AI Firefox Add-ons Directory: The Complete Ranked List
A transparent, data-driven directory of AI Firefox extensions - ranked by daily active users, rating, and review volume, not by who paid for placement. Rebuilt weekly from Mozilla Add-ons.
Curated & maintained by Alston Antony Read Alston's origin story.
Alston Antony
AI SEO Strategist · Senior Digital Marketing Manager · Founder of zPlatform
Alston Antony has 15+ years of hands-on SEO and software experience and has tested 500+ AI and SaaS tools with his own money. He curates this add-on leaderboard from live Mozilla Add-ons data, not opinion, so the ranking reflects real ratings and adoption rather than who paid to be listed.
He is also Senior Digital Marketing Manager at Brainstorm Force, where he helps lead AI products including ZipWP, and holds an MSc in Software Engineering plus BCS Full Professional Membership. Every add-on is scored on the same transparent basis and the list is rebuilt weekly.
- 500+tools tested
- 15+years in software
What Is an AI Firefox Extension, and How Do You Install One?
What it is
An AI Firefox extension adds AI capabilities - chat, writing help, summarization, translation - directly into your browser, usually as a sidebar, toolbar button, or right-click menu, instead of needing a separate tab or app. Every add-on here is distributed through Mozilla Add-ons (AMO).
How to install one
Open the add-on's Mozilla Add-ons link from the directory below, click "Add to Firefox," and confirm the permissions prompt. The extension's icon then appears in your toolbar, where you can pin or manage it. Look for the green Recommended badge for add-ons Mozilla has extra-reviewed.
A transparent, data-driven directory of AI Firefox extensions - ranked by daily active users, rating, and review volume, not by who paid for placement. Rebuilt weekly from Mozilla Add-ons. How we choose and rank →
The best AI Firefox extensions as of November 9, 2026, ranked by our composite Quality Score (adoption, rating, review trust):
- Grammarly: AI Writing and Grammar Checker App - Language & Translation, 4.1/5 from 3,226 reviews, quality score 94/100.
- DeepL: AI translator and writing assistant - Language & Translation, 4.2/5 from 1,043 reviews, quality score 83/100.
- 划词翻译 - Language & Translation, 4.3/5 from 336 reviews, quality score 69/100.
- Page Assist - A Web UI for Local AI Models - Other, 4.7/5 from 77 reviews, quality score 62/100.
- Simplify Copilot - Autofill job applications - Other, 4.1/5 from 153 reviews, quality score 59/100.
AI Firefox Extensions, By the Numbers
Highest-rated with a real review base: Remove Youtube AI Chapters (5.0/5). Most installed: Grammarly: AI Writing and Grammar Checker App (534.8k daily users). Also run Chrome? See our AI Chrome extensions leaderboard, scored the same way.
Every AI Firefox Extension, Ranked
All 105 AI Firefox extensions in this build, scored on a transparent composite of adoption, rating, and review volume. Filter by category, minimum rating, or Mozilla-Recommended status, sort by any column, and expand any row for the full breakdown and store link.
| # | Extension | Rating | Users | Trend | Quality | Store link |
|---|---|---|---|---|---|---|
| 1 | 534.8k | 94 | View → | |||
| Grammarly: AI Writing and Grammar Checker App has a 4.1/5 rating from 3,226 reviews and 534.8k daily users, by Grammarly. Our take: The default pick for most people. The free tier alone catches the errors that matter; the paid tier is really about tone and rewriting, not correctness. Works the same on Firefox as Chrome. From blank page to polished draft, Grammarly’s AI helps you write faster and stronger. Get real-time grammar fixes, tone transformations, and instant content generation right where you write in Firefox. | ||||||
| 2 | 161.7k | 83 | View → | |||
| DeepL: AI translator and writing assistant has a 4.2/5 rating from 1,043 reviews and 161.7k daily users, by DeepL. Our take: The translation quality is the reason to install this over a generic translator. Free tier is generous for occasional use; the writing-assistant side is newer and less essential than the core translate. Stay informed, work smarter, and communicate globally without leaving your browser. | ||||||
| 3 | 27.7k | 69 | View → | |||
| 划词翻译 has a 4.3/5 rating from 336 reviews and 27.7k daily users, by 划词翻译. 一站式划词 / 截图 / 网页全文 / 音视频 AI 翻译扩展，支持谷歌、DeepL、ChatGPT、百度等 9 个国内外主流翻译服务，均可用于全文翻译。能在 PDF 里使用。支持辅助键、快捷键、悬浮取词。 | ||||||
| 4 | 10.4k | 62 | View → | |||
| Page Assist - A Web UI for Local AI Models has a 4.7/5 rating from 77 reviews and 10.4k daily users, by Muhammed Nazeem. Our take: The standout for privacy-minded users: it gives you a chat UI for local models (Ollama and friends) so your prompts never leave your machine. Needs a local model running, so it is not a plug-and-play pick for everyone. Use your locally running AI models to assist you in your web browsing. | ||||||
