Is OneTab safe?

Clean risk

OneTab sends saved tab domains to Google's favicon service when it renders tab icons in the OneTab interface.

When OneTab displays saved tabs, it builds favicon image URLs for some non-local saved domains and loads them from Google's t2.gstatic.com favicon service. The request includes the saved site's normalized domain in a url query parameter, not the full page path or query string, and some common domains use bundled icons instead.

OneTab Teamv2.20Firefox Add-ons
0Risk
Who publishes it

OneTab Team - no other listings under this identity, 1 shared hostname

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

Publisher
OneTab Team

Shared hosts - 1 hostname

Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.

one-tab.com
Also called by 5 other listings, including Tabone, OneTab

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 2.20. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Store an unlimited amount of data in your browser

    unlimitedStorage

  • Store data in your browser

    storage

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

    tabs

  • Run its own code inside the pages you visit

    scripting

  • Add items to the right-click menu

    contextMenus

Where it sends data

Destinations our analysis observed OneTab 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.

  • t2.gstatic.com

    OneTab sends data to t2.gstatic.com. 2 other extensions we have analysed send data here.

Updated 30 September 2026amo-525044