The official ymarks browser extension.
ymarks is a free and open-source service for a self-hosted cross-browser bookmarks synchronisation. You will need a running and accessible ymarks server component in order for this software to work.

ymarks: Self-hosted Bookmarks Sync
ymarks is the official Firefox add-on for synchronizing bookmarks using a self-hosted ymarks server. It is a free and open-source service that allows you to sync bookmarks across different browsers.
Add-on stats
Manifest V2
Firefox on Android: No
Permissions:
- bookmarks
- storage
- notifications
- <all_urls>
Size: 15.02K
Email: mo*****@tuxproject.de
URLs: Website
Full description: See detailed description
Other platforms
Not available on Chrome
Not available on Android
Not available on Edge
User reviews
nice try, but too complicated for me...what is an endpoint, what format does it need and why am i unable to dl and upload tabs?
by Firefox user 14427991, 2018-11-14
Does nothing but wipe out all of my Firefox bookmarks. It works fine in Chrome so I know I have the server properly configured.
EDIT: After trying to do some troubleshooting I discovered the server itself is also unstable and crashes. This is not a mature enough project to consider.
by Heptite, 2018-08-20
Add-on safety
Risk impact
ymarks requires a few sensitive permissions. Exercise caution before installing.
Risk impact analysis details
- Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- Medium ****** ** ********* *** ******* ******** **** **** *********** *** ********* *** ********* ******* *** *****
- Medium ******* ******* ************* ***** *** ** ******* *** **** ******* ****** ******** *******
- Low ******* ****** ** *** ********* ********
Risk likelihood
ymarks is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
- Medium **** ********* *** *** **** *******
- Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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