#1
uBlock Origin
Raymond Hill
Finally, an efficient wide-spectrum content blocker. Easy on CPU and memory.
- Users
- 10.7M users
- Rating
- 4.80(21,889)
Store analytics
Firefox add-ons statistics
Store inventory, growth, ratings, publishers, new releases, removals, and leading products.
- Add-ons
- 67,913
- Themes
- 85,230
- Average rating
- 4.47
- Tracked daily
- 24h
Updated from the latest store crawl
Daily history snapshots
Leading Firefox add-ons
The most widely used Firefox add-ons in the current dataset.
67,913 results
#2
- Users
- 3M users
- Rating
- 4.38(11,390)
#3
Privacy Badger
EFF Technologists
Automatically learns to block hidden trackers. Made by the leading digital rights nonprofit EFF to stop companies from spying on you.
- Users
- 1.8M users
- Rating
- 4.81(3,099)
#4
- Users
- 1.8M users
- Rating
- 4.30(42,057)
#5
AdGuard AdBlocker
Adguard Software Ltd
Unmatched adblock extension against advertising and pop-ups. Blocks ads on Facebook, Youtube and all other websites.
- Users
- 1.7M users
- Rating
- 4.64(6,888)
#6
Dark Reader
Dark Reader Ltd
Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.
- Users
- 1.3M users
- Rating
- 4.49(6,878)
#7
DuckDuckGo Search & Tracker Protection
DuckDuckGo
⚡Protects your data. Private search with optional AI, private browsing, and ad blocking.
- Users
- 1.1M users
- Rating
- 4.34(2,358)
#8
Ghostery – Privacy Ad Blocker
Ghostery
The best privacy tool and ad blocker extension for Firefox. Stop trackers, speed up websites and block ads everywhere including YouTube and Facebook.
- Users
- 1M users
- Rating
- 4.43(5,629)
#9
- Users
- 1M users
- Rating
- 4.77(27,158)
#10
- Users
- 1M users
- Rating
- 4.22(3,531)
#11
Bitwarden Password Manager
Bitwarden Inc.
At home, at work, or on the go, Bitwarden easily secures all your passwords, passkeys, and sensitive information.
- Users
- 965.1K users
- Rating
- 4.60(9,289)
#12
- Users
- 905.1K users
- Rating
- 4.64(4,906)
#13
Facebook Container
Firefox
Prevent Facebook from tracking you around the web. The Facebook Container extension for Firefox helps you take control and isolate your web activity from Facebook.
- Users
- 759.6K users
- Rating
- 4.45(4,113)
#14
SponsorBlock - Skip Sponsorships on YouTube
Ajay (SponsorBlock)
Easily skip YouTube video sponsors. When you visit a YouTube video, the extension will check the database for reported sponsors and automatically skip known sponsors. You can also report sponsors in videos. Other browsers: https://sponsor.ajay.app
- Users
- 743.4K users
- Rating
- 4.81(3,152)
#15
To Google Translate
Juan Escobar
Right-click a section of text and click the Translate icon next to it to text translate or listen to it in your language.
- Users
- 659.4K users
- Rating
- 4.07(3,636)
#16
Language: Português (BR)
Firefox
Firefox Language Pack for Português (BR) (pt-BR) – Brazilian Portuguese
- Users
- 586.5K users
- Rating
- 4.65(292)
#17
TWP - Translate Web Pages
Filipe Dev
Translate your page in real time using Google, Bing or Yandex. It is not necessary to open new tabs.
- Users
- 563.3K users
- Rating
- 4.75(3,744)
#18
- Users
- 513.5K users
- Rating
- 4.26(1,097)
#19
- Users
- 489.8K users
- Rating
- 3.85(1,371)
#20
- Users
- 479.4K users
- Rating
- 4.56(983)
#21
Search by Image
Armin Sebastian
A powerful reverse image search tool, with support for various search engines, such as Google, Bing, Yandex, Baidu and TinEye.
- Users
- 431.6K users
- Rating
- 4.61(1,811)
#22
Easy Youtube Video Downloader Express
Dishita
A simple extension for superfast and easy YouTube downloads in FLV, 3GP, MP3, MP4, 720p, and 1080p formats.
- Users
- 357.6K users
- Rating
- 4.12(19,637)
#23
MetaMask – Crypto Wallet
MetaMask
The most secure wallet for crypto, NFTs, and DeFi, trusted by millions of users
- Users
- 314.4K users
- Rating
- 4.20(4,324)
#24
Reddit Enhancement Suite
honestbleeps
Reddit Enhancement Suite (RES) is a suite of tools to enhance your Reddit browsing experience.
- Users
- 295.9K users
- Rating
- 4.75(616)
#25
- Users
- 251.6K users
- Rating
- 4.31(107)
Imported source details
Firefox add-on statistics (Jul 2026)
Last updated: 2026-07-11How many Add-ons are in Firefox Add-ons Store: 67,913How many Themes are in Firefox Add-ons Store: 85,230 Total active users across active Firefox add-ons: 107M
About Firefox Add-ons Store
The Firefox Add-on Store is an online portal created by Mozilla, aimed at enhancing the functionality and personalization of the Firefox web browser. Established to serve users' growing needs, the Firefox Add-on Store offers an extensive collection of add-ons, themes, and extensions that can be conveniently installed to improve the browsing experience. The store provides both free and premium content, catering to a wide range of user preferences and requirements.Firefox extensions are compact software programs that expand the capabilities of the Firefox browser, integrating additional features and services directly into the browser environment. These extensions span various categories, from productivity tools like password managers and ad blockers to entertainment utilities such as video downloaders and game enhancements. By leveraging the power of extensions, users can tailor their Firefox browser to perform specific tasks efficiently, making their online activities more streamlined and enjoyable.In addition to extensions, Firefox themes allow users to modify the visual aesthetics of their browser. Themes can change elements like the browser's color scheme, toolbar icons, and background images, reflecting the user's personal taste or mood. By selecting from a diverse range of themes, users can ensure that their browsing environment is not only functional but also visually engaging. Through a combination of extensions and themes, the Firefox Add-on Store empowers users to create a browsing experience that is uniquely their own, fully customized to their needs and preferences.
