DummyImage vs Icons8

DummyImage generates placeholder images on the fly from a simple URL pattern — width, height, background/text color, and format (PNG, GIF, or JPG) are all encoded in the path — with no signup or key. A live GET against the real host returned a genuine PNG carrying Access-Control-Allow-Origin: *, resolving cors unknown -> yes and reconfirming auth None.

Icons8 lets any page embed one of its icons by simply writing an image URL — no signup, key, or client library needed — with free use requiring attribution and paid plans removing that requirement. A live GET against the real host, img.icons8.com, returned a genuine icon image while carrying Access-Control-Allow-Origin: *, resolving cors unknown -> yes and reconfirming auth None.