Cleanreads extension is a search tool designed to add a basic advisory content rating system inside of Goodreads. With Cleanreads, users can filter through book descriptions, shelves, and reviews to determine how likely a book is to be a clean read. The extension gathers all the relevant data used to determine the score, making it easy for users to review.

One of the key features of Cleanreads is the ability to create a "Clean List" where users can add book genres, lists, shelves, and individual books. When browsing, Cleanreads will automatically assign a full Cleanreads score to books that match the items in the Clean List. Users can also download and import these lists for saving and sharing clean books recommendations.

Cleanreads is a valuable tool for users who are looking for books with content that aligns with their preferences. With its simple yet effective rating system, users can easily find clean reads on Goodreads.