kondyt

7859.

Firefox seems to have problems around 8000 (or maybe it's just me?), so don't go there :).

If you do, and Firefox crashes at startup, you might need to delete (or better: rename) some files under .mozilla/firefox/<profile>/:

.mozilla/firefox/<profile>/sessionstore-backups/recovery.jsonlz4

.mozilla/firefox/<profile>/sessionstore-backups/recovery.baklz4

.mozilla/firefox/<profile>/sessionstore.jsonlz4

You'll obviously lose the tabs opened since the last start.

You can have a backup with Tab Session Manager (for Chrome too):

https://addons.mozilla.org/en-US/firefox/addon/tab-session-m...

https://github.com/sienori/Tab-Session-Manager/releases

That would be http://www.qtrac.eu/diffpdf-foss.html

There is a fork here: https://gitlab.com/eang/diffpdf