Open Source • Free Forever
Ask Gemini

Understand Anything
Instantly

Highlight any text on the web and get instant, AI-powered explanations from Google's Gemini. No copy-pasting. No tab switching. Just answers.

Download for Chrome View Source

Note: Ask Gemini is an independent open-source project and is not affiliated with, endorsed by, or sponsored by Google LLC.

While reading an article about quantum physics, you encounter this passage:


"The phenomenon of quantum entanglement allows particles to maintain correlations regardless of the distance separating them, challenging our classical understanding of locality."


Simply highlight the term, click the floating Gemini button, and get an instant explanation — no context switching required.

Gemini Ask Gemini
Quantum entanglement is a phenomenon where two or more particles become interconnected, sharing quantum states instantaneously regardless of distance. When measured, the state of one particle instantly determines the state of its entangled partner — what Einstein called "spooky action at a distance."
Features

Everything you need, nothing you don't

Built for speed, designed for simplicity, engineered for privacy.

⚡

Lightning Fast

Get AI-powered explanations in under 2 seconds. Powered by Google's latest Gemini model for speed and accuracy.

🎯

Zero Friction

Highlight text, click the button, get answers. No copy-pasting, no tab switching, no interruption to your flow.

🎨

Beautiful Design

A minimal, dark-themed UI that blends seamlessly with any website. Smooth animations and clean typography.

⚙️

Fully Customizable

Set your own question templates. Ask for definitions, translations, summaries, code explanations, and more.

📝

Concise Answers

Responses are capped at 100 words. No fluff, no embellishments — just the information you need.

🪶

Lightweight

Under 50KB total. The extension only activates when you select text, keeping memory usage minimal.

How It Works

Three steps to instant knowledge

1

Highlight Any Text

Select any word, phrase, or passage on any webpage. A floating Gemini button appears instantly.

📝
2

Click the Button

One click sends your selection to Google's Gemini AI with your custom question template.

👆
3

Get Your Answer

A beautiful tooltip appears with a concise, helpful explanation. Continue reading seamlessly.

✨
New Users

Getting Started Guide

Set up Ask Gemini in under 2 minutes.

1

Get a Free API Key

Visit Google AI Studio and sign in with your Google account. Click "Create API Key" — it's completely free!

2

Install the Extension

Add Ask Gemini to Chrome from the Chrome Web Store. Click the extension icon in your toolbar to open settings.

3

Paste Your API Key

Copy your API key from Google AI Studio and paste it into the extension settings. Choose "Simple Storage" for easy access, or "Password Protected" for extra security.

4

Start Using It!

Highlight any text on any webpage. A small Gemini button will appear — click it to get an instant AI explanation. That's it!

💡 Pro Tips

  • Customize your questions: Change the question template in settings to ask for translations, summaries, or code explanations.
  • Switch models: If you hit rate limits, try a different Gemini model from the dropdown. Flash Lite is fastest!
  • Refresh models: Click the ↻ button next to the model selector to fetch the latest available models.
Security

Your privacy is protected

We take security seriously. Your data stays on your device.

🔐

Password Protection Option

Encrypt your API key with AES-256-GCM encryption. Unlock once per session — stays protected when browser closes.

💾

Local Storage Only

All settings stored locally via Chrome's secure storage API. Nothing is sent to our servers — because we don't have any.

🔒

Direct API Connection

Requests go directly from your browser to Google's API. No middleman, no proxy, no data interception.

👁️

Open Source

Every line of code is public on GitHub. Audit it yourself, fork it, or contribute improvements.

Transparency

Why we need all-sites access

We believe in full transparency about permissions.

Single Purpose Statement

Ask Gemini has one single purpose: to explain highlighted text on any webpage using Google's Gemini AI.

To fulfill this purpose, the extension needs to detect when you select text on any website. This requires the <all_urls> permission.

What We Access

  • Text selection only — Only the text you highlight is captured when you click our button
  • Nothing else — We don't read page content, track browsing, or access any other data

Minimal Permission Use

  • Content scripts only inject minimal UI elements (a button and tooltip)
  • No background data collection or persistent tracking
  • Extension only activates when you select text
Legal

Privacy Policy

Overview

Ask Gemini is committed to protecting your privacy. This policy explains what data we collect, how we use it, and your rights.

Data Collection

Ask Gemini stores the following data locally on your device:

  • API Key: Your Google Gemini API key, stored in Chrome's sync storage or encrypted
  • Preferences: Your custom question template settings

We do NOT collect: Personal information, browsing history, analytics, usage data, or any data on external servers.

Data Usage

When you highlight text and click Ask Gemini:

  • The selected text is sent directly to Google's Gemini API using your API key
  • The request goes from your browser to Google's servers
  • No data passes through any servers owned by us

Third-Party Services

This extension uses the Google Gemini API. Please review Google's Privacy Policy for information on how they handle data.

Data Security

  • Your API key is stored in Chrome's built-in secure storage system
  • Optional password encryption uses AES-256-GCM with PBKDF2 key derivation
  • All API requests are made over HTTPS

Your Rights

  • Delete your stored API key and settings at any time through the extension popup
  • Uninstall the extension to remove all locally stored data
  • Clear your API key from Chrome's storage via Chrome settings

Contact

For questions about this privacy policy or the extension, please open an issue on our GitHub repository.

Last updated: January 6, 2026

Ready to understand anything?

Join thousands of curious minds who use Ask Gemini to learn faster.

Download for Chrome