LZ4

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File Format
Name LZ4
Ontology
Extension(s) .lz4
Released 2011

LZ4 is a lossless data compression algorithm and compressed data format. It is designed to support very fast compression.

Identification

When used as a file format, LZ4 files begin with signature bytes 04 22 4d 18.

There is also a legacy format, whose signature is 02 21 4c 18.

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