Maximum density
Smallest for web and app delivery. 10-bit, HDR, alpha — one format for all.
AVIF is the smallest delivery format — smaller than WebP at the same quality, with HDR and 10-bit. Re-compress AVIF or convert anything to AVIF locally.
AVIF saves ~20–30% over WebP, ~50% over JPG at the same visual quality. Encode is slower, but you do it once locally.
AVIF is smaller, WebP is faster and more compatible. Pick per batch.
Use WebP for speed/compatibility, AVIF for maximum density. Compressy does both offline.
This benchmark run covered jpg→jpg, png→webp, jpg→webp at quality 85 balanced (456-545 files). AVIF was not re-measured in this run — WebP real numbers are the baseline; AVIF delivers 15–25% smaller than WebP at same quality per literature, at slower encode.
AVIF not re-benchmarked here — expect 15–25% smaller than WebP at same quality. See /benchmarks/ for methodology.
Faster encode. Compress WebP →
Convert photos. Compress JPG →
Convert screenshots. Compress PNG →
For delivery, yes — 20–30% smaller than WebP. You encode once locally, serve the smaller file forever. Batch on 4/8 threads to hide the cost.
Yes. Set output to AVIF and convert the whole batch in one pass. Alpha and HDR preserved where supported.
No. All AVIF processing is local. No upload, no account.
Convert or re-compress AVIF offline — maximum density without the cloud.