Free tools
Free SEO tools, no account needed
Ten checks that answer instantly and ask for nothing. No sign-up, no card, no email. Most of them work on content you paste, which is why they are free and why they cost you nothing to run.
No sign-up, no card, no email address.
robots.txt tester Check which of your pages each crawler can reach, before you find out the hard way.
Open Schema validator Find out whether your structured data actually works, not just whether it exists.
Open Title and meta description preview See your search result the way a customer will, before it goes live.
Open hreflang checker Catch the hreflang mistakes that fail quietly, with no symptom you would ever notice.
Open Sitemap validator Check your sitemap is readable before you rely on it to get pages found.
Open Image alt text auditor Find the images your page is not describing, for search or for a screen reader.
Open JavaScript visibility checker See what a crawler sees when your JavaScript has not run yet.
Open Link preview checker See the card people get when they share your page, before they share it.
Open Heading outline checker See the outline of your page the way a search engine and a screen reader build it.
Open Redirect chain tracer Follow a URL to where it actually ends up, one hop at a time.
Open
Want the whole picture instead?
These check one thing each. If you want the whole picture of a site in one report, the free audit does that.
Each tool above answers one question about one page. The free audit reads your whole site, scores it, and tells you which findings are actually costing you customers rather than listing everything at once.