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@kylek717 - This depends on a few things.
If you are using only your original photos, it's a good idea to watermark them and make a copyright statement at the bottom of your post...unless you're okay with other people using your work.
If you're using ALL pixabay or giphy material, a blanket statement works fine too.

I tend to "image source" everything but if I'm pressed for time, I will state something like, "all images used on my post are from...xxx...unless otherwise noted."

There is a great variety of ways to cite the photos/illustrations. Just remember that if it's not yours, it's a good idea to let your readers know it. This develops trust in you and helps build your authority.

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