The File Extensions Database


.OPF File Extension

  • Developer by: E-Book Systems
  • Category: Misc Files
  • Format: Binary

What is an .OPF file?

.OPF is 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.

File Type 2 FlipViewer FlipBook File
Developer by: E-Book Systems Category: Data Files Format: XML

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.

File Type 3 Open Packaging Format File
Developer by: IDPF Category: eBook Files Format: XML

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.

Programs that open Open Packaging Format File
Windows
Adobe Digital Editions
Adobe InDesign CC 2019
Calibre
KDE Okular
Geometer Plus FBReader
Mac
Adobe Digital Editions
Adobe InDesign CC 2019
Calibre
KDE Okular
Geometer Plus FBReader
Linux
Calibre
KDE Okular
Geometer Plus FBReader

How to solve problems with OPF files

  • Associate the OPF file extension with the correct application. On :
    Windows: Right click on any OPF file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.OPF files". Mac: Right click (or Ctrl-click) the OPF file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .OPF is FlipAlbum File. Because only the current version supports the latest OPF file format. Search, therefore, e.g. on the E-Book Systems manufacturer website after an available .OPF is FlipAlbum File update.
  • To make sure that your OPF file is not corrupted or virus-infected, get the file again and scan it with antivirus software.