Whether you choose uppercase or lowercase letters has a strong effect on the legibility of your text. Indeed, words set in all uppercase letters should generally be avoided — except perhaps for short headings — because they are difficult to scan.

What is title case in typography?

Title case means that the first letter of each word is capitalized, except for certain small words, such as articles and short prepositions.

Do you capitalize objects?

In general, you should capitalize the first word, all nouns, all verbs (even short ones, like is), all adjectives, and all proper nouns. That means you should lowercase articles, conjunctions, and prepositions—however, some style guides say to capitalize conjunctions and prepositions that are longer than five letters.