Convert PDF to Grayscale
Save ink and shrink file size by removing colour — free and private.
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Printing a colour PDF in black and white? PDF Boy's PDF to Grayscale tool converts every page to grayscale so it prints cleanly and uses less ink — often producing a smaller file too. Note that pages are rendered as images, so text is no longer selectable.
How to use PDF to Grayscale
- Select your PDF.
- Choose detail level and image quality.
- Click Convert to Grayscale and download the black-and-white PDF.
Frequently Asked Questions
How do I convert a PDF to black and white?
Upload the PDF, choose a detail level and click Convert to Grayscale.
Will the text still be selectable?
No. Pages are converted to images to remove colour, so text can no longer be selected or searched.
Does grayscale make the PDF smaller?
Often yes, especially for colour-heavy PDFs. Choose Low detail for the smallest file.
Is the PDF to Grayscale tool free and unlimited?
Yes. PDF Boy's PDF to Grayscale tool is completely free, with no signup, no watermark and no limit on how many files you process.
Are my files uploaded to a server?
No. Everything happens locally in your browser, so your files never leave your device.