GIMP is a great image editor that is free and open source. If you want something that is powerful with a ton of features and plugins, then this is it. Unfortunately, it is not the easiest image editor ...
FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor. It has a wide range of features including image viewing, compression, resizing, retouching and colour ...
When it comes to knowing how to resize an image with GIMP, a basic resize is an easy process, as you'd hope. Open up your image in GIMP, click on "Image" along the top menu, then select "Scale Image" ...