How to open Adobe's PDF (Portable Document Format) .pdf files
Have you had trouble opening the pdf file on your computer? What are pdf files? We explain what they are and recommend software that we know will open them.
What is pdf file?
The extension .pdf is primarily associated with Adobe's Portable Document Format, often abbreviated as PDF. Most software that allows you to create documents or projects also provides the option to save these files in PDF format. Adobe provides a free PDF viewer - Adobe Acrobat Reader that can be downloaded from their website.
Adobe's PDF (Portable Document Format) description
PDF stands for Portable Document Format, a format developed by Adobe Systems. It is used to present and exchange documents reliably, independent of software, hardware, or operating system. PDF files can contain not only text and images but also interactive buttons, hyperlinks, embedded fonts, video, and more. You can also encrypt and digitally sign your PDFs, add comments, and export PDFs to other formats, such as Word or Excel. It is widely used for its convenience and versatility.
Suggested software to open pdf file

Adobe Acrobat Reader
Free reader for viewing PDF files

Adobe Acrobat
A dedicated software for handling PDF documents

Adobe Acrobat Reader for Mac
Mac version of Adobe's free PDF viewer

Adobe Acrobat for Mac
Mac version of Adobe's PDF handling software
There are other PDF filename extensions with the same .pdf suffix
pdf - ArcView preferences definition data
Rarely, files with pdf file extension might also be found as preferences definition files for ArcView program.