Is grayscale the same as pure black and white?

No. Grayscale preserves shades between black and white, which keeps photographs and shaded charts readable.

Will text remain selectable?

No. Pages are rasterized so all colours can be converted consistently.

Can the file become larger?

Yes. Vector-heavy PDFs can grow because each page becomes an image. Scanned documents are the best fit.

PDF Tools

Grayscale PDF

Convert every PDF page to grayscale for monochrome printing and smaller scans.

Free foreverRuns in your browserNo sign-up

Drop a PDF here, or click to choose

Processed locally in your browser.

About the Grayscale PDF

Grayscale PDF renders each page using luminance-based colour conversion, preserving tonal differences while removing colour. Adjust output quality to balance clarity and file size.

It is useful for monochrome printing, archiving scans and checking how colour documents will appear on black-and-white printers.

Key features

Luminance-based grayscale
Adjustable JPEG quality
Progress display
Private local conversion

How to use

1Upload a PDF.
2Set the output image quality.
3Convert every page and download the grayscale PDF.

Examples

Prepare colour slides for printing

Input: Colour presentation PDF

Output: Grayscale print-ready PDF

Check charts after conversion because similar colours can become similar gray tones.

Frequently asked questions

Is grayscale the same as pure black and white?: No. Grayscale preserves shades between black and white, which keeps photographs and shaded charts readable.
Will text remain selectable?: No. Pages are rasterized so all colours can be converted consistently.
Can the file become larger?: Yes. Vector-heavy PDFs can grow because each page becomes an image. Scanned documents are the best fit.