English Case Converter with Spell Check — Tutorial

Features

• Five modes: Title Case, Sentence case, UPPERCASE, lowercase, Capitalize Words.
• Space cleanup: Merges consecutive spaces and trims before conversion.
• Spell check: Loads nspell (MIT) + dictionary-en on first convert; red underlines for misspellings; conversion still runs.
• Auto-copy: Shows the result below and tries to copy it to the clipboard.

Use Cases

• Headlines: Turn hello world from our team into Title Case Hello World From Our Team.

FAQ

What limitations should I know?

Digits-only, CJK-only, or punctuation-only input cannot convert—you’ll see “Nothing to convert”.

When might it fail?

Recommended max 500 characters per input.

What else should I watch for?

Review output when numbers, acronyms, or non-Latin characters are mixed in.

Any other important notes?

Refreshing the page clears input and results.