PDF to Grayscale - Convert Color PDF to Black & White

Convert color PDFs to grayscale for printing or smaller file size. Preserves text quality. Free, private, browser-based conversion.

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Security: Only process files from sources you trust. All processing happens locally in your browser.

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Frequently Asked Questions

Grayscale PDFs print faster on black-and-white printers, reduce toner costs, produce smaller files, and ensure consistent output when color isn't needed.

The tool renders each page as an image, converts colors to grayscale using standard luminosity formulas, then reassembles pages into a new PDF document.

Text is rendered at high resolution (150-300 DPI) to maintain readability. For best results with text-heavy documents, use higher DPI settings.

150 DPI is good for screen viewing and draft prints. 200 DPI balances quality and file size. 300 DPI is recommended for professional printing.

Grayscale PDFs are often smaller than color originals because grayscale images require less data. Higher DPI settings will increase file size.

This tool converts all pages. To convert specific pages, first extract those pages using a PDF splitter, then convert the extracted document.

No. All processing happens locally in your browser using JavaScript. Your document never leaves your device.

Forms and annotations are flattened during conversion. Interactive elements become static grayscale content in the output.

No. The original color information is lost during conversion. Keep your original file if you may need colors later.

Interactive elements like hyperlinks are not preserved. The output is an image-based PDF optimized for printing.

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