Free Grayscale PDF Tool
Grayscale PDF converter online free
Convert every page of a PDF to grayscale. Use the tool below, then download the converted file.
Browser-based grayscale converter
Convert every page of a PDF to grayscale and download a new file. Useful for black-and-white printing and documents that don't need color.
Your files are handled safely
✔ Processing happens in your browser
✔ Your file is never uploaded to a server
✔ Your files are not stored or saved anywhere
✔ No account or sign-up required
Why Use It
Common reasons people convert PDFs to grayscale
Cheaper black-and-white printing
Color printing costs more per page. Converting to grayscale first avoids accidental color print charges.
Consistent look for scanned documents
Mixed color and black-and-white scans look more consistent once every page is grayscale.
Smaller file size in many cases
Grayscale images often compress smaller than full-color ones, which can shrink the final PDF too.
How It Works
Simple 3-step workflow
1. Choose your PDF
Choose the PDF file you want to convert.
2. Convert to grayscale
Every page is converted to grayscale and rebuilt into a new PDF.
3. Download the file
Save the grayscale PDF to your device.
What to Know Before Converting
This rebuilds each page as an image
To apply grayscale, each page is rendered at high resolution and rebuilt into a new PDF. That means the output looks the same as the original but is image-based — text will no longer be selectable or searchable, even if it was before.
FAQ
Grayscale PDF questions
Will the text in my PDF still be selectable after converting?
No. Each page is rendered as a grayscale image and rebuilt into a new PDF, so the output is image-based — text will no longer be selectable or searchable.
Will the file size change?
Often it goes down, since grayscale images typically compress smaller than color ones, but this depends on the original document.
Is my file uploaded to a server?
No. Conversion runs entirely in your browser. Your PDF is never uploaded to a server, and nothing is stored.