PDF to Black & White

Threshold every page to pure black and white — smallest possible print.

Select a PDF

Click to choose, or drop a file here

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PDF to Black & White — frequently asked questions

How is this different from grayscale?+

Grayscale keeps shades of grey; this forces every pixel to pure black or pure white — the smallest possible file and the sharpest fax/print.

Is it reversible?+

No — pages become flat black-and-white images. Keep your original.

Do you upload my files to a server?+

No — every tool here processes your files entirely on your device, and nothing is uploaded to a server. The AI tools that used to send extracted text to a server are currently disabled.

Is there a file size limit?+

There's no artificial limit we impose, but since processing happens in your browser, very large files (500+ MB or 1,000+ pages) are limited by your device's memory rather than by us.