Crawlee

Crawlee is an open-source web scraping and crawling library designed for both JavaScript and Python environments. It provides developers with a high-level framework to build robust, scalable scrapers that can handle the complexities of modern websites. At its core, Crawlee manages HTTP requests, headless browser automation, proxy rotation, and anti-blocking mechanisms automatically, allowing users to focus on data extraction logic rather than infrastructure. The library supports multiple crawling strategies. For JavaScript-rendered pages, Crawlee integrates seamless headless browsers via Playwright (or Puppeteer), enabling it to interact with dynamic content, handle client-side navigation, and execute JavaScript. For simpler static sites, it offers a lightweight HTTP crawler that is faster and consumes fewer resources. Users can switch between crawler types based on the target website’s requirements. Crawlee’s request management system handles concurrency, retries, and session persistence. It can automatically rotate user agents, IP addresses (through proxy pools), and browser fingerprints to mimic human browsing patterns, reducing the risk of IP banning. The library also includes built-in support for custom error handling, request timeout management, and adaptive crawling speed to avoid overwhelming servers. Data extraction is flexible. Developers can use regular expressions, CSS selectors, or XPath within the request handler. For more structured output, Crawlee provides pushData to store results as JSON, CSV, or other formats. It also includes a powerful enqueueLinks method that automatically discovers and queues new URLs from scraped pages, enabling recursive crawling with defined depth and pattern filters. Storage is abstracted through a key-value store, dataset, an