Randomize Text Case

Alternating case (also called 'SpongeBob mocking text') alternates between lowercase and uppercase letters in a pattern like 'aLtErNaTiNg CaSe'. It's commonly used online to convey sarcasm or mockery.

There are 3 modes: 1) Random per Letter - each letter is randomly upper or lowercase; 2) Alternating Case - creates the mocking text pattern (aLtErNaTiNg); 3) Random per Word - each entire word is randomly all caps or all lowercase.

Random case helps test if systems are properly case-insensitive. For example, 'Email', 'EMAIL', and 'eMaIl' should all be treated the same in most systems. This tool generates test data to verify case-handling.

Yes! The tool works with any letters that have uppercase and lowercase variants, including accented characters (é/É, ñ/Ñ) and other alphabets that support case (Greek, Cyrillic, etc.).

No. Only letters are affected by case randomization. Numbers, punctuation, spaces, and symbols remain exactly as they appear in the original text.

Yes! The 'Alternating Case' mode creates a consistent pattern starting with lowercase. Unlike 'Random per Letter' which gives different results each time, alternating mode always produces the same pattern for the same input.

In 'Random per Word' mode, each word is treated as a unit and randomly converted to either ALL UPPERCASE or all lowercase. This creates a chaotic but word-structured appearance, useful for visual effects.

Yes! Click the Upload button to load .txt files. Perfect for batch converting text, creating test data variations, or applying effects to longer documents.

Yes! Click the TXT button to download your randomized text as a plain text file. The filename includes a timestamp for easy organization.

100% yes. All processing happens locally in your browser using JavaScript. Your text never leaves your device, and nothing is sent to our servers. Completely private and secure.