.B1 File Extension
File TypeB1 Compressed Archive
This file is saved in a binary format, which requires a specific program to read its contents.
What is a B1 file?
Compressed archive created by B1 Free Archiver, a free file compression utility; based off of the .LZMA format and uses an openly published format; can be opened with B1 Free Archiver to extract the original set of files.