It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
This image was acquired from
Keywords from Image Description:
Classic smiley.svg en Smile happy happiness pt Alegria felicidade sorriso User FML draw FML own other fields other versions Smilies happy SVG smilies
Page 2017 Free-images.com. All images are Public Domain