What is XZ compression?

XZ is a compression format using the LZMA2 algorithm. It typically achieves the best compression ratios among common formats, making it ideal for distributing large files.

XZ vs GZIP vs BZ2 — which should I use?

XZ achieves the best compression but is the slowest. GZIP is the fastest but compresses less. BZ2 is in between. Choose XZ for maximum compression, GZIP for speed.

How much compression can I expect?

Text files can compress by 70-95% with XZ, typically 5-15% better than BZ2 and 15-30% better than GZIP.

Is this XZ compressor free?

Yes, completely free with no limits. Compress as many files as you need.

Compress XZ

Compress files to XZ format with high LZMA2 compression ratio.

or drop files here

Maximum file size: 500MB per file

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Learn more about this tool

About XZ Compression

XZ is a modern compression format using the LZMA2 algorithm, offering some of the best compression ratios available. It is widely used in Linux package distribution (`.tar.xz`), software source archives, and large data transfers. Our tool uses WebAssembly for efficient browser-based compression. Whether you are optimizing assets for a US-hosted site on AWS, Cloudflare, or Vercel, trimming email attachments for Gmail and Outlook, or submitting documents to federal portals, this tool keeps your files lean and your workflow fast — all without uploading anything to a server.