| 5 | 9.3k | 59 | View → | |||
| Simplify Copilot - Autofill job applications has a 4.1/5 rating from 153 reviews and 9.3k daily users, by Simplify. The better way to job search. Quick apply and autofill job applications in one click. Track jobs, companies, contacts, resumes & more! | ||||||
| 6 | 8k | 52 | View → | |||
| Copilot Launcher Button has a 4.0/5 rating from 18 reviews and 8k daily users, by SYS64738. A very simple launcher that adds a Copilot button to the toolbar. When you click the button, the Microsoft Copilot website will open in a new tab. | ||||||
| 7 | 8k | 51 | View → | |||
| ChatGPT in Sidebar has a 3.9/5 rating from 16 reviews and 8k daily users, by semanticdata. Displays ChatGPT in the sidebar, provides customizable keyboard shortcut and toggle button. | ||||||
| 8 | 7.3k | 53 | View → | |||
| WebChatGPT: ChatGPT with internet access has a 3.7/5 rating from 107 reviews and 7.3k daily users, by Extensions Hub. Our take: Adds live web results and a prompt/preset library to ChatGPT. Genuinely useful, but it is a companion to ChatGPT, not a standalone assistant. Check permissions before installing any ChatGPT add-on. Augment your ChatGPT prompts with relevant web search results through web browsing. | ||||||
| 9 | 6.6k | 59 | View → | |||
| Add GPT in Sidebar has a 4.9/5 rating from 45 reviews and 6.6k daily users, by jonas_w. ChatGPT in the sidebar: Ask any question about the page you visit. | ||||||
| 10 | 5.7k | 53 | View → | |||
| AI Subtitles & Immersive Translate - Trancy has a 4.0/5 rating from 65 reviews and 5.7k daily users, by Trancy. Our take: Best-in-class for bilingual subtitles and inline video/page translation while you learn a language. Freemium, and the free limits are enough to try before you commit. Trancy provides bilingual subtitle for platforms like YouTube, Disney+... as well as AI translator for websites. | ||||||
| 11 | 5.2k | 54 | View → | |||
| Access Anthropic's Claude from Sidebar! has a 4.6/5 rating from 28 reviews and 5.2k daily users, by Jadon Mason. Chat with Claude AI directly in your browser sidebar. Summarize articles, explain code, translate pages, and get instant answers without switching tabs. | ||||||
| 12 | 5k | 53 | View → | |||
| AI Exporter - Gemini to PDF & Sync to Notion has a 4.2/5 rating from 52 reviews and 5k daily users, by Colin. Export conversations from 10+ AI platforms, including ChatGPT, Claude, Gemini, Google AI Studio, Perplexity, Grok, DeepSeek, and more. Save as PDF, image, TXT, Markdown, or export directly to Notion - with one-click export and conversation selection. | ||||||
| 13 | 5k | 57 | View → | |||
| Claude Usage Tracker has a 4.8/5 rating from 51 reviews and 5k daily users, by lugia19. Helps you track your claude.ai usage caps based on tokens sent, and syncs across devices using firebase. | ||||||
| 14 | 5k | 40 | View → | |||
| YouTube Summary with ChatGPT & Claude has a 2.5/5 rating from 31 reviews and 5k daily users, by Glasp. Summarize YouTube videos, web articles, and PDFs to save time, powered by ChatGPT, Claude, Mistral AI, and Gemini. | ||||||
| 15 | 4.9k | 53 | View → | |||
| Claude in Sidebar has a 4.7/5 rating from 13 reviews and 4.9k daily users, by Picos. Open Claude in the sidebar to summarize, translate, and ask about any page without switching tabs. Chat with Anthropic Claude while you browse. | ||||||
| 16 | 4.8k | 55 | View → | |||
| Omnibox Search with Anthropic has a 5.0/5 rating from 16 reviews and 4.8k daily users, by Chloe for Claude. Set Claude as default search, use omnibox keyword clau, ask from selected text, and optionally send claude.ai new-chat links to Google instead. | ||||||
| 17 | 4.7k | 58 | View → | |||
| chessvision.ai Chess Position Scanner has a 4.8/5 rating from 80 reviews and 4.7k daily users, by Pawel Kacprzak. Analyze chess positions from any website, book, and video in Firefox | ||||||
| 18 | 4.5k | 45 | View → | |||
| Gemini for Google has a 3.5/5 rating from 17 reviews and 4.5k daily users, by tudoujun. A browser extension to display Gemini (Google's AI model, currently free) response alongside Google and other search engines results. Supported Search Engines: Google, Baidu, Bing, DuckDuckGo, Brave, Yahoo, Naver, Yand | ||||||
| 19 | 4.5k | 51 | View → | |||
| YouTube to NotebookLM - YouTube to Gemini Notebook has a 4.4/5 rating from 18 reviews and 4.5k daily users, by Dima. Send YouTube to Gemini Notebook. Save videos, sync YouTube channel to NotebookLM, and manage any NotebookLM video easily | ||||||
| 20 | 4.3k | 56 | View → | |||
