PDF to Black & White
Threshold a PDF to pure black and white — smallest files, crispest text.
About the PDF to Black & White
PDF to Black & White thresholds every page of a PDF to pure black on white. The result is the smallest possible file size with maximally crisp text — perfect for scanned notes, forms, receipts and OCR pre-processing.
How to use
- Upload the PDF.
- Adjust the threshold slider if needed (default 150 works for most scans).
- Press Convert to B&W and download the result.
Benefits & key features
- Smallest possible file size.
- Crisp, high-contrast output.
- Adjustable threshold for faint handwriting.
- Great OCR pre-processing step.
Pro tip
If text comes out broken, lower the threshold (try 120). For very light handwriting, try 180+.