![Hans-Christoph Steiner](/assets/img/avatar_default.png)
zopfli is a compression algorithm that optimizes the standard ZIP DEFLATE compression. All of this is visually lossless, except for two minor things: * lossy_transparent: remove colors behind alpha channel 0. No visual difference, removes hidden information. * lossy_8bit: convert 16-bit per channel image to 8-bit per channel. This was done using the 'zopfli' package in Debian/buster, invoking this way: zopflipng --iterations=50 --filters=01234mepb --lossy_8bit --lossy_transparent -y $f ${f}.zopfli.png
38 KiB
320x512px
38 KiB
320x512px
![](/missytake/fdroiddata/raw/commit/661e02bb1d670bd057782b59117e56948cb03728/metadata/org.mozilla.firefox/en-US/phoneScreenshots/23.png)