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Questions fréquemment posées
Yes. You can convert up to 5 files per day without signup, or 20 per day with a free account — no watermark required. Pro users get 100 conversions per day and larger file sizes.
Most files convert in under 30 seconds. Larger files may take 1-3 minutes. Processing runs on our servers, so your device stays fast.
Our converter uses optimized settings to preserve quality. Default settings prioritize quality over file size. You can adjust settings for more control.
Free users can convert files up to 500MB. Pro users can convert files up to 2GB with priority processing.
Yes. Our converter is browser-based and works on any device — iPhone, Android, tablet, or desktop. No app or software installation needed.
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Upload your .Z file by dragging it into the upload area or clicking to browse.
2
Choose your output settings. The default settings work great for most files.
3
Click Convert and download your .zip file when it's ready.
Qu'est-ce que le format Z ?
Z is the classic Unix compress format using the LZW (Lempel-Ziv-Welch) algorithm. A historical compression format from the early Unix era, it has been largely superseded by gzip and bzip2 but remains relevant for legacy system compatibility.
Détails du format
Nom complet
Unix Compress File
Extension
.Z
Caractéristiques clés
Unix legacy
LZW algorithm
Historical format
ncompress
Qu'est-ce que le format ZIP ?
ZIP is the most widely used archive format, supported natively by Windows, macOS, and Linux. It compresses files and folders into a single portable archive.