Surfing some of my favourite blogs today, I came across a post by Donna-Marie about choosing suitable fonts. As well as being a good summary of which fonts work well in different media, it reminded me of someone recently asking about using different sized fonts – and recent experiences of unsuitable font choices.
I remember doing school assignments where I’d use different fancy fonts for each heading and changed the text to suit the amount of information in each section, and so on – and I was proud of being so versatile! But looking back (or at children’s work now) I can see that it looks childish and puts the focus on the fonts rather than the content. It isn’t very professional to give the impression you are trying to minimise the content!
As a general rule, it is better to stick to one font style and size in a single document. It is consistent which makes it easier to read (the eye doesn’t have to keep adjusting to different fonts) and it also looks clean and professional. And to be honest, it is also easier to prepare than swapping fonts all the time!
The common exceptions in font sizes would be:
If you are tempted to change font sizes to break up a chunk of text, consider bullet points, italics, bold, more paragraph breaks and page layout as alternatives.