# WebBrain

> Open-source AI browser agent — chat with pages, automate tasks, multi-provider LLM support.

Canonical page: [https://chrome-stats.com/d/webbrain](https://chrome-stats.com/d/webbrain)

## Overview

- **ID:** `webbrain`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Emre Sokullu
- **Category:** search-tools,tabs
- **Daily users:** 126
- **Weekly downloads:** 20
- **Rating:** 5.00 / 5 (3 ratings)
- **Version:** 36.0.4
- **Last updated:** 2026-09-10
- **First published:** 2026-04-06
- **Size:** 14 MB
- **Data as of:** 2026-09-11
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/webbrain/)
- **Website:** [https://webbrain.one](https://webbrain.one/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/webbrain/privacy/](https://addons.mozilla.org/firefox/addon/webbrain/privacy/)

## Description

**WebBrain** is a free, open-source AI browser agent for understanding web pages, extracting structured data, and automating browser tasks. Ask questions about the current page in read-only **Ask Mode**, or let **Act Mode** click, type, scroll, navigate, and interact with websites. WebBrain supports local models through LM Studio, Ollama, and llama.cpp, as well as OpenAI, Claude, Gemini, OpenRouter, and other providers.

With optional **Apocalypse Mode**, WebBrain can continue working offline using on-device text and vision models, searchable Wikipedia archives, emergency reference PDFs, and multilingual communication tools. Smart context management helps avoid token limits, while local processing keeps sensitive data on your device. Archives display their size, source, and license before download. WebBrain is MIT-licensed and developed by Emre Sokullu.

## Rankings

- #10,466 — Overall
- #126 — tasks
- #161 — agent
- #175 — component
- #177 — answer
- #211 — web3

## Permissions and access

### Permissions

- `activeTab`
- `menus`
- `webNavigation`
- `webRequest`
- `storage`
- `unlimitedStorage`
- `tabs`
- `tabGroups`
- `notifications`
- `downloads`
- `alarms`
- `clipboardWrite`
- `clipboardRead`
- `<all_urls>`

### Content script matches

- `<all_urls>`
- `*.facebook.com`
- `*.instagram.com`
- `*.x.com`
- `*.twitter.com`
- `*.linkedin.com`
- `*.reddit.com`
- `*.youtube.com`
- `youtu.be`

## Safety

- **Risk impact:** Very high risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension was recently updated in the past month. New updates may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/webbrain)