ChatGPT Timestamp Extension

A simple Chrome & Firefox extension that displays timestamps for ChatGPT messages. The timestamps are already in the DOM - this just makes them visible.

Installation

Chrome Add-on: Install from Chrome Web Store

Firefox Add-on: Install from Mozilla Add-on

Screenshot

What it does

Shows when each message was sent in a clean format: "May 12 2025 - 14:30:45" Options:

• Toggle between 12-hour and 24-hour time
• Timestamp only user posts to reduce visual clutter

Why I built this

I kept losing track of old conversations and couldn't remember when discussions happened. Now I can find specific chats by date/time instead of scrolling endlessly.

Also helpful for:

• Knowing when you hit rate limits and when they reset
• Tracking how long tasks take
• Finding different versions when iterating on code

Manual install for Chrome

1. Download this repo
2. Open chrome://extensions/
3. Enable Developer mode
4. Load unpacked → select the src/ folder
5. Visit ChatGPT