There are 3 file types use the .OPF file extension:
1. FlipAlbum File
Digital photo album created by FlipAlbum, a program that organizes images into picture albums; stores the album structure, appearance settings, and references to image files; can be viewed with 3D page-flipping effects.
FlipAlbum photo albums are commonly used for sharing pictures with friends and family. Professional photographers also used them for arranging pictures for clients.
OPF files are saved in E-Book Systems' proprietary FlipAlbum XML format, and should not be confused with the Open Packaging Format (OPF) standard.
NOTE: FlipAlbum has been discontinued and is no longer available for download.
|E-Book Systems FlipAlbum|
Updated: July 7, 2016
2. Open Packaging Format File
File formatted according to the Open Packaging Format (OPF) standard, which is part of the EPUB eBook specification; stores eBook information such as the title, language, book ID, creator, reading order, and display formatting; used as part of an .EPUB archive to specify eBook metadata.
OPF files are saved in an XML format. The Open Packaging Format standard also requires a second .NCX XML file that stores the table of contents for the EPUB eBook.
Updated: April 9, 2010
3. FlipViewer FlipBook File
FlipBook, such as a digital magazine or other publication that can be read with FlipViewer; saved in the OEB Package Format (OPF) which is formatted in XML; includes metadata that describes the content and a list of pages, images, and text referenced by the publication.
Because OPF files are formatted in XML, they can be created and edited with a basic text editor.
Updated: September 11, 2018