You can sharpen an image in GIMP on your computer using the Sharpen tool or the Sharpen filter. Here is a full tutorial on how to do it!

Using GIMP, you can crop an image. rotate or flip a photo, Change dimension & scale of a picture, change the file size of a JPEG photo, etc.

How to Crop a Circle Out of a Picture in GIMP. The GIMP open source graphics program includes a number of editing tools, including a cropping tool and selection tool. There's no circular cropping ...

How to Make a Picture Washed Out in GIMP. As its name implies, the free GNU Image Manipulation Program allows you to alter the look of your digital photos. The "Colors" menu includes options that ...