Heading Visualizer - Free Online H1-H6 Outline Tool | IconVault
Paste HTML and see your H1-H6 headings as an indented tree. Flags skipped levels, multiple H1s and empty headings. Free, runs in your browser.
Heading Visualizer
See your H1-H6 outline and catch SEO issues
0 characters - parsed locally, nothing is sent anywhere.
5 of 5 free scans left.
Your heading tree appears here
Headings are the table of contents for screen readers and search engines. See your page the way they do.
About this tool
IconVault's Heading Visualizer shows your page the way search engines and screen readers see it. Paste HTML and it extracts every H1-H6 tag into an indented outline tree, so a broken document structure is obvious at a glance.
It automatically flags SEO and accessibility issues: skipped heading levels (jumping from H2 to H4), multiple H1s, an H1 after other headings and empty headings that screen readers announce with no name. You can copy the outline as plain text. It is free with no signup and runs fully in your browser. The honest caveat: it analyzes the HTML you paste, not your live site, so paste the rendered HTML (view source after JS runs) for single-page apps.
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