This is fine for some uses however if you have a major amount of content then it is just easier to configure the web server to compress the images with Google P

This is fine for some uses however if you have a major amount of content then it is just easier to configure the web server to compress the images with Google Pagespeed. This you can turn off with a switch added to the URL. This means you don't have to care about the images you upload as that content will be served optimised. You can then focus on your content rather than be forever compressing images manually. Importantly Pagespeed can use 4:2:2 colourspace which can work very well for reducing the file sizes. You can also set it to serve even smaller .webp images where browsers can render them.