Free PDF Grayscale Converter
Convert every page to black & white and download the result — nothing is uploaded, conversion happens entirely in your browser. Need to shrink margins instead? Try the PDF Cropper, or use PDF Tools for merging, splitting, and compressing.
No file selected. You can also drag and drop here.
Each page is rendered and desaturated entirely on your device using JavaScript - your file never leaves your browser. Because pages are re-rendered as images, the result won't have selectable text.
Result
How to convert a PDF to grayscale
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1
Add your PDF
Click "Browse for a PDF" or drag a file in directly.
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2
Choose a quality level
Standard is faster; High keeps small text sharper.
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3
Click "Convert to grayscale & download"
Every page is rendered, desaturated, and reassembled right in your browser.
Example use cases
Preparing a document for black & white printing
Strip color out before printing on a monochrome printer to save on color ink.
Removing color highlighting before sharing
Neutralize colored annotations or backgrounds in a document.
Standardizing scanned pages
Convert a batch of colored scans to a consistent grayscale look.
Frequently asked questions
Will the text still be selectable after converting?
No - each page is rendered to an image and desaturated, so the output PDF is image-based, the same way a scanned document is. Original text won't be selectable or searchable.
Is my PDF uploaded to a server?
No. Every page is rendered, converted, and reassembled entirely in your browser using JavaScript - nothing leaves your device.
Why is the output file larger or smaller than the original?
Because pages become images, file size depends on the quality setting and how much detail is on each page, rather than the original PDF's internal structure.
Is there a file size or page limit?
This runs entirely in your browser, so very long documents may take longer or use more memory - the practical limit depends on your device.