The File Extensions Database

.PDF File Extension

  • Developer by: Adobe Systems
  • Category: Page Layout Files
  • Format: Binary

What is an .PDF file?

.PDF is Portable Document Format 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.

PDF file open in Adobe Acrobat Reader DC

PDF files can be edited with Adobe Acrobat, a commercial software program. The format can be opened and viewed using the free Adobe Acrobat Reader application or the Adobe Acrobat 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.

Programs that open Portable Document Format File
File Viewer Plus
Adobe Acrobat DC
Adobe Acrobat Reader DC
Microsoft Word 2016
Nitro Pro 10
Foxit Reader
Corel WordPerfect X9
Nuance Power PDF Standard
Icecream PDF Converter
Web browser
Apple Preview
Adobe Acrobat DC
Adobe Acrobat Reader DC
Apple Pages
Microsoft Word 2016
Solid PDF to Word
Smile PDFpenPro
Web browser
KDE Okular
Web browser
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
Google Drive
Microsoft OneDrive

How to solve problems with PDF files

  • Associate the PDF file extension with the correct application. On :
    Windows: Right click on any PDF file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.PDF files". Mac: Right click (or Ctrl-click) the PDF file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .PDF is Portable Document Format File. Because only the current version supports the latest PDF file format. Search, therefore, e.g. on the Adobe Systems manufacturer website after an available .PDF is Portable Document Format File update.
  • To make sure that your PDF file is not corrupted or virus-infected, get the file again and scan it with antivirus software.