| AI Toolbox has a 4.7/5 rating from 54 reviews and 4.3k daily users, by Arash Yoosefdoost. Ultimate AI assistant! Access all AIs anywhere and boost your productivity: ChatGPT, Gemini, DeepSeek, Grok, Copilot, Claude, Llama, Qwen, Mistral AI, Perplexity, Poe, Narrow AIs and much MORE! 💖 No user information is collected by the developer | ||||||
| 21 | 4.0k | 54 | View → | |||
| Freespoke - AI Search Tool has a 4.7/5 rating from 45 reviews and 4.0k daily users, by Freespoke.com. The AI Search Tool for Finding Truth. Make Freespoke your default search experience. | ||||||
| 22 | 4.0k | 57 | View → | |||
| Definer: Word Translator, Ask AI, Popup Dictionary has a 4.6/5 rating from 149 reviews and 4.0k daily users, by Lumetrium. Select text to translate, define, or ask AI. A word translator and dictionary extension for webpages, PDFs, and EPUBs. | ||||||
| 23 | 4.0k | 48 | View → | |||
| ChatGPT Reader & Transcriber: Free AI Text↔Speech has a 3.8/5 rating from 43 reviews and 4.0k daily users, by Democratic Developer. Free AI text to speech (tts) and speech to text (stt) with ChatGPT. Listen to natural voices or transcribe audio instantly. Free alternative to sites like ElevenLabs, Speechify, Rev, Otter.ai or other text to speech/transcription services | ||||||
| 24 | 3.5k | 52 | View → | |||
| Gemini Voyager has a 4.8/5 rating from 18 reviews and 3.5k daily users, by Nagi-ovo. Supercharge your Gemini experience with timeline navigation, folder organization, prompt library, and chat export. | ||||||
| 25 | 3.2k | 34 | View → | |||
| ClaudeCodeBrowser has a 3.0/5 rating from 2 reviews and 3.2k daily users, by nanogenomic. ClaudeCodeBrowser enables AI-powered browser automation through the Claude Code CLI. It allows Claude to interact with web pages by taking screenshots, clicking elements, typing text, scrolling, and navigating - all controlled via a local MCP server. | ||||||
| 26 | 3.2k | 51 | View → | |||
| Speed Booster Toolkit for ChatGPT has a 4.4/5 rating from 53 reviews and 3.2k daily users, by BGSN. Folders, bulk delete, faster long chats, full-chat search, bookmarks and export to PDF or Markdown for ChatGPT. Free. | ||||||
| 27 | 3k | 53 | View → | |||
| Ge- mini has a 4.9/5 rating from 28 reviews and 3k daily users, by AI Allstar. Ask Google Gemini AI directly from the address bar. Ask Gemini to summarize selected text for you. | ||||||
| 28 | 3.0k | 44 | View → | |||
| ChatGPT Sidebar for Fire Fox has a 3.8/5 rating from 21 reviews and 3.0k daily users, by HamzaDev. Use ChatGPT in sidebar. You won't need to waste time switching between ChatGPT and other tabs. | ||||||
| 29 | 2.9k | 48 | View → | |||
| Voila - AI Assistant, Copilot and AI Writer has a 4.2/5 rating from 30 reviews and 2.9k daily users, by Browser extensions. Seamless personal AI assistant powered by GPT-4o to help you create, write, summarize, brainstorm, and research Get things done with a simple keyboard shortcut - Improve your writing, get answers to all your questions and draft high-quality content. | ||||||
| 30 | 2.8k | 46 | View → | |||
| Torii Image Translator - AI Manga Translator has a 3.6/5 rating from 85 reviews and 2.8k daily users, by stringie. Translate any image on any website in any language! Perfect for Manga, Manhwa, Manhua, Comics, Memes or any image at all! | ||||||
| 31 | 2.8k | 51 | View → | |||
| Complexity | Perplexity AI Supercharged has a 4.5/5 rating from 53 reviews and 2.8k daily users, by Duong Pham Ngoc. Power-user toolkit: Quick model switching, custom themes, enhanced code blocks, export tools, and 20+ productivity features for Perplexity AI. | ||||||
| 32 | 2.6k | 41 | View → | |||
| Copilot Sidebar has a 3.7/5 rating from 12 reviews and 2.6k daily users, by Yashjit. Embeds Microsoft Copilot in Firefox sidebar | ||||||
| 33 | 2.4k | 41 | View → | |||
| Claude Exporter has a 3.6/5 rating from 14 reviews and 2.4k daily users, by agoramachina. Export conversations and artifacts from Claude.ai | ||||||
| 34 | 2.3k | 51 | View → | |||
| ChatGPTBox has a 4.4/5 rating from 100 reviews and 2.3k daily users, by josStorer. This extension integrates ChatGPT into the browser deeply, and provides chat windows, search engines and commonly used websites integration, and selection tools. | ||||||
| 35 | 2.3k | 48 | View → | |||
| Janitor AI Scraper has a 4.4/5 rating from 25 reviews and 2.3k daily users, by Weary Galaxy. This extension can scrape characters from Janitor AI. You can download them as PNG in Character V2 Specs to import into SillyTavern or other compatible apps. | ||||||
| 36 | 2.2k | 47 | View → | |||
| Google Reader: Free Natural AI Text to Speech, TTS has a 4.5/5 rating from 17 reviews and 2.2k daily users, by Democratic Developer. Natural Gemini AI text to speech (TTS) for the web, PDFs, articles, and docs. Download or read aloud using high-quality AI voices - a free alternative to ElevenLabs and Speechify with high-quality TTS! | ||||||
