IBM BookManager backup index
File type: Backup file
A bki file extension identifies an IBM BookManager backup index file.
The file belongs to IBM BookManager and IBM Softcopy Reader for Microsoft Windows.
File type category:
Backup file
Date updated: October 26, 2026
Record marked as obsolete and not updated for a long time.
IBM BookManager and IBM Softcopy Reader use bki files to store a backup of an index created by the software. The index supports the programs' handling of BookManager content.
The format was developed by IBM for its BookManager software and related IBM Softcopy Reader. It is associated with the Microsoft Windows versions of these programs.
The bki format is obsolete and is no longer generally used by current software.
On Microsoft Windows, open the file with IBM BookManager or IBM Softcopy Reader, the programs associated with this format. A bki file is a backup index rather than a document intended for independent viewing, so the software may use it only with the related BookManager content.
The file stores a backup of an index rather than the BookManager document content. It is not intended to be converted into a standalone document format.
Software apps that recover bki files:
Microsoft Windows
BookManager
Software applications that handle other tasks involving bki files:
Microsoft Windows
BookManager
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