Free Tools

Free SEO Tools

Small tools that answer one question well. No sign-up, no API key, no credit card. The same engines ship in the open-source zens-ink CLI.

AI Crawler Check

Interactive

Can ChatGPT, Claude, and Perplexity read your site? Checks 17 AI crawler policies and your llms.txt layer, scores AI-readiness 0–100. Runs right in the browser.

Broken Link Checker

CLI

Crawl your site and find every dead link — 404s, redirect chains, broken images. CLI-powered, free and open source.

Sitemap Checker

CLI

Validate your sitemap structure, find orphan pages, and catch URLs that block indexing.