Writing · Browser processing

Private Online Case Converter

Change letter case instantly without uploading your text. Title and sentence modes use practical rules suitable for everyday editing.

Case Converter processing workspace running locally in a browser
Case ConverterRuns on this device

The workspace does not submit its text or selected local file to TXTNimble. Refreshing or closing the page clears the current result.

Common questions

How this tool behaves

Does title case follow one style guide?

It uses a practical general rule and keeps short joining words lowercase except at boundaries.

What is toggle case?

Uppercase letters become lowercase and lowercase letters become uppercase.

Does it support Unicode?

Modern browsers handle many scripts, but case rules vary by language.

Practical examples

When to use it

Heading list

Convert headings into consistent title case.

Accidental Caps Lock

Convert an all-uppercase paragraph to sentence case.

Continue the workflow

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