UX Design
Sentence Case
Sentence case means capitalizing only the first word and any proper nouns, the way you would write an ordinary sentence. "Save changes" rather than "Save Changes."
Why it matters
It is the friendlier, more readable default for interface text, and it scans faster than capitalizing every word. Consistency in casing also makes a product feel considered rather than thrown together.
In depth
Title Case On Everything reads like a legal document and slows the eye down, while sentence case feels closer to natural speech. The main exceptions are true proper nouns and product names, which keep their capitals. Pick one casing style and apply it everywhere, since mixed casing is one of the quickest ways to make an interface look unpolished.
Real-world example
Most modern interfaces, including Google and Apple's, label buttons and menus like "Add to cart" or "Turn on notifications" instead of "Add To Cart."
Related terms