Things You'll Need
Instructions
Download and install the free Microsoft Image Resizer to your computer. Once installed, open the program on your computer.
Check the size of your digital photo frame. If you have a frame with a screen size of six inches or smaller along the longest side, then you will want to resize the pictures to 480 x 234 pixels. If your screen size is between 6 to 11 inches on the longest side you will want to resize your pictures to 800 x 400 pixels. For larger screens that are 12 to 17 inches on the longest side, resize your pictures to 1024 x 768 pixels.
Open the picture folder you want to resize. To resize multiple photos, click on the first photo with your mouse, then hold down the "Shift" key and click on the last photo. This will select all the photos you want resized. Right-click on any of selected photos and select “Resize photos.” A menu box will come up with four sizing options: small, medium, large and handheld PC. Select the appropriate size, click “OK” and the program will resize your photos.