Filename Extensions
If you are seeking information about file extensions, then you are in the right place at right time.

Details of extension .pdf

1 extension(s) and 0 alias(es) in our database

Below, you can find answers to the following questions:

  • What is the .pdf file?
  • Which program can create the .pdf file?
  • Where can you find a description of the .pdf format?
  • What can convert .pdf files to a different format?
  • Which MIME-type is associated with the .pdf extension?
Portable Document Format .pdf file icon

Portable Document Format

Portable Document Format (PDF) is a proprietary file format developed by Adobe Systems for representing two dimensional documents in a device independent and resolution independent format.
Category: Document files
Application: Adobe Acrobat Reader
Program name: -
Mime-type: application/pdf
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:
Adobe Illustrator Drawing
ClarisWorks Document
Data Interchange Format
Microsoft Word Document
Encapsulated PostScript Image
Envoy Document
Lotus Word Pro Document
Microsoft Word for Macintosh Document
Printer Command Language Document

Other types of files may also use the .pdf file extension. If you have helpful information about .pdf extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

PageVault/PageRecall File
LDAP Data Interchange Format File
Optima! 2.5 Document
Adobe Photoshop Proof Settings
ArcSoft PhotoStudio Image
Alzex Personal Finance Data
InkWriter/Note Taker Template
HPS Ancient Warfare Parameter Data File
Lizard Safeguard PDF Security Protected PDF

The .pdf filename extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

pdb (49), pdt (33), pd (30), prf (30), pcf (30), pfd (24), psf (24), df (21), ldf (20), pde (16), pvf (15), pef (14), pdg (14), dpf (12), pdc (11)

Can't open a .pdf file?

If you want to open a .pdf file on your computer, you just need to have the appropriate program installed. If the .pdf association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.pdf

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2003/2008/2012, Windows 7, Windows 8, Linux, FreeBSD, NetBSD, OpenBSD, Mac OS X, iOS, Android

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