Edit: Meanwhile I've identified a problem.
My goal is to preserve data from open tabs across browser sessions. To accomplish this, I need to disable the "Clear Sites from last session on startup" setting.

However, this can lead to a situation where data from closed tabs is sometimes never deleted—especially with significant clearing delays and forced browser termination, both of which occur in my usage.

Therefore, it would be helpful to add a sub-option to "Clear Sites from last session on startup," such as "...but never clear sites in open tabs."


My first review:
Many thanks for this nice work. "Auto-Clear Site Data" is a worthy successor to CAD. Works perfectly for me.

To everyone complaining about missing source code: That's incorrect. Firefox add-ons are always open source by design—to read the complete code, simply download the add-on and unzip it.

Anyway, I must emphatically reject the author's flawed reasoning: The notion that concealing source code improves security is not only wrong—it demonstrates a fundamental misunderstanding of how security actually works. Obscuring code does not protect users; it only prevents security researchers and the community from discovering and fixing vulnerabilities. This is basic industry knowledge. Any developer with genuine expertise knows that open-source scrutiny increases security, while secrecy creates blind spots. The author's position, however well-intentioned, is both technically indefensible and counterproductive.

I were installed your extension on Android. It's worked, but i actually looking for "Auto-Clear" for specfic sites.

- It mean it's reverse filter option of `Exemption Lists`

- Can i request this feature ?. Or if you have git url of sourcecode. I can help with a PR.