favicon-customizer

Name: favicon-customizer
Rating: 3.1735 (98 reviews)
Author: muffinresearch

This extension allows you to customize the favicon for a given url.

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Favicon Customizer is a handy Chrome extension designed to let you personalize the favicon for any given URL. It's especially useful when you manage multiple versions of the same website—for example, different Gmail or Google Calendar accounts for work and personal use.

By assigning unique favicons, you can quickly identify each tab at a glance without confusion. Note that after changing a favicon, the update takes effect once you reload the relevant browser tab. This tool enhances your browsing experience by making site differentiation effortless and visually clear.

Add-on Productivity Utilities

By:

Daily users:

Rating:

Version:

0.6 Last updated: 2020-10-09

Version code:

5113377

Creation date:

2017-11-20

Risk:

Permissions:

<all_urls>
tabs
storage

Size:

12.50KB

URLs:

Website

Full description:

Source:

Firefox Browser Add-ons

Data ingested on:

2025-07-14

Ranking

# 2,377 ▼ 15

Other rankings

#219 in Tabs ▼ 2 #111 in customize keyword 39 ▼ 2 #135 in customer keyword 14 #146 in custom feed keyword 15 ▼ 1 #147 in custom font keyword 33

User reviews

The Favicon Customizer add-on is praised for enabling users to assign custom tab icons, making tabs more recognizable especially for pinned or favicon-less sites. However, many users report issues with bookmark favicons not updating or reverting, limited support for wildcard URL patterns, and the need to be on the active tab for icons to show correctly. The add-on lacks clear user instructions, which hinders usability for some. It works well on Windows but can fail on Mac and newer Firefox versions, indicating occasional compatibility problems.

Pros

Allows customizing tab icons for better recognition of pinned tabs.
Easy to use for changing website favicons beside tab titles.
Helps keep bookmark toolbar cleaner by assigning icons to sites lacking favicons.
Supports setting custom favicons that improve visibility for users with many tabs.
Generally works well on Windows systems.

Cons

Does not change favicons in bookmarks reliably; bookmark icons often revert to original favicons.
Requires being on the active tab for the icon change to apply; icons can revert if tabs refresh in background.
Lack of clear instructions or documentation makes it difficult for average users to utilize effectively.
Does not work on some platforms like Mac OS Monterey and may have compatibility issues with certain Firefox versions.
No support for wildcard or multiple URLs per icon leads to repetitive configuration.

Recent reviews

Works perfectly for my use case: needing a few of my pinned tabs to be more recognizable. Note that the logo needs to stay square in shape, otherwise it will be stretched.

by Fi*****, 2025-05-07

by 退出*****, 2025-03-26

by 远离*****, 2025-02-13

View all user reviews ›

Extension safety

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.

favicon-customizer 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 Browser Add-ons, 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.

favicon-customizer 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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