Photoshop Timeline is an easy way to make a moving GIF file from any artwork. This is how to do it in 5 super simple steps.
1. Prepare Artwork
Set up your individual "frames", meaning each artboard/PNG/JPG you are planning on combining into your looping GIF. I am using nine total artwork files of the pizza below, including one blank.
2. Open Artwork in Photoshop
From the top menu, File>Scripts>Load Files Into Stack... (this will load all artwork as layers in a single file). Browse to select your files.
Open the Timeline panel from the top menu, Window>Timeline. Change the dropdown menu to Create Frame Animation and then click to load the first frame.
You will only see one of your layers appear at first. To load them all, click the hamburger menu at the top right corner of the Timeline panel. Select Make Frames From Layers. Now, all of your layers appear.
4. Edit Timeline
From here, you can move artwork around in your timeline, change the speed, and select how many times you would like your file to loop.
5. Save GIF
File>Export>Save for Web (Legacy)... and make sure to select GIF as the file type. You should see the animation information at the bottom of the window. Last, Save!