Max File Size, Number of Files, Line Length (V3, V4)
BC version 3 or 4
Beyond Compare 64-bit: The number of files will scale with memory available.
Beyond Compare 32-bit on 64-bit Windows: 5 million files on each side.
32-bit Windows: 2.5 million files on each side.
20 million files each side, Windows: 7.5 GB memory.
1 million files each side, Linux: 1 GB memory.
1 million files each side, macOS: 600 MB memory.
BC 3.1 and newer support Zip64 for files over 4 GB in size. Versions prior to 3.1 are limited to 65,535 files, with no file larger than 2 GB, and a maximum Zip file size of 2 GB.
Tar archives over 4 GB in size are supported. The maximum size for individual files within a .tar archive is 2 GB.
Filename filters are limited to a maximum of 65,535 characters in the Folder Compare.
The characters per line limit is 65,536 and is not configurable.
The max file size supported is 500 MB.
The default characters per line limit is 4096, configurable limit is 65,536 characters.
The max file size supported is 700 MB.