| 37 | 2.2k | 42 | View → | |||
| ChatGPT search has a 3.8/5 rating from 20 reviews and 2.2k daily users, by ars3nb. Change default search engine to ChatGPT search. dev for firefox by ars3nb | ||||||
| 38 | 2.2k | 35 | View → | |||
| Chat GPT for Google has a 2.8/5 rating from 15 reviews and 2.2k daily users, by Chat GPT for Google. See the ChatGPT responses right next to your search engine results. https://extensionchatgpt.com/ See our youtube guide: https://www.youtube.com/watch?v=p9it2NCB3_c | ||||||
| 39 | 2k | 45 | View → | |||
| LightSession Pro for ChatGPT has a 4.2/5 rating from 23 reviews and 2k daily users, by Emil K. Fix slow, laggy ChatGPT tabs in Firefox. Local-only extension that speeds up long conversations by trimming old messages from the page (no data leaves your browser). | ||||||
| 40 | 2.0k | 46 | View → | |||
| AI Chat Exporter - Free, Private, OpenSource has a 4.5/5 rating from 16 reviews and 2.0k daily users, by Covai Labs. Privacy-first, 100% local tool to export or transfer AI chats from ChatGPT, Claude, Gemini, DeepSeek, Perplexity and 15+ models to Markdown, JSON, HTML, PDF, Word, PNG, or directly into Obsidian, Logseq, Bear or other PKM tools. | ||||||
| 41 | 2.0k | 33 | View → | |||
| Export ChatGPT has a 2.3/5 rating from 38 reviews and 2.0k daily users, by Mohalobaidi. Export your ChatGPT threads in the Markdown format with the'Export ChatGPT' extension. this tool is a must-have for ChatGPT users. | ||||||
| 42 | 2.0k | 49 | View → | |||
| AI Anywhere for ChatGPT has a 4.6/5 rating from 38 reviews and 2.0k daily users, by Juraj Mäsiar. 📈 Press "Alt + i" or use context menu to quickly access 💬 ChatGPT, GitHub Copilot, Claude, T3 Chat, Lumo, Gemini, DeepSeek, Mistral, Perplexity and Grok. | ||||||
| 43 | 1.8k | 49 | View → | |||
| Read Frog - AI Translation & Flashcards has a 4.9/5 rating from 22 reviews and 1.8k daily users, by MengXi. Read any website, YouTube or Netflix video, or X post in two languages with AI translation. Save the words you don't know and review them as flashcards with spaced repetition. Free to use and open source. | ||||||
| 44 | 1.8k | 45 | View → | |||
| ChatGPT Bulk Delete has a 4.4/5 rating from 17 reviews and 1.8k daily users, by User_425. An extension to bulk delete ChatGPT conversations | ||||||
| 45 | 1.7k | 49 | View → | |||
| Summarize and Translate with Gemini has a 4.6/5 rating from 47 reviews and 1.7k daily users, by Sadao Hiratsuka. Summarize and translate web pages using Gemini or OpenAI-compatible APIs. | ||||||
| 46 | 1.7k | 46 | View → | |||
| Browser Control MCP has a 5.0/5 rating from 6 reviews and 1.7k daily users, by EyalZ. Provides AI assistants with safe access to tab management, browsing history and webpage content via a local MCP (Model Context Protocol) connection. | ||||||
| 47 | 1.6k | 43 | View → | |||
| Superpower ChatGPT has a 3.4/5 rating from 136 reviews and 1.6k daily users, by Saeed Ezzati. Our take: A power-user layer over ChatGPT: folders, search, bulk export, prompt history. Only worth it if you live in ChatGPT daily; casual users will not miss it. Add Folders, Search, Export, Prompts Manager, Prompt Optimizer, Minimap, Gallery, Notes, Reference Chats, Model Switcher, Pinned Messages, Public Prompt Library, Favorite Prompts, Timestamps, and many more features to ChatGPT | ||||||
| 48 | 1.6k | 36 | View → | |||
| Claude Usage Meter - Limit Tracker & Alerts has a 3.5/5 rating from 8 reviews and 1.6k daily users, by Pilote Code. See your Claude 5-hour and weekly limits live, when your pace will block you, what each reply costs, and when limits reset. | ||||||
| 49 | 1.6k | 47 | View → | |||
| СВОБОДЫЧ - Твой ВПН / VPN навсегда has a 4.7/5 rating from 26 reviews and 1.6k daily users, by DevFusion. Бесплатный и быстрый VPN / Proxy для YouTube, ChatGPT, Claude, Gemini, Instagram, Facebook, X, Discord, Threads, RuTracker, Rutor, Roblox, Telegram, WhatsApp, Spotify, Snapchat, Ficbook, Proton, Ютуб, Инстаграм, Фейсбук, Дискорд | ||||||
| 50 | 1.5k | 45 | View → | |||
| Ai Chat everywhere has a 4.1/5 rating from 62 reviews and 1.5k daily users, by khashayar. Faster access to the best and free Ai Chats everywhere on all websites. support OpenAI ChatGPT, Google Gemini, Claude, Grok, NotebookLM and Ai agents and ... . | ||||||
| 51 | 1.5k | 15 | View → | |||
| Muse AI Companion: Personal AI Agent has a 1.0/5 rating from 2 reviews and 1.5k daily users, by Egor Besarab. AI Browser Agent & Voice Assistant - summarize, explain. YouTube Summarizer, AI Email Assistant. All-in-one AI for the web. | ||||||
| 52 | 1.5k | 38 | View → | |||
| Youtube ChatGPT summarization has a 3.1/5 rating from 84 reviews and 1.5k daily users, by ai fan. Generates summaries for youtube videos using ChatGPT | ||||||
