One of the great things about Tumblr (and most other blogging/social networking websites) is its uniform post layout, where all your submissions are automatically resized to the appropriate format for optimal web viewing! Wow! It’s like this exercise is almost irrelevant! Oh, the wonders of the internet.
Nevertheless, it is important to know how to resize an image, so that you are not a complete dunce in the realm of graphic manipulation. What the heck is Gimp? Use photoshop, people. Free trials.
