Free Bulk PDF to Black & White Converter
Turn lots of colour PDFs into greyscale in one go. Save colour ink when printing, and make files smaller. Text and drawings stay sharp.
Quick human check, then the tool unlocks:
Drop PDF files or whole folders here
Up to 100 MB per file. Other files in a folder are skipped.
How to make PDFs black & white in bulk
- Drop in your PDFs, or press Choose a folder.
- Choose a picture quality. "Keep pictures as sharp as they are" changes only the colours.
- Press Convert, then download each PDF or everything as one ZIP that keeps your folder layout.
🔒 PDFs are converted on our server, two at a time, over an encrypted connection. Each file is deleted as soon as it has been converted. Nothing is kept or looked at.
Good to know
- Colours become matching shades of grey, so charts and photos still make sense.
- Text stays real text: it can still be selected, searched and copied.
- Password-protected or restricted PDFs must be unlocked first with the PDF Unlocker.