Best AI Browser Extensions & Chrome Extensions in 2026
TL;DR: Sider for multi-model AI access. Grammarly for writing everywhere. Monica for all-around AI assistance. Perplexity for research. Wappalyzer for tech analysis. Immersive Translate for languages.
AI browser extensions bring AI assistance to every website you visit — no switching tabs, no copy-pasting. From summarizing articles to writing emails to translating pages, these extensions make AI part of your natural browsing workflow.
Top Picks at a Glance
1. Sider AI
All-in-one AI sidebar for Chrome. Access ChatGPT, Claude, and Gemini from any webpage. Summarize pages, explain text, translate, write emails, and chat with AI about any content you’re viewing.
| Best For | People who want multiple AI models in one sidebar |
| Pricing | Free tier — Pro from $10/mo |
| Key Feature | Access ChatGPT + Claude + Gemini in one browser sidebar |
2. Grammarly
AI writing assistant that works everywhere you type — Gmail, LinkedIn, Google Docs, Slack, and more. Grammar, tone, clarity, and brand voice suggestions in real-time.
| Best For | Professional communication across all websites |
| Pricing | Free tier — Premium from $12/mo |
| Key Feature | AI writing help on every website and text field |
3. Monica
AI assistant powered by GPT-4 and Claude. Chat, search, translate, summarize, and write from any webpage. Handles images, PDFs, and video content.
| Best For | All-around AI assistant accessible on any webpage |
| Pricing | Free tier — Pro from $9.90/mo |
| Key Feature | Multi-model AI assistant for text, images, and video |
4. Perplexity
AI search engine as a browser extension. Highlight text and ask questions, get sourced answers with citations. Replaces Google for research-heavy browsing.
| Best For | Research and fact-checking while browsing |
| Pricing | Free — Pro $20/mo |
| Key Feature | Sourced AI answers with citations from any webpage |
5. Wappalyzer
AI-powered technology profiler. Visit any website and instantly see what technologies it uses — CMS, analytics, frameworks, hosting, marketing tools. Essential for competitive research.
| Best For | Developers and marketers analyzing competitor tech stacks |
| Pricing | Free tier — Pro from $99/mo |
| Key Feature | Instant technology detection on any website |
6. Immersive Translate
Best AI translation extension. Side-by-side bilingual display of any webpage. Supports DeepL, Google, ChatGPT, and local models. 10M+ users.
| Best For | Reading foreign language websites with side-by-side translation |
| Pricing | Free — Pro from $6.99/mo |
| Key Feature | Bilingual side-by-side translation of entire webpages |
Our Verdict
Sider for multi-model AI access. Grammarly for writing everywhere. Monica for all-around AI assistance. Perplexity for research. Wappalyzer for tech analysis. Immersive Translate for languages.
FAQ
Are AI browser extensions safe?
Extensions from major companies (Grammarly, Perplexity) are well-audited. Always check permissions — avoid extensions that request access to all websites without justification. Install from official browser stores.
Do AI extensions slow down browsing?
Modern AI extensions are lightweight and only activate when needed. They typically add less than 50ms to page load times. Heavy extensions like some ad blockers have more impact than AI tools.
Can my employer see what AI extensions I use?
Managed devices (work computers) may have policies restricting extensions. Some organizations block AI extensions for data security. Check your company’s IT policy before installing AI tools on work devices.
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