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7-Zip

Outil de compression/décompression puissant et gratuit.

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7-Zip: powerful, free compression

7-Zip is the go-to tool for compressing and extracting files, with a compression ratio higher than WinRAR or WinZip.

Why 7-Zip?

  • 100% free and open-source
  • Best compression ratio (.7z format)
  • Support for many formats (ZIP, RAR, TAR, ISO, etc.)
  • Windows context-menu integration
  • AES-256 encryption to protect your archives

How to use

  1. Download it from 7-zip.org
  2. Install 7-Zip
  3. Right-click a file/folder → 7-Zip → Add to archive
  4. Choose the format (.7z for best compression, .zip for compatibility)
  5. Set a password if needed, then click OK

Tips

  • .7z format: maximum compression, ideal for archiving
  • .zip format: universal compatibility
  • Use "Extract to [folder]" to avoid dumping files loose