Accessibility pre-check: is your site usable by everyone?
Scans rules measurable from static HTML: language, alt text, form labels, heading order and empty links.
What does the accessibility pre-check measure?
Rules that can be proven from static HTML, grouped by the four WCAG principles.
Perceivable
Image alt text, iframe titles, autoplay and whether zoom is blocked.
Operable
Unnamed links and buttons, vague link text, positive tabindex and skip links.
Understandable
Page language, title and form field labels.
Robust
Heading hierarchy, duplicate ids, table headers and landmarks.
How is the score calculated?
The total is a weighted average of the layers below. Checks within each layer are scored on their own; a critical issue can cap the total.
| Layer | Weight | Measures |
|---|---|---|
| Perceivable | %35 | Alt text, zoom, media |
| Operable | %30 | Links, buttons, keyboard |
| Understandable | %20 | Language, title, form labels |
| Robust | %15 | Structure and markup |
What this test measures — and what it cannot
Raw HTML was checked against WCAG principles. Colour contrast, focus indicators, JavaScript-injected content and screen reader behaviour cannot be measured without a browser; this is a pre-check, not a compliance certificate.
This report is an automated first assessment. It does not guarantee appearing in AI assistants or Google; it only shows measurable technical and content signals.
Frequently asked questions
Does this certify WCAG compliance?
No. It scans automatable rules only. Colour contrast, focus order and the screen reader experience need manual testing by an expert.