Best AI Chrome Extensions You Should Install (2025)
Best AI Chrome Extensions in 2025
AI Chrome extensions bring AI capabilities directly into your browser. Here are the ones worth installing.
TL;DR: Grammarly for writing everywhere. Monica for AI sidebar in any tab. Perplexity for instant AI search. Merlin for ChatGPT on any website. Max 3-4 extensions to avoid browser slowdown.
Must-Have AI Extensions
Writing and Productivity
- Grammarly (Free) — Grammar, spelling, and style suggestions on every website. Works in Gmail, Docs, social media, and more.
- Compose AI (Free) — AI autocomplete for emails and messages. Predicts what you want to type.
- Wordtune (Free/$10/mo) — Rewrite sentences, change tone, and expand or shorten text on any page.
AI Assistants
- Monica ($10/mo) — ChatGPT/Claude sidebar on any webpage. Summarize, translate, explain, and chat about page content.
- Merlin (Free/$15/mo) — Access GPT-4, Claude, and Gemini on any website. Quick summaries and responses.
- Sider ($10/mo) — AI sidebar with reading, writing, and chat tools. Multi-model support.
Research and Search
- Perplexity (Free) — AI-powered search with source citations. Quick answers on any topic.
- ChatGPT (Free) — Official ChatGPT extension for quick access from any page.
- Superhuman ($30/mo) — AI-powered email with instant reply suggestions in Gmail
- Mailbutler ($15/mo) — AI email assistant for Gmail and Outlook
Developer
- GitHub Copilot ($10/mo) — AI code completion (VS Code extension, not Chrome)
- Wappalyzer (Free) — Identify technologies used on any website
Recommended Combo (Free)
| Extension | Purpose | Price |
|---|---|---|
| Grammarly | Writing quality | Free |
| Perplexity | AI search | Free |
| ChatGPT | AI assistant | Free |
Productivity: AI productivity tools. Free tools: Best free AI tools.
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