Privacy Crawler is a Chrome add-on developed by privacy-crawler. It is a powerful tool that allows users to crawl websites for cookies and fingerprinting.

With Privacy Crawler, users can recursively follow links from one or more pages and generate a detailed report. The report includes information about cookies, such as when they first appeared, their domains, expiry times, and values. Additionally, the report highlights any JavaScript code that could potentially be used to fingerprint the browser.

It is important to note that Privacy Crawler deletes all cookies in the current environment when starting a crawl. To avoid being logged out from all websites, it is recommended to run crawls in incognito mode. The extension also patches the JavaScript environment to optimize crawling by determining accessed functions and objects and speeding up time. To prevent any unexpected behavior on websites, it is advisable to enable the extension only during crawling sessions.

Privacy Crawler is a valuable tool for users who want to gain insights into website tracking and enhance their privacy online.