PS file format: what it is and how to use it

PostScript is the original page description language: programs that printers execute to draw pages, the ancestor of PDF and the soul of the print industry. Learn when to use it and what to choose instead.

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What is a PS file?

A .ps file is a document written in PostScript, Adobe's 1984 page description language: not data but a stack-based program a printer or interpreter executes to render vector graphics, text and images. It powered the desktop-publishing revolution and is the direct ancestor of PDF, which is PostScript tamed into a document format.

When should you use PS?

  • Direct-to-printer pipelines: PostScript-capable printers still consume it natively.
  • Legacy scientific graphics: decades of LaTeX-era figures were published as .ps/.eps.
  • Ghostscript workflows: the format the interpreter ecosystem speaks.

When is another format a better fit?

For documents, PDF, its own descendant, is the answer on every axis: portable, viewable, secure. For vector graphics SVG; for embedded single-page figures the encapsulated variant EPS. PS today is infrastructure you encounter more than choose.

The short version: PS is the printer's programming language: historically foundational, but functionally replaced by PDF.

How to open a PS file

On Windows

Double-click the file, or open it with Adobe Acrobat Distiller.

In your browser

Open PS files right in a browser tab or with the dexrr viewer. No install, no upload.

Also opens in

  • Ghostscript / GSview
  • Adobe Acrobat Distiller
  • Any PostScript printer

View or convert PS files

A quick preview or a new format. No install, no upload.

View PS files Preview and inspect PS files Convert to PS Turn files into PS PS to PDF Portable Document Format PS to SVG Scalable Vector Graphics

PS technical details

Full name
PostScript
Extensions
.ps
MIME type
application/postscript
Magic bytes
25 21 (%!)
Compression
None (uncompressed)
Developer
Adobe
Specification
www.adobe.com

PS questions, answered

How do I open a .ps file?

Ghostscript, Acrobat Distiller and PostScript printers render it; browsers do not. dexrr displays and converts ps files directly in your browser.

Can I convert PS files online?

Yes, dexrr converts ps locally in your browser: PS to PDF for viewing or PS to PNG for raster output.

Is PS better than PDF?

For driving a PostScript printer it is the raw material; for everything else PDF, literally PostScript's portable descendant, is better.

What is the difference between .ps and .eps?

EPS is PostScript constrained to a single page with bounding-box rules so it can embed inside other documents; plain .ps is a full print job.

Is the PS format outdated?

As a document format yes, PDF won in the 90s. As printer infrastructure it still lives inside the print pipeline.