Before my daughter nixed the idea of publishing one of her bridal photographs on SlingWords this past Saturday, I had already prepared the image by "branding" it with a copyright notice.
This is easy to do. If you're using your own photographs on your websites and would like to at least make it more difficult for someone to "lift" the image without your permission, let me tell you how to go about it.
There are a lot of free and fee-based apps that accomplish this. I like Watermark Tool because it's easy to use and free.
"Watermark Tool is an online watermarking software that allows you to quickly and easily protect your images with a visible watermark."
There are a lot of options available, and you can personalize the branding by text size, color, and position of the brand.
The basic Watermark Tool is free. You don't even have to register if you don't want to. You have instant access to the app.
If you want more features, then sign up for WMT Plus which gives you a higher file size limit, the ability to save your watermark settings for future use, and the option to use an image as a watermark.
Do what you can to protect your images and keep someone from unauthorized use of them. This is one way.