Image compression is a dark art – take it too far and you end up with an image that looks like custard. However the benefits (fast loading web pages, reduced bandwidth costs) are worth making an effort for. Compresser.io is a cool cloud based tool that will shrink your images and retain details. I tried it on an image I exported from Lightroom in JPEG with 90% compression and the results are in fact pretty amazing. You can view the two images below and judge for yourself or of course just upload your own test images.