AI Chat Export Chrome Extension

Chrome extension for exporting conversations from Gemini and ChatGPT as Markdown, JSON, or plain text. The extraction layer is platform-aware, while formatting, download, and packaging stay shared.

What It Supports

• Gemini conversation export
• ChatGPT conversation export
• Markdown, JSON, and TXT output
• Dialog-only export on both platforms
• Gemini canvas export
• Gemini generated-image export with optional visible watermark removal
• Thread anchor panel for long conversations
• English and Chinese popup UI

Platform Behavior

Gemini

• Extracts user messages, assistant responses, and Gemini thought blocks when available
• Supports Dialog, Canvas, and Both
• Can export generated images
• Can optionally attempt visible watermark removal during image export
• File naming prefers Gemini page metadata and falls back to the first user prompt

ChatGPT

• Extracts turns from article [class*="group/turn-messages"]
• Detects user messages via .user-message-bubble-color
• Supports Dialog export
• Reuses the shared anchor panel and export pipeline
• File naming prefers document.title, which maps better to ChatGPT thread titles than DOM headings

Architecture

The codebase is split into two layers:

1. Platform layer

   • URL detection
   • platform capability flags
   • DOM selectors
   • title extraction rules
   • scroller and anchor hints

2. Shared export layer

   • markdown conversion
   • export formatting
   • file download
   • popup settings
   • floating export UI

This keeps Gemini-specific and ChatGPT-specific DOM logic out of the shared export pipeline.

Installation

1. Clone this repository.
2. Open chrome://extensions/.
3. Enable Developer mode.
4. Click Load unpacked.
5. Select this repository directory.

Usage

1. Open a supported conversation page on Gemini or ChatGPT.
2. Open the extension popup and choose:
   • language
   • export format
   • export type
   • Gemini watermark-removal option if needed
3. Click the floating Export button on the page.
4. Wait for the download to complete.

Export Types

• Dialog: exports the conversation turns
• Canvas: exports Gemini canvas content only
• Both: combines Gemini dialog and canvas content when both exist

For ChatGPT, Canvas and Both currently degrade to dialog-only behavior because ChatGPT canvas/artifact support has not been implemented in this extension.

Thread Anchor Panel

• Rendered on supported pages as a right-side panel
• Collapsed by default
• Shows turn snippets for quick navigation
• Uses platform-specific message sources under a shared UI

Development

Project Structure

gemini-export/
├── manifest.json
├── assets/
├── src/
│   ├── background/
│   ├── content/
│   │   └── modules/
│   │       ├── platforms.js
│   │       ├── conversation_extractor.js
│   │       ├── project_utils.js
│   │       ├── scroller.js
│   │       └── ...
│   ├── popup/
│   └── lib/
├── tests/
└── README.md

Local Verification

Install test dependencies once:

npm install

Run tests:

npm test

Manual Checks

• Refresh the unpacked extension in chrome://extensions/
• Verify export on a Gemini conversation
• Verify export on a ChatGPT conversation URL like https://chatgpt.com/c/<thread-id>
• Check that ChatGPT filenames use the page title

Notes

• All extraction runs locally in the browser.
• No conversation data is uploaded by the extension.
• ChatGPT DOM structure can change without notice; selectors are centralized so future updates stay local to the platform layer.

Reference

Inspired by gemini_chat_export.