GIMP's Scaling tool is typically used to proportionately increase or decrease the size attributes of images, but the tool can also be used to stretch a single single dimension.

How to Optimize Images for the Web on Gimp. When it comes to choosing images for your business website, you usually have to make a trade-off between quality and compression: higher quality ...

I needed to remove the white background from several hundred images in PNG format and replace it with transparency. I know you can automate Photoshop but that’s like getting into a Sherman tank ...