SEO On-Page Auditor

Paste a page's HTML (and optionally a base URL and a target keyword) to audit its technical elements: title, meta description, H1/H2/H3, canonical, robots meta, images missing alt text, and links classified as internal or external based on the base URL. The pasted HTML is never executed or rendered as a page: it's only analyzed as text. This is a technical/structural auditor — it doesn't compute a global 0-100 score (that's what the separate Content Authority Calculator is for).

Processed on your device, no AI

Paste a page's HTML to audit it.

This auditor only analyzes the HTML you paste, in your browser. It never crawls, never downloads the page, and never queries any external API. The HTML is never executed or rendered as a page.

The data is processed on your device and is never sent to the server.

Use cases

How to use this tool

  1. Paste the page's HTML
  2. Optionally add the base URL and a target keyword
  3. Review the generated technical checks

Frequently asked questions

Does it crawl my website?
No. It only analyzes the HTML you paste manually; it never downloads or crawls any URL.
Does it give a global score like the Content Authority Calculator?
No. It's deliberately different: this auditor shows per-element technical checks without combining them into a single number.

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