Convert a PDF to black and white
Turn a PDF into greyscale, to print without using colour ink or to meet a black-and-white requirement.
Drop your files here
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🔒 Processed on your device, never uploaded
∞ Unlimited: no limit on file size or number of files
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Preview
How do I convert a colour PDF to black and white for printing?
Add your PDF to Lunyce, start the conversion and download the greyscale version, so you can print without colour ink. Pages are turned into 150 dpi greyscale images, which guarantees a fully black and white result but makes the text unselectable. It all happens in your browser, for free, with no upload or account.
How to
- Add your PDF.
- Start the conversion.
- Download the black and white PDF.
Frequently asked questions
Does the text stay selectable?
No: pages are converted to greyscale images (150 dpi), which guarantees a 100% black and white result.
Are my files uploaded to a server?
No. Processing happens entirely in your browser, on your device. No file is uploaded or stored. You can check: once the page has loaded, disconnect from the internet and the tool still works.
Is there a file size or number limit?
No. Since nothing goes through our servers, there is no quota. The only limit is your device's memory: a computer handles very large files more easily than a phone.
Is it really free?
Yes. No sign-up, no watermark added to your documents and no usage limit.