google/guetzli
Perceptual JPEG encoder observed · 2026-08-28
Health v2 · maintenance only
10/100
- Activity 0
- Release rhythm 8
- Longevity 100
Flags: archived
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 3603
- days_rel: n/a
- days_push: 1229
- n_releases_24m: 0
Adoption not part of the score
12913 stars · 995 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
Guetzli is a perceptual JPEG encoder from Google that produces images 20-30% smaller than libjpeg at equivalent visual quality. It is a C++ command-line tool that generates sequential (nonprogressive) JPEGs.
Use cases
- compress jpeg images to smaller file sizes without visible quality loss
- optimize images for faster web page loading
- batch re-encode photos at high visual quality
- reduce bandwidth for image-heavy websites
- compare jpeg encoders for compression density
When to choose
- you need maximum jpeg compression at high visual quality and can tolerate slow encoding
- you are optimizing static image assets for the web
- you want a free, open-source offline image compressor
When to avoid
- you need fast or real-time encoding - guetzli is very slow
- you need progressive JPEG output
- you want an actively developed tool with recent improvements
- you need to encode formats other than JPEG input (e.g., PNG output)
Facets
cli-tool · maturity maintenance
image-processing compression image-processing graphics web-development windows cli cross-platform jpeg-encoder perceptual-compression image-optimization c-plus-plus linux macos
1 source
- readme: https://github.com/google/guetzli · fetched 2026-08-28 · b1260eefac39
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| google/guetzli | main | 10 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem