Convert your colorful PDF to grayscale online for free. Reduce ink usage for printing and create professional black-and-white documents.
Our grayscale converter transforms all colors in your PDF — including images, graphics, and text — to shades of gray. Perfect for reducing printing costs on color printers.
The conversion uses accurate luminance algorithms to ensure the grayscale output looks natural and maintains the readability and visual hierarchy of the original.
Select or drag your PDF file to begin the conversion.
Click 'Convert to Grayscale' — the tool processes all pages at once.
Download your black-and-white PDF ready for printing or archiving.
Your files never leave your device. Everything runs directly in your browser using JavaScript — no server, no cloud, no data collection. Your documents stay private.
Black text stays black. Only colored elements are converted to gray tones.
Often yes, since grayscale images can be more efficiently compressed than color images.
Yes, you can choose to convert all pages or a selected range.
Grayscale includes all shades from black to white. True black-and-white (binary) conversion is different and less common for documents.
Yes — PDFInOne is a completely free alternative to iLovePDF, Smallpdf, PDF24, and Adobe Acrobat online. Unlike those services, PDFInOne processes everything locally in your browser: no file uploads, no account required, no file size limits, and no watermarks.