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LZMA Compressor

Compression · Free Online Tool

LZMA/LZMA2 high-ratio compress and decompress.

By EZ4Code TeamLast updated: 2026-10-29

Browsers do not expose LZMA via 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.

Input Text234 chars

Compressed (Base64)

0 chars

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.

Can I decompress data produced by other software?

Yes. The decompression tools accept standard gzip, deflate, and brotli streams from any compliant source — command-line tools, web servers, or other libraries.

Why does the compressed output look unreadable?

Compressed data is binary, not text. Use Copy as Base64 or download it as a file — pasting raw compressed bytes into a text field will show garbled characters.