google/zopfli
Zopfli Compression Algorithm is a compression library programmed in C to perform very good, but slow, deflate or zlib compression. 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 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 4195
- days_rel: n/a
- days_push: 753
- n_releases_24m: 0
Adoption not part of the score
3595 stars · 353 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
Zopfli is a C library implementing a compression algorithm that produces highly optimized, deflate-compatible output (deflate, zlib, and gzip formats) at the cost of slow compression speed. It includes a command-line binary for creating very well-compressed gzip files, and only compresses—decompression uses standard zlib tools.
Use cases
- compress static web assets to the smallest possible gzip size
- pre-compress files for serving with gzip_static
- reduce size of embedded firmware or data blobs with deflate
- create maximally compressed zip/gzip archives offline
- optimize PNG-like deflate streams for smaller payloads
When to choose
- compression ratio matters more than compression speed
- output must remain compatible with standard zlib/deflate decompressors
- compressing static assets once and serving many times
When to avoid
- you need fast, real-time compression
- you need decompression functionality (Zopfli only compresses)
- streaming or incremental compression is required
Facets
library · maturity maintenance
compression files developer-tools performance windows cross-platform cli deflate gzip zlib c-library lossless-compression linux macos
1 source
- readme: https://github.com/google/zopfli · fetched 2026-08-28 · 436a47ad1829
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| google/zopfli | main | 10 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem