Crawl4AI
Open Sourceby UncleCode
★ 4.7 (203 reviews)
Crawl4AI is a free, open-source web crawler that turns any website into clean, LLM-ready Markdown and structured data.
Try Crawl4AI free
Completely free and open-source. No per-request fees when self-hosted.
We may earn a commission from this link, at no extra cost to you. Disclosure.
Last reviewed
Best for
Developers building RAG or agent pipelines who need free, scalable web-to-Markdown extraction.
What is Crawl4AI?
Crawl4AI is an open-source crawler and scraper built for AI pipelines. It renders JavaScript, extracts clean Markdown, and returns structured data ready for RAG and agents — without per-request fees. It is fully self-hosted and one of the most-starred AI scraping tools.
Key features
- ▹JS-rendering crawler
- ▹Clean Markdown output
- ▹Structured extraction
- ▹Async & fast
- ▹Self-hostable
- ▹LLM-friendly chunking
Pros
- +Free and open-source
- +No per-request fees
- +Built for LLM pipelines
- +Very popular
Cons
- −Code-first (Python)
- −You manage scaling and proxies
Crawl4AI pricing
Free tier: Completely free and open-source. No per-request fees when self-hosted.
Open Source
Free
- ▹Unlimited crawling
- ▹Self-host
How to get started with Crawl4AI
- 1 Run `pip install crawl4ai` then `crawl4ai-setup`
- 2 Import AsyncWebCrawler
- 3 Point it at a URL
- 4 Feed the Markdown into your RAG/agent
Try Crawl4AI free
Completely free and open-source. No per-request fees when self-hosted.
We may earn a commission from this link, at no extra cost to you. Disclosure.
Crawl4AI FAQ
Is Crawl4AI free for commercial use?
Yes. It is open-source and free to self-host with no per-request fees, which makes it well suited to production RAG and agent pipelines.
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