Skip to Content

Use lower and upper case letters appropriately

Accessibility

The use of appropriate lower and upper case letters makes text much more recognizable, legible, and accessible.

Reason

This can be seen in this image:

Two renderings of the word "square" show that in lower case the word is more "bumpy", and so easier to read.

Best practice

Use all capitalized for items such as acronyms (NATO), Abbreviations (C.B.C.), or products/services that are branded with upper case only.

Example of less accessible practices

Two paragraphs of text with sub-headings, but with one in title case while the second is in all caps for no obvious reason.

TO SOME PEOPLE WITH A LEARNING DISABILITY WHO WOULD ORDINARILY STILL FIND IT EASY TO READ A PIECE OF TEXT, IT IS CONFUSING TO HAVE CAPITAL LETTERS SUDDENLY IN THE PLACE OF SENTENCE CASE. WE DISCUSS THIS IN THE ACCESSIBILITY BANK ENTRY ABOUT… etc.

Additional benefits

What WCAG says

(Be sure to learn more about errors and alerts.)

From WCAG:

“Text in all capital letters is more difficult to read for most people, with and without disabilities.”

Learn more about WCAG says about this issue