How to open .OPF file extension?

If you cannot open a new file that has been saved in the .OPF format you need to download the appropriate software. The manufacturer of .OPF files is IDPF; .OPF files belong to the eBook Files category. After downloading the application from the list available on our website just run an unknown file, and as the default set the newly installed application supporting the .OPF files. Activities performed in the order described should solve the problems with all the files in the .OPF format.

• What is .OPF file?
• How to open .OPF file?
• What is .OPF file?