BlakHole

File Format
Name	BlakHole
Ontology	Electronic File Formats Archiving BlakHole
Extension(s)	.bh

BlakHole (or BH) is a fairly obscure compressed archive format supported by a handful of multi-format archiving programs. It's a proprietary format from the ZipTV Compression Components -- a library for Delphi.

A self-extracting "BH SFX" format also exists.

Identification

BH files start with ASCII "BH".

BH files are observed to start with the byte pattern 'B' 'H' 0x05 0x07 ?? 0x00 0x25, but it's unclear how reliable this is.

Programs supporting this format

• PowerArchiver
• LS Archiver, by Linos Software: archived website · CNET Download
• IZArc
• UltimateZip

Sample files

• test.bh

Links

• ZipTV Archive Filter (archived)
• FileInfo.com page on BH