Is xBrowserSync safe?

Clean risk

xBrowserSync encrypts bookmark data locally and sends it to api.xbrowsersync.org for synchronization.

After the user enables sync, the extension converts bookmarks into records with titles, URLs, descriptions, tags, and child bookmarks. It compresses and encrypts that JSON locally before uploading the encrypted blob to the configured xBrowserSync service, which defaults to api.xbrowsersync.org.

xBrowserSyncv1.5.2Firefox Add-ons
0Risk
Who publishes it

xBrowserSync - no other listings under this identity

What this publisher told the store about itself, and the other listings that told it the same thing.

Publisher
xBrowserSync

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 1.5.2. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Read and change your data on every site you visit

    http://*/ and 1 more

  • Act on the current tab, but only after you click the extension

    activeTab

  • Schedule its own background tasks

    alarms

  • Read and change your bookmarks

    bookmarks

  • Show you desktop notifications

    notifications

  • Store data in your browser

    storage

  • See the address and title of every tab you have open

    tabs

  • Store an unlimited amount of data in your browser

    unlimitedStorage

Where it sends data

Destinations our analysis observed xBrowserSync contacting. Sending data somewhere is not a finding on its own - an extension that syncs your settings has to talk to its own server - but it is where your data can go, and who else it goes to.

  • api.xbrowsersync.org

    xBrowserSync sends data to api.xbrowsersync.org. No other extension we have analysed sends data here.

Updated 30 September 2026amo-1001698