✓ 100% Free🔒 Files Stay On Device✦ No Watermark

PDF to Grayscale Remove All Colors

Convert a color PDF to black and white. Reduces file size and printing costs. Free, no upload.

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Drop your PDF here

or click to browse — up to 100 MB

0 / 1 filesMax 100MB per file

How to Convert a PDF to Grayscale — Step by Step

Converting a color PDF to grayscale reduces file size and prepares the document for black-and-white printing. Doclair converts each page to grayscale in your browser without uploading your file.

Drop your PDF or click to upload. Files stay on your device throughout.
Doclair converts all pages to grayscale. A progress bar shows page-by-page status.
Download the grayscale PDF. The file is saved directly to your device.

Why convert PDF to grayscale?

Grayscale PDFs are smaller than color files and print correctly on black-and-white printers without unexpected color shifts. This is useful for printing invoices, reports, academic papers, and forms where color is decorative rather than essential.

PDF to Grayscale on iPhone and Android

Doclair works in mobile Safari and Chrome. Upload your PDF from Files and download the grayscale version directly to your device.

Frequently Asked Questions

The output PDF uses rasterised images so the size may be comparable or slightly larger than the original. For size reduction, use Compress PDF after conversion.

The layout and text will be preserved visually. Colors are converted using standard luminance formula (NTSC weights), giving natural-looking grays.

Yes. The tool renders each page to a canvas and applies grayscale transformation pixel-by-pixel, regardless of whether the original was vector or scanned.

No. Everything runs in your browser. Your file never leaves your device.

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