Ji Lee creates typographic illustrations that cleverly relate to the words themselves for his Word as Image series. Logos that involve words can often be playful with elements close to typographic, creating a new way to perceive the message.
Different file types serve various purposes. The pros and cons of a particular file type are what may make it more useful over another. A PNG file may not be the best choice when you are looking to keep file sizes low and have an image that has full cover