TAR to TAR.LZMA (TLZMA) Converter
Convert your tar files to tar.lzma online & free
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tar.lzma
How to convert TAR to TAR.LZMA
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About formats
TAR (Tape Archive) is a Unix archive format originating in Version 7 Unix at AT&T Bell Labs in January 1979, originally designed for writing file backups to magnetic tape drives. Unlike ZIP or RAR, TAR is a pure archiving format that concatenates multiple files into a single stream without applying compression — each file is preceded by a 512-byte header block containing the filename, permissions, ownership, size, modification time, and checksum, followed by the file data padded to 512-byte boundaries. The format has evolved through several standards: the original V7 format, the POSIX.1-1988 ustar format (extending path lengths and adding support for more file types), and the POSIX.1-2001 pax format supporting extended attributes, arbitrary-length paths, and large file sizes. TAR is almost always paired with a compression tool — gzip (.tar.gz/.tgz), bzip2 (.tar.bz2/.tbz2), xz (.tar.xz), or others — producing a two-layer structure where compression operates on the entire stream for maximum efficiency. One advantage is exceptional Unix metadata fidelity — TAR preserves permissions, ownership, symbolic links, hard links, device files, and extended attributes with greater precision than most competing formats. Universal availability is another core strength: tar is a POSIX-mandated utility present on every Unix-like system, and tools on Windows and macOS handle TAR files natively. TAR remains the standard distribution format for source code, Linux filesystem images, container layers, and system backups.
TAR.LZMA is a compound archive format combining TAR archiving with the LZMA (Lempel-Ziv-Markov chain Algorithm) compression method developed by Igor Pavlov for the 7-Zip project around 1998. The TAR layer concatenates files with Unix metadata into a single stream, and the LZMA algorithm compresses it using a sophisticated combination of LZ77 dictionary matching with large dictionaries (up to 4 GB), Markov chain-based probability modeling, and range coding. LZMA was the predecessor to the LZMA2 algorithm used in XZ and 7Z formats. Compression ratios significantly exceed gzip and are comparable to bzip2 while offering substantially faster decompression. One advantage is the high compression ratio with fast extraction — LZMA decompresses at speeds close to gzip while achieving compression densities near bzip2 or better, making it efficient for distribution archives that are compressed once and extracted many times. The format is supported by tar's --lzma flag and by 7-Zip across all platforms. While TAR.LZMA has been largely succeeded by TAR.XZ (which uses LZMA2 in a more robust container with integrity checks), existing TAR.LZMA archives remain encountered in software distributions and backup systems that adopted the format before XZ became widely available.