Best NotebookLM Mindmap Extractor - Corrected Hierarchy Alternatives in 2026

About NotebookLM Mindmap Extractor - Corrected Hierarchy

Export Mindmaps from NotebookLM with One Click NotebookLM Mindmap Extractor is a Chrome extension that allows users to export mindmaps created in Google NotebookLM into portable formats such as FreeMind (.mm), OPML, and structured XML. It helps researchers, students, professionals, and content creators preserve and share mindmaps outside the NotebookLM environment. Key Benefits Offline Access & Portability: Export mindmaps and use them with popular tools like FreeMind, Freeplane, and other compatible editors. Multiple Export Formats: Choose from FreeMind (.mm), OPML, and structured XML formats. High Accuracy: Maintains the original structure of your mindmap, including parent-child relationships and text content. No Internet Required: All processing is done locally in your browser—your data never leaves your device. Features Smart Node Detection: Extracts nodes accurately from NotebookLM’s SVG-based interface. Hierarchical Mapping: Identifies root nodes and builds structured trees using path and position analysis. Noise Filtering: Removes interface elements and irrelevant data during export. Visual Preview: See the structure of your mindmap before exporting. Automatic File Naming: Generates clean, descriptive filenames using node content and timestamps. How It Works Open any NotebookLM page with a mindmap. Click the extension icon and start detection. Preview the structure, choose a format, and export. Who It's For Researchers & Students: Preserve study notes and literature reviews for offline use. Project Managers: Export planning mindmaps for team collaboration. Writers & Educators: Save outlines and structures for integration with writing or learning platforms. Privacy & Security All data is processed locally in your browser. The extension does not collect or transmit any user data. Requires minimal permissions. Get Started Install the extension, open a mindmap in NotebookLM, and export in just a few clicks. No setup required.