Text Compressor
Compression · Free Online Tool
Universal text compression with auto-best-algorithm selection.
Click "Auto-Compress" to run...Auto-Selection
Tries every supported codec and keeps the smallest result — no guessing.
Round-Trip Safe
Output embeds the chosen codec name so the matching decompressor can decode it.
Live Ratio
See input/output byte counts, ratio, and which codec won.
How to Use Text Compressor
- 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.
Related Tools
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Zlib Compressor
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Raw Deflate Compressor
Raw Deflate stream without zlib header compress/decompress.
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.