I m getting this error when tring to see the speed of my website in google page speed:
Optimize images Properly formatting and compressing images can save many bytes of data. Optimize the following images to reduce their size by 20.5KiB (42% reduction). Losslessly compressing http://waybackmachinedownloader.com/en/img/home_img.jpg could save 20.5KiB (42% reduction).
I can't find how can I compress jpg images. I guess it should be with htaccess but I can't find how. This website is developed in php.