notebooklm-remover

Remove NotebookLM watermarks from images via CLI or Node.js API. 100% local processing — your files never leave your machine.

For video, PDF, PPTX, Gemini image, and audio processing, use the full online tool: notebooklmremover.org

Install

npm install -g notebooklm-remover

CLI Usage

# Single image
notebooklm-remover slide.png cleaned.png

# Batch process a folder
notebooklm-remover ./slides/ ./output/

# Custom threshold
notebooklm-remover slide.png cleaned.png --threshold 45

API Usage

const { removeWatermark } = require('notebooklm-remover');

await removeWatermark('input.png', 'output.png', {
  threshold: 60,  // Detection sensitivity (default: 60)
  scanW: 0.22,    // Scan width ratio (default: 22% from right)
  scanH: 0.08,    // Scan height ratio (default: 8% from bottom)
});

How It Works

1. Scans the bottom-right corner of the image (where NotebookLM places its logo)
2. Detects dark pixels against the background using median-based thresholding
3. Replaces detected watermark pixels with sampled background from above the region
4. Multi-pass detection with adaptive thresholds for various backgrounds

Supported Formats

| Format | CLI | Online Tool | |--------|-----|-------------| | PNG/JPG/WebP images | ✅ | ✅ | | Video (MP4) | ❌ | ✅ notebooklmremover.org/video | | PDF slides | ❌ | ✅ notebooklmremover.org/slides | | PPTX | ❌ | ✅ notebooklmremover.org/pptx | | Gemini images | ❌ | ✅ notebooklmremover.org/gemini-image | | Audio trimming | ❌ | ✅ notebooklmremover.org/audio | | Metadata removal | ❌ | ✅ notebooklmremover.org/metadata |

License

MIT