Heading Order Checker

Audit HTML heading hierarchy for missing H1 tags, multiple H1s, skipped heading levels, empty headings, and outline clarity.

Upload a page, component, or template. Files are processed locally in your browser.
Paste HTML, then run the accessibility audit.

Free Online Heading Order Checker

Use this browser-based accessibility checker to review pasted HTML before release. Your input stays in your browser, and the report can be copied or downloaded for QA notes.