Having problems opening a PDF_ file?

We have programs that can open or convert your PDF_ files.

Opening PDF_ files

Did your computer fail to open a PDF file? We explain what PDF files are and recommend software that we know can open or convert your PDF_ files.

What is a PDF_ file?

PDF stands for Portable Document Format. Files that contain the .pdf file extension are older Adobe Acrobat files. The newer .pdf extension has replaced the older .pdf version.

The .pdf_ file extension used to be used when creating PDF documents on older Apple computers. PDF files allow documents to be transmitted over the Internet and viewed across multiple platforms, regardless of the application that the original document was created in.

The newer PDF documents that are created with recent versions of the software and with the versions created for Windows computers are saved with the .pdf file suffix rather than the .pdf_ file extension.

Try a universal file viewer

Try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and most likely yours too. Download Free File Viewer here.

About File Extension PDF_

File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.

If you have additional information about the PDF_ file format or software that uses files with the PDF_ suffix, please do get in touch - we would love hearing from you.