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Nanobrowser

by NanobrowserAgentGet organised

Works through web pages for you in Chrome, clicking, typing and moving between tabs

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About Nanobrowser

Nanobrowser is an open-source AI agent that runs as a Chrome or Edge extension. You type a task in the side panel and it reads pages, clicks, types and moves between tabs, using your own AI model key.

For People automating daily web tasksPeople comparing options onlinePeople collecting data from pages

Made by Nanobrowser

An open-source project published on GitHub under the Nanobrowser organisation; its site does not name the team behind it.

Stars
★ 14k
License
Apache-2.0
Cost
Usage-based
Platforms
Mac · Win · Linux
Level
Intermediate

Overview

Nanobrowser is an open-source AI agent that runs as a Chrome or Edge extension. You type a task in the side panel; it reads the pages, clicks, types and moves between tabs, and can save results such as a CSV table or a Markdown report to your Downloads folder. By default it asks before it submits, sends, deletes or uploads anything, and it hands payments and passwords to you. It works with your own key from a cloud model provider or a model on your computer, and suits anyone who repeats the same web chores.

It is free and runs in your own browser, and per-site rules let you allow, ask about or block what the agent may do.

Try these first

Start with the first one: it is a small task you can check easily.

  1. Summarise this page in a few bullet points.First try · read-only

  2. Compare the three products I have open and put their prices and specs in a table.

  3. Collect the top 10 headlines from [news site] from the last 24 hours and save them as a CSV file.saves a file

  4. Find a [product] on [shop] that meets [your requirements] and show me the link.

Example prompts written by Agent Flows Hub.

Features

From the creator's documentation.

FeatureWhat it doesRuns
Side panel chatDescribe a task in plain words on the current tabYour browser
Page actionsReads pages, clicks, types and moves between tabs in the browser you already useYour browser
Ask or Auto modeAsks before it submits, sends, deletes or uploads, unless you choose AutoYour browser
Site rulesAllow, ask or block the agent for each siteYour browser
Saved resultsSaves CSV tables or Markdown reports to your Downloads folderYour computer
ModelsCloud providers with your own key, or Ollama and LM Studio on your computerProvider API or local

Good to know

Hand repetitive browser work to an agent, such as comparing products open in several tabs or collecting headlines into a CSV file. It acts in your own browser and pauses for approval before steps that submit, send, delete or upload.

Limits

  • Pages the agent reads go to the model you choose, and a daily anonymous count of users and usage is sent to the project. The README notes the agent may not notice every step that needs you.
  • Only Chrome and Edge are supported. The README suggests keeping local models to simple, clear tasks.

Notes by (original project name: Nanobrowser), written from the creator's documentation, not from running it ourselves. Nanobrowser: README and quick start

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