Start Paint and load the image file. In Windows 10, press the right mouse button over the image and pick Resize from the popup menu. In the Resize image page, pick Define custom dimensions to display the Resize image pane. From the Resize image pane, you can specify a new width and height for your image in pixels.
What Sells Best On Shutterstock?
Some types of photos that sell best are Portrait Photography, Food Photography, Landscapes (usually with people) and fine art photography (artsy).