| 53 | 1.4k | 41 | View → | |||
| ChatGPT Ctrl+Enter Sender has a 4.1/5 rating from 15 reviews and 1.4k daily users, by masachika.kmd. Use 'Ctrl+Enter' for sending messages in ChatGPT. Prevents accidental sends and allows line breaks with Enter. | ||||||
| 54 | 1.4k | 41 | View → | |||
| NotebookLM Tools for Gemini Notebook™ has a 4.5/5 rating from 4 reviews and 1.4k daily users, by trungpv. Power tools for NotebookLM (Gemini Notebook): bulk import, folders, custom prompts, duplicate cleanup, studio, tags & dark mode. | ||||||
| 55 | 1.4k | 41 | View → | |||
| Bing AI for Firefox has a 3.8/5 rating from 41 reviews and 1.4k daily users, by Patrik Martinko. This add-on removes the limits of Microsoft Copilot / Bing AI (ChatGPT v4) for Mozilla Firefox by setting appropriate features for the browser. | ||||||
| 56 | 1.4k | 36 | View → | |||
| Wordtune: AI Writing, Paraphrasing & Grammar Tool has a 3.4/5 rating from 14 reviews and 1.4k daily users, by AI21. With Wordtune, your AI writing companion, you can easily paraphrase, rewrite, correct grammar and more - all for free. In just a few clicks, you can turn your scattered thoughts into exactly what you want to say and streamline your writing process. | ||||||
| 57 | 1.4k | 43 | View → | |||
| AI answer in Google has a 4.0/5 rating from 54 reviews and 1.4k daily users, by OptiSearch. Puts AI answer next to Google results | ||||||
| 58 | 1.3k | 30 | View → | |||
| Pangram AI Detection has a 2.8/5 rating from 8 reviews and 1.3k daily users, by Pangram Labs. Pangram Labs detects AI-written text and AI-generated images. Right-click and select 'Check text for AI' or 'Check image for AI.' | ||||||
| 59 | 1.3k | 44 | View → | |||
| Claude Counter has a 4.9/5 rating from 7 reviews and 1.3k daily users, by pauljones0. Real-time token counter, cache timer, and full-precision usage bars for claude.ai - right in the composer. Know your limits before you hit them. | ||||||
| 60 | 1.2k | 43 | View → | |||
| AI Detector for text and images - Winston AI has a 4.2/5 rating from 39 reviews and 1.2k daily users, by Winston AI. Winston AI is the most trusted AI detector to help identify AI generated content and images. | ||||||
| 61 | 1.2k | 41 | View → | |||
| Chatwait: Get paid while AI thinks has a 4.1/5 rating from 26 reviews and 1.2k daily users, by Chatwait. Earn while ChatGPT, Claude, and Gemini thinks. We cannot read your chats. | ||||||
| 62 | 1.2k | 37 | View → | |||
| Claude Chat Exporter has a 3.8/5 rating from 13 reviews and 1.2k daily users, by sylvester1979. Export your Claude conversations to Markdown, JSON, or HTML - complete, with artifacts, thinking blocks, inline citations and full source URLs. Clean output, ready for Obsidian or Claude Projects. | ||||||
| 63 | 1.2k | 45 | View → | |||
| Save ChatGPT as PDF has a 4.6/5 rating from 31 reviews and 1.2k daily users, by AI Power. Save your ChatGPT conversation into a PDF file. | ||||||
| 64 | 1.1k | 43 | View → | |||
| Duck.ai Chat on Sidebar has a 4.9/5 rating from 8 reviews and 1.1k daily users, by Koala Yeung. (Unofficial) Fast and anonymous, DuckDuckGo's privacy-first AI Chats now available on your sidebar for free. Supports OpenAI ChatGPT, Claude, Llama and Mixtral. Respects your privacy. Free of charge. No need to register or login. | ||||||
| 65 | 1.1k | 47 | View → | |||
| Remove Youtube AI Chapters has a 5.0/5 rating from 23 reviews and 1.1k daily users, by moocj. Removes YouTube's AI-generated chapters from videos. Creator-made chapters are still shown. | ||||||
| 66 | 1.1k | 44 | View → | |||
| RTL All Fixer (Right To Left Fixer) has a 5.0/5 rating from 8 reviews and 1.1k daily users, by Dr.FATAL. Fixes right-to-left text direction issues and manages RTL sites To fix the problem of displaying Farsi and Arabic texts while chatting or working with artificial intelligence such as Chatgpt Poe DeepSeek Grok ... برای رفع مشکل نمایش متن فارسی عربی | ||||||
| 67 | 1.1k | 33 | View → | |||
| Youtube Transcript AI Summary has a 3.0/5 rating from 23 reviews and 1.1k daily users, by RSpark. Get AI generated summary for Youtube video transcript. | ||||||
| 68 | 1k | 33 | View → | |||
| AI Chat WEB3.0 - ChatGPT 4.1 has a 3.3/5 rating from 12 reviews and 1k daily users, by AI Chat WEB3.0. WEB3.0 AI Chat with GPT-4.1 Turbo. Private and anonymous chat, 40+ specialized agents, unlimited messages. SearchGPT integration. Complete privacy protection. Based on ChatGPT GPT-4.1 API | ||||||
| 69 | 981 | 26 | View → | |||
| Fydub: YouTube Translator with AI Voice Dubbing has a 3.0/5 rating from 2 reviews and 981 daily users, by Daniel Perlera. Translate and listen to YouTube videos in your language in real time with AI dubbing. Free plan included. | ||||||
| 70 | 960 | 42 | View → | |||
