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.PDF File Extension

File TypePortable Document Format File

DeveloperAdobe Systems
4.0 (1148 Votes) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryPage Layout Files


This file is saved in a binary format, which requires a specific program to read its contents.

What is a PDF file?

A PDF file is a multi-platform document created by Adobe Acrobat or another PDF application. The PDF format is commonly used for saving documents and publications in a standard format that can be viewed on multiple platforms. In many cases, PDF files are created from existing documents instead of from scratch.

More Information

PDF files can be edited with Adobe Acrobat, a commercial software program. The format can be opened and viewed using the free Adobe Reader application or the Adobe Reader plug-in, which is available for web browsers and other programs. Search engines such as Google and Bing index PDF documents, so the Adobe Reader plug-in may be used to display PDF files within the browser window. Some browsers, such as Google Chrome, provide native support for PDF viewing without the Adobe Reader plug-in. Firefox can view PDF files with the PDF.js extension.

PDF files may contain text, images, forms, annotations, outlines, and other data. They preserve fonts and formatting electronically across multiple platforms and appear the same on the screen as when printed on paper.

View the PDF definition for more information.

NOTE: OS X users can create a PDF from a document using the Print dialog box. First select "Print..." from the application's File menu, then choose "Save as PDF" from the PDF drop-down menu in the lower-left corner of the window.

Open and view .PDF files with File Viewer Plus.
Programs that open PDF files
File Viewer Plus
Adobe Reader
Adobe Acrobat DC
Nitro Pro 10
Foxit Reader
Corel WordPerfect X8
Nuance Power PDF Standard
Icecream PDF Converter
Web browser
with Adobe Reader plug-in
Apple Preview
Adobe Reader
Adobe Acrobat DC
Apple Pages
Nuance PDF Converter for Mac 4
Solid PDF to Word
Web browser
with Adobe Reader plug-in
KDE Okular
Web browser
with Adobe Reader plug-in
Google Drive
Microsoft OneDrive
Apple iBooks
Apple Pages
Adobe Acrobat Reader
Infraware Polaris Office
Good.iWare GoodReader
MobiSystems OfficeSuite Pro
Google Drive
File Viewer for Android
Adobe Reader
Google Play Books
Kingsoft WPS Office for Android
Google Drive
Windows Phone
Adobe Reader
Updated 7/11/2016

.PDF Extension Information

This page contains information about the file extension PDF and its known file associations. Our goal is to help you understand what a *.pdf file is and how to open it.

The Portable Document Format file type, file format description, and programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and do not publish any information we have not verified.

If you would like to suggest any additions or updates to this page, please let us know.