Website Health Check
Audit any page in one pass and get scores for SEO, accessibility, performance, security and mobile, with the exact fix for every issue.
Score any page across SEO, accessibility, performance, security and mobile in one pass, with a link to the tool that fixes each issue.
Enter a URL to audit its SEO, accessibility, performance, security and mobile setup in one pass.
Everything is judged from a single request, so there is no crawl and nothing is stored.
About the website health check
Paid audit tools charge for two very different things. One is data: a crawler index, a backlink database, keyword volumes. That genuinely costs millions to run. The other is analysis, which is reading one page carefully and knowing what to look for.
This is the second half, and it is free because it costs almost nothing to give away. One request fetches the page, and every check runs against that single response. Nothing is crawled, nothing is stored, and no account is needed.
Each issue links to the DevKit tool that fixes it, so a report is a starting point rather than a list of complaints.
How to use it
- 1Enter any public URL.
- 2Read the five scores.
- 3Work through the errors first, then the warnings.
- 4Follow the fix link on any issue to the tool that solves it.
- 5Re-run to confirm.
Questions
How is this different from Ahrefs or Semrush?
Those sell data: backlinks, keyword volumes, competitor rankings, all built on a web-scale crawl. This does the on-page analysis half, which needs no index at all. For that half the output is comparable, and it is free.
Does it crawl my whole site?
No. It fetches the one URL you give it. That keeps it fast and stops it behaving like a bot against your server.
How are the scores calculated?
Each category starts at 100. An error costs twice what a warning costs, scaled against how many checks that category ran. The overall score is the average of the five.
Is anything stored?
No. The page is fetched, analysed in your browser, and discarded when you leave. There is no account and no history.
Why can it not reach my site?
Either the site blocks unknown user agents, it sits behind a login, or it is on a private network, which is refused deliberately so this cannot be used to probe internal servers.