NotebookLM mind maps: a navigation tool, not a poster

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.