NotebookLM Deduper

Instantly scan your Google NotebookLM notebooks and safely remove duplicate sources with one click.

Declutter your NotebookLM workspaces in seconds! Google NotebookLM is an incredible tool for AI-assisted research, but it currently lacks a native way to handle duplicate sources. If you've ever accidentally uploaded the same PDF, website, or document twice, you know how frustrating it is to manually hunt them down and delete them one by one to free up your 50-source limit. NotebookLM Deduper solves this problem entirely. ✨ Features: Instant Scanning: Click the extension icon to instantly scan your active notebook for any duplicate source titles. Visual Checklist: Review all found duplicates in a sleek, modern interface. Uncheck any sources you want to keep. 1-Click Deletion: Click "Remove Selected" to automatically process and delete the duplicates from your notebook. Failsafe Security: Built with robust safety checks. The extension actively reads Google's confirmation modals to guarantee it never deletes the wrong file. 🛡️ Privacy & Security: No Data Collection: This extension runs entirely locally on your machine. It does not collect, store, or transmit your NotebookLM data, sources, or any personal information. Safe Automation: The script simply mimics human clicks within your browser, ensuring your NotebookLM workspace remains completely stable. Note: This extension is an independent tool and is not affiliated with, endorsed by, or sponsored by Google or NotebookLM.