A daily updated filename extension database!

PDF file extension

The table below provides useful information about the .pdf file extension. It answers questions such as:

  • What is the .pdf file?
  • What program do I need to open a .pdf file?
  • How can the .pdf file be opened, edited or printed?
  • How can I convert .pdf files to another format?

We hope you find this page helpful and a valuable resource!

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

✅ 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
Mime-type: application/pdf
Magic number: -
Magic string: -
Sample: -
PDF aliases:
PDF related links:
PDF 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.

🔄 .pdf converters

The following softwares are capable of converting .pdf files to other formats:

XnView, IrfanView, Calibre

For example, using the softwares above, a .pdf file can be converted into one of the following formats:

bmp, djvu, ecw, emf, exr, gif, ico, jls, jp2, jpc, jpg, jpm, pbm, pcx, pdb

🚫 The .pdf file extension is often given incorrectly!

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

pd, dpf, pdt, pff, df, pf, pdv, pdr, pde, pdc, pxf, pvf, odf, prf, pfd

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

FlexiSIGN 5 Plotter Document
Male MRI Image
Paradox Database
F-Secure Default Policy File
DOpus v9 Preferences Data
COMPRESS Drafter Data
ProWorx NXT Descfriptor Pointer File
InkWriter/Note Taker Template
HPS Ancient Warfare Parameter Data File
VersaPro PLC Compiled Block

🔴 Can't open a .pdf file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .pdf file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .pdf file extension, write to us!

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