Choose text from your device or use the available text controls.
Files stay on your device
Case Converter
Change text to uppercase, lowercase, title case or sentence case with locale-aware casing.
Private browser workspaceInput: Text → Output: Text
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Your file never leaves this browser
Processing happens locally using browser APIs and on-device code. Closing this tab clears the working data.
How it works01 02 03
Done in three simple steps
Choose the available options and process the input locally.
Review the result, then download it to your device.
Frequently asked questions
Does title case apply editorial style rules?+
No. Title mode capitalizes every word. Sentence and title modes use predictable text rules rather than guessing proper names, acronyms or a publication’s style guide.
Are my files uploaded?+
No. Processing happens on this device. The tool may download its own code, but source files and output are not sent to a processing server.