On-page SEO·Chrome · Firefox · Safari
SerpCtrl Ultra
Browser-native SEO toolkit
Free
Free
Eight on-page tools in one Chrome extension: schema, meta, headings, link map, word cloud, page audit, AI-bot robots.txt check, LLM visibility diff. Everything runs in your active tab. Nothing leaves the browser.
- All tools are free
- AI-bot robots.txt audit (GPTBot, ClaudeBot, Perplexity, +17)
- LLM visibility: raw HTML vs rendered DOM diff
- Schema.org validation with type-specific rules
- One palette, one keyboard click
Site audit·macOS · Windows
SerpCtrl // Crawler
Desktop site crawler
Free
Free for first 100
Free desktop site crawler for the first 100 users. Point it at a URL and let it spider, or feed it a list. Out comes one XLSX: status codes, indexability, meta, headings, schema audit, link counts.
- Free for the first 100 users
- Unlimited URLs
- Native .app and .exe, packaged with PyInstaller
- Respects robots.txt; configurable worker pool
- Schema audit per page: count, types, status, issues
- XLSX export, frozen header, autofilter