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HomeISO vs GZ
.iso
.gz

ISO vs GZ

Compare Disc Image and Gzip Compressed formats — understand the key differences and when to use each

Format Overview

ISO

Disc Image

Disc Image (.iso) is a archive file format.

.isoarchive

GZ

Gzip Compressed

Gzip Compressed (.gz) is a archive file format.

.gzarchive

ISO vs GZ: Feature Comparison

FeatureISOGZ
Full NameDisc ImageGzip Compressed
File Extension.iso.gz
Categoryarchivearchive
Free to Convert✓ Yes✓ Yes
Browser Support✓ All Browsers✓ All Browsers
Convert to Each Other✓ Yes✓ Yes

When to Use ISO vs GZ

Use ISO when you need:

  • •Files in Disc Image format for maximum compatibility
  • •Industry-standard archive format support
  • •Wide software and platform compatibility

Use GZ when you need:

  • •Files in Gzip Compressed format for specific workflows
  • •Optimized archive format features
  • •Modern format advantages and smaller file sizes

Convert Between Them

ISO GZGZ ISO
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Dimensione max: 2GB

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Learn More About These Formats

ISO Converter GZ Converter

Frequently Asked Questions

What is the difference between ISO and GZ?
ISO (Disc Image) and GZ (Gzip Compressed) are both archive file formats. ISO files use the .iso extension while GZ uses .gz. They differ in compression, quality, compatibility, and intended use cases.
Can I convert ISO to GZ for free?
Yes! Convert999 lets you convert ISO to GZ completely free, directly in your browser. No file upload to any server, no registration needed — your files stay private on your device.
Which is better, ISO or GZ?
It depends on your use case. ISO (Disc Image) may be better for certain workflows, while GZ (Gzip Compressed) excels in others. Consider factors like file size, quality, software compatibility, and your specific needs.
Is it safe to convert files on Convert999?
Absolutely. Convert999 processes all files 100% locally in your browser. Your files are never uploaded to any server, ensuring complete privacy and security.

ISO Converter

Convert from ISO

GZ Converter

Convert from GZ

File Tools

Compress, resize, merge

Convert to ISO

All sources → ISO

Convert to GZ

All sources → GZ

Format Statistics

Trends & data 2025

More Format Comparisons

JPGvsPNGPNGvsWEBPJPGvsWEBPSVGvsPNGHEICvsJPGBMPvsJPGTIFFvsJPGGIFvsPNG