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HTML Formatter

Format and indent HTML markup for readability. Clean up minified or messy HTML code.

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Indenting HTML for inspection

The formatter groups markup into tokens and indents nested elements. It keeps script, style, pre and textarea blocks together.

Output behavior and limits

This is a lightweight formatter, not an HTML parser, validator or sanitizer. Added whitespace can change inline layout; never treat the output as safe untrusted HTML.

Use a small fragment such as <div><p>Hello</p></div>, then compare the page in a browser. Keep the source when whitespace or a template language has special meaning.

Before replacing your original

  • Processing runs locally in this browser; keep a copy of the source input.

Processing details

Runs in your browser. File handling policy

Implementation and guidance reviewed .

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