Manual:$wgUseTinyRGBForJPGThumbnails

ImageMagick: $wgUseTinyRGBForJPGThumbnails
Swaps JPGs that use sRGB ICC profile with TinyRGB profile
Introduced in version:1.26.0 (Gerrit change 218372; git #584a2393)
Removed in version:Still in use
Allowed values:(boolean)
Default value:false

Details

When this variable is true and JPGs use the sRGB ICC profile, swaps it for the more lightweight (and free) TinyRGB profile when generating thumbnails.