Free tools for SEO, GEO and AI-readiness
7 English tools built by the Chạm AI team, free with no sign-up: audit any website on 25 SEO + GEO checks, generate llms.txt and JSON-LD schema in 1 minute, see exactly which AI crawlers your robots.txt blocks, and calculate the ROI of a 24/7 AI agent.
SEO + GEO Audit
Enter a URL and get 2 scores in 15 seconds: classic SEO (title, meta, H1, canonical...) and GEO - how ready the page is to be cited by ChatGPT, Gemini and Perplexity (schema, FAQ, llms.txt, AI-crawler access). 25 checks, each failed item with a fix.
Run the audit → ⚔️Compare 2 URLs
Paste your page and a competitor's - both get scored on the same 25 SEO + GEO checks, with a row-by-row duel table showing exactly where you win, where you lose and what to fix first to pull ahead.
Run the duel → 📄llms.txt Generator
Fill in your site name, description and key pages and get a standards-compliant llms.txt file to place at your website root - so AI models grasp your brand and best content correctly. Runs 100% in the browser; nothing is uploaded.
Generate the file → 🖼️OG Image Checker
Paste a URL and see the exact share preview for Facebook, X and LinkedIn, plus 7 checks on the og:image - missing tag, dead file, relative URL, wrong size or ratio, heavy weight. Fix the card before you share the link.
Preview your link → 💰AI Agent ROI Calculator
Enter 5 numbers from your business - monthly conversations, missed-reply rate, close rate, order value, agent cost - and instantly see the revenue lost to slow replies and whether a 24/7 AI agent pays for itself.
Calculate ROI → 🧩Schema Generator
Fill in a form and get schema.org-standard JSON-LD for Organization, Article/BlogPosting and FAQPage - the 3 schema types that matter most for AI search. Copy the code with its script tag and paste it into your page's head.
Generate schema → 🤖AI Crawler Checker
Paste a domain and see the status of 15 AI and search bots in your robots.txt - GPTBot, OAI-SearchBot, ClaudeBot, PerplexityBot, Google-Extended, Googlebot... - allowed, partially blocked or fully blocked, with a plain-language verdict.
Check your bots →Looking for more tools?
The Vietnamese tools page carries the full set of 11 tools, including a keyword suggester, a schema JSON-LD generator, an OG share-image checker, a URL comparison tool, an AI Agent ROI calculator, an event budget estimator, a content analyzer and a social listening tool. They work on any website - the interface is simply in Vietnamese. Want to know what to fix first? Start with the SEO + GEO Audit, then read what GEO is and what llms.txt is on our blog.