Open PDF-1 File
PDF-1 files are PDF files that have been renamed.
PDF-1 files are saved in PDF format, and are generally used to save documents and publications in a standard format that can be viewed on multiple platforms.
PDF-1 files are generally renamed to indicate that it is the first or second PDF in a series of PDF files.
Operating systems do not access the content of PDF-1 files to open them properly, in turn, they detect the file extension and look for an application that can display them, if installed.
PDF-1 files can be opened by renaming, if we need to rename a PDF file as PDF-1 file after opening the file, it just converts PDF file extension to .Pdf-1.
The programs to open PDF-1 files, once the extension has been changed, are: