Threadmark

Navigate, search, bookmark, and organize long AI conversations on ChatGPT and Gemini with local-first storage. Threadmark – AI Conversation Navigator helps you stay oriented in long AI conversations.

It builds a local question directory for supported ChatGPT and Gemini conversations, so you can search, jump back to important questions, bookmark key turns, add notes, and review answers without manually scrolling through long threads.

Key features:

• Question directory for the current conversation
• Search across questions, answer previews, bookmarks, and notes
• One-click jump back to a selected question
• Full scan for long conversations that are not fully loaded yet
• Bottom detail panel for reviewing the selected question and answer
• Bookmarks and local notes for important turns
• Local data management with storage usage, delete, export, and import
• English and Simplified Chinese interface
• Support for ChatGPT and Gemini conversation pages

Local-first privacy:

Threadmark stores conversation directories, bookmarks, notes, and cached answer HTML in your current browser profile. It does not upload your chat content, bookmarks, notes, directories, or cached answers to a developer server. It does not use advertising, analytics SDKs, tracking SDKs, or remote code.