| Sider: Chat with GPT Claude Gemini and more has a 4.7/5 rating from 12 reviews and 960 daily users, by Sider. Chat with GPT, Claude, Gemini, Grok and more in one AI sidebar. Search, read, summarize, write and translate on any page without switching tabs. | ||||||
| 71 | 943 | 30 | View → | |||
| Mapify - AI Mind Map and Youtube Summary has a 3.5/5 rating from 2 reviews and 943 daily users, by SUPERMIND PTE. LTD.. Summarize anything to mindmap with AI | ||||||
| 72 | 923 | 37 | View → | |||
| ChatGPT to PDF, Word, Markdown & Google Docs has a 4.1/5 rating from 8 reviews and 923 daily users, by gptsexporter. Export ChatGPT chats to PDF, Word, Markdown or Google Docs in one click. Keeps code, tables, math and images. Free to start. | ||||||
| 73 | 915 | 38 | View → | |||
| Gemini next to Google results has a 3.8/5 rating from 37 reviews and 915 daily users, by OptiSearch. 🗨️ Gemini answer alongside Google results. | ||||||
| 74 | 914 | 31 | View → | |||
| AI Prompt Genius has a 3.0/5 rating from 21 reviews and 914 daily users, by bennyfi4. Discover, share, import, and use the best prompts for ChatGPT & save your chat history locally (formerly ChatGPT History) | ||||||
| 75 | 887 | 39 | View → | |||
| ChatGPT Export has a 4.5/5 rating from 8 reviews and 887 daily users, by Diop. Save any ChatGPT or Gemini conversation as PDF, Word, Markdown, HTML, text, CSV or JSON. | ||||||
| 76 | 868 | 42 | View → | |||
| Gemini Bulk Delete has a 4.4/5 rating from 38 reviews and 868 daily users, by Jennus. Delete your Gemini chats in bulk with ease. | ||||||
| 77 | 838 | 43 | View → | |||
| AI Code Finder & Alerts for Papers: CatalyzeX has a 4.8/5 rating from 20 reviews and 838 daily users, by CatalyzeX. 🧑💻 Get implementation code for research papers directly on Google Search, ArXiv, Scholar, Twitter, Github, PubMed, IEEE, and more | ||||||
| 78 | 826 | 34 | View → | |||
| IdeaPi: Chat Exporter for ChatGPT, Gemini & Claude has a 3.9/5 rating from 7 reviews and 826 daily users, by IdeaPi.ai. Export ChatGPT, Gemini, Claude, and DeepSeek conversations to Markdown, or sync them to IdeaPi for workflow processing. | ||||||
| 79 | 803 | 39 | View → | |||
| PLaMo翻訳 - AIブラウザ翻訳 has a 4.5/5 rating from 12 reviews and 803 daily users, by Preferred Networks (PLaMo Translate). 国産AI「PLaMo翻訳」で、Webページをレイアウトそのまま高品質に翻訳。ワンクリックで簡単に実行。無料で始められます。 | ||||||
| 80 | 798 | 34 | View → | |||
| Comic Translator - Manga translator using AI has a 4.0/5 rating from 6 reviews and 798 daily users, by liquiddev99. Translate Manga, Manhwa, Manhua, Comics on any website into any language! | ||||||
| 81 | 792 | 42 | View → | |||
| Gemini in Address Bar has a 5.0/5 rating from 10 reviews and 792 daily users, by Gemini. Ask Gemini from the address bar, keyword gemi, or selected text. Optional toggle sends Gemini search links to Google instead. | ||||||
| 82 | 784 | 43 | View → | |||
| Clarify AI: YouTube Summaries has a 4.3/5 rating from 92 reviews and 784 daily users, by Clarify AI. Summarize YouTube videos with AI, timestamps, transcripts, bookmarks, and chat. | ||||||
| 83 | 779 | 42 | View → | |||
| ChatGPT Timestamp has a 5.0/5 rating from 9 reviews and 779 daily users, by Yiwei Dai. Displays timestamps for ChatGPT messages | ||||||
| 84 | 765 | 28 | View → | |||
| AI Chat Exporter has a 3.0/5 rating from 10 reviews and 765 daily users, by Hamza. Export your AI chat conversations from Claude.ai, Gemini and ChatGPT to professionally formatted PDF documents with one click. Preserves code blocks, lists, and tables. | ||||||
| 85 | 753 | 24 | View → | |||
| 会译:对照式翻译&沉浸式AI翻译 has a 2.8/5 rating from 4 reviews and 753 daily users, by Nightingales Tech. 为用户提供更好用的 AI 翻译和更流畅的阅读体验 | ||||||
| 86 | 721 | 36 | View → | |||
| Tailwind - AI marketing content assistant has a 4.0/5 rating from 17 reviews and 721 daily users, by Tailwind. Tailwind: AI makes generating copy with AI and scheduling content to Pinterest and Instagram so easy it’s practically a superpower. | ||||||
| 87 | 717 | 41 | View → | |||
| SelectTranslate - Translate Web, PDF & Videos has a 4.8/5 rating from 13 reviews and 717 daily users, by SelectTranslate. Free AI translator for bilingual Web, PDF, papers, video, meetings, images & ebooks. 20+ top models (GPT, DeepSeek). | ||||||
| 88 | 717 | 35 | View → | |||
| Claude QoL - Branching, Export, Fork and more has a 4.1/5 rating from 7 reviews and 717 daily users, by lugia19. Collection of enhancements for Claude.ai, such as Search, fork, TTS, STT | ||||||
| 89 | 714 | 38 | View → | |||
| Claude Helper has a 5.0/5 rating from 2 reviews and 714 daily users, by Mert. Allows folder uploads to Claude projects and removal of all uploaded files | ||||||
| 90 | 682 | 39 | View → | |||
| TransorAI - AI Translator | Web, PDF, Images has a 4.8/5 rating from 6 reviews and 682 daily users, by Transor AI. Free AI translator for web pages, YouTube/Netflix subtitles, PDFs & images. Real-time bilingual translation tool. | ||||||
