How to resize an image to the exact proportion or dimension without losing quality

Suppose that you’ve taken a photo with your digital camera or mobile phone, and want to set this image as your Windows or Mac desktop wallpaper. In most cases, the proportion of your image will not match the proportion of your desktop, you can resize it with MS paint and keep the original proportion, however, it’s almost impossible to crop and resize it to match the proportion of your monitor with MS paint, it’s too simple to accomplish this task. Continue reading