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The Chrome extension exports everything on your X bookmarks page to a local file. No login, no data leaving your machine.
Install extension
On https://x.com/i/bookmarks, with extension open, click Export
If your account gets suspended tomorrow, your bookmarks are gone. This prevents that.
I also built a viewer if you want to search, tag, and browse your exports like an actual library — offline, no account needed. $4.69/year for the viewer, but the exporter is fully standalone if you just want the backup.
Free Chrome extension: https://chromewebstore.google.com/detail/x-bookmark-exporter/dmnjciohjaneghgolilbhdlbcbncfghl
Viewer: https://x-archive.netlify.app/
▶ Video demo: https://www.youtube.com/watch?v=wIHj81BOdZ4