File Formats Wiki
Portable Document Format
Filename extension .pdf +
Internet media type application/pdf
Type code 'PDF '
Uniform type identifier com.adobe.pdf
Magic number %PDF
Developed by Adobe Systems +
Opens with Adobe Acrobat
Adobe Reader
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Portable Document Format (PDF) is a fixed document file format. PDF is used for representing two-dimensional documents in a manner independent of the application software, hardware, and operating system.[1] It was created by Adobe Systems in 1993.

Each PDF file encapsulates a complete description of a fixed-layout 2-D document (and, with Acrobat 3-D, embedded 3-D documents) that includes the text, fonts, images, and 2-D vector graphics which comprise the documents.


  1. Adobe Systems Incorporated, PDF Reference, Sixth edition, version 1.23 (30 MB), p. 33