Adds a navigable table of contents sidebar to Claude.ai and ChatGPT chat threads
Users
32
+1 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
2
0 in 30 days
Store rank
#128K
#107K among extensions
Version
1.1.0
updated 17 Dec 2025
Users
monthly, 10 months
Latest, 20 Oct 2026:32 usersMove the mouse over the chart for any month
Ratings count
monthly, 10 months
Latest, 20 Oct 2026:2 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Threadline
Threadline:
A Chrome extension that adds a navigable table of contents sidebar to Claude.ai and ChatGPT chat threads.
Problem:
Long AI chat conversations become difficult to navigate. Scrolling through 50+ message exchanges to find a specific topic is tedious and time-consuming.
Solution:
Threadline adds a fixed sidebar that displays all your message exchanges as a clickable table of contents. Jump to any part of the conversation instantly.
Features:
- Visual timeline - See all conversation exchanges at a glance with numbered entries
- Click to navigate - Jump to any message instantly with smooth scrolling
- Hover previews - See full message preview in tooltip before clicking
- Auto-updates - New messages appear in real-time as you chat
- Theme aware - Automatically matches light/dark mode
- Collapsible - Minimize to a small icon when not needed
- Smart positioning - Adjusts when you toggle the site's sidebar