About Case Converter
Product Documentation, Architecture & Offline Privacy Verification
What It Does
Instantly change text to UPPERCASE, lowercase, Title Case, Sentence case, and more locally in your browser.
How It Works
Key Features
- Multiple Conversion Modes: Easily switch between UPPERCASE, lowercase, Title Case, Sentence case, and more.
- 100% Client-Side Privacy: No database. No backend processing. Your text never leaves your local device.
- Whitespace Preserving: Keeps all your original formatting, including multiple spaces, tabs, and paragraph breaks intact.
Limitations & Compatibility
Frequently Asked Questions
Does this tool support other languages?
Yes! The Case Converter uses safe Unicode transformation methods. It correctly handles accented characters, Cyrillic, Greek, and safely ignores characters that don't have cases (like Chinese, Japanese, and emojis).
What is the difference between Title Case and Capitalized Case?
Capitalized Case simply capitalizes the first letter of every single word. Title Case is smarter—it capitalizes the first letter of words, but leaves "minor" words (like "a", "an", "the", "and", "in", "of") lowercase unless they start a sentence.
Is my data secure?
Absolutely. All text processing is executed completely locally within your web browser. We do not store, upload, or transmit your typed text to any server.
Ready to use Case Converter?
100% private, instant offline processing directly in your browser with zero data retention.
