Grayscale PDF

Printers often use some color ink even for "black" text in a color document, mixing cyan, magenta, and yellow to produce rich blacks. A true grayscale PDF only needs black, so cartridges last longer and print jobs run faster. It also removes surprises: colored highlights and backgrounds that would print as muddy gray blocks become visible in the preview before you commit to paper.

Choose Grayscale for documents with photos, charts, maps, or brand imagery — every color becomes a matching shade of gray, so detail and depth are preserved. Choose Black & White for text-heavy documents, forms, and receipts. It produces razor-sharp, high-contrast pages, and the threshold slider lets you decide how dark a shade must be to become black.

Phone scans and photocopies often have gray or yellowish backgrounds, shadows, and faint text. Black & White mode is an easy fix: lower the threshold to wash out a dirty background, or raise it to make faint handwriting and pencil marks bolder. The result is cleaner to read, prints without wasting toner on backgrounds, and is easier for fax machines and OCR software to handle.

Checking a document in grayscale is also a quick accessibility test: if charts or labels rely on color alone, they become hard to tell apart, which is how the content may look to readers with color vision deficiency. And because black-only printing uses less ink and fewer cartridges, it's a small but real step toward a lower environmental footprint.