.OPF File Extension
File Type 1FlipViewer FlipBook File
| Developer | E-Book Systems |
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| Category | Data Files |
| Format | XML
XMLThis file is saved in an XML format. You can view the XML structure and contents of the file in a text editor. |
What is an OPF 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.
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File Type 2Open Packaging Format File
| Developer | IDPF |
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| Category | eBook Files |
| Format | XML
XMLThis file is saved in an XML format. You can view the XML structure and contents of the file in a text editor. |
.OPF File Association 2
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.
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File Type 3FlipAlbum File
| Developer | E-Book Systems |
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| Category | Misc Files |
| Format | Binary
BinaryThis file is saved in a binary format, which requires a specific program to read its contents. |
.OPF File Association 3
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.
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