ContainMarks Firefox

ContainMarks

Natively and easily edit and open bookmarks in multi-account containers. Now works with Firefox Sync!

Features & Capabilities

ContainMarks is a Firefox extension that securely opens bookmarks in multi-account containers. It assigns random tokens to bookmarks for enhanced security. Privacy-focused, it doesn't collect any information and is licensed under the MIT License. Made with components from Container Bookmarks and Open URL In Container. Contribute to its development on the homepage.

User Growth & Download Statistics

Manifest V2 Add-on
By:
mikenrafter
Daily users:
13
Rating:
5.00
(2)
Version:
1.2.1 Last updated: 2026-05-14
Version code:
6261199
Creation date:
2021-11-12
Risk:
Very high risk impact Moderate risk likelihood
Permissions:
Size:
95.44KB
URLs:
Website
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-08-23
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
mikenrafter
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/containmarks/
Website:
https://gitlab.com/mikenrafter/containMarks

Permission Change History

2026-05-11: Version 1.1.5 → 1.2.0
Add Permissions: webNavigation webRequest webRequestBlocking management <all_urls>

User Reviews

This is honestly the best and really the only easy way to assign bookmarks to a container. That said, there is one thing that has been bugging me. For some reason bookmarks often break with a “Used an expired/invalid token” error, which means I have to manually reassign them. Would it be possible to add an option to relax the token retention policies? I have read about the attack vectors and understand the risks. I would be totally fine with this being an opt-in or advanced setting if it helps avoid bookmarks breaking so often.
by Jo*****, 2025-12-31

by 敬念*****, 2025-04-10
View all user reviews ›

Is ContainMarks Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

ContainMarks requires a lot of sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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  • High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******
  • High ****** ********* ** * ****** ******** ******** ********** * ******* ******* *****
  • Medium ****** ** ********* *** ******* ******** **** **** *********** *** ********* *** ********* ******* *** *****
  • Medium ******* ******* ************* ***** *** ** ******* *** **** ******* ****** ******** *******
  • Medium ******* ***** *********** ***** ****** ********* *** ***** ********* **** **** ************** *** ********
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

ContainMarks 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.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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