[pianowow]

In your demo, how are the images chosen for each image and algorithm combination? I mean how do you choose the compression level for each, to keep the comparison fair? I would hope you have a budget in KB and go as high quality as you can without going over that KB limit.

[twotwotwo]

Not my demo, it's from someone at Mozilla, but, yes, the usual practice for comparisons is to match the size of the compressed content. I don't have context for that page, so I can't actually cite anything here.