Last updated: October 2026
How to convert a PDF to black & white
Short answer: drop your PDF above, click Convert, and download the grayscale copy. Every page is re-rendered in black & white at high resolution — entirely on your device, with no upload.
Why convert to grayscale?
Cheaper printing — black & white prints cost a fraction of color. Fax & e-ink — some fax machines and e-readers handle grayscale far better than color. Smaller files — grayscale pages are usually lighter than color ones. (What grayscale means) And because this tool never uploads your file, it's safe for contracts, bank statements, and other sensitive documents.
Frequently asked questions
Is my PDF uploaded anywhere?
No. The entire conversion runs in your browser with JavaScript — your PDF never leaves your device, which makes this safe for sensitive documents.
Will the text still be selectable after conversion?
Pages are re-rendered at high resolution during conversion, so text selection and copying won't work in the grayscale copy. The visual quality is preserved — ideal for printing, faxing, and archiving.
Why convert a PDF to grayscale?
Black & white printing costs far less than color, some fax machines and e-ink readers handle grayscale better, and grayscale files are often smaller.
Is there a file size or page limit?
No hard limit — but very large PDFs (hundreds of pages) take longer since every page is processed on your device. Your browser's memory is the only constraint.
Does it work on scanned PDFs?
Yes — scanned pages are just images, and they convert to grayscale the same way as text pages.