format_list_numbered
lock Free · Private · In-Browser
Heading Structure Checker
Paste page HTML and get a readable H1-H6 outline with warnings for missing H1s, multiple H1s, and skipped heading levels.
See your page outline at a glance
Visual design can hide heading mistakes. A page may look fine while the actual HTML jumps from H2 to H5 or repeats H1s unnecessarily.
This checker extracts headings into a simple outline so you can clean up content hierarchy before publishing.
Frequently Asked Questions
Why does heading structure matter?
Headings help readers, assistive technology, and search engines understand the structure of a page.
Is more than one H1 always bad?
Not always, but one clear H1 is the safest default for marketing and content pages.
Does this fetch my page?
No. Paste HTML directly so the check runs locally.
Take it further
SEO & Web Design Services
Need metadata, content structure, and technical SEO cleaned up across a full site? I can help.