[talloaktrees]

When some websites are 5mb after all ad.content is loaded. It's doesn't seem that much

[SahAssar]

It isn't the size that is the problem as much as that it is on the critical path for every image that uses it and that it does not support progressive rendering or rendering parts of the image as the file is downloaded. go to https://bellard.org/bpg/lena.html and set your browser to throttle to GPRS speeds and you will see a pretty huge difference.