Or save the page if “All of that code runs in your own browser.”

Sir, this is not how the internet works. I thought people on the Fediverse are a bit more technically-versed than the average population.

When I disconnect my internet, I can still crop images, save them to my machine in various formats and use the tools in the left sidebar. Photopea does not use the developers' server to do these tasks, or otherwise I wouldn't be able to do them at all, when I go offline.

That doesn't mean I can just save the whole website locally and run it as is. Mostly, because the developers' code contains references to online sources or might bug out in certain places if it's not run on the intended domain, etc.

If I disassembled the obfuscated code and replaced those online references, I'm pretty sure the whole thing would just work. Not being able to save a website locally and just run it as is does not disprove my point that the application does not technically need a server to run. It's just that the developer coded it that way.

It seems like you either cannot understand the technical aspects of what I'm saying or you believe you had a great "Got him!" moment when you said I was freeloading on the devs' machine and now you decided to stick with it. Either way, not worth any more of time.