What is a .LZMA file?
LZMA is a high-ratio compression format, the algorithm behind 7-Zip and XZ. Analyser decompresses the legacy .lzma stream in the browser so you can open the file inside.
- Did you know
- LZMA was developed by Igor Pavlov for 7-Zip in the late 1990s.
- LZMA pairs an LZ77-style dictionary with a range coder and a Markov-chain model, allowing a dictionary as large as four gigabytes.
- Its context-specific bit modelling is what lets LZMA beat older schemes like bzip2 on compression ratio while decoding quickly.
- What Analyser shows you
- Browse the file tree and compression details of archives without extracting them: ZIP in pure JavaScript, and RAR, 7z, TAR and compressed tarballs (.tar.gz / .tgz, .tar.xz, .tar.zst, .tar.bz2) through a bundled libarchive engine - click any file inside to analyse it. A single compressed stream (.gz, .xz, .zst, .lz4, .lzma, .Z) is decompressed so the file within can be opened; bare .bz2 streams are identified only.
- Open a .LZMA file
- Drag a .LZMA file onto the Analyser home page (or tap to pick one). It opens entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.