Add-ons on Firefox Add-ons Store over time
The graph, updated as of 2026-07-11, shows the number of available Add-ons on Firefox Add-ons Store over time.
Themes on Firefox Add-ons Store over time
The graph, updated as of 2026-07-11, shows the number of available Themes on Firefox Add-ons Store over time.
How Chrome-Stats builds these statistics
Chrome-Stats calculates these counts from the latest stable daily snapshot of public Firefox Add-ons Store listing data. Each snapshot is available as a CSV download from the raw data export page, and includes active public add-ons that our crawler can discover through public extension store pages.These figures are third-party estimates rather than official totals from Firefox Add-ons Store. The data can be rounded, delayed, localized, region-specific, or temporarily unavailable. Chrome-Stats keeps historical snapshots and removed listings as obsolete. Some extensions or apps may not be shown on Chrome-Stats if a developer has requested removal from the website. Read the full data methodology.
Active user distribution of Firefox add-ons
The following graph shows the distribution of active user for all Firefox add-ons:
Development of active user since Firefox add-on launch date
To see how active user grow after Firefox add-on launch, we performed an analysis of all add-ons on Firefox Add-ons Store. For all add-ons launched in a certain month, we determined which percentage of them had more than 1,000 and 10,000 active user. This analysis is updated daily. The following graph shows how the percentage of add-ons that reaches each of those download milestones develops over time after launching the add-on:Active user per add-on since launch date
Monthly active user growth for Firefox add-ons
While the cumulative active user count tells you how popular a Firefox add-on is overall, monthly growth tells you whether momentum is building or fading. The following chart groups all active Firefox add-ons by how their active user count changed over the last 30 days, giving a snapshot of which add-ons are gaining traction and which are losing it.Monthly active user change distribution
Monetization model for Firefox add-ons
Firefox add-ons on Firefox Add-ons Store can be distributed in several ways — offered free of charge, sold for an upfront price, or made available for free with in-app purchases. The mix of monetization models gives a sense of how developers commercialize their work and what users typically pay for. The following chart shows the breakdown across all active Firefox add-ons.Monetization distribution
Manifest version adoption for Firefox add-ons
Browser extensions are built against a versioned platform contract called the manifest. Manifest V3 introduces stricter security and privacy boundaries (notably a service-worker background model and a declarative network-request API) and is replacing the older Manifest V2. The following chart shows how many active Firefox add-ons are running on each manifest version — a useful signal for developers tracking the platform migration and for users gauging how modern an extension's foundation is.Manifest version distribution
Rating distribution for Firefox add-ons
Firefox add-on ratings are a key metric that reflects user satisfaction and the overall quality of a Firefox add-on. These ratings range from one to five, where five stars indicate exceptional performance and user satisfaction, while one star points to significant issues or shortcomings. Users must have installed a Firefox add-on to rate it and leave reviews, sharing their experiences and providing feedback that can help other potential users decide whether to install the extension. These ratings also serve as valuable input for developers, guiding them to make improvements and address any issues.Average rating distributionsRating count distributions
Update frequency for Firefox add-ons
The "Last Updated" time for Firefox add-ons is a crucial piece of information displayed on each add-on's Firefox Add-ons Store page. This timestamp indicates the most recent date the add-on was updated by its developers, providing users with an idea of how actively the add-on is being maintained and improved. Regular updates often signify that developers are actively squashing bugs, enhancing security, and adding new features, which can significantly improve the user experience. Conversely, extensions that have not seen updates in a long time might be outdated, potentially less secure, or incompatible with the latest versions of Firefox.Last updated distributions
Newly added Firefox add-ons
The "Creation Date" of Firefox add-ons indicates when they were first published on Firefox Add-ons Store. This information helps users understand how long an add-on has been available and its maturity level. Newer add-ons might offer innovative features but could have more bugs or less community feedback, while older add-ons have had more time to establish their reputation and refine their functionality. The following chart shows the distribution of Firefox add-ons by their creation date.Newly added distributions
Category distribution for Firefox add-ons
Firefox add-ons are organized into categories on Firefox Add-ons Store to help users find tools that serve specific purposes. These categories reflect the diverse functionality that add-ons can provide, from productivity and accessibility tools to entertainment and shopping assistants. The category distribution gives insights into which types of add-ons are most prevalent and potentially most in demand by users. The following chart shows the distribution of Firefox add-ons across different categories.Category distributions
Size distribution for Firefox add-ons
The file size of a Firefox add-on can vary significantly depending on its features, assets, and complexity. Smaller add-ons typically offer lightweight tools, whereas larger ones might include high-resolution media or robust capabilities. The following chart shows the distribution of Firefox add-ons by their file size.Size distributions
Common permissions used by Firefox add-ons
Permissions define what capabilities and access a Firefox add-on has on your device or browser. These can range from accessing the network and storage to modifying content and communicating with external servers. Understanding which permissions are commonly requested provides insights into the typical functionality of add-ons and potential privacy and security considerations. The following chart shows the most common permissions requested by Firefox add-ons.Common permissions