04-03-2020, 07:10 AM
It is probably worth posting straight from Gimp help:
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Quote:Use arithmetic coding
Arithmetic encoding is a form of entropy encoding (a lossless data compression scheme) that, since GIMP-2.10 can be used in exporting as JPEG. Images using arithmetic encoding can be 5 - 10 % smaller. But older softwares may have trouble opening these images.
Not enabled by default. User has to turn this setting on.