crawler4seo
What crawler4seo is
crawler4seo is a free, local-first tool for technical SEO and GEO audits on Linux, macOS and Windows. One crawl runs 20 SEO and GEO analyzers, including internal-link, structured-data, Core Web Vitals and AI-readiness checks. Its link graph calculates PageRank, HITS, connected components and click depth with breadth-first search. JSON-LD validation includes @graph and checks Google Rich Results eligibility across 15 or more types. GEO analysis reviews AI-crawler robots.txt rules, llms.txt, schema coverage, JavaScript rendering risk and citation-friendly content, producing a score from 0 to 100. Core Web Vitals use CrUX field data through Google PageSpeed Insights for LCP, INP and CLS. A native MCP server lets Claude or another MCP client query crawl data. Results export to self-contained HTML or multi-sheet XLSX, while crawl comparisons and scheduled baselines flag changes and regressions. Data is kept in a local SQLite file, according to the maker.
Who it suits
crawler4seo is aimed at developers and tech agencies, including client audits requiring NDA-safe handling. It suits users who want crawl data kept on their own machine.
What it does well
- Runs 20 SEO and GEO analyzers per crawl
- Internal-link graph includes PageRank and HITS
- Checks JSON-LD and Rich Results eligibility
- Exports HTML audits and XLSX workbooks
- Local SQLite storage, according to the maker
What to know first
- Keyword research is not included
- No backlink analysis
- Free pricing is described as early access
- No free trial is listed
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free during early access | Free while in early access · Unlimited URLs | Free |
| Free while in early access | Unlimited URLs · no account · no URL cap | Free |
As crawler4seo.com lists them, read 20 Sept 2026. The maker's own page has the final word.
Verdict
crawler4seo brings technical SEO, GEO and crawl comparison into a local application. Its analyzer coverage, MCP access and local storage support developer-focused audits without sending crawl data away, according to the maker.
Facts from crawler4seo's own pages
- Analyzers
- The product runs 20 SEO and GEO analyzers in one crawl. · crawler4seo.com, 12 Oct 2026
- Backlink analysis
- No · crawler4seo.com, 20 Sept 2026
- Core Web Vitals integration
- Core Web Vitals use real CrUX field data through Google PageSpeed Insights, including LCP, INP, and CLS. · crawler4seo.com, 12 Oct 2026
- Crawl comparison
- The tool can diff crawl files to show pages added or removed, issues opened or resolved, and PageRank shifts. · crawler4seo.com, 12 Oct 2026
- Data storage and privacy
- Crawl data is stored in a local SQLite file, and the maker says it does not leave the user's machine. · crawler4seo.com, 12 Oct 2026
- Exports
- Crawls can be exported as a self-contained HTML audit or as a multi-sheet XLSX workbook. · crawler4seo.com, 12 Oct 2026
- Free plan
- Yes · crawler4seo.com, 20 Sept 2026
- GEO checks
- The GEO audit checks AI-crawler robots.txt rules, llms.txt, schema coverage, JavaScript rendering risk, and citation-friendly content, and produces a score from 0 to 100. · crawler4seo.com, 12 Oct 2026
- Intended users
- The maker describes crawler4seo as built for developers and tech agencies, including client audits that require NDA-safe handling. · crawler4seo.com, 12 Oct 2026
- Internal link analysis
- Its internal-link graph includes PageRank, HITS, connected components, and click depth calculated with BFS. · crawler4seo.com, 12 Oct 2026
- Keyword research
- No · crawler4seo.com, 20 Sept 2026
- Maker and license
- The site names Simo Bain as the maker and describes crawler4seo as MIT-licensed. · crawler4seo.com, 12 Oct 2026
- MCP integration
- A native MCP server lets Claude or another MCP client query crawl data conversationally. · crawler4seo.com, 12 Oct 2026
- Product
- crawler4seo is a local-first SEO and GEO audit tool for crawling sites and analyzing technical SEO and AI-engine readiness. · crawler4seo.com, 12 Oct 2026
- Scheduled monitoring
- Scheduled crawls can compare new crawls with a baseline and flag regressions. · crawler4seo.com, 12 Oct 2026
- Site audit
- Yes · crawler4seo.com, 20 Sept 2026
- Structured data
- It validates JSON-LD, including @graph, and checks eligibility for Google Rich Results across 15 or more types. · crawler4seo.com, 12 Oct 2026
Where crawler4seo stands on Freedom251
- SEO tools#90 of 245