Creating effective signage is about more than fitting words onto a panel. Good content helps visitors understand a place quickly, encourages curiosity and leaves a lasting impression.
These guidelines apply to interpretive panels and displays, information signs and posters. For simplicity, they are collectively referred to here as signs.
Not every sign serves the same purpose. Some convey detailed information, while others spark interest or reinforce a single idea. Matching the amount of content to the sign’s purpose is one of the most important decisions in interpretive design.
Match the content to the sign
Signs generally fall into three broad categories:
Information signs contain more detailed content that visitors expect or need to read.
Interpretive signs balance stories and information with photographs, illustrations and other graphics.
Impact signs use minimal content, relying on a strong message and powerful visuals to attract attention or communicate one memorable idea.
These categories provide a useful starting point rather than a fixed formula. The right approach depends on what visitors need to understand, where they will encounter the sign and how much time they are likely to spend reading it.
Often, less is more. A carefully selected photograph or illustration can communicate more clearly and memorably than another paragraph of text.
Balance text, graphics and white space
A useful guide for interpretive panels and displays is:
- One-third text
- One-third graphics
- One-third clear space
White space is not empty space. It improves readability, establishes a visual hierarchy and gives visitors time to absorb the information. Without it, even well-written content can feel difficult or uninviting.
The balance should always reflect the purpose of the sign, the amount of imagery and the conditions in which visitors will view it.
Use captions to reduce visual clutter
Captions provide an effective way to move supporting information out of the main text.
Visitors naturally move closer to examine photographs and illustrations, so captions can usually be set in a slightly smaller type size without affecting readability. They also place information beside the relevant image, creating a clearer and more logical reading sequence.
A good caption should add meaning rather than simply identify what the visitor can already see.
Use headings and subheadings
Avoid presenting visitors with one long block of text.
Divide content into short sections of one or two paragraphs, each introduced by a meaningful heading or subheading. These create visual anchor points, helping visitors scan the sign and choose the information that interests them.
A clear structure also ensures that the main messages remain visible, even when visitors spend only a short time reading.
Suggested word counts
The following word counts provide a practical guide for different sign sizes.
| Sign area | Suggested word count |
| Up to 0.15 m² | 50–70 words |
| Up to 0.20 m² | 70–100 words |
| Up to 0.30 m² | 100–130 words |
| Up to 0.40 m² | 150–200 words |
| Up to 0.60 m² | 200–250 words |
| Up to 0.80 m² | 250–300 words |
| Up to 1.00 m² | 300–400 words |
These figures are guides rather than fixed rules. The appropriate word count will depend on the audience, the complexity of the story, viewing distance and the balance between text, graphics and white space.
The aim is not to fill the available area. It is to give visitors enough information to understand why the subject matters, presented in a form they can comfortably read and remember.
