.xdata/icons/filecase1.png is icons/filecase.png re-exported by GIMP: It became a lot smaller (almost half the size), apparently only due to differences in the compression factor, because all these transformations should be lossless.
icons/filecase.png is icons/filecase_copia.png stripped of its "Adobe (1998)" colour-profile.
.xdata/icons/filecase1.pngisicons/filecase.pngre-exported by GIMP: It became a lot smaller (almost half the size), apparently only due to differences in the compression factor, because all these transformations should be lossless.icons/filecase.pngisicons/filecase_copia.pngstripped of its "Adobe (1998)" colour-profile.