What is an OBK file?
An .OBK file is a data container used by several different software programs. Often, it is a project backup file created by pCon.planner, a space planning application by EasternGraphics. It can also be a phone backup file created by Oxygen Phone Manager, an electronic book database used by GoldenDict and OBook, or a chess opening book file for ChessBase. Additionally, .OBK is used as a generic Backup File by O&O Software and for OrangeCD backups by Codium Labs. Because the extension has multiple possible meanings, viewer.online/obk analyzes .OBK files to identify their exact format and creator software.
How to open OBK files?
The correct method to open an .OBK file depends on the software that created it. For example, pCon.planner project backups are standard ZIP archives. You can rename the extension from .OBK to .ZIP and extract the contents using standard tools. If the file is an OBook e-book, it uses the SQL format, specifically an SQLite database, and can be inspected with database tools. For older mobile devices, Oxygen Phone Manager extracts and creates CAP formatted backups. viewer.online/obk shows which programs can open the file and usually previews it.
Best practices and troubleshooting
If your computer does not recognize the .OBK file, do not force it open in a basic text editor. Large binary files and databases will display scrambled text. Instead, identify the source program. If it comes from a space planning project, use pCon.planner. If you suspect it is an older system backup, it might belong to tools from O&O Software.
Software and tools
Depending on the internal format, you can use archiving tools for ZIP variations, or SQLite browsers for database variations. GoldenDict can manage dictionary databases, while ChessBase manages chess opening books.
Summary
Because .OBK files use the known ZIP format, viewer.online/obk can safely open and display them online, eliminating compatibility problems. If the format differs, the viewer will identify the correct type and suggest the right software.