Online Photo Resizer is a free tool photo editor to resize image size in the exact custom file formats and pixels, crop your photo, rotate, shrink and reduce image file. Image resize online tool supports popular formats like JPG, PNG, BMP, and GIF among others without any limitation on file dimensions. It offers the art effects and resizing method as a high-quality distortion-less graphic resizing. While "high quality" isn't exactly a scientific measure, during testing, our resizing results were comparable to other resizing applications, and reasonable up-scaling had good results.
Also, with resize image online tool, you can do simple cropping, rotating, scaling to different sizes, and flipping it vertically or horizontally and exactly resize image pixels.