The extension always makes a copy of the original, so the original is kept intact. To use this extension, open the Apple Photos app, select any photo, then Edit photo, tap the extension button, and select the extension. Photo Extension Resize: + Quick and easy to use. + Supported in Editing mode in the Apple Photos app. + Works on the iPhone and iPad. + Available from Edit Extension (no Action Extension) + Resizes photo by percentage (%). + Resizes photo by pixel height and width constraining to original proportions. + Resizes photo to custom pixel height and width. + Resizes photo to preset sizes like VGA, 1080p, iPhone, iPad, and more. + Always makes a copy, so your original photo is left intact. MORE APPS: Check out all our apps at https://digiguys.com SUPPORT: We are here to help https://www.digiguys.com/help FACEBOOK PAGE: Join our Facebook Page for tips, ideas, support, and much more... be part of the community! https://www.facebook.com/digiguysapps