Convert a color PDF to black and white / grayscale. Great for printing cost savings.
A PDF to grayscale converter is a free online tool that converts all colour pages in a PDF document to black and white (grayscale). This reduces file size, saves colour ink when printing and is required for certain printing and archival standards.
Convert colour PDFs to grayscale to print on a black-and-white printer or reduce colour printing costs significantly.
Greyscale images are smaller than colour images — converting reduces PDF file size, especially for image-heavy documents.
Some archival standards (PDF/A) and submission requirements specify grayscale-only documents.
High-contrast grayscale improves readability for people with certain types of colour blindness.
Yes — colour PDFs contain three colour channels (RGB), while grayscale uses one. Converting typically reduces image-related file size by 50–70%.
No — once converted, colour information is permanently lost from the downloaded file. Always keep a copy of the original colour PDF.
Yes — coloured text is converted to black or appropriate gray shades. Most text is already black so the visual difference is minimal.
Grayscale includes all shades between black and white (256 levels). Pure black-and-white (1-bit) only has fully black or fully white pixels, which is harsher and used for simple line art or documents with no shading.