Convert PDF to Grayscale

Turn a colour PDF into black and white (grayscale) for cheaper printing.

How do I convert a colour PDF to black and white?

Choose the PDF and a quality level, then press Convert. Each page is rendered, converted to grayscale using standard luminance weights (21% red, 72% green, 7% blue) and saved into a new PDF.

Good to know

Pages become images, so text is no longer selectable. Keep the original if you need to edit or search it.
150 DPI is a good balance of sharpness and size; use 200 DPI for small print.
Many printers also have a "print in grayscale" option if you only need a paper copy.

Frequently asked questions

Why is my text not selectable?

The pages are rasterised during conversion.

Does it work on scanned PDFs?

Yes.

Is it private?

Yes, conversion is done in your browser.