Developer builds in-browser text case conversion tool for local processing

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A developer has created a lightweight tool that converts text casing entirely within a web browser. The tool handles uppercase, lowercase, sentence case, title case, and toggle case transformations using JavaScript. It processes text locally, ensuring no data is sent over a network, which protects user privacy. The algorithm's time complexity scales linearly with the length of the input text. The implementation was shared in a tutorial on the DEV Community platform.

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