页面描述语言（简称 PDL）是一种在较高层次上描述实际输出结果位图的描述页面内容的语言。 一些页面描述语言并不完备，很难称为是一种编程语言，但是作为页面描述语言之一的 PostScript 则是一个非常完备的编程语言。

A page description language (PDL) is a language that describes the appearance of a printed page in a higher level than an actual output bitmap. An overlapping term is printer control language, which includes Hewlett-Packard's PCL. PostScript is one of the most noted page description languages. The markup language adaptation of the PDL is the page description markup language.