Rentgen is a Firefox extension designed for web development and IT professionals, focusing on tracking scripts present on websites. This free tool provides users with a clear visualization of tracking scripts, enabling them to understand the level of data tracking performed by various sites. Additionally, Rentgen assists in drafting an email to the website administrator, which can serve as a foundation for a GDPR complaint. Currently, the extension supports the Polish language, catering specifically to Polish website owners, with plans for future updates to include more languages.

This add-on is particularly useful for developers and privacy advocates looking to enhance their awareness of tracking practices on the web. By simplifying the process of communicating with website owners about data privacy concerns, Rentgen promotes transparency and accountability in web development. As it evolves, the inclusion of additional languages will broaden its accessibility, making it a valuable resource for users globally.