LLM Copy Block

LLM Copy Block is a Chrome extension designed to prevent text selection and copying on major Large Language Model (LLM) websites. It is intended for educational or self-discipline purposes to encourage manual typing over copy-pasting code or text.

Features

• 🚫 Disable Text Selection: Prevents highlighting text using the mouse or keyboard shortcuts.
• ✂️ Block Copy/Cut: Intercepts and blocks clipboard events (Ctrl+C, Ctrl+X, Right-click > Copy).
• 🙈 Hide Copy Buttons: Automatically detects and hides "Copy" buttons in chat interfaces (supporting ChatGPT, Claude, and Gemini) using DOM mutation observers.
• ⏸️ Temporary Pause: Includes a popup interface to pause the blocking behavior for 1 minute, allowing for quick, necessary copies without disabling the entire extension.

Supported Websites

The extension is currently configured to target:

• ChatGPT (chatgpt.com)
• Claude (claude.ai)
• Google Gemini (gemini.google.com)

Installation

Since this is a custom extension, you must install it in "Developer Mode":

1. Clone or Download this repository to your local machine.
2. Open Google Chrome and navigate to chrome://extensions.
3. Toggle Developer mode in the top right corner.
4. Click Load unpacked.
5. Select the folder containing the manifest.json file.
6. (Optional) Pin the extension to your toolbar for easy access to the Pause button.

Usage

• Active Mode: By default, whenever you visit a supported LLM site, text selection and copying are disabled.
• Pausing:
  1. Click the "LLM Copy Block" extension icon in the toolbar.
  2. Click the "Pause (1 min)" button.
  3. The protection will be lifted for 60 seconds. A countdown will appear in the popup.
  4. Once the timer expires, blocking automatically resumes.

Directory Structure

llm-copy-block/
├── icons/              # Contains extension icons (e.g., icon128.png)
├── content.js          # Logic for blocking events and hiding buttons
├── manifest.json       # Extension configuration and permissions
├── popup.html          # HTML for the popup interface
└── popup.js            # Logic for the pause timer