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

7Z vs TAR

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

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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

TAR

TAR Archive

Archives & Compressed

TAR is a Unix archive format that bundles files together without compression. It is commonly combined with gzip or bzip2 for compressed archives and is the standard for Linux software distribution.

Über TAR-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.

TAR Vorteile

Streamable — you can tar files straight to a network pipe, no seek needed.
Preserves Unix permissions, ownership, symbolic links, and timestamps.
Universally supported on Unix-like systems.
Simple format — the GNU tar source has been stable for decades.
No compression overhead — pair with gzip/xz/zstd as needed.

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.

TAR Einschränkungen

No built-in compression — plain .tar files are the same size as their contents.
No random access — reading one file requires scanning from the start.
Windows tooling is second-class — PowerShell only added native tar in 2018.
Multiple incompatible header variants (v7, ustar, POSIX, GNU) over the years.

Technische Spezifikationen

Spezifikation	7Z	TAR
MIME type	application/x-7z-compressed	application/x-tar
Compression	LZMA, LZMA2, PPMd, Bzip2, DEFLATE	—
Max file size	16 EB (exabytes)	—
Encryption	AES-256 (content + filenames)	—
License	LGPL	—
Extension	—	.tar
Block size	—	512 bytes (traditional)
Header variants	—	v7, ustar, POSIX.1-2001 (pax), GNU
Max filename length	—	100 bytes (v7); unlimited (pax extended headers)

Typische Dateigrößen

7Z

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

TAR

1 MB of source files (uncompressed .tar) ~1 MB
Same files as .tar.gz 150-400 KB
Linux kernel source (.tar.xz) ~120 MB

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.