Header Tag Checker
Checks the H1–H6 hierarchy is sequential and no heading is empty.
What this tool checks
Heading levels not skipped
Checks headings descend in order without skipping a level (e.g. H2 → H4).
Why it matters: A consistent heading outline helps assistive technology and search engines understand document structure.
If it fails: Do not jump heading levels; increase by at most one level at a time.
No empty headings
Checks there are no heading elements without text content.
Why it matters: Empty headings add noise to the document outline and confuse screen-reader navigation.
If it fails: Remove empty heading tags or give them meaningful text.
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- H1 CheckerChecks the page has an H1 heading and flags pages that use more than one.
- HTML Lang Attribute CheckerChecks <html> declares a valid lang attribute.
- Image Alt Tag CheckerScans every image on the page for a missing alt attribute.
- Keyword Density & Consistency ToolShows how your top keywords are distributed across title, meta and headings.