Picture Resizer is a single-EXE, high speed batch JPG resizer. The tool sits on the Windows desktop and resizes JPG images sent to it via drag-and-drop. The resized image files are saved in the same folder as the original files. Names of the new pictures will be based on the original names, with a suffix indicating their size. For example, the resized version of MyPhoto.jpg will be called MyPhoto-400.jpg, where the number 400 indicates the size of the picture.
What is unique about this program is that there are no settings to speak of. The desired final size is set by renaming the EXE. For example, PhotoResize800.exe means maximum width/height of 800 pixels, PhotoResizeP50.exe means 50% of original size and so on. There are too many variations to fully list here.
For further customization, you can also add command line arguments to the executable shortcut. They allow you to change the output folder, specify the JPEG quality factor etc.