What is the BK3 file format?
A file with the .BK3 extension is a file known as Corel WordPerfect Document Backup. This format is associated with Corel Corporation.
The reliable way to open a .BK3 file is with software that recognises this exact format, rather than guessing from the file name. If you are not sure what created a file, our file identifier can read its first bytes and name the real format, even when the file has been renamed.
We are still gathering the list of programs that open .BK3 files. A fully verified, hand-written description of this format is being prepared; until then, the details on this page are drawn directly from our database.
Format details
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