LZMA Alone

File Format
Name	LZMA Alone
Ontology	Electronic File Formats Compression LZMA Alone
Extension(s)	.lzma
MIME Type(s)	application/x-lzma

LZMA_Alone is a compressed file format that uses LZMA compression. It may be more commonly known as simply LZMA or .lzma format, but note that it is a file format, and not quite the same thing as the raw LZMA compressed data format.

LZMA_Alone is considered to be deprecated, in favor of XZ. Other LZMA-based alternatives include 7z and Lzip.

Format

LZMA_Alone files have a 13-byte header.

Identification

There is no signature, and no reliable way to identify LZMA_Alone files just by looking at the header. That said, it is common for them to start with bytes 5D 00 00.

Specifications

• XZ Utils source → doc/lzma-file-format.txt

Software

• LZMA SDK
• XZ Utils:
  • xz (with appropriate options), lzma, unlzma, lzcat
  • lzmadec
  • lzmainfo
  • liblzma