| 91 | 677 | 30 | View → | |||
| PerfectPost for LinkedIn has a 3.4/5 rating from 7 reviews and 677 daily users, by Jérôme Heissler. Built around the real LinkedIn composer, not instead of it: drafts and AI assistant next to the editor, Unicode formatting, "see more" preview, Canva import, scheduling, custom feeds of the people who matter, daily goals and stats. | ||||||
| 92 | 662 | 37 | View → | |||
| Save my Chatbot - AI Conversation Exporter has a 3.9/5 rating from 29 reviews and 662 daily users, by Hugo COLLIN. 🚀 Download your ChatGPT, Claude, Perplexity and Phind conversations into markdown files! | ||||||
| 93 | 622 | 39 | View → | |||
| LLMFeeder - Web to Markdown for AI has a 4.8/5 rating from 9 reviews and 622 daily users, by jatinkrmalik.com. Convert any webpage to clean Markdown for ChatGPT, Claude & Gemini. Multi-tab copy, token counter. 100% private. | ||||||
| 94 | 607 | 31 | View → | |||
| YourAIScroll - AI Chat History Exporter has a 3.5/5 rating from 15 reviews and 607 daily users, by Kareverie. Export your AI chat history from DeepSeek, Claude, Grok and more. Save conversations including ChatGPT Canvas, Claude Artifacts. | ||||||
| 95 | 597 | 35 | View → | |||
| Grammar Checker and Writing Assistant by Sapling has a 3.9/5 rating from 29 reviews and 597 daily users, by Sapling.ai. AI-powered grammar checking, paraphrase, and autocomplete for email, docs, chat, and more. | ||||||
| 96 | 596 | 31 | View → | |||
| SayAI - Audio for ChatGPT has a 3.5/5 rating from 16 reviews and 596 daily users, by Nodetics. Adds voice recording and spoken answers to ChatGPT UI. | ||||||
| 97 | 580 | 25 | View → | |||
| Claude Sidebar has a 3.0/5 rating from 5 reviews and 580 daily users, by Romso. Quick Access to Claude with sidebar | ||||||
| 98 | 570 | 35 | View → | |||
| ChatGPT-rtl has a 4.7/5 rating from 3 reviews and 570 daily users, by Hadi pd. You can solve the issue of displaying Arabic and Persian texts from right to left on websites such as Chat-gpt, BAI, and poe using this simple and lightweight extension. حل مشکل RTL در ChatGPT | ||||||
| 99 | 567 | 36 | View → | |||
| editGPT has a 4.2/5 rating from 17 reviews and 567 daily users, by jiconaar. Easily proofread, edit, and track changes to your content in ChatGPT. | ||||||
| 100 | 552 | 35 | View → | |||
| GitMind AI - AI Summary and Mind Maps has a 5.0/5 rating from 1 reviews and 552 daily users, by GitMind. GitMind AI - Summarize YouTube videos, articles, webpages & docs into clear mind maps. | ||||||
| 101 | 543 | 39 | View → | |||
| Hamdast - RTL and Persian Font for AI Tools has a 4.9/5 rating from 8 reviews and 543 daily users, by Hamdast. افزونه همدست، راستچین و فارسیساز فونت برای ChatGPT، Gemini، Copilot، Claude و دیگر ابزارهای هوش مصنوعی. فارسیسازی فونتها بهسادگی. | ||||||
| 102 | 530 | 22 | View → | |||
| ChatGPT for Gmail has a 3.0/5 rating from 2 reviews and 530 daily users, by Dolevf. Display ChatGPT response as a suggestion to complete emails | ||||||
| 103 | 520 | 32 | View → | |||
| Page to Markdown has a 4.3/5 rating from 3 reviews and 520 daily users, by bermudi. Ever needed to give some context to your LLM? Just download the current page as markdown on your downloads folder with one click! | ||||||
| 104 | 516 | 38 | View → | |||
| GemiNope has a 4.9/5 rating from 8 reviews and 516 daily users, by DCI.works. Attempts to hide Gemini integrations from Google Workspace (Mail, Docs, Sheets, Slides, Drive, Chat). Just a CSS change. | ||||||
| 105 | 513 | 25 | View → | |||
| Multi AI Sidebar has a 2.6/5 rating from 17 reviews and 513 daily users, by OinkAndStuff. Access to all AI apps like OpenAI ChatGPT, Bing AI, Microsoft Copilot, Google Gemini and more in a single Sidebar. Get the best AI. | ||||||
No extensions match those filters.
Best AI Firefox Extensions by Use Case
Best AI Writing & Grammar Assistants
The highest-adoption tools for grammar, paraphrasing, and tone - the most-used AI category on Firefox by a wide margin.
Best AI Chatbot Sidebars
Bring ChatGPT, Claude, Gemini, or Copilot into a sidebar so you can ask AI about the page you are on without switching tabs.
- ChatGPT in Sidebar 3.9/5
- Copilot Sidebar 3.7/5
- Voila - AI Assistant, Copilot and AI Writer 4.2/5
- ChatGPTBox 4.4/5
Best AI Translators
Inline, AI-powered translation for web pages, PDFs, subtitles, and manga - side-by-side with the original text.
Best AI Summarizers (YouTube, Web, PDF)
Feed these a video, article, or PDF and get the key points back in seconds instead of reading or watching the whole thing.
Best AI Chat Exporters & Savers
Save, back up, and share your ChatGPT, Claude, and Gemini conversations as PDF, Markdown, or a synced note.
