Open OPF files

  • Full name
    Open Packaging Format
  • Developer
    IDPF
  • Popularity
Have you encountered a problem with a OPF file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a OPF file here. In the further part of this page we have added a list of programs that should open your OPF file. It is enough you choose a proper application for your operating system, download and install it.

What is OPF file?

OPF files are XML-based files in the Open Packaging Format Standard. The OPF standard is part of the EPUB specification and stores metadata such as title, language, categories and author of an ebook. In addition, images and the navigation structure are referenced in an OPF file.

More info

An EPUB publication usually contains a file called Content.Opf and an associated toc.Ncx file with the table of contents. The actual content pages are html files without which an OPF file can not be meaningfully used.

Programs which can open a OPF file

How to open file with OPF extension?

In order to open a file with OPF extension one of the following programs must be installed on user’s system. If a problem with opening OPF file occurred, it is highly possible that none of the listed programs is present on user’s system. Even if one or more said programs are installed, there may be issues related with given programs. In order to solve a problem with OPF files, follow the instructions below.
1
Install Adobe Digital Editions or other program from the list

Most often resolving problems with opening OPF files is very simple. Just install an appropriate program that supports such files. All of the listed programs support OPF files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of OPF files or offer file conversion options, but may not be capable of editing such files.

Set Adobe Digital Editions as the default program for opening OPF files

It is possible that although a compatible program has been installed on user’s system, it is not used by the system to open it. This may happen because no default application was associated with this type of files. To associate OPF files with given application, select "Open with" from drop-down menu (accessed by right-clicking on the file). Then select from the list the program or application you want to be used to open this type of file. If the Adobe Digital Editions applications is not on the list, select "Browse" option in order to manually locate the directory where Adobe Digital Editions has been installed.

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3
Check the section that lists most common problems with OPF files

Sometimes problems with opening OPF files may not lie with the application itself, but can arise due to other causes, such as:

  • File data is corrupted
  • OPF files has been not been completely download from the internet (only a part of the data has been downloaded)
  • Currently used user account hasn’t been granted necessary privileges to open OPF files (should that be the case, please contact your system administrator or IT specialist)
  • OPF file was being copied from a corrupted storage device and is incomplete or data is corrupted. (Copying files from unknown or untrusted sources should be conducted with great care as such files may contain malicious software, which can damage your system)

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