This app will make thumbnails of your images. Set a size in pixels and set a resolution, optionally you can make a non-square image square and you can choose the color of the pixels that are added to make the image square. You can save the thumbnails or images in jpeg, png, gif or tiff formats.
You can also use this app for quick and simple image conversions, use the setting “Another format” and you can save a variation of image formats to jpeg, tiff, png or gif in the same size and resolution as the original file.
To ensure proper functionality, please be sure to read all documentation covering general usage and most importantly, the required installation of 3rd party apps.