What is it that you think they did? They have large claims and can't answer a single technical question. They don't even seem to know the difference between lossless and lossy compression or a png and a jpeg.

But that's my point: you gotta learn to build products and the hate and criticism is sometimes really unbelievable. You're exposing yourself to the world. And in the end you pay for a service, no matter if they wrapped compressionjs if it adds value. And sometimes that value takes a bit of iteration. Instead of using positive reinforcement, the comments feel pretty hateful at times. HN is often not a supportive environment, but would be awesome if it would be, right?

Did you read through this thread? What you are saying is completely detached from what they are saying. They are claiming they made a new product/service and that it beats all sorts of competitors. They aren't claiming they are learning or doing something for the first time.

Then people say that they can't get any results from it and they can't answer basic questions. They even put jpg and jpeg as two different formats.

People are being exceptionally nice in this thread from someone who probably copy and pasted from code generation to try to get free advertisement and make a quick buck.

The comments aren't 'hateful' they are asking the most basic technical questions and pointing out that none of these claims are actually true.