Image Resizer for Windows 3.1.2 changelog:
For example, after installing the Microsoft Camera Codec Pack, vendor-specific formats from Canon, Olympus, Pentax, Nikon, Sony, Olympus, Leica, Minolta, Epson, and Panasonic can be resized.
However, Image Resizer for Windows will also be able to use any Windows Imaging Codecs (WIC) that have been installed. By default, image files with the following extensions can be resized: bmp, dib, gif, ico, jpe, jpeg, jpg, png, tif, tiff, wdp. It was created so that modern Windows users could regain the joy they left behind with Microsoft's Image Resizer Powertoy for Windows XP.
It’s a GitHub project so it’s Open Source, free, and safe for general and widespread use. This software by Brice Lambson is a Windows Explorer shell extension that lets you resize one or more selected image files directly from Windows Explorer by right-clicking.