FREE · OPEN SOURCE · TECHNICAL SEO

Everything on the internet starts with a crawl.

We build free tools to analyze and improve it.

CrawlGram makes open-source tools for crawl analysis, technical SEO and AI search. They run on your computer, and your data stays with you.

Illustration of a small blue crawler robot following a dotted path from one web page to the next.

Why the crawl matters

Before Google or an AI assistant can show your page, it has to find it, fetch it and understand it.

If any of these steps fails, the rest of your SEO work can't help. Our tools show you what happens at each step, so you can fix problems early.

  1. Discovery
  2. Crawl
  3. Render
  4. Extract
  5. Index
  6. Retrieve
  7. Generate
  8. AI answers

Available now

CrawlVault: keep your crawl data

A free Chrome extension that saves your Google Search Console crawl stats in your browser, so you can see months or years of crawl history.

  • Free
  • Open Source
  • Runs in your browser
  • Chrome extension

Daily crawl history

Crawl requests, download size and response time for every day, joined across backups with no gaps or duplicates.

Every breakdown

See requests by response code, file type, crawl purpose, Googlebot type and host.

Any date range

Pick a month or any start and end date. Compare with the previous period.

All your sites

Your Search Console sites load automatically. Back up one or all of them.

Latest: v1.0.0 ·

Our tools

Every tool is free, open source and does one job well.

Free and open source

All our tools are free, and the code is public.

You can read it, change it and use it in your own work. If something breaks or is missing, tell us on GitHub.

Built by The SEO Central team

The SEO Central teaches technical SEO and AI search. CrawlGram builds the tools.

When our research runs into a problem that needs software, we build the tool and release it here for free.

  • The SEO CentralTeaches technical SEO and AI search
  • CrawlGramBuilds free tools for it