Grayscale PDF – Color to Black and White
Turn a color PDF into black and white.
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About Grayscale PDF
Grayscale PDF turns a color PDF into black and white. Every page, image and chart is changed to shades of gray. The tool runs inside your browser, so your file is never uploaded to a server. It is free, needs no account and does not add a watermark to your pages.
Printing in black and white saves color ink, which helps with long notes, assignments and office reports. Some offices and forms ask for black and white copies of documents. A grayscale scan can also be smaller, which helps when you need to meet an upload limit.
How to use Grayscale PDF
- Open the color PDF.
- Convert it to grayscale.
- Download the black and white PDF.
Why use PDF Hydra
- All pages convertedText, photos and charts on every page turn to gray.
- Save printer inkPrint long documents without using color ink.
- Can reduce sizeBlack and white scans are often lighter than color ones.
- Private and freeRuns in your browser with no upload and no sign-up.
Frequently asked questions
How do I convert a color PDF to black and white?
Open the PDF in Grayscale PDF, convert it and download the result. Every page is changed to shades of gray.
Will grayscale make my PDF smaller?
It often helps with color scans and photos. For a set size limit, use Compress PDF to Size after converting.
Can I undo the grayscale change?
The new file cannot get its colors back. Keep your original color PDF if you may need it later.
Is my file uploaded?
No. The conversion happens in your browser and your file stays on your device.