About
Crawlee is a production-grade web scraping framework for JavaScript and Python, designed to help developers build and maintain reliable crawlers at scale. Created by Apify — a team that scrapes millions of pages daily — Crawlee bundles best practices and common scraping infrastructure into a single, open-source library. Key capabilities include seamless integration with headless browsers via Playwright and Puppeteer, automatic proxy management and anti-blocking strategies, and a smart request queue that handles URL deduplication and retry logic out of the box. Crawlee also provides structured data storage, allowing scraped results to be saved as datasets and exported to JSON, CSV, or processed in-memory. The library offers a CLI scaffold tool (`npx crawlee create` or `uvx crawlee[cli] create`) to bootstrap new crawler projects instantly from battle-tested templates. Its clean API makes it easy to enqueue links, paginate sites, and process dynamic, JavaScript-rendered pages. Crawlee is ideal for developers building data pipelines, researchers collecting web data for AI/ML training, businesses monitoring competitor sites, and engineers who want a maintainable, scalable scraping solution without reinventing the wheel. It is forever free and open-source under active development.
Key Features
- Anti-Blocking & Proxy Management: Automatically handles proxy rotation, browser fingerprinting, and anti-bot evasion strategies to keep crawlers running reliably.
- Headless Browser Support: Native integration with Playwright and Puppeteer for scraping JavaScript-rendered, dynamic websites without extra configuration.
- Smart Request Queue: Built-in URL deduplication, retry logic, and link enqueueing allow crawlers to traverse entire websites systematically and efficiently.
- Structured Data Storage & Export: Save scraped results to local datasets and export as CSV, JSON, or access them programmatically for downstream processing.
- CLI Project Scaffolding: Bootstrap new crawler projects instantly using `npx crawlee create` or `uvx crawlee[cli] create` with production-ready templates.
Use Cases
- Building data pipelines that collect structured information from websites at scale for business intelligence or research
- Gathering training and fine-tuning datasets for AI and machine learning models by crawling public web content
- Monitoring competitor pricing, product listings, or news articles for ongoing business intelligence
- Automating data extraction from JavaScript-heavy, dynamic web applications that are inaccessible to simple HTTP scrapers
- Powering RAG (Retrieval-Augmented Generation) pipelines by continuously indexing fresh web content into a knowledge base
Pros
- Forever Free & Open Source: Crawlee is fully open-source with no usage limits, licensing fees, or paywalled features — suitable for any scale of project.
- Battle-Tested by Apify: Built by a team that scrapes millions of pages daily in production, so the library reflects real-world challenges and edge cases.
- Dual Language Support: Available for both JavaScript/TypeScript and Python, making it accessible to a wide range of developers and data engineering stacks.
- Handles Scraping Complexity Automatically: Proxies, blocking, retries, and browser management are handled out of the box, drastically reducing boilerplate code.
Cons
- Requires Developer Knowledge: Crawlee is a code-first library with no visual or no-code interface — users need JavaScript or Python skills to build crawlers.
- No Automatic Selector Repair: When target website structures change and selectors break, Crawlee does not auto-heal them — manual maintenance is required.
- Limited to Two Languages: Currently only supports JavaScript/TypeScript and Python; developers using other languages must seek alternative solutions.
Frequently Asked Questions
Is Crawlee really free to use?
Yes. Crawlee is forever free and open-source. There are no usage limits or paid tiers for the library itself, though you can optionally deploy crawlers on the Apify platform for managed hosting.
Does Crawlee support JavaScript-rendered (dynamic) websites?
Yes. Crawlee integrates natively with Playwright and Puppeteer to control headless browsers, enabling scraping of fully dynamic, client-rendered web pages.
What languages does Crawlee support?
Crawlee supports JavaScript/TypeScript and Python. Both versions offer similar APIs and capabilities, including headless browser crawling and data storage.
How does Crawlee handle anti-bot protection?
Crawlee includes built-in strategies for proxy rotation, browser fingerprint management, and request throttling to reduce the chance of being blocked by target websites.
How do I get started with Crawlee?
Run `npx crawlee create my-crawler` (JavaScript) or `uvx 'crawlee[cli]' create my-crawler` (Python) to scaffold a new project from a template, then follow the documentation at crawlee.dev.
