Free SEO tools
Fix your SEO basics, right in the browser.
Small, focused tools built on the same engine that powers siteOS. No signup, nothing stored — the in-browser tools never leave your device, and the live ones fetch the URL you enter and nothing else.
Broken link checker
Enter a URL to test every internal and external link on the page and instantly see which are broken, redirected, or unreachable.
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Free SEO audit
Enter any URL for an instant on-page report — title, headings, links, images, structured data and more, graded by severity.
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Meta tags checker
Audit a live URL's title, description, canonical and social tags — or bulk-check titles, descriptions and slugs across your whole sitemap with CSV export.
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Google crawler simulator
Fetch any URL as Googlebot: indexability verdict, meta tags, JSON-LD, headings, raw HTML, and a cloaking diff against a regular browser.
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AI crawler checker
Test whether GPTBot, ClaudeBot, PerplexityBot, and 60+ other crawlers are allowed or blocked by your robots.txt — with the exact blocking line.
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Internal link analyzer
Crawl your sitemap (up to 500 pages) and map every internal link: orphan pages, click depth, internal PageRank, and a prioritized fix list.
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Sitemap URL extractor
Every URL from any sitemap or sitemap index — filter by section, sort by lastmod, export TXT/CSV. Works from a bare domain via robots.txt discovery.
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llms.txt generator
Build a curated llms.txt from your sitemap — real titles and descriptions, grouped by section, ready to download for AI search visibility.
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IndexNow submitter
Push every URL in your sitemap to Bing, Yandex, Naver and other IndexNow engines in one click — with key-file verification and per-engine status.
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Meta tags previewer & generator
Preview your Google search snippet and social share card, check title and description lengths, and copy production-ready meta tags.
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robots.txt validator & tester
Catch syntax errors, unsupported directives, and rules that block your whole site — then test any URL against any crawler.
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Sitemap XML validator & formatter
Paste or upload your sitemap.xml to catch malformed URLs, invalid lastmod dates, duplicates, and Google's size limits — with per-URL stats.
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JSON-LD structured data generator
Fill a form for Article, Product, LocalBusiness, FAQ, Breadcrumb and more — copy schema.org JSON-LD ready to paste, with required-field validation.
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These tools check one thing. siteOS checks everything.
Continuous crawls of your whole site — broken links, meta tags, sitemaps, structured data — with alerts when something breaks.