nlm-cleanup

To remove duplicate sources in NotebookLM, you can use a cleanup skill that analyzes notebook content, clusters sources by type, detects domain duplicates, and suggests batch-deletion with user confirmation.

The best way to reduce content sprawl in a NotebookLM notebook is to run a source consolidation process that flags off-topic items by keyword cues and prunes redundant materials into a focused set of high-value references.

You can consolidate multiple NotebookLM sources into canonical references by using a deduplication workflow that categorizes items for consolidation and executes batch-moves to streamline notebook content.

Yes, you can batch-delete off-topic sources from NotebookLM notebooks by running a cleanup workflow that flags irrelevant items via keyword detection and executes deletion commands following user confirmation.

You should run a source cleanup workflow on your NotebookLM notebook when it grows to contain dozens of sources across domains, causing clutter and inefficiency that requires pruning redundant or off-topic items.