Trace

Trace requires a free account at tracefiction.com before the extension can save stories.

Trace helps you keep track of what you saved, where you stopped, what you dropped, and what you meant to come back to.

The Trace extension works on AO3 and FanFiction.net while you browse. It adds small status labels to archive pages so you can see whether a fic is already in your library, what reading status it has, and where you left off.

You can add stories to your Trace library without leaving the archive. Saved stories sync to your Trace account, so you can find them later from your phone or laptop.

The extension popup also shows your personal notes and tags for saved stories, when you have added them in Trace.

Trace includes Collections, which let you group stories by theme, fandom, reading plan, recommendation list, or anything else you want to keep together. Collections can stay private or be shared with a public link.

Trace is an unofficial AO3 and FanFiction.net companion. Your library is private, story text is never collected, and there are no ads or data selling.

This extension is source-available at https://github.com/tracefiction/trace-browser-extension

Sign up free at tracefiction.com. The main features are free for up to 100 stories; Trace Unlimited removes the story cap and adds reading stats.