There are 4 other file types using
the OPF file extension!

opf file icon.opf - FlipAlbum album file

opf file icon.opf - KEPServerEX project configuration file

opf file icon.opf - Obsidium project file

opf file icon.opf - VisualOMP project file

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OPF file extension - Open Packaging Format

What is opf file? How to open opf files?

File type specification:

E-book file type icon E-book file type

The opf file extension is related to Open packaging Format. OPF is an XML-based e-book format created by E-Book Systems.

Open Packaging Format (OPF) is one third of a triumvirate of modular specifications that make up the EPUB publication format.

EPUB enables the creation and transport of reflowable digital books and other types of content as single-file digital publications that are interoperable between disparate EPUB-compliant reading devices and applications.

EPUB encompasses a content markup standard (Open Publication Structure – OPS), a container standard (Open Container Format – OCF), and OPF packaging standard.

The default software associated to opf file type:

Calibre icon

Calibre  Microsoft Windows software

Company or developer:
  Kovid Goyal

Calibre is a very popular, open source digital publication library management program for Microsoft Windows developed by e-book users for e-book users. It supports many common, and few uncommon e-book formats, like azw, cbc, cbr, cbz, epub, htmlz, lit etc.

Help how to open OPF files:

Okular ebook viewer should be able to view *.opf files.

How to convert file with extension OPF:

Calibre is able to export *.opf files to other formats.

Find conversions from opf file:

opf to 89y

opf to 9xy

opf to epub

opf to jpg

opf to mobi

opf to pdf

opf to v2y

Find converter to opf file type:

doc to opf

Related links:

Open Packaging Format (OPF)

List of software applications associated to the .opf file extension

Recommended software programs are sorted by OS platform (Windows, Mac OS X etc.) and possible program actions
that can be done with the file
: like open opf file, edit opf file, convert opf file, view opf file, play opf file etc. (if exist software for corresponding action in File-Extensions.org's database).

Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting of the opf files.

  • Open opf file
  • Save opf file
  • Edit opf file
  • View opf file
  • Create opf file
  • Import opf file
  • Others opf file

Software that open opf file - Open Packaging Format

Click on the link to get more information about listed programs for open opf file action.

Apple macOS / Mac OS X:

Linux/Unix:

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