Free SEO tools
12 free checks for any page. Paste a link, pick a check and get a plain answer. No signup.
Technical SEO
Crawlability, indexing and structured-data checks straight from the crawler.
8 tools
- Robots.txt TesterCheck whether a specific URL is allowed or blocked by a site's robots.txt rules, using the same Google-style rule matcher our crawler runs on — plus a template-based generator for writing a correct file.
- Sitemap CheckerFind and validate a sitemap.xml — malformed entries, unreachable URLs, robots.txt contradictions, and the child sitemaps behind an index.
- Schema Markup ValidatorValidate a page's JSON-LD, microdata and RDFa, including @graph and multi-item schema, and see what each rich result still needs.
- Redirect CheckerFollow a URL's full redirect chain and see every hop, status code, loop and the final destination, plus how its http, https and www versions redirect.
- Canonical URL CheckerSee where a page's canonical points, whether it's self-referencing, missing or conflicting, and whether the target is live and indexable.
- Noindex CheckerCheck a page's meta robots tags and X-Robots-Tag header for noindex and nofollow, and whether robots.txt hides them from Google.
- Hreflang CheckerValidate a page's hreflang codes, x-default and self-reference from its HTML, headers and sitemap, and confirm alternates link back.
- llms.txt CheckerValidate a site's llms.txt and llms-full.txt, see which AI crawlers its robots.txt allows, and check key pages have text without JavaScript.
On-Page & Content
How your page actually reads — to Google, and to a human scanning search results.
3 tools
- Meta Tag CheckerPreview your title and meta description as a search result on desktop and mobile, measured in pixels, and check the meta tags that matter.
- Keyword Density CheckerSee how often a keyword and its variants appear in a page's title, headings, body text, alt text and URL, plus its most used phrases.
- Open Graph CheckerPreview how a page looks when shared on X, LinkedIn, Facebook, Slack and Discord, and check its Open Graph tags and share image.
Outreach
Find the right person behind a page before you pitch them.
1 tool
On the way
- Free SEO Audit
- Website Speed Test
- SSL Certificate Checker
- Broken Link Checker
- Mobile-Friendliness Checker
These check one page. The site audit checks them all
TaskGlaze runs the same checks across every page of your site on a schedule, ranks the issues by how much they cost you and writes out each fix.