GZ File Creator
Compression · Free Online Tool
Package a file into a single .gz archive.
Click "Create .gz" to generate...Real .gz Files
Produces RFC-1952 gzip files that gunzip, 7-Zip, and macOS Archive Utility all open.
Upload or Paste
Upload any text-based file or paste content directly to compress it.
Custom Filename
Name your .gz file — defaults to output.txt.gz.
How to Use GZ File Creator
- 1Enter or paste the text you want to compress.
- 2Select the compression algorithm (gzip, deflate, or brotli).
- 3Click compress to reduce the data size.
- 4Copy or download the compressed output.
Features
- ✓100% free — no signup, no subscription, no ads
- ✓Runs entirely in your browser — data never leaves your device
- ✓Fast and lightweight — instant results
- ✓Cross-platform — works on desktop, tablet, and mobile
Frequently Asked Questions
What compression algorithms are supported?
We support gzip, deflate, and brotli compression algorithms for text data.
Is there a file size limit?
Since tools run in your browser, the limit depends on your device memory. Most tools handle several megabytes without issues.
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LZ-String Compressor
lz-string compress/decompress for short text in URLs/LocalStorage.
LZUTF-8 Compressor
LZUTF-8 compress/decompress optimized for UTF-8 text.
Learn the concept
Learn the concept
Understand the programming ideas behind this tool.