Edit: After reading the recommendations & arguments at arkenfox, I have opted to remove CookieAutoDelete as well as PrivacyBadger and CanvasBlocker. Instead I have:
- set Enhanced Tracking Protection to “Strict”;
- setup uBlock Origin to level “medium”;
- tweaked some extra
about:configentries as recommended here and here, except forprivacy.resistFingerprinting.
I’ll also consider setting network.cookie.lifetimePolicy to 2 for having all cookies session-only (apart from whitelisted ones).
I observe a much faster loading of the pages now!
cross-posted from: https://lemmy.ca/post/69883263
My preference is to immediately remove cookies from domains, as soon as (or just some seconds after) a tab with that domain is closed. Except some whitelisted domains specified by me.
To do this, I’ve used – for years – Cookie Autodelete. But I’ve discovered now that it doesn’t work with Firefox’s Strict Mode (the extension says “strict mode is not supported”).
All in all I think my understanding of Firefox’s capabilities and policies regarding cookies and similar extensions is outdated. I’d be grateful to anyone who can offer insights or links to well-informed sites about this.


i use temporary containers, might be slightly different from what you expect but it works very well for my usage and i recommend it
Thank you! Looking into it. To be honest I still don’t quite understand the idea behind it – I’m reading here and there to try to understand better.
This is almost certainly what OP wants.
Cookies are just one kind of persistent data. And some sites intentionally disrespect boundaries.