AO3 Progress Bookmark is a Chrome extension that offers a convenient way for readers to keep track of their progress while reading works on Archive of Our Own (AO3). Developed by cc, this free add-on falls under the category of Browsers and specifically belongs to the subcategory of Add-ons & Tools.

With AO3 Progress Bookmark, users can easily bookmark their progress at the exact page scroll position. This feature allows readers to bookmark up to 1000 AO3 works, ensuring that they can effortlessly pick up where they left off. Additionally, the extension provides a backup of the page content in case the AO3 service is down, preventing any loss of progress.

While AO3 Progress Bookmark offers optional UI enhancements, it is important to note that it is not intended to replace AO3's built-in bookmark feature. Instead, it serves as a temporary solution for managing multiple AO3 tabs and keeping track of reading progress. For permanent saving of AO3 works for future reference, it is recommended to use AO3's native bookmark feature.

Overall, AO3 Progress Bookmark is a valuable tool for avid AO3 readers who want to easily manage their reading progress and ensure they never lose their place in a work. Its intuitive interface and useful features make it a must-have extension for fans of AO3.