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Operating System you are using
Tor Browser version
Tor Browser Security Level
Step by step of how you got to the issue, so we can reproduce it (e.g. I opened the browser, typed a url, clicked on (i) icon, then my browser crashed)
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OS: Manjaro Linux 26.04; Gnome; Linux 6.18.18-1-MANJARO kernel
TB Ver 15.0.8
TB security Level: Standard
I appreciate that bookmarks are not the highest level of security / privacy. However, I keep a minimal number of bookmarks which I occasionally like to back up to USB. On opening manage bookmarks manager today to make backups, trying both export to html and backup; TB crashed / closed down without any option to export or save. The last occasion I managed to backup / export was Nov 2025. Not sure if this is a bug or if about:config needs changes? Any help would be appreciated. Thanks.
I can’t replicate this on Linux Mint 22.3 with 15.0.8, I can backup bookmarks just fine.
Have you messed with any about:config settings yourself? Do you see Tor Browser’s automated bookmark backups in the <profile directory>/bookmarkbackups directory? Your profile directory is the “Root Directory” listed at about:profiles. If they are present there you can manually copy the latest to your USB stick as a workaround. Mozilla uses the lz4json format to compress automated bookmark backups (as .jsonlz4 files) but you can decompress them to plain JSON with the lz4json binary if you need to. It’s available in the Ubuntu packages, I’ve not checked whether it is available from pacman but here is the repo.
If you can manually save your current bookmarks, as above, and the problem with Bookmark Manager doesn’t occur in a fresh installation, it is very likely a problem with your current installation’s settings (or maybe the sqlite DB that stores bookmarks is corrupt). Best solution then may then be to migrate any custom settings and your bookmarks to a new install of Tor Browser. So long as you don’t have your current browser running you should be able to install and run a fresh copy of Tor Browser for your OS/architecture and test Bookmarks Managers works.
I did think about checking about:config but decided to see what comments and advice I’d get from the forum first. I’ve now checked bookmarkbackups is set to true. And yes, bookmarks are shown in /.local/share/torbrowser/tbb/x86_64/tor-browser/Browser/TorBrowser/Data/Browser/profile.default/bookmarkbackups and are current. lz4json is available on pamac and I have the github you linked. Thanks. I’ll copy the current bookmarks to my USB as a precaution before looking at a new installation. I do recall that last time I installed, using torbrowser launcher (Ver 0.3.7-4), i really struggled to get torbrowser. Nonetheless, thanks for the help and advice.