The Homepage of Carl by Carl Guyton is licensed under a Creative Commons Attribution 4.0 International License. This is also known as a “Free Culture License“.
What this means is that I don’t care what you do with the content you find on my site. Do whatever you like, the only thing I ask is that you attribute me in some way.
I have always been a big fan of the “Creative Commons” movement and I encourage anyone who creates things online to license out their stuff in the same way because it’ll encourage more people to share it.