Turn a colour PDF black & white — cheaper to print
Colour printing is expensive. This tool converts a PDF to grayscale or pure black and white, so it prints cleanly and the file gets lighter too.
Size. A colour scan stores three values per pixel; greyscale stores one. Converting a scanned document often cuts the file to a third of its size, which is frequently enough on its own to get under an upload limit.
Printing cost. Some printers pull a little colour ink for anything that is not perfectly neutral — and a scan of white paper never is. Converting first guarantees the printer uses only black, which matters when you are paying per page at a shop.
Greyscale keeps shades, so photographs and stamps still look like themselves. Pure black & white keeps only black and white with nothing in between: the smallest possible file and very crisp for plain printed text, but it destroys photographs and can drop out faint handwriting.
For a document with an identity photo on it, use greyscale. For typed pages, black & white.
No, the pages become images.
For text-only documents — it produces the smallest file.
No. The conversion runs in your browser.
Colour scans often drop to a third. Text-only PDFs barely change.
Not from the converted file — keep your original.
Usually, but some insist on colour for identity documents so a seal or signature is visible. Check before you send it.
🔒 Everything on this page happens inside your browser. Your file is never uploaded to a server.