Software and Printing: Why We Ask for a PDF

Every time a print business asks for a PDF or a print-ready PNG, that request exists because of decisions made in the 1980s and early 1990s. The file formats behind modern printing have their own history, and it explains why some files print perfectly and others don't.

PostScript: A Common Language for Printers

Before 1984, every printer manufacturer effectively spoke its own language, so a document designed for one machine often wouldn't print correctly on another. Adobe's PostScript, created by John Warnock and Charles Geschke, solved this by becoming a universal page-description language: a way of describing exactly what a page should look like, independent of whatever printer eventually output it. It's the reason a design can be sent to a completely different printer than the one it was created on and still come out right.

The Adobe Toolchain

PostScript was the foundation for the design software that followed: Illustrator, Photoshop and later InDesign, all built around the same idea of precise, device-independent page description. Together with early desktop publishing software, they turned professional print design from a specialist trade into something achievable on an ordinary desk.

1993: The Portable Document Format

PDF, introduced by Adobe in 1993, solved a related but different problem: sharing a finished, print-ready document that would look and print identically no matter what computer or printer opened it. That reliability is exactly why PDF became, and remains, the standard format for sending artwork to a printer.

Why File Format Still Matters

This history is why we're specific about what we ask for: a PNG with a genuinely transparent background, or a properly exported PDF, prints reliably because the file describes exactly what should appear on the page. A screenshot or a low-resolution JPEG doesn't carry that same precision, which is where print quality problems usually start.

Where This Shows Up in What We Print

We accept PNG, JPG, PDF, AI and SVG files across our custom clothing printing and business stationery ranges, and we'll flag it honestly if a file isn't print-ready before anything goes to press.

Frequently asked questions

Why do printers prefer PDF files?

PDF, introduced by Adobe in 1993, was designed so a document looks and prints identically regardless of what computer or printer opens it, which is why it became the standard format for sending artwork to print.

What is PostScript and why does it matter for printing?

A page-description language created by Adobe in 1984 that describes exactly what a page should look like, independent of the specific printer used, solving the problem of documents printing differently on different machines.