3. Capital letters - Advisory - eLaHub

Use upper and lower case letters, according to the spelling rules of the language you are using.

What can I do?

Make sure you only use capital letters according to English spelling rules i.e.
This is very common in eLearning resources, especially in titles.


  • GOV.UK explains that by 9 years old, most people have learnt to read the 5000 common words they use most they then stop reading these words, and start recognising their shape, which allows them to read much faster.
  • When we use all uppercase letters, we change the shape of the words and make it more difficult for our learners to read them.
  • Research shows that by using all uppercase letters we slow down all our readers by 13-18%, but learners with a cognitive impairment, or second language learners even more.
  • Dyslexic learners find it particularly difficult to read all uppercase letters.

Many designers use all capital letters for the visible label on buttons e.g. SUBMIT. Although button labels usually only contain a few words, and are therefore not as difficult to read as a full title or sentence, it is still more inclusive to use upper and lower case letters.

eLaHub example

The introduction page of an eLearning module for a systems training course. There is overuse of all uppercase letters in the titles and a warning sentence. This makes the page more difficult to read.

Uppercase letters overused in an introduction page

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