Plots

Distortion metrics can be found here.

Methodology

Large images were first encoded with Mozjpeg at q85 filesizes. Big is 125% of Large. Medium is 60% of Large. Small is 60% of Medium. Tiny is 60% of Small. Everything else was matched to +/- 5% filesize.

All the pictures have been compressed from RGB PNGs.

Formats

This study compares 6 differents encoders:

• AVIF: github.com/AOMediaCodec/libavif/commit/8c0cf99a919efeae64d19cdaff892bf4dd304880
  (using AOM: aomedia.googlesource.com/aom/+/fc430c57c7b0307b4c5ffb686cd90b3c010d08d2)
  (using libyuv: chromium.googlesource.com/libyuv/libyuv/+/9b17af9bef41aec80373a7d4689bb77bac33eab5)
• HEIC: github.com/strukturag/libheif/commit/081b6c9c8e3d4c99d893dc7ef065a0020746db5d
(using x265 HEVC encoder (3.5+1-f0c1022b6))
• JPEG-XL: gitlab.com/wg1/jpeg-xl/-/commit/a9b3852113983ed27bfcd81a1ebbe498a74f8925
• MozJPEG: github.com/mozilla/mozjpeg/commit/fd569212597dcc249752bd38ea58a4e2072da24f
• WebP: chromium.googlesource.com/webm/libwebp/+/e8f83de2867456a75b13aa1e876b22e2d1e1c077
• WebP2: chromium.googlesource.com/codecs/libwebp2/+/0ff536163c080f3cf215b2a3a380440b9749780f

The Python scripts used to generate the compressed images are available on the GIT repository. The configuration file containing the codec settings is recipes.json.

Notes

Updated: 2022-08-23

This page is based on eclipseo.github.io comparison page. Originally developed by xooyoozoo. A list of sources for the images can be found in this text file.

LICENSE