PNG metadata parsing in js?

Question

PNG

Hello. I need to parse a png file and get chunks. And all this must be done in JS. I found a script that is needed here but it uses promises and nothing works in IE.
Or this one: here , but for some reason it does not correctly consider the "IDAT" chunk in mozilla and not, although everything is ok in chrome. Who will tell you what's wrong?

Answer 1

So load in IE https://www.promisejs.org/