The Rules of Typography

Over centuries, as type has developed, guidelines and best practices have emerged that, when followed, can ensure that textual content is clear and easy to understand. A clear message is surely the goal of graphic design.

Blog article by James Newcombe. Originally posted 16 September 2009.

The rules that follow are not intended to stifle creativity — but it is important to understand them before you can effectively ‘break’ them.

Use a good typeface

When you’re starting out in design, the temptation to use all those funky looking free fonts off the internet can be hard to fight. Most successful designers can count their favourite typefaces on their hands, however, and you’ll more than likely find that they are all famous, commercial fonts. The reason for this is that they are proven to be effective in a variety of situations, and are always clear and easy to read.

Don’t use too many fonts at once

overload of fonts

Another giveaway of a beginner designer is the excessive use of multiple fonts on a piece. The reason why you may want to use more than one font, would be to create emphasis, or to separate one piece of information from another. For example, in a news article, you might want to display the body copy in a serifed font, and then the headline and quotations in a sans–serif.

Introducing more than say, three or four different fonts to your design makes it harder for a reader to understand what is and isn’t important.

Do not set text in capital letters

graphic illustrating how the shape of words makes them easier to recognise

The outline illustrates the extra thinking capital letters involve

When we read, the eye quickly scans words rather than looking at one letter at a time. Lower case characters really aid this process with their ascenders and descenders making them easily distinguishable from one another. All caps has its place sometimes — such as in headings or logos — but reading paragraphs of copy set in that way is very tiring on the eyes due to its monotonous and uniform appearance.

example of a UK road sign

An example of a UK road sign. Notice the high contrast type, set in title–case for quick and easy reading

Signage, and any other information that needs to read and understood very quickly, should also be set using a combination of capitals and lower case characters.

Consider the length of your lines

graphic showing line length considerations

The top and lower-left paragraphs make life difficult for the eyes

When reading lines of text that are overly short or long, the reader will become weary fairly quickly. As the eye travels along long lines, getting down to the correct next line becomes difficult.

On the other hand, reading short lines of text creates quick, jumpy, eye movements that tire and annoy the reader. As a rule of thumb, aim for lines that are around 10—12 words long.

Watch your leading

Lines of type with too little space between them slow the reading process. The eye is forced to take in several lines at once. By adding a sensible amount of space between lines, readability can be improved.

Use flush left, ragged right

graphic showing type set as flush left, ragged right

Flush left, ragged right

Other methods of paragraph arrangement certainly have their uses at times. However, we learn to read with text that is set to an invisible left edge and with a ragged right side. The western language reads along lines from left to right, and so this makes perfect sense. Because of this, setting your type in that way is always going to be more legible.

graphic showing centred type

Centered text is the enemy of legibility

Many people make the mistake of centering paragraphs to add interest to their work. In fact, not only is this harder to read (with no hard edge on the left) but is also, with its symmetry, the most passive and boring layout for typography possible.

Can you imagine reading a 400–page novel that was set ragged left, flush–right? Believe me, you would give up on that book fairly quickly — the ease of moving from line to line is very much compromised when they begin at different points on the page.

Avoid widows and orphans

typographic widow


A widow is a single paragraph–ending line, that occurs at the beginning of the next page or column, separated from the rest of the text its related to.

typographic orphan


An orphan is a single paragraph–beginning line that occurs on the page or column before its related text; or a word that appears by itself at the end of a paragraph.

Both of these should be avoided wherever possible, for they create spotty pages and break concentration in reading. Using hyphenation, line breaks or adjusting the tracking of your text are possible solutions to these problems; although most modern desktop publishing applications have an option to automatically avoid them altogether.

Always align to the baseline

a poor example of signage typography

You can see why the decision was made to stack this type. But is this the most legible solution?

Letters are designed to exist alongside one another on an invisible baseline. When they are led from this orientation, they appear to be out of control and reading them becomes very difficult. Never stack letters upon each other.