I want to create a simple wordpress blog site. At the moment I will use a template, but I would like to develop my own afterwards. And I have one concern related to images.
Current template has nice big images and no sidebar, but in my future template I will definitely have a sidebar, which means that I will have to change image dimensions.
My main question - is there a good way to change image dimensions without using css? I wouldn't like to re-create all posts after I change template, because there will be a lot of them.
For example, images at the moment are 900px wide (height is not as important), but in the future template I plan that I will need to change image width to 600px. I would prefer not to do it with css's "max-width".
Perhaps there is a tool that can preserve original image and then re-create them with new dimensions afterwards?