How to Resize an Image on iPhone is easiest when you use the current iPhone controls rather than older menu paths. The steps below focus on the method that is most useful on recent iOS versions while noting where older hardware or software can differ.
How to do it
- Open the Shortcuts app.
- Create a new shortcut and add the Resize Image action.
- Choose or ask for the target width or size.
- Add Save to Photo Album or another save action.
- Run the shortcut and select the image you want to resize.
Important details
Photos does not offer a simple universal ‘resize dimensions’ field for ordinary images. Shortcuts is a built-in way to create resized copies without installing another editor. Cropping changes composition, not merely pixel dimensions.
If it does not work
Check that the iPhone is updated to the newest iOS version available for that model, then repeat the procedure carefully. If a named menu is not visible, use the search field in Settings where appropriate and confirm that Screen Time, device-management restrictions, or account settings are not preventing the change. Avoid resetting the entire iPhone for a problem that is limited to one app or setting.
Choose dimensions carefully
Reducing pixel dimensions can make an image easier to upload and may reduce its file size, but dimensions and compression are not the same thing. Keep the original photo until you confirm the resized copy looks acceptable. If you frequently need the same width for website images or email attachments, a reusable Shortcut is faster and more consistent than manually editing each picture in a third-party app.