LZMA Compressor
Compression · Free Online Tool
LZMA/LZMA2 high-ratio compress and decompress.
CompressionStream. This tool falls back to gzip and is marked "LZMA stand-in". For real .lzma bytes, ship a WASM build of lzma-native or xz.Click "Compress" to run...High Ratio
LZMA typically beats deflate on large, repetitive inputs.
WASM Ready
Drop in a WASM LZMA module to swap the gzip fallback for real .lzma bytes.
Base64 Transport
Output is base64-encoded for safe copy/paste between systems.
How to Use LZMA 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
Gzip / Brotli Compressor
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Deflate Compressor
Deflate algorithm compress/decompress (native CompressionStream).
Zlib Compressor
Zlib format (RFC 1950) compress and decompress.
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.