When to use each case style
- Sentence case — standard prose, chat messages, most body text.
- Title Case — headlines, article titles, book and movie titles, where style guides expect capitalized major words.
- UPPERCASE — headers, warnings, acronyms, or emphasis in short bursts (used sparingly — it reads as shouting in normal prose).
- lowercase — usernames, slugs, casual or stylized social copy.
Title Case is trickier than it looks
Proper title case doesn't just capitalize every word — style guides (AP, Chicago, MLA) agree that short connector words like "a," "the," "of," and "and" stay lowercase unless they're the first or last word of the title. "The Lord of the Rings" is correct; "The Lord Of The Rings" is not, by most editorial standards. This tool follows that headline-style convention rather than naively capitalizing everything.
A quick example
The sentence the quick brown fox jumps over the lazy dog becomes The Quick Brown Fox Jumps Over the Lazy Dog in Title Case — note "over" and "the" stay lowercase mid-sentence.