

Step 5: To keep the aspect ratio, click the box next to Maintain Aspect Ratio.Īs you enter a number into one of the boxes, the other box will automatically adjust its number in proportion to the number you just entered. Another pop-up window appears (shown on the right). Otherwise, click Define Custom Dimensions for a specific size. Select one of the three preset sizes (shown on the left). Step 3: Select Resize on the drop-down menu. How to back up an iPhone using Mac, iCloud or PC This little-known feature is my favorite part of using a Mac and iPhone together
