Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 650.5KiB (68% reduction).
Compressing http://slepemapy.cz/…c/dist/js/bower-libs.min.fc4d9b933366.js could save 435.2KiB (66% reduction).
Compressing http://slepemapy.cz/…ic/dist/js/geography.min.14fc4687bb39.js could save 83.7KiB (67% reduction).
Compressing http://slepemapy.cz/…c/dist/js/proso-apps-all.6aa561362bb2.js could save 61.2KiB (79% reduction).
Compressing http://slepemapy.cz/…c/dist/js/geography.html.dd6ba5d0b6a5.js could save 27.5KiB (77% reduction).
See more at https://developers.google.com/speed/pagespeed/insights/?url=slepemapy.cz&tab=mobile