Perhaps the best way to broadcast that your work belongs to you is branding it with a watermark. As people share an image over and over again social media, the artist's credit can get lost. But labeling your visuals with your name or another identifier prevents this, as well as deterring potential copyright infringers. Plus, you don't need to register a copyright to stick your symbol on your creation. To drop your name, logo, and even the date on top of a picture, you can use any decent image-editing program. That said, if you're stuck for inspiration, then free web app Pixlr will do the job. Watermark is another free online option, and it also offers a $4.17-per-month subscription that lets you process multiple images at once.