About LZ4
LZ4 is an extremely fast lossless compression algorithm focused on compression and
decompression speed. It trades some compression ratio for dramatically higher throughput
compared to algorithms like zlib or zstd. Typical compression speeds exceed 500 MB/s,
and decompression can surpass 4 GB/s on modern hardware.
Fast mode targets maximum speed. L1–L9 are
high-compression modes that achieve better ratios at the cost of slower compression
(decompression stays fast). L6 is a good balance for archiving.
Input Data
Live Benchmark
Runs your current input data through all compression levels and measures throughput. Each level runs for ~300 ms to get a stable result. The benchmark runs on the WASM thread so the page will be unresponsive for a few seconds.
| Level | Compression Ratio | Compress MB/s | Decompress MB/s |
|---|