Portable Document Format

This format was created by Adobe corporation to enable document exchange in print ready format. Documents in this format could be read by Adobe Acrobat Reader available here.

File Sample

You can see sample file here. If you can view this file it means you have Acrobat Reader installed.

Hex Dump

This is how File in Portable Document Format can look like in hex editor. Files in this format will always start with %PDF-X.X% where X.X is a format version number.