Smooth round corners


I just wanted to ask how to create smooth round corners?
I make them in photoshop and save them as png24 files. But they don’t seem to be smooth. Here is an example.

The round corners are not good at all on this site!

Does anyone know something about it?


The pen tool and rounded rectangle tool are good, yes.

I use the rounded rectangle tool for the round corner boxes,too, but the corners are not really smoothly rounded. I thought there might be something I am not doing or not understanding.

The thread you have linked, mentions the same tecniques which I use already.

There was a similar thread on this a day or so ago. See if this helps: