud/signUp?loc=home-deploy-your-way&glxid=1a153a28-f55e-4447-a7ad-b4d188848388&pagePath=%2F&origPath=%2F&experiments=mktg-website-nav-cta-btn-nov-2025%3A1 (+15 more)
Why this matters
Links with target="_blank" without rel="noopener" leak the originating page's window context — security and UX issue.
Learn more ▾ ▴
Without rel="noopener", the new tab can navigate the original tab via window.opener (tab-nabbing attack). Modern browsers default to noopener for target=_blank but only since recent versions. Always set rel="noopener noreferrer" explicitly.
Source: MDN target / OWASP
DDark Mode SupportActionNo dark mode signalsFIX
Dark Mode Support
ActionNo dark mode signals
No dark mode signals
Info::
No dark mode signals detected
Consider adding CSS with @media (prefers-color-scheme: dark) and <meta name='color-scheme' content='light dark'>.
Info::
Detection limited to meta tags and inline styles
External CSS files may contain prefers-color-scheme rules not visible to this scan.
Dark ModeNo Dark Mode Detected
color-scheme meta Not set ✗Dark theme-color Not set ✗CSS indicators Not detected ✗
Detection limited to meta tags and inline styles.
DPrint StylesheetActionNo print stylesFIX
Print Stylesheet
ActionNo print styles
No print styles
Info::
No print-specific styles detected
When users print this page, they get the screen layout including navigation and non-essential elements. Add @media print rules to hide navigation and optimize layout for paper.
Print Stylesheet No Print Styles
Print stylesheet Not found ✗Inline @media print Not detected ✗
BLandmark Structure11 landmarksREVIEW
Landmark Structure
11 landmarks
11 landmarks
Info::
<main> landmark present
Info::
2 <nav> landmark(s) found
Warning::
2 of 2 <nav> elements are unlabeled
Multiple navigations need aria-label to distinguish them for screen readers.
Warning::
Skip navigation link is missing (WCAG 2.4.1)
Add a skip link as the first focusable element so keyboard users can bypass repeated navigation.
Page Structure — as a screen reader sees it
Multiple navigations need aria-label to distinguish them for screen readers.
Why this matters
Some <nav> elements lack aria-label — screen-reader users hear 'navigation' multiple times with no way to distinguish them.
Learn more ▾ ▴
When a page has multiple <nav> regions (primary, footer, breadcrumb), each needs aria-label or aria-labelledby. AT users navigate by landmark; identical 'navigation' announcements force them to enter each one to discover purpose.
Source: WAI-ARIA Authoring Practices
Add a skip link as the first focusable element so keyboard users can bypass repeated navigation.
Why this matters
Without a skip-nav link, keyboard users tab through every nav item before reaching content — every page, every visit.
Learn more ▾ ▴
WCAG 2.4.1 (Bypass Blocks) requires a mechanism to skip past repeated content. The standard implementation is a 'Skip to main content' link that's the first focusable element, visually hidden until focused. Three lines of HTML + four of CSS.
Source: WCAG 2.1 SC 2.4.1
B404 Error PageHTTP 404, custom pageREVIEW
404 Error Page
HTTP 404, custom page
HTTP 404, custom page
Info::
Correct 404 status code returned
Got: HTTP 404
Info::
Custom styled 404 page
Info::
Navigation links present on 404 page
Info::
Homepage link present on 404 page
404 Page Quality ✓ Custom 404 Page
Status Code HTTP 404 ✓Page Title 404 | ClickHouse ✓Custom Styling ✓Navigation ✓Homepage Link ✓Search Form ✗
BWeb ManifestValid manifestREVIEW
Web Manifest
Valid manifest
Valid manifest
Info::
Name present: ClickHouse
Info::
192x192 icon present
Info::
512x512 icon present
Info::
Display mode: standalone
PWA Install Criteria Not Installable
Name ClickHouse ✓192×192 icon ✓512×512 icon ✓Start URL ✗Display Mode standalone ✓
Name ClickHouse Display Mode standalone Theme Color #161616 Background Color #161616 Icons 2 icon(s)
CColor Contrast (Screenshot)Action20 text elements analyzed, 20 fail WCAG AAREVIEW
Color Contrast (Screenshot)
Action20 text elements analyzed, 20 fail WCAG AA
Analyzes text contrast against the actual rendered page, including background images, gradients, and overlays that CSS-based tools cannot detect.
