7Z vs LZMA — Differences, File Size & When to Use Each

7Z vs LZMA

Ein detaillierter Vergleich von 7-Zip Archive und LZMA Compressed — Dateigröße, Qualität, Kompatibilität und welches je nach Workflow zu wählen ist.

7Z → LZMA umwandeln LZMA → 7Z umwandeln

7-Zip Archive

Archives & Compressed

7z uses the LZMA2 compression algorithm to achieve significantly better compression ratios than ZIP. It is open-source and supports strong AES-256 encryption.

Über 7Z-Dateien

LZMA

LZMA Compressed

Archives & Compressed

LZMA (Lempel-Ziv-Markov chain Algorithm) is a high-ratio compression algorithm developed by Igor Pavlov for the 7-Zip archiver. It achieves significantly better compression than gzip or bzip2, especially on text and binary data, at the cost of higher memory usage.

Über LZMA-Dateien

Vorteilsvergleich

7Z Vorteile

Outstanding compression ratio — typically 20–50% smaller than ZIP, 10–30% smaller than RAR.
Completely free and open source.
AES-256 encryption of both content and filenames.
Supports enormous archives (16 exabytes).
Multi-threaded compression on modern CPUs.

LZMA Vorteile

Highest-ratio mainstream compression (beats gzip by 30%).
Public domain SDK — royalty-free.
Mature since 1998 with no breaking changes.
Core of 7z, xz, .tar.xz workflows.
Multi-threaded LZMA2 scales across CPU cores.

Einschränkungen

7Z Einschränkungen

Not natively supported on Windows before Windows 11 23H2 or macOS — requires a separate tool.
Slower compression than ZIP (though decompression is fast).
No built-in recovery records like RAR.
Less ubiquitous in email and casual sharing than ZIP.

LZMA Einschränkungen

Slow compression at highest settings.
Memory-hungry — 1 GB+ for extreme compression levels.
Zstandard matches its ratios at less memory cost.
Raw .lzma files are rare — usually wrapped in .7z, .xz, or .tar.xz.

Technische Spezifikationen

Spezifikation	7Z	LZMA
MIME type	application/x-7z-compressed	application/x-lzma
Compression	LZMA, LZMA2, PPMd, Bzip2, DEFLATE	—
Max file size	16 EB (exabytes)	—
Encryption	AES-256 (content + filenames)	—
License	LGPL	—
Extensions	—	.lzma, .lz
Algorithm	—	Lempel-Ziv-Markov chain + range coding
Public domain SDK	—	Yes (since 2001)
Variants	—	LZMA (original), LZMA2 (multi-threaded, used in xz)

Typische Dateigrößen

7Z

Source code archive ~50% smaller than ZIP
Linux distro installer 2–10 GB
Virtual machine disk image 5–40 GB

LZMA

Text/source archive 15-25% of original
Linux kernel source (.tar.xz = LZMA2) ~125 MB
Windows system backup (.lzma) 25-40% of original

Bereit zum Umwandeln?

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Häufig gestellte Fragen

7Z is an open-source archive format from the 7-Zip project. It uses the LZMA2 compression algorithm which achieves significantly better compression ratios than ZIP or RAR, making it ideal for archiving large files and datasets.

7Z is an open-source archive formato de the 7-Zip project. It uses the LZMA2 compressão algorithm which achieves significantly better compressão ratios than ZIP ou RAR, making it ideal para archiving large arquivos e datasets.

7Z files open with 7-Zip (free, Windows), PeaZip (cross-platform, free), Keka (macOS), and The Unarchiver (macOS). Windows does not natively support 7Z, so third-party software is required.

7Z arquivos abrir com 7-Zip (free, Windows), PeaZip (cross-platform, grátis), Keka (macOS), e The Unarchiver (macOS). Windows does not natively support 7Z, so third-party software is required.

Use 7Z when maximum compression is the priority, such as software distribution and backups. Use ZIP when the recipient needs to open the file without installing extra software, since ZIP is natively supported everywhere.

Use 7Z when máximo compressão is the priority, como software distribution e backups. usar ZIP when the recipient needs to abrir o arquivo sem installing extra software, since ZIP is natively suportado everywhere.