Val Town is a collaborative website to build and scale JavaScript apps.
Deploy APIs, crons, & store data – all from the browser, and deployed in miliseconds.
This tiny smiley face is rendered by this val: 
The image response is cached by the CDN, so make sure to change the image name if you make code changes. Any name with a .png extension will work: https://maxm-smileypng.web.val.run/-.png