Nanobrowser
What is Nanobrowser?
Nanobrowser is an open-source Chrome extension that uses AI agents to automate tasks directly in a web browser. Its multi-agent architecture assigns specialized roles such as Navigator, Planner, and Validator to coordinate complex workflows. Users provide their own API keys and can connect OpenAI, Anthropic, Gemini, Ollama, or custom OpenAI-compatible providers. The tool is designed for developers, privacy-conscious users, and anyone who wants browser automation without a subscription. Its main differentiator is local browser execution combined with flexible model selection and transparent open-source code.
How to use Nanobrowser?
1. Install Nanobrowser from the Chrome Web Store or load the extension manually from its GitHub release. 2. Open the sidebar settings, add your preferred LLM API keys, and assign models to the available agents. 3. Describe a browser task in natural language, review the agent activity, and let Nanobrowser complete the workflow.
Nanobrowser's Core Features
Multi-Agent Workflows: Coordinate specialized Navigator, Planner, and Validator agents to handle complex browser tasks.
Natural-Language Task Control: Describe the desired outcome conversationally instead of manually scripting each browser action.
Interactive Side Panel: Monitor agent status and control automations from a browser sidebar.
Cross-Site Task Automation: Automate repetitive interactions across supported websites and web applications.
Multiple LLM Providers: Connect OpenAI, Anthropic, Gemini, Ollama, or custom OpenAI-compatible providers.
Per-Agent Model Selection: Assign different models to individual agents to balance capability, speed, and cost.
Follow-Up Questions: Continue conversations about completed tasks and request contextual follow-up actions.
Conversation History: Review and manage previous interactions with the browser agent.
Open-Source Codebase: Inspect, modify, and self-build the extension through its public Apache-licensed repository.
Local Credential Storage: Keep API keys, login credentials, cookies, and extension data in the browser rather than a Nanobrowser cloud account.
Nanobrowser's Use Cases
- #1
Researching products, websites, or public information across multiple browser tabs
- #2
Automating repetitive form-filling and data-entry tasks on web applications
- #3
Comparing products, prices, or specifications across online stores
- #4
Collecting structured information from websites for research or reporting
- #5
Navigating multi-step booking, shopping, or account-management workflows
- #6
Testing browser-based user journeys and repetitive website interactions
- #7
Running custom web tasks with locally stored credentials and user-selected LLM providers
Frequently Asked Questions
Analytics of Nanobrowser
Monthly Visits Trend: Jun 2025 - Sep 2026
Traffic Sources
Top Regions
| Region | Traffic Share |
|---|---|
| United States | 26.74% |
| Vietnam | 12.28% |
| India | 11.75% |
| Indonesia | 5.63% |
| United Kingdom | 5.47% |
Top Keywords
| Keyword | Traffic | CPC |
|---|---|---|
| nanobrowser | 3.4K | $2.61 |
| nano browser | 470 | -- |
| nsano browser | 60 | -- |
| automation browser ai | 40 | -- |
| gibt es eine ki wo kann direkt mit eine browser arbeiten | 50 | -- |
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