Free tool

On-Page SEO Analyzer

A full on-page audit of any URL — around 40 checks across meta tags, content, heading structure, images, links, technical setup and structured data, scored and grouped by priority. The same checks I run manually at the start of any engagement.

Fetches the page once and analyses the HTML. Nothing is stored. Some sites block automated requests.

0SCORE
0Passing
0Worth fixing
0Problems

What it checks

Six areas, roughly forty individual checks:

What it deliberately doesn't do

It won't show backlinks, keyword volumes, competitor rankings, or traffic estimates. Those require enormous proprietary crawl databases — the kind Ahrefs and Semrush spend years and serious money building. Any free tool claiming to provide them is either estimating loosely or scraping.

What this does cover is everything you can determine from the page itself, which is where most fixable problems actually live.

Related tools: SERP snippet preview, canonical health, AI crawler access, social share preview.