Image Resizer Tool is described as 'A very fast image resizer tool to resize and crop your images, photos, pictures right in your browser' and is an website in the Photos & Graphics category. There are three alternatives to Image Resizer Tool, not only websites but also apps for Windows, Mac and PortableApps.com. The best alternative is IrfanView. It's not free, so if you're looking for a free alternative, you could try NX Studio.
A new image viewer that has nice features like identifying and generating colors from image, changing colors of image with color adjustment and color matrix tools, crop & split image for Instagram, TIF/GIF Animated extractor, batch functions.