AI Multi-Window Chat

A modern browser extension for multi-window AI conversations

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Overview

AI Multi-Window Chat lets you open multiple draggable chat windows on any page, send selected text to a new chat, and manage/export conversation history. It works with OpenAI-compatible APIs by configuring a base URL, API key, and model.

Website: https://wenrizc.github.io/AI-Multi-Window-Chat/

Features

• Multi-Window Chat - Open multiple independent chat windows at once
• Floating Windows - Drag, resize, minimize, and close
• Selection - Highlight text to launch a new chat with the selection
• History Management - Auto-save, reopen, delete, and export chats
• Multiple Export Formats - Export chats as Markdown (.md) or JSON (.json)
• Prompt Management - Create, edit, delete, import, and export custom system prompts
• Flexible Model Settings - Configure transport, reasoning format, streaming, and context window per model
• OpenAI Compatible - Works with any OpenAI-compatible API endpoint

Install

Install from Chrome Web Store

Install directly from the Chrome Web Store:

• https://chromewebstore.google.com/detail/ai-multi-window-chat/jeegcgffcgpeojhgjmgmjahhgdmcnacm?hl=en-US

Quick Install

1. Download the latest release package from the Releases page
2. Extract the downloaded zip file
3. Open Chrome and go to chrome://extensions/
4. Enable "Developer mode" (top right)
5. Click "Load unpacked" and select the extracted folder

Install from Source

1. Install dependencies:
   • npm install
2. Build the background service worker:
   • npm run build
3. Open Chrome and go to chrome://extensions/
4. Enable "Developer mode" (top right)
5. Click "Load unpacked" and select the release folder

Configure API

1. Click the extension icon to open the settings popup
2. In the Config tab, fill in:
   • API URL: e.g., https://api.openai.com/v1
   • API Key: your API key
   • Model Name: e.g., gpt-5
   • Transport: chat_completions or responses
   • Reasoning Format: choose the format your provider returns
   • Streaming / Max Context Messages: set per-model response behavior
3. Click "Save Config"

Usage

• Select text on a page, then click AI Chat in the floating toolbar.
• Press Alt+N to open a new chat window with the current selection.
• Press Alt+M to close the most recently opened chat window.
• Click the window title to rename it.
• Open the History tab to reopen, export, or delete chats, and export history as Markdown or JSON.
• Use the Prompts tab to manage custom system prompts for your conversations.
• Use the Config tab to manage multiple API configurations, reasoning format, streaming, and context window limits.

License

MIT License