Heading structure checker
Paste your page's HTML to see its heading outline and the structural problems screen-reader users trip over — no h1, several h1s, a skipped level, or an empty heading. Nothing is uploaded; the parsing runs entirely in your browser.
Copy the page source and paste it here. We read only the heading tags (h1–h6); nothing is uploaded or executed.
Results
Why heading order matters
Screen-reader users navigate a page by its headings the way sighted users skim it with their eyes — jumping heading to heading to find the part they want. When levels are skipped (an h2 followed straight by an h4) or the page has no h1, that mental map breaks: a gap reads as a missing section. Good heading structure is also one of the oldest SEO signals, so this is one of the few accessibility fixes that helps two audiences at once.
This checks the levels and their order, not whether each heading's wording is a good description — that still takes a human. For a whole live page instead of one pasted snippet, use our free scanner, or check the images' alt text while you're here.
Other free checkers
Screen reader preview
Paste your HTML and read it the way a screen reader speaks it — every heading, link, image, button and field in announcement order, with the lines that tell the listener nothing marked.
Accessibility statement generator
Fill in a short form and copy a ready accessibility statement — plain text or HTML, built on the W3C WAI structure, with EU “compliant” wording where it applies.
Alt text checker
Paste your HTML and check every image for missing, empty, redundant or file-name alt text against WCAG 1.1.1 — entirely in your browser.