Thoughtmark — AI Notes & Outlines

Mark any point in an AI conversation and jump straight back to it. Works on Claude, ChatGPT, Gemini, and DeepSeek.

Never lose your train of thought in long AI conversations again. Thoughtmark lets you bookmark exact sentences, formulas, and code snippets inside Claude, ChatGPT, Google Gemini, and DeepSeek — jumping straight back to them with a single click. Key Capabilities - Precision Bookmarking: Select any passage or code block in Claude, ChatGPT, Gemini, or DeepSeek and anchor it to your conversation outline. - Smart Auto-Recovery: Other extensions lose your place when long chats scroll. Thoughtmark automatically re-anchors your bookmarks as you navigate. - Global Search Across All Chats: Instantly search across every marked thought, quote, and note from one centralized dashboard. - Publication-Ready Export: Export your bookmarks and outlines as structured Markdown or formatted study guide PDFs complete with a Table of Contents. - 100% Private & Local: Your notes and bookmarks stay on your computer. Thoughtmark stores data locally in your browser with zero personal data collection.