Best Best Firefox Add-ons 2026
The #1 best firefox add-ons in 2026 is Mozilla VPN Extension with a Nerq Trust Score of 57/100 (C), based on Nerq's independent analysis of 50 best firefox add-ons across 5 trust dimensions. Rankings update daily — last updated: 2026-06-28.
According to Nerq's analysis, the top 5 best firefox add-ons by trust score are: 1. Mozilla VPN Extension (57/100), 2. SponsorBlock - Skip Sponsorships on YouTube (57/100), 3. Quick Live News & Custom Web Search (57/100), 4. Ezy Photo Tab & Custom Web Search (57/100), 5. AdBlock for Firefox (57/100). Nerq Trust Scores range from 55 to 57 among the top 50. Scores are based on 5 independent trust dimensions including security, maintenance, and community adoption. Updated daily.
| # | Name | Trust | Grade |
|---|---|---|---|
| 1 | Mozilla VPN Extension | 57 | C |
| 2 | SponsorBlock - Skip Sponsorships on YouTube | 57 | C |
| 3 | Quick Live News & Custom Web Search | 57 | C |
| 4 | Ezy Photo Tab & Custom Web Search | 57 | C |
| 5 | AdBlock for Firefox | 57 | C |
| 6 | FoxyProxy Standard | 57 | C |
| 7 | AdGuard AdBlocker | 57 | C |
| 8 | Quick Recipe Hub & Custom Web Search | 57 | C |
| 9 | Ghostery – Privacy Ad Blocker | 57 | C |
| 10 | VPN VeePN - Free VPN for Firefox | 57 | C |
Top 50 Best Firefox Add-ons by Nerq Trust Score
| # | Name | Trust | Grade | Stars | Description |
|---|---|---|---|---|---|
| 1 | Mozilla VPN Extension | 57 | C | 56.3k | Get more from Mozilla VPN with the Firefox extension — currently available for Windows. Turn off VPN... |
| 2 | SponsorBlock - Skip Sponsorships on YouTube | 57 | C | 742.4k | Easily skip YouTube video sponsors. When you visit a YouTube video, the extension will check the dat... |
| 3 | Quick Live News & Custom Web Search | 57 | C | 32.0k | Add the Quick Live News & Custom Web Search extension to stay updated with headlines, videos, AI... |
| 4 | Ezy Photo Tab & Custom Web Search | 57 | C | 55.0k | Add the Ezy Photo Tab & Custom Web Search extension and click the icon on your toolbar to access... |
| 5 | AdBlock for Firefox | 57 | C | 1391.2k | The most popular ad blocker for Chrome and Safari, now available for Firefox! Block all advertiseme... |
| 6 | FoxyProxy Standard | 57 | C | 216.5k | FoxyProxy is an open-source, advanced proxy management tool that completely replaces Firefox's limit... |
| 7 | AdGuard AdBlocker | 57 | C | 1678.1k | Unmatched adblock extension against advertising and pop-ups. Blocks ads on Facebook, Youtube and all... |
| 8 | Quick Recipe Hub & Custom Web Search | 57 | C | 29.8k | Add the Quick Recipe Hub & Custom Web Search extension and access a wide variety of food recipes... |
| 9 | Ghostery – Privacy Ad Blocker | 57 | C | 1041.4k | The best privacy tool and ad blocker extension for Firefox. Stop trackers, speed up websites and blo... |
| 10 | VPN VeePN - Free VPN for Firefox | 57 | C | 99.8k | Enjoy fast and secure free Firefox VPN Proxy extension. Unblock websites, protect your data, and bro... |
| 11 | Easy Youtube Video Downloader Express | 57 | C | 364.5k | A simple extension for superfast and easy YouTube downloads in FLV, 3GP, MP3, MP4, 720p, and 1080p f... |
| 12 | Browsec VPN | 57 | C | 482.7k | Unblock geographically restricted content and protect your IP with Browsec’s add-on. With this Firef... |
| 13 | Adblock Plus | 57 | C | 3147.8k | One of the most popular free ad blockers for Firefox. Block annoying ads on sites like Facebook, You... |
| 14 | Firefox Translations | 55 | C | 63.6k | Translate websites in your browser, privately, without using the cloud. The functionality from this ... |
| 15 | Free VPN Proxy & Ad Blocker - Planet VPN | 55 | C | 87.0k | Secure your web browsing with Planet VPN - a free vpn proxy addon |
| 16 | Ruffle - Flash Emulator | 55 | C | 79.9k | Putting Flash back on the web. Designed to be easy to use, this extension will seamlessly enable yo... |
| 17 | ImTranslator: Translator, Dictionary, TTS | 55 | C | 104.2k | COMPLETELY REDESIGNED TRANSLATOR FOR FIREFOX ImTranslator translates text, words, webpages between m... |
| 18 | Free Download Manager official extension | 55 | C | 92.3k | Free Download Manager integration with your Firefox browser |
| 19 | 360 Internet Protection | 55 | C | 54.6k | This extension is web threat protection of 360 Total Security for Firefox. It identifies malicious U... |
| 20 | Adaptive Tab Bar Color | 55 | C | 51.7k | Changes the color of Firefox theme to match the website’s appearance. |
| 21 | Startpage | 55 | C | 213.5k | This extension protects users from being tracked while allowing them to search the web in complete p... |
| 22 | NordVPN - a VPN proxy extension for Firefox | 55 | C | 306.8k | Looking for the best VPN extension for Firefox? NordVPN's Firefox VPN proxy extension lets you hide ... |
| 23 | I still don't care about cookies | 55 | C | 114.7k | Community version of the popular extension "I don't care about cookies" https://github.com/OhMyGu... |
| 24 | Surfshark VPN Extension | 55 | C | 112.2k | Browse the web safely with secure, private internet access for the Firefox browser extension. |
