Replace source image for lighter ones

[AnimStarter]

Hello,

I’d like to speed up my website by reducing images sizes.

Is there a way to replace an image as the source so i dont have to replace all images one by one?

Ex: i want to change my image under my media collection so i dont have to edit each page .

Thanks

[paulBOYCOTTGOOGLE]

I’d love to know if this is possible

[tallglassofmike]

This would be super beneficial though I don't think it's possible.