lz4/lz4
Extremely Fast Compression algorithm observed · 2026-10-21
Health v2 · maintenance only
68/100
- Activity 100
- Release rhythm 8
- Longevity 100
Flags: no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-21. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 4592
- days_rel: n/a
- days_push: 0
- n_releases_24m: 0
Adoption not part of the score
12164 stars · 1613 forks observed · 2026-10-21
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
LZ4 is a lossless compression algorithm and C library focused on extremely fast compression and decompression speeds, with a high-compression LZ4_HC variant and dictionary compression support. It also ships a command-line tool and bindings for many languages.
Use cases
- compress data at very high speed
- fast decompression of game assets or kernel images
- compress small files with a trained dictionary
- reduce storage footprint with minimal CPU overhead
- embed a lightweight compression codec in C or other languages
When to choose
- speed matters more than compression ratio
- you need multi-GB/s decompression near RAM speed
- you want a tiny, portable, dependency-free C library
- compressing small data where dictionary compression helps
When to avoid
- you need maximum compression ratio rather than speed
- you need built-in encryption or archival features like tar/zip
- you prefer a single modern format like zstd with richer features
Facets
library · maturity stable
compression cli developer-tools files performance cross-platform c cli lossless-compression lz77 high-performance dictionary-compression
2 sources
- readme: https://github.com/lz4/lz4 · fetched 2026-10-21 · 6d3ea6404c84
- homepage: http://www.lz4.org · fetched 2026-08-29 · 59cb7e4d1b64
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| lz4/lz4 | main | 68 |
For agents
Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem