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ThreadNote

Inline replies and bookmarks for Claude.ai conversations.

Bookmark important paragraphs, branch sub-threads from any line, and jump back to anywhere — even after Claude has scrolled it out of view.

Coming to the Chrome Web Store soon. Works on Chrome, Brave, Edge, and other Chromium browsers.

What it does

Bookmarks

Color-coded bookmarks

Flag any paragraph in any color — decision, todo, urgent, idea — and jump back with one click. Works across the whole conversation.

Threads

Inline reply widgets

Double-click any paragraph to open an inline reply widget. Branch a sub-thread without losing your place in the main conversation.

Navigation

Jump-back sidebar

The sidebar lists every bookmark and sub-thread in conversation order. Click any one and land on the original — even if Claude has virtualized it out of the DOM.

How it works

1
Hover any paragraph

The bookmark flag appears in the left margin.

2
Click to bookmark, double-click to reply

Add a colored bookmark, or open the inline reply widget at that exact paragraph.

3
Open the sidebar

Click the floating tab on the right edge to see every thread and bookmark — and jump back to any of them.

Coming soon

Cloud sync across devicesPro

Bring your own GitHub, Google Drive, or Notion. Your data, your storage, your control. We never custody your conversations.

ChatGPT supportSoon

Same ThreadNote features on chatgpt.com.

AI thread summariesPro

Collapse a long sub-thread into a one-paragraph TL;DR.

Mobile read-onlySoon

View your bookmarks and threads on the go.