Checkmarks

Name: Checkmarks
Rating: 4.7619 (252 reviews)
Author: Paul Neulinger

By: Paul Neulinger

Checks, sorts, formats bookmarks and loads favicons.

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Features & Capabilities

Checkmarks is a powerful Chrome extension designed to optimize and manage your bookmarks effectively. It scans your imported or synced bookmarks for invalid entries and loads favicons by opening bookmarks in configurable batches of tabs. This helps in visualizing and organizing bookmarks seamlessly.

With Checkmarks, you can also sort bookmarks and format titles to lowercase for a cleaner look. It provides a detailed list of request errors allowing easy manual review, update, or removal of broken bookmarks. The extension integrates smoothly within the bookmarks/history sidebar for quick access. Note that loading multiple tabs in parallel may consume considerable system resources, and manual deletion of favicon cache may be required to fully clear invalid favicons.

User Growth & Download Statistics

Add-on

By:

Daily users:

Rating:

Version:

1.6.1 Last updated: 2020-06-21

Version code:

5050051

Creation date:

2017-12-19

Risk:

Permissions:

Size:

355.44KB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-17

Compare stats and ranking:

Ranking

# 987 ▲ 1

Other rankings

#26 in Bookmarks ▲ 1

#146 in Other extensions ▲ 1

#29 in opportunity keyword 4 ▼ 1

#40 in loading keyword 25

#61 in format keyword 13

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For Developers

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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:

Paul Neulinger

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/checkmarks-web-ext/

User Reviews

Users praise Checkmarks for simplicity and effectiveness, especially with large bookmark collections (thousands). It offers quick one-button use, reliable performance, and the ability to pause and resume. It also improves bookmark visuals by reloading or ensuring favicons. The primary drawback repeatedly mentioned is high CPU usage during operation, so users are advised to let it finish without heavy multitasking.

Pros

Scales well to thousands of bookmarks
One-button, no-fuss operation
Reloads/ensures favicons for bookmarks (visual consistency)
Pause and resume functionality
Reliable and simply works

Cons

Can be CPU-intensive and resource-heavy during operation

Recent reviews

Out of 1300 favourited sites, it ignored 18 and had problems with 915. Overall not very successful but filled in some favicons.

by sk*****, 2026-04-17

отличный функционал

by Ya*****, 2026-02-23

Worked perfectly. Used most of CPU so best let it run to completion without doing other tasks

by Fi*****, 2026-02-11

View all user reviews ›

Is Checkmarks 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.

Checkmarks requires some sensitive permissions that could impact your browser and data security. 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.
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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.

Checkmarks has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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