Best ChatGPT Power-User Add-ons
Extensions that upgrade the AI chat interface itself - web access, prompt libraries, folders, and speed fixes for long chats.
Best AI Extensions for Developers
Local-model UIs, code discovery, and browser automation built for people who work in the console as much as the browser.
Browse by Category
Search Tools
24 extensions · 73k users
AI search assistants, answer engines, and tools that add AI to your search results.
Filter the directory to Search Tools ↓Developer Tools
17 extensions · 28.8k users
AI extensions built for developers - code assistants, local model UIs, and browser automation.
Filter the directory to Developer Tools ↓Language & Translation
15 extensions · 745.9k users
AI translators and language tools that work inline on any page, PDF, or video.
Filter the directory to Language & Translation ↓News & Blogging
15 extensions · 26.2k users
AI writing, summarizing, and reading assistants for articles, feeds, and long-form content.
Filter the directory to News & Blogging ↓Other
12 extensions · 31.9k users
AI assistants and utilities that do not fit a narrower Mozilla category.
Filter the directory to Other ↓Appearance
11 extensions · 24.7k users
AI extensions that change how chat interfaces and pages look or behave.
Filter the directory to Appearance ↓Download Management
5 extensions · 9.7k users
AI chat exporters and tools that save conversations to PDF, Markdown, or Notion.
Filter the directory to Download Management ↓Privacy & Security
3 extensions · 3.6k users
AI-related extensions focused on privacy, control, and safer browsing.
Filter the directory to Privacy & Security ↓Games & Entertainment
1 extensions · 4.7k users
AI-powered creative and entertainment tools.
Filter the directory to Games & Entertainment ↓Photos, Music & Video
1 extensions · 1.2k users
AI tools for images, audio, and video - captions, summaries, and media translation.
Filter the directory to Photos, Music & Video ↓Bookmarks
1 extensions · 765 users
AI tools for saving, organizing, and recalling what you read.
Filter the directory to Bookmarks ↓Are AI Firefox Extensions Free?
Nearly every extension in this directory installs at no cost from Mozilla Add-ons. Most follow a freemium model: core features are free, and heavier usage (higher limits, premium models) needs a paid plan the add-on itself sells. Use the rating filter in the directory to surface well-reviewed free picks fast.
Browse the directory ↑How We Rank These
- Every extension is pulled directly from the Mozilla Add-ons (AMO) public API - name, author, rating, review count, daily active users, and category. The dataset rebuilds automatically every week.
- The Quality Score is a transparent 0-100 composite: 45% adoption (daily active users, log-scaled), 35% rating quality, 20% review-volume trust signal. Identical weighting to our AI Chrome extensions leaderboard, so the two are directly comparable.
- No extension pays for placement or a higher rank. Ranking is entirely formula-driven from public AMO metrics.
- Inclusion is AI-first: an addon is listed only if it is a genuine AI tool (an AI term in its name, or a specific AI product like ChatGPT/Claude/Gemini in its description). Extensions that only block or hide AI, and tools that merely mention AI in passing, are excluded by hand.
- We do not compute a security score - Mozilla has no public per-addon vulnerability feed comparable to the one we use for WordPress plugins. The last-updated date shown comes straight from AMO.
The Quality Score formula
Quality Score = 45% x adoption score (log of daily active users, normalized 0-100 across the dataset) + 35% x rating score (rating out of 5, scaled to 100) + 20% x trust score (log of review count, normalized 0-100 across the dataset).
Usage trend sparklines are built from our own daily snapshots and fill in over the weeks after launch - Mozilla does not publish historical daily-user data, so early trends may appear flat.
Frequently Asked Questions
Are AI Firefox extensions safe to install?
Safety depends on the specific add-on's permissions and author, not on it being "AI." Mozilla reviews add-ons before listing them, but you should still check what an extension can access before installing (most AI assistants request permission to read and change data on the pages you visit, since that is how they work) and prefer add-ons with a large, established review base - like the ones ranked here - over unknown authors with few reviews. Look for the "Recommended" badge, which Mozilla gives to add-ons that pass extra review.
Are these AI Firefox extensions free?
Nearly all install at no cost from Mozilla Add-ons. Many use a freemium model where basic features are free and advanced usage (higher limits, premium models) needs a paid subscription - check each add-on's own listing for current pricing, since it changes independently of this directory.
How do I install an AI Firefox extension?
Open the add-on's Mozilla Add-ons link from the directory above, click "Add to Firefox," then confirm the permissions prompt. Once installed, the extension's icon appears in your toolbar - right-click it to pin or manage it. Most AI sidebar and assistant extensions add a button or a right-click menu you can use straight away.
How is the ranking calculated?
Each extension gets a 0-100 Quality Score from three public Mozilla Add-ons metrics: daily active users (45% weight), star rating (35% weight), and review count (20% weight). See the Methodology section for the exact formula - no extension can pay to improve its score or placement.
How often is this list updated?
The full dataset rebuilds automatically every week from the Mozilla Add-ons API, and we take a daily snapshot of user counts to track trends over time. The "last updated" date at the top of the page reflects the most recent rebuild.
Why are some popular Firefox add-ons not on this list?
This is an AI-only directory. Popular extensions that are not AI tools - ad blockers, password managers, screenshot tools, VPNs - are deliberately excluded, even when their store copy mentions AI in passing. Extensions whose whole purpose is to block or remove AI features are excluded too, since they answer a different question than "which AI tools should I add?"