Everyone likes to email digital photos, but no one likes to receive pictures that are so huge they take forever to download and require you to scroll left and right and up and down to see the entire image.
Microsoft ImageResizer PowerToy is a free utility that plugs into Windows Explorer. Download and install ImageResizer from the link at the end of this post and then browse to the folder where you stored your digital photos.
Select the photos you want to resize, right-click, and choose Resize Pictures from the context menu to get the ImageResizer dialog box. Click the Advanced button to see all of the options as shown in the pic.

From there, choose one of the ImageResizer suggested dimensions, or enter your custom width and height. Be sure to select the Make Pictures Smaller But Not Larger option if you don’t want to size up — and you won’t, because making digital photos larger degrades quality. Click OK.
By default, the ImageResizer creates copies of the files and adds the chosen size to the filename. For example, if your original photo filename was Jeremy001.jpg, and you resized it using the Small setting, the new version will be named Jeremy001 (Small).jpg.
By default, the ImageResizer creates copies of the files and adds the chosen size to the filename. For example, if your original photo filename was Jeremy001.jpg, and you resized it using the Small setting, the new version will be named Jeremy001 (Small).jpg.
Download here