True, that is the default size. Important not to forget individual resolution differences.
I have ones that are a little too big then, for lower resolution monitors. Like the one below. Since my browser was on 120-150% magnification with 1280x720 monitor, I thought they would all look okay. Its easy to make them smaller though.
It took no time at all to crop and resize the photo above.
Its blurry and not great. I'm getting a new camera though, my eight year old 12 megapixel went out. I can get a better new camera for half what the old one cost. Technology is good at that.