0 pass 20 fail WCAG AA
h1 The leading
1.07:1#000000
on#0C0C0C
needs 3.0:1 (large text)32px · bottom of viewport
h1 database for AI
1.07:1#000000
on#0C0C0C
needs 3.0:1 (large text)32px · bottom of viewport
h2 Built for every modern data challenge
1.07:1#000000
on#0C0C0C
needs 3.0:1 (large text)24px · bottom of viewport
h2 Build real-time data products that scale
1.07:1#000000
on#0C0C0C
needs 3.0:1 (large text)24px · bottom of viewport
h2 Why ClickHouse?
1.07:1#000000
on#0C0C0C
needs 3.0:1 (large text)24px · bottom of viewport
h2 Seamlessly integrate with your stack
1.07:1#000000
on#0C0C0C
needs 3.0:1 (large text)24px · bottom of viewport
h2 Why is ClickHouse so fast?
1.07:1#000000
on#0C0C0C
needs 3.0:1 (large text)24px · bottom of viewport
h2 Deploy your way
1.07:1#000000
on#0C0C0C
needs 3.0:1 (large text)24px · bottom of viewport
h2 Join the
1.07:1#000000
on#0C0C0C
needs 3.0:1 (large text)24px · bottom of viewport
h2 developers using ClickHouse today
1.07:1#000000
on#0C0C0C
needs 3.0:1 (large text)24px · bottom of viewport
h2 FAQs
1.07:1#000000
on#0C0C0C
needs 3.0:1 (large text)24px · bottom of viewport
h2 Start using
1.07:1#000000
on#0C0C0C
needs 3.0:1 (large text)24px · bottom of viewport
h2 in seconds
1.07:1#000000
on#0C0C0C
needs 3.0:1 (large text)24px · bottom of viewport
h3 Real-time analytics
1.07:1#000000
on#0C0C0C
needs 3.0:1 (large text)19px · bottom of viewport
h3 Observability
1.07:1#000000
on#0C0C0C
needs 3.0:1 (large text)19px · bottom of viewport
h3 Data warehousing
1.07:1#000000
on#0C0C0C
needs 3.0:1 (large text)19px · bottom of viewport
h3 ML & GenAI
1.07:1#000000
on#0C0C0C
needs 3.0:1 (large text)19px · bottom of viewport
h3 Blazing fast
1.07:1#000000
on#0C0C0C
needs 3.0:1 (large text)19px · bottom of viewport
h3 Developer friendly
1.07:1#000000
on#0C0C0C
needs 3.0:1 (large text)19px · bottom of viewport
h3 Cost effective
1.07:1#000000
on#0C0C0C
needs 3.0:1 (large text)19px · bottom of viewport
Show all checked elements (20)
| Element | Ratio | Required | FG | BG | Result |
|---|---|---|---|---|---|
| h1 The leading | 1.07:1 | 3.0:1 | #000000 | #0C0C0C | Fail |
| h1 database for AI | 1.07:1 | 3.0:1 | #000000 | #0C0C0C | Fail |
| h2 Built for every mode… | 1.07:1 | 3.0:1 | #000000 | #0C0C0C | Fail |
| h2 Build real-time data… | 1.07:1 | 3.0:1 | #000000 | #0C0C0C | Fail |
| h2 Why ClickHouse? | 1.07:1 | 3.0:1 | #000000 | #0C0C0C | Fail |
| h2 Seamlessly integrate… | 1.07:1 | 3.0:1 | #000000 | #0C0C0C | Fail |
| h2 Why is ClickHouse so… | 1.07:1 | 3.0:1 | #000000 | #0C0C0C | Fail |
| h2 Deploy your way | 1.07:1 | 3.0:1 | #000000 | #0C0C0C | Fail |
| h2 Join the | 1.07:1 | 3.0:1 | #000000 | #0C0C0C | Fail |
| h2 developers using Cli… | 1.07:1 | 3.0:1 | #000000 | #0C0C0C | Fail |
| h2 FAQs | 1.07:1 | 3.0:1 | #000000 | #0C0C0C | Fail |
| h2 Start using | 1.07:1 | 3.0:1 | #000000 | #0C0C0C | Fail |
| h2 in seconds | 1.07:1 | 3.0:1 | #000000 | #0C0C0C | Fail |
| h3 Real-time analytics | 1.07:1 | 3.0:1 | #000000 | #0C0C0C | Fail |
| h3 Observability | 1.07:1 | 3.0:1 | #000000 | #0C0C0C | Fail |
| h3 Data warehousing | 1.07:1 | 3.0:1 | #000000 | #0C0C0C | Fail |
| h3 ML & GenAI | 1.07:1 | 3.0:1 | #000000 | #0C0C0C | Fail |
| h3 Blazing fast | 1.07:1 | 3.0:1 | #000000 | #0C0C0C | Fail |
| h3 Developer friendly | 1.07:1 | 3.0:1 | #000000 | #0C0C0C | Fail |
| h3 Cost effective | 1.07:1 | 3.0:1 | #000000 | #0C0C0C | Fail |
Methodology: The top 20 text elements by font size were checked. Background color was sampled from the desktop screenshot using a 5-point pattern. WCAG 2.1 AA requires 4.5:1 for normal text and 3:1 for large text.
