What it does
Nanobrowser is an extension for the Chrome and Edge web browsers. You type a task into a side panel in plain words, and an AI agent reads the pages, clicks links, fills in text and moves between tabs to get it done.
By default it asks you before it submits, sends, deletes or uploads anything, and it hands steps like paying or entering a password back to you. You can also allow, limit or block it site by site.
You choose the AI model: a cloud service using your own key, or a model running on your own computer. Its makers say everything runs in your browser and your keys only go to the provider you pick.
Who it's for
People who want to hand repetitive web chores to an AI while keeping control over what it is allowed to do.
Can I use it without coding?
Yes. It installs from the Chrome Web Store like any browser extension, then a welcome page helps you connect a model. New to this? Start here.
Can I run it?
- Cost
- Free, but needs an AI accountThe software is free, but it uses an online AI service (like OpenAI or Anthropic), which usually charges for use.
- Runs on
- Web browser
- Computer
- An ordinary computer is fine
- Privacy
- Your choice: run it on your device or use an online service
- API key
- Not needed
Try it
- Add Nanobrowser to Chrome or Edge from the Chrome Web Store.
- Follow the welcome page to connect a cloud AI provider or a model on your own computer.
- Open the side panel and describe the task you want done.
Using Claude Code, Cursor or another AI coding assistant? Paste the prompt and it will walk you through the setup.New to this?
Before you install
- Only download from the official GitHub page. Copies with similar names exist for many popular projects.
- License (Apache-2.0): Permissive: free to use, change and share, including for business.
- More on staying safe