While there are plenty of photo editing programs available that will allow you to re-size and add custom features to images, some of them come at a price and involve a steep learning curve. Adobe Photoshop is a great tool for those with design experience, but it can be overwhelming for the average WordPress user looking to include images and other multimedia on their posts. User will also have to pay for a subscription and unless you plan on regularly editing images, it might not be worth the money.