What is an HTML SEO audit?
An HTML SEO audit checks the source code of a page for common on-page and technical signals. It is useful when you need a fast review without running a full crawler.
What this on-page SEO checker analyzes
The report checks title and meta description presence, canonical tags, robots meta directives, heading counts, heading hierarchy, links, image alt attributes, visible word count and JSON-LD blocks.
How to use the HTML SEO audit tool
Paste the page HTML, add the base URL when you want internal and external links separated, then run the audit. Use the findings as a QA checklist and confirm important changes in your wider SEO workflow.
Why source-level SEO checks matter
A rendered page can look correct while its HTML still contains duplicate titles, multiple canonicals, missing alt attributes or unexpected crawler directives. Source inspection helps catch these issues early.
Frequently asked questions
It is a focused HTML source audit. It analyzes the HTML you paste and does not crawl a whole website.
No. The core analysis runs in your browser from the supplied HTML.
It checks title, meta description, canonical, robots meta, heading structure, links, image alt attributes, visible word count and structured data blocks.