Case is metadata for search, files, and brand voice
Slug fields want lowercase. H1 headlines want Title Case. Legal disclaimers want sentence case. One textarea and four buttons cover the common transforms without opening a word processor.
Default sample: "hello world. this is a sample..." becomes "HELLO WORLD..." in uppercase, or "Hello World. This Is A Sample..." in title case.
Copy exports whatever is currently in the box after your last conversion.
Workflow with counters and dedupe tools
Check length after case changes: ALL CAPS does not add words but can affect character limits. Use the Word & Character Counter on the result.
Bulk URL lists often need lowercase hosts. Convert, then dedupe with the Duplicate Line Remover if you merged two exports.
Generated passwords should stay mixed case from the Password Generator, not run through uppercase mode.
Title vs sentence case in practice
Title Case is for nav labels and card titles where every word reads with equal weight. Sentence case is for paragraphs where only the first word and proper nouns should shout.
Converting twice (lower, then title) is a valid path to fix ALL CAPS source material from PDF copy-paste.
For campaign tracking links, lowercase UTM values match the UTM Builder default "force lowercase" toggle.
Frequently Asked Questions (FAQ)
What does each case mode do?
UPPERCASE makes every letter capital. lowercase makes every letter small. Title Case capitalizes the first letter of each word (and after spaces, hyphens, underscores, slashes). Sentence case capitalizes the first letter of the string and letters after . ! ?
Does Title Case handle acronyms?
No smart acronym detection. "api" becomes "Api" unless you fix it manually. For product names with mixed case, edit after conversion.
Can I undo a conversion?
Use Ctrl+Z in the textarea if your browser still has history. The tool replaces textarea content on each button click. Copy before converting if the original must stay untouched.
Is non-English text supported?
Unicode letters follow JavaScript toUpperCase and toLowerCase rules. Sentence case only looks for Latin . ! ? terminators.