GDPR requires that all websites that provide services to European users must provide a complete report on the use of cookies to record user information and continue to use it with the express consent of the user.
There are several commercial Cookie Scanner online.
But we decide to make our implementation Open Source. Hope to help more people getting aware of the privacy problems.
Features:
1. Nice HTML or PDF report
2. Detailed cookie description (more than 10k cookie description in Open Database).
https://github.com/CovenantSQL/CookieTester
And I put it into CQL Database for easier usage.