| 25 | Browsing Protection by F-Secure | 55 | C | 198.6k | Extension for protecting encrypted browsing with security products by F-Secure. |
| 26 | Librezam | 55 | C | 34.8k | Open-source music recognition extension using Shazam API (also supports Audd, ACRCloud, Tencent, and... |
| 27 | Grammar and Spell Checker - LanguageTool | 55 | C | 433.5k | With this extension you can check text with the style and grammar checker LanguageTool. It finds man... |
| 28 | Qwant - Search engine | 55 | C | 79.9k | With this extension, Qwant becomes your default search engine on your browser! 🚀 |
| 29 | Ant Video Downloader | 55 | C | 74.5k | Browser extension with a companion application for downloading and merging streaming video segments. |
| 30 | ExpressVPN: VPN proxy for a better internet | 55 | C | 67.9k | Go online safely with blazing-fast speed. Spoof your location, access content anywhere, and control ... |
| 31 | Facebook Container | 55 | C | 862.0k | Prevent Facebook from tracking you around the web. The Facebook Container extension for Firefox help... |
| 32 | Firefox Multi-Account Containers | 55 | C | 417.1k | Firefox Multi-Account Containers lets you keep parts of your online life separated into color-coded ... |
| 33 | React Developer Tools | 55 | C | 188.1k | React Developer Tools is a tool that allows you to inspect a React tree, including the component hie... |
| 34 | vpn | 55 | C | 2.9k | Secure your online privacy and access content from around the world with our fast and easy-to-use VP... |
| 35 | AdBlocker Ultimate | 55 | C | 1229.2k | Completely remove ALL ads. No “acceptable” ads or whitelisted advertisers allowed. This free extensi... |
| 36 | Obsidian Web Clipper | 55 | C | 41.7k | Save and highlight web pages in a private and durable format that you can access offline. The offici... |
| 37 | SoundFixer | 55 | C | 45.4k | Helps you fix annoying sound problems on sites like YouTube: audio in one channel only, too quiet or... |
| 38 | iCloud Passwords | 55 | C | 154.6k | iCloud Passwords lets you fill passwords from iCloud Keychain when signing in to websites using Fire... |
| 39 | Saba Meeting Connector | 55 | C | 2.1k | Enables the user to launch into Saba Meeting events within Firefox. |
| 40 | OpiekunWEB | 55 | C | 2.7k | Extension for OpiekunWEB content filter application. |
| 41 | Grammarly: AI Writing and Grammar Checker App | 55 | C | 612.9k | From blank page to polished draft, Grammarly’s AI helps you write faster and stronger. Get real-time... |
| 42 | Selenium IDE | 55 | C | 36.6k | Selenium IDE is an integrated development environment for Selenium tests. It is implemented as a Fir... |
| 43 | EPUBReader | 55 | C | 129.0k | Read ePub files right in Firefox. No additional software needed! |
| 44 | Kaspersky Protection 2021 | 55 | C | 352.8k | Your protection on the Internet with extension from Kaspersky Lab |
| 45 | Firefox Relay | 55 | C | 248.0k | Firefox Relay lets you generate email aliases that forward to your real inbox. Use it to hide your r... |
| 46 | Cookie AutoDelete | 55 | C | 175.5k | Control your cookies! This WebExtension is inspired by Self Destructing Cookies. When a tab closes, ... |
| 47 | YouTube NonStop | 55 | C | 151.3k | Tired of getting that "Video paused. Continue watching?" confirmation dialog? This extension autocli... |
| 48 | iCloud Bookmarks | 55 | C | 136.0k | Keep your Firefox bookmarks on Windows up to date with your Safari bookmarks on iPhone, iPad, and Ma... |
| 49 | 'Improve YouTube!' 🎧 (For YouTube & Video) | 55 | C | 108.4k | Youtube Extension. Powerful but lightweight. Enrich your Youtube and content selection. Make YouTube... |
| 50 | Chrome Mask | 55 | C | 50.9k | Makes Firefox wear a mask to look like Chrome to websites that block Firefox otherwise. |
How We Rank Best Firefox Add-ons
These best firefox add-ons are ranked by Nerq Trust Score, which evaluates security, maintenance, community adoption, and transparency across multiple data points. Only entities with a trust score of 30 or above are included. Scores are updated continuously as new data becomes available.
FAQ
What are the best best firefox add-ons in 2026?
Based on Nerq Trust Scores, the top-ranked best firefox add-ons are listed above, scored on security, activity, documentation, and community metrics.
How are best firefox add-ons ranked?
Nerq ranks tools using Trust Score v2, which combines security analysis, maintenance activity, documentation quality, and community adoption signals.
Are these best firefox add-ons safe to use?
Each tool has an individual safety report. Click any tool name to see its detailed trust analysis.
What does a Nerq Trust Score of A mean?
An A grade (80-89) means the entity has strong signals across security, maintenance, documentation, and community adoption. A+ (90-100) is the highest possible rating.
How does Nerq evaluate best firefox add-ons?
Nerq analyzes best firefox add-ons across multiple dimensions including security vulnerabilities, license compliance, maintenance activity, documentation quality, and community adoption. Each dimension is scored independently and combined into an overall Trust Score (0-100).