SEO & crawling 18 tools
On-page checks, schema, crawling and indexing, links and redirects: the technical SEO basics, each as one free check. Start with the SEO audit; the other tools go deeper on what it finds.
Runs the SEO audit. Every other tool on this page opens with the same address filled in.
In the full report
These tools are the SEO and Structured data modules, split out.
The full report runs the on-page, crawling and schema checks together, scores them and lists the fixes that cost the most points first.
Rings show a sample report, not your site.
Run a free reportOn-page & schema
- SEO audit40+ on-page checksProblems ranked by points lost
- Schema markup validatorJSON-LD and rich resultsErrors and rich-result eligibility
- Canonical checkerSelf, cross-domain and chainsThe canonical and what disagrees
- Hreflang checkerIncluding return linksLanguage matrix with return links
- Schema markup generatorRuns on your computerJSON-LD for 8 common typesCopy-ready JSON-LD
- Hreflang generatorRuns on your computerTags for every language versionValidated hreflang tags to copy
- JavaScript SEO auditNewWhat Google actually rendersHTML vs rendered page, field by field
Crawling & indexing
- Log file analyzerRuns on your computerGooglebot and AI bots in your logsBot hits per page, verified bots
- robots.txt testerTest URLs against your rulesOne verdict: indexable or not
- Sitemap checkerFormat and status of every URLProtocol errors, sample page status
- Bulk URL checker1,000 URLs at onceStatus, redirect, title per URL, CSV
- XML sitemap generatorUp to 100 pagesA sitemap.xml of indexable pages
- Website change monitorAlerts when a page changesAn email when the text changes
Links & redirects
- Broken link checkerUp to 150 links per pageBroken, redirecting and fine links
- Redirect checkerEvery hop, status and timeEvery hop with its status code
- 301 redirect generatorRuns on your computer.htaccess, nginx, CloudflareRules for 6 servers and platforms
- 301 redirect map validatorOld URLs to new URLsA verdict per old and new URL pair
“Runs on your computer” tools never upload your files or text.
Fix what the tools find
All 123 Technical SEO guides →- SEO18 min read
'Crawled - currently not indexed': what it means and how to fix it
Google fetched the page, read it and left it out of the index. What the status means next to its neighbours in the Page indexing report, the causes in order of likelihood, a raw-HTML test you can repeat, and the fix per platform.Updated 20 Oct 2026 - SEO13 min read
What is SEO? Search engine optimization in plain language
SEO is the work of making your pages easy for search engines to find, understand and recommend. What it covers, what it costs and where to start.Updated 12 Oct 2026 - SEO11 min read
Favicon and touch icons: sizes and formats that work everywhere
Four files cover every browser tab, Google result, iPhone home screen and Android install prompt. The sizes, formats and link tags, one script to generate them, and how to check the result.Updated 4 Oct 2026
Questions about SEO & crawling tools
Which SEO tool should I start with?
The SEO audit. It reads the page and its site files the way a search engine does and ranks every problem by the points it costs. The other tools go deeper on one thing it flags, such as canonicals, hreflang, redirects or the sitemap.
Do these tools crawl my whole site?
Most check one page and the site files it depends on, like robots.txt and the sitemap. The XML sitemap generator follows links across the site, the bulk URL checker takes up to 1,000 addresses and the 301 redirect map validator checks every old and new URL pair you paste.
Is this the same as Google Search Console?
No. Search Console shows what Google has already crawled and indexed. These tools check the page as it is right now, so you can confirm a fix before Google comes back, and you can check any site, not only your own.
Which tools run without uploading anything?
The log file analyzer and the schema, hreflang and redirect generators run on your computer. Your log files and typed data never leave the browser.
Want all of them at once?
The full report runs the speed, SEO, security, accessibility, schema and social checks together.