An opf file extension is related to Open Packaging Format, an XML-based format used to store e-books.

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

empty icon.opf - FlipAlbum album data

empty icon.opf - KEPServerEX project configuration

empty icon.opf - Obsidium project

empty icon.opf - VisualOMP project

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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 open opf file:

Calibre icon

Calibre  Microsoft Windows software

Company or developer:
Kovid Goyal

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:

Okular e-book viewer should be able to view *.opf files.

How to convert:

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

pdf 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, macOS, Linux, iOS, Android 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's database).

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 opf files.

Software that open opf file - Open Packaging Format

Programs supporting the exension opf on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open opf file action.

Apple macOS / Mac OS X:


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