NotebookLM mind maps: a navigation tool, not a poster
Most people generate a mind map, look at it for ten seconds and move on. That misses the point: every node is a clickable entry into your sources, and the shape of the map tells you what your notebook is missing.
Click Mind Map in the Studio panel. NotebookLM builds a branching diagram of the concepts across your selected sources. Zoom and collapse branches, click any node to open a chat scoped to that topic, and use the download button to export the current view as a PNG.
Clicking nodes is the actual feature
Click a node and NotebookLM opens a chat question scoped to that branch. This changes how you explore a big notebook: instead of inventing questions from a blank input box, you browse the map, find the branch you care about, and drill in. For a fifty-source notebook it is the closest thing to a table of contents that spans everything.
Read the map as a gap report
The map is generated from your sources, so its shape is diagnostic. A branch with one thin twig where you expected a canopy means your notebook barely covers that topic. Students use this to find the lecture they skipped; researchers use it to decide what to source next; writers run it on their own drafts to see which subplot is underdeveloped. The weak branches are your to-do list.
Getting a better map
- Rename sources first. Source titles feed the map. Descriptive names produce meaningfully better branch structure than
document(3).pdf. - Scope with checkboxes. A map of two selected sources is tighter and deeper than a map of all fifty. Generate several scoped maps rather than one mega-map.
- Collapse aggressively. Fold away the branches you know. What remains is the part of the material you have not internalized yet.
Exporting and sharing
The download button exports a PNG of the map as currently expanded, so collapse the noise before exporting. Anyone you share the notebook with can open the interactive map themselves. For a document version of the same structure, generate a study guide or briefing doc from the same sources and export that to PDF; map plus document covers both ways people like to review.
Limitations worth knowing
- There is no in-place regeneration. If sources changed, delete the map and generate a new one.
- Mind maps are not available in the mobile app; this is a desktop feature.
- Free accounts can generate 10 mind maps per day, Pro 100. Scoped regeneration burns through that faster than you would expect.
FAQ
How do I create a mind map in NotebookLM?
Open your notebook and click the Mind Map tile in the Studio panel. The map generates from the sources currently selected in the Sources panel.
Can I edit a NotebookLM mind map?
You can expand and collapse branches, but not add or edit nodes. To change the content, change the source selection and regenerate.
How do I export a mind map?
The download button saves the current view as a PNG. Collapse irrelevant branches first, since the export reflects the expanded state.
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