How do I convert a PDF to black and white?

Upload your PDF, choose a quality preset (Balanced is recommended for most uses), then click Convert to Grayscale. Your black-and-white PDF is ready in seconds. No signup required.

Why convert a PDF to grayscale?

Converting to grayscale reduces file size, saves ink when printing on black-and-white printers, and ensures consistent appearance across different printers. It is also useful for archiving and accessibility.

Which quality preset should I choose?

Draft (96 DPI) gives the smallest file for quick sharing. Balanced (150 DPI) is the best all-round choice. High (200 DPI) is ideal for detailed documents. Print (300 DPI) gives maximum quality for professional printing.

Does grayscale conversion affect text quality?

No. Text and vector graphics are rendered at full resolution regardless of the DPI setting. Only raster images are affected by the quality preset.

How much does grayscale reduce file size?

Grayscale conversion typically reduces file size by 20–50% for colour-heavy PDFs, since colour image data is replaced with single-channel grayscale data.

How long are files stored?

All uploaded and processed PDF files are automatically deleted within 5 minutes. Files are never shared with third parties.

Grayscale PDF — Convert PDF to Black & White Free Online

Grayscale PDF

Convert any color PDF to black and white. Perfect for printing, archiving, or reducing ink usage.

Removes all color 4 quality presets Reduces ink usage Print-ready output Preserves layout Free, no signup

Upload PDF

Drop your PDF here

or browse files · Max 100 MB

Quality Preset

Higher quality = larger file size. Balanced is recommended for most uses.

Draft

96 DPI · Smallest file

Good for quick previews and internal documents

Balanced Recommended

150 DPI · Good quality

Best for most documents and screen reading

High Quality

200 DPI · Sharp text

Ideal for documents with fine text or diagrams

Print Ready

300 DPI · Largest file

Professional print quality output

Each page is rendered and re-saved as a grayscale image. Text remains readable but will no longer be selectable. For text-heavy PDFs, use High Quality or Print Ready to keep text sharp.

Why Convert to Grayscale?

Save Ink & Toner

Grayscale PDFs use significantly less ink when printed. Ideal for drafts, internal documents, and bulk printing.

Smaller File Size

Removing color data often reduces file size, making documents easier to email and share.

Consistent Printing

Avoid color inconsistencies across different printers. Grayscale always prints the same.

Archiving & Records

Many archiving standards prefer or require grayscale documents for long-term storage.

Accessibility

High-contrast grayscale can improve readability for users with certain color vision deficiencies.

Professional Look

Grayscale gives documents a clean, formal appearance suitable for legal and official use.