Optimize startpage images

Saved 595,9 KB out of 1,2 MB. 48,8% per file on average (up to 67,9%).
Optimize project images

Saved 577,6 KB out of 1,2 MB. 45,3% per file on average (up to 73,2%).
Optimize pages images

Saved 83,5 KB out of 601,5 KB. 26,3% per file on average (up to 38,4%).