Best AI Browser Extensions in 2026

AI Extensions That Transform Your Browser

Browser extensions are the fastest way to add AI capabilities to your daily workflow. They work across every website you visit, requiring no app switching or copy-pasting. The best AI extensions operate quietly in the background, activating only when needed, and integrate seamlessly with your existing browsing habits.

We tested over 40 AI browser extensions and selected the ones that deliver genuine productivity improvements without slowing down your browser or compromising privacy.

Best AI Writing Extensions

Grammarly

Grammarly remains the most popular AI browser extension with over 30 million users. It works in every text field across the web, checking grammar, spelling, punctuation, and style in real-time. The AI features include tone detection, full-sentence rewrites, and generative text suggestions. It integrates with Gmail, Google Docs, LinkedIn, and virtually every website with text input. The free tier handles core grammar checks, while Premium ($12/month) adds advanced suggestions and AI writing features. See our Grammarly deep dive.

Available for: Chrome, Firefox, Edge, Safari

Wordtune

Wordtune specializes in rewriting sentences to be clearer, more engaging, or more formal. Highlight any text on a webpage and Wordtune offers multiple rewrite suggestions. It is particularly useful for email composition, social media posts, and professional writing. The extension also summarizes long articles and YouTube videos. Free tier includes 10 rewrites per day, Premium starts at $9.99/month.

Available for: Chrome, Edge

Best AI Research and Summarization Extensions

Perplexity Extension

The Perplexity browser extension adds a sidebar that lets you ask questions about any webpage you are viewing. It summarizes articles, explains complex topics, and finds related information without leaving the page. The extension can also be triggered from the address bar for quick searches. Free with a Perplexity account. Check our Perplexity guide.

Available for: Chrome, Edge, Firefox

ChatGPT Browser Extension (by OpenAI)

OpenAI’s official extension provides a ChatGPT sidebar accessible from any webpage. You can ask questions about page content, get summaries, translate text, and use GPT-4o for any task without leaving your current tab. The extension also integrates with Google Search, showing AI answers alongside search results. Free with usage limits, Plus features require $20/month subscription.

Available for: Chrome

Comparison of Top AI Extensions

Sider AI

Sider provides a multi-purpose AI sidebar that combines chat, translation, summarization, and writing assistance. It supports multiple AI models including GPT-4o, Claude, and Gemini, letting you switch between them. The group chat feature lets you query multiple models simultaneously to compare answers. Free tier includes 30 queries per day.

Available for: Chrome, Edge, Firefox

Best AI Productivity Extensions

Tactiq

Tactiq transcribes Google Meet, Zoom, and Microsoft Teams meetings in real-time directly in your browser. It generates meeting summaries, action items, and follow-up tasks automatically. No bot joins your meeting; it works silently through the browser extension. Free tier includes 5 transcriptions per month, Pro costs $12/month.

Compose AI

Compose AI autocompletes sentences as you type in any text field. It learns your writing style over time and suggests increasingly personalized completions. Particularly effective in email composition where it can draft entire replies based on context. The extension is free.

YouTube Summary (powered by various AI)

Several extensions offer AI-powered YouTube video summaries. They generate timestamped summaries, key takeaways, and even full transcripts. Useful for quickly deciding whether a video is worth watching or extracting information without watching the entire video.

Privacy Considerations

AI browser extensions can access the content of every webpage you visit, raising legitimate privacy concerns. Before installing any AI extension:

• Review permissions: Check what data the extension requests access to. Be cautious of extensions requesting access to “all websites.”
• Read the privacy policy: Understand how your browsing data is used and stored.
• Use reputable extensions: Stick to extensions from established companies with clear privacy practices.
• Consider selective activation: Some extensions let you activate them only on specific sites rather than globally.
• Avoid extensions in sensitive contexts: Disable AI extensions when accessing banking, healthcare, or other sensitive sites.

Tips for Managing AI Extensions

Running too many extensions slows your browser and creates conflicts. Pick 2-3 that cover your primary needs rather than installing every option. Use extension management to disable extensions you do not use daily. Group related extensions and activate them based on your current task rather than running all of them simultaneously.