# Checkmarks

> Checks, sorts, formats bookmarks and loads favicons.

Canonical page: [https://chrome-stats.com/d/checkmarks-web-ext](https://chrome-stats.com/d/checkmarks-web-ext)

## Overview

- **ID:** `checkmarks-web-ext`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Paul Neulinger
- **Category:** bookmarks,other
- **Daily users:** 6,418
- **Weekly downloads:** 81
- **Rating:** 4.75 / 5 (256 ratings)
- **Version:** 1.6.1
- **Last updated:** 2020-06-21
- **First published:** 2017-12-19
- **Size:** 355 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/checkmarks-web-ext/)

## Description

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.

## Rankings

- #1,011 — Overall
- #28 — Bookmarks
- #142 — Other extensions
- #27 — opportunity
- #44 — loading
- #73 — format

## Permissions and access

### Permissions

- `<all_urls>`
- `bookmarks`
- `browsingData`
- `storage`
- `tabs`
- `webNavigation`
- `webRequest`
- `webRequestBlocking`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Low risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Review summary

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

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- [Firemarks](https://chrome-stats.com/d/firemarks) — 1 users, 4.00 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/checkmarks-web-ext)