Resize IPad Photos

Resize in what way?

Do you want to change actual file size of the photo?

Do you want to change the physical dimensions of the photo?

Do you maybe just want to get a section of the photo you took?

What are you trying to accomplish exactly?

To change the physical dimensions of the photo, you can use the "Edit" option in the Photos app, and then select the Crop option from the left side toolbar, then drag the white border from the slightly thicker handles to change the dimensions of the image or crop it to a specific section.

click here ➜ Edit photos and videos on iPad - Apple Support

Again, the "size" in reference to what?

The file's storage size? As instead of being 12MB its 5MB? 5MB is smaller than 12MB.

The physical dimensions of the photo? instead of being 3024px by 4032px its 1512px by 2016px?

What "size" are you referring to exactly?

What property of the photo needs to be smaller?

Repeating the same word with no context is not very helpful.