mozilla/mozjpeg
Improved JPEG encoder. observed · 2026-08-28
Health v2 · maintenance only
35/100
- Activity 28
- 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 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 4616
- days_rel: n/a
- days_push: 436
- n_releases_24m: 0
Adoption not part of the score
5716 stars · 436 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
MozJPEG is an improved JPEG encoder built as a patch on libjpeg-turbo, producing smaller files at higher visual quality while remaining fully JPEG-standard compatible. It offers a libjpeg-compatible C API/ABI for embedding in graphics programs, plus demo command-line tools like cjpeg and jpegtran.
Use cases
- compress jpeg images to smaller file sizes
- optimize jpegs for faster web page loads
- losslessly reduce size of existing jpeg files
- convert png or other formats to optimized jpeg
- embed a better jpeg encoder in an image processing app
When to choose
- you need smaller JPEGs than libjpeg-turbo produces at the same quality
- you want a drop-in libjpeg replacement with better compression
- you're optimizing images for web performance pipelines
When to avoid
- you need modern formats like WebP or AVIF for better compression
- you need fast encoding over compression efficiency (MozJPEG trades speed for size)
- you want a polished end-user tool rather than a library
Facets
library · maturity stable
image-processing compression image-processing web-development performance cross-platform cli c jpeg-encoder image-optimization libjpeg-turbo web-performance lossless-optimization
1 source
- readme: https://github.com/mozilla/mozjpeg · fetched 2026-08-28 · dd3f431d7d71
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| mozilla/mozjpeg | main | 35 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem