You can upload images in any format, including JPG, PNG, GIF, etc. Here we’ll introduce two methods of uploading images in the editor:
To change the layout of your gallery showing in a post. Click the Layout button. You can arrange how your gallery will be displayed as multiple images are uploaded.
You can insert no more than 9 photos in a gallery at once. The photos’ layout cannot be changed while the gallery reaches its maximum. But you can create more than one gallery in a post.
There are many pre-built layouts that you can choose depending on how many images you upload at once:
Hover over the gallery. Click the + button to add more photos.
You can delete a particular image by pressing the Remove button as you hover over it. Or click the Remove gallery button to delete all images uploaded.
Place your cursor over an image. Drag it to move around and then drop at your desired location.