Sobre os arquivos 7Z
Arquivo 7-Zip
7Z é o formato de arquivo compactado open source desenvolvido por Igor Pavlov para o 7-Zip. Usa o algoritmo LZMA2 que produz arquivos significativamente menores que ZIP (15-50% mais compressão típicamente). Suporta criptografia AES-256 forte e arquivos enormes. Desvantagem: requer instalar 7-Zip ou similar para abrir — não é nativo no Windows.
Família
Archives & Compressed
Extensão
.7z
Tipo MIME
application/x-7z-compressed
Pode ser usado como
COMO NASCEU O
FORMATO 7Z.
7z is the open-source archive format created by Russian programmer Igor Pavlov in 1999, shipped as part of the 7-Zip utility. The format's headline feature is LZMA compression — a dictionary-based algorithm that routinely outperforms ZIP and RAR by 20–50% on typical files. Its open license and technical superiority made it the archival format of choice for Linux distributions, software installers, and anyone optimizing for size over compatibility.
The 7-Zip utility itself became a Windows staple — free, open source, no nag screen, no bundled adware — and the Linux port (p7zip) is standard in every distribution. The format is licensed under the permissive LGPL and has no royalty or usage restrictions.
CURIOSIDADES E
FATOS INTERESSANTES.
LZMA2 (7z's default codec) was later adopted by the xz utility — the compression ratio is legendary.
7z archives can hit 10× better compression than ZIP on text-heavy content.
7-Zip is one of the most-downloaded Windows utilities ever — hundreds of millions of installs.
The format supports AES-256 encryption on filenames AND contents — a feature ZIP still lacks in practice.
7z's author, Igor Pavlov, has maintained the project almost single-handedly since 1999.
VANTAGENS E
LIMITAÇÕES.
Vantagens
- 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.
Limitações
- 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.
Tamanhos típicos de arquivo
Source code archive
~50% smaller than ZIP
Linux distro installer
2–10 GB
Virtual machine disk image
5–40 GB
Especificações técnicas
- MIME type
- application/x-7z-compressed
- Compression
- LZMA, LZMA2, PPMd, Bzip2, DEFLATE
- Max file size
- 16 EB (exabytes)
- Encryption
- AES-256 (content + filenames)
- License
- LGPL
CONVERTER A PARTIR DE
7Z
Casos de uso comuns
Maximum compression, large file archives, encrypted storage.
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Perguntas frequentes sobre 7Z
Perguntas frequentes
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 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 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.