Compress GZ files online free. Reduce .gz archive size with best Gzip compression level. Fast & lossless.
Losslessly shrink PNG files.
Compression Level
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Drop a png compressor file here or click to browse
.png
Compress files to GZ (Gzip) format online free. Choose level 1-9. Fast, lossless, no registration.
Gzip (GZ) is the standard compression tool on Linux and Unix systems. Our GZ Compressor allows you to compress any file to the .gz format directly in your browser – no command line needed.
We apply the Deflate algorithm with a sliding window (32KB). You can choose compression level from 1 (fastest) to 9 (best compression). Higher levels take longer but save more space – ideal for text, logs, and source code.
| Level | Speed | Ratio (Text) | Use Case |
|---|---|---|---|
| 1 | Very Fast | ~40% | Real-time compression |
| 6 | Fast | ~60% | Default (balanced) |
| 9 | Slow | ~75% | Archival, backups |
gzip -9 input.txt # creates input.txt.gz
Web developers compressing static assets, sysadmins preparing logs for transfer, and anyone needing quick gzip compression without terminal.
See questions above. In short – free, fast, and safe.
Everything you need to know about this tool