HTML • CSS • JS

Code Formatter

Beautify HTML, CSS, and JavaScript. Proper indentation.

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Frequently Asked Questions

Which languages does this code formatter support?

This tool is designed for formatting HTML, CSS and JavaScript. Use the language dropdown above the editor to choose the correct mode.

Does formatting change how my code works?

No. The formatter only adjusts whitespace and indentation. It does not modify variable names, logic, or functionality.

Is my code uploaded or stored anywhere?

Everything runs locally in your browser. Your code is never sent to a server or stored by Smart Tool Book.