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Open Packaging Format
File type: E-book file
Files with opf extension are ebooks saved in the XML-based, Open Packaging Format.
Found 5 different file type records with the same opf filename suffix.
File type category:
E-book file
Date updated: January 3, 2025
File extension opf 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.
Okular e-book viewer should be able to view .opf files.
Calibre is able to export .opf files to other formats.
Software applications that can open opf files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
Multiplatform
Software applications that can edit opf files:
Microsoft Windows
Mobipocket eBook Creator
Software capable of saving opf files:
Microsoft Windows
Mobipocket eBook Creator
Programs for viewing opf files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
Software apps that create opf files:
Microsoft Windows
Mobipocket eBook Creator
Software apps that import opf files:
Microsoft Windows
Software applications that handle other tasks involving opf files:
Microsoft Windows
Mobipocket eBook Creator
File type category:
Various data file
Date updated: August 16, 2018
Record marked as obsolete and not updated for a long time.
The opf file extension is related to FlipAlbum, a software program for organizing and sharing of digital photos, by E-book Systems.
The opf file contains album saved in the program.
You can work with these OPF albums in FlipAlbum program.
Probably cannot be converted to other formats.
Software applications that handle other tasks involving opf files:
Microsoft Windows
FlipAlbum
File type category:
Configuration file
Date updated: April 3, 2019
The opf file extension is also associated with the KEPServerEX, a tool for connecting, managing, monitoring, and controlling diverse automation devices and applications.
This type of .opf file stores configuration of KEPServerEX project.
When placed in proper folder, this files will be loaded with the project.
Configuration files are usually not meant to be converted to anything.
Software apps that manage or store settings in opf files:
Multiplatform
File type category:
Various data file
Date updated: July 30, 2019
The opf file extension is also used for projects files in the Obsidium program.
Obsidium is software protection and licensing system. These files are meant to save work in progress.
You can open and continue to work with these projects in Obsidium.
Probably can be exported to other formats.
Software applications that can open opf files:
Microsoft Windows
Software applications that can edit opf files:
Microsoft Windows
Software capable of saving opf files:
Microsoft Windows
Software apps that create opf files:
Microsoft Windows
Software applications that handle other tasks involving opf files:
Microsoft Windows
File type category:
Various data file
Date updated: July 22, 2019
Record marked as obsolete and not updated for a long time.
The opf file extension is associated with the VisualOMP, a software developed by DNA Software, Inc.
The opf file contains project created VisualOMP.
The VisualOMP seems to be obsolete product without any support from the developer.
Use VisualOMP to work with *.opf files.
Probably can be exported to other formats.
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