A+Heading Hierarchy25 headingsPASS
Heading Hierarchy
25 headings
25 headings
Info::
Single H1 present
- H1 The leadingdatabase for AI
- H2 Built for every modern data challenge
- H3 Real-time analytics
- H3 Observability
- H3 Data warehousing
- H3 ML & GenAI
- H2 Build real-time data products that scale
- H2 Why ClickHouse?
- H3 Blazing fast
- H3 Developer friendly
- H3 Cost effective
- H3 OpenSource
- H3 Secure,compliant
- H3 Resourceoptimized
- H3 Provenat scale
- H3 100+integrations
- H2 Seamlessly integrate with your stack
- H2 Why is ClickHouse so fast?
- H2 Deploy your way
- H3 ClickHouse Cloud
- H3 ClickHouse
- H3 ClickHouse Local
- H2 Join the 100k+ developers using ClickHouse today
- H2 FAQs
- H2 Start using ClickHouse in seconds
AAlt Text Quality2 of 93 images have issuesPASS
Alt Text Quality
2 of 93 images have issues
2 of 93 images have issues
Warning::
2 image(s) with generic alt text
Info::
61 decorative image(s) correctly marked
Info::
30 image(s) with good alt text
93 images 30 good alt text 61 decorative 2 generic
| Issue | Count |
|---|---|
| generic | 2 image(s) |
A+Form AccessibilityNo form controlsPASS
Form Accessibility
No form controls
No form controls
Info::
No form controls on this page
No form controls found.
AFavicon & Branding8 icon(s) detectedPASS
Favicon & Branding
8 icon(s) detected
8 icon(s) detected
Info::
favicon.ico present at site root
Info::
HTML icon links detected
Info::
Apple touch icon present
Info::
SVG favicon detected — scales perfectly to any size
Info::
Multiple icon sizes detected
✓ favicon.ico Present
✓ PNG Icons Present
✓ Apple Touch Present
✓ SVG Favicon Present
✓ Manifest Icons Present
✓ Multiple Sizes Present
ALighthouse Accessibility AuditsScore 92/100 — 2 failing, 29 passedPASS
Lighthouse Accessibility Audits
Score 92/100 — 2 failing, 29 passed
92
Accessibility
These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.
Names and labels
When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.
Why this matters
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.flip-selection > div.relative > div.absolute > button.group/playButton div.flip-selection > div.relative > div.absolute > button.group/playButton |
div.flip-selection > div.relative > div.absolute > button.group/playButton div.flip-selection > div.relative > div.absolute > button.group/playButton |
div.flip-selection > div.relative > div.absolute > button.group/playButton div.flip-selection > div.relative > div.absolute > button.group/playButton |
div#getting_started > div.mx-auto > pre.relative > button.absolute div#getting_started > div.mx-auto > pre.relative > button.absolute |
Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.
Why this matters
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline div.swiper-wrapper > div.swiper-slide > div.inline-block > a.inline |
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Image elements have `[alt]` attributes
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●`button`, `link`, and `menuitem` elements have accessible names
●ARIA attributes are used as specified for the element's role
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<frame>` or `<iframe>` elements have a title
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links are distinguishable without relying on color.
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Image elements do not have `[alt]` attributes that are redundant text.
●Identical links have the same purpose.
●Elements with visible text labels have matching accessible names.
○`[accesskey]` values are unique
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
○`[role]`s are contained by their required parent element
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○ARIA IDs are unique
○No form fields have multiple labels
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○Form elements have associated labels
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`[lang]` attributes have a valid value
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○Uses ARIA roles only on compatible elements
○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
○`<td>` elements in a large `<table>` have one or more table headers.
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.