Pretty Print Code Online

Beautify JSON, JavaScript, HTML, and CSS

Paste raw code and instantly beautify or minify supported formats with a clean preview and basic syntax highlighting.

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Format Tools
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Pretty Print Code Online Free | JSON, JavaScript, HTML, CSS
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JSON to Table
Paste JSON and instantly generate a structured HTML table with basic nested object flattening and a scrollable preview.
CSV to JSON
Paste CSV text or upload a file to convert rows into a clean JSON array with header detection and quoted-field support.
Array to JSON
Convert array-style input, comma-separated values, or line-based lists into valid JSON with instant validation.
Pretty Print Code
Paste raw code and instantly beautify or minify supported formats with a clean preview and basic syntax highlighting.
Input

Raw Code

Beautifies or minifies JSON, JavaScript, HTML, and CSS with a lightweight highlighted preview.
Output

Ready for conversion

Enter data to see the converted result.
Example output
{
  "name": "Format Tools",
  "items": [
    {
      "type": "json",
      "active": true
    }
  ]
}

About Pretty Print Code

The pretty print code tool is built for debugging, code reviews, and documentation when you need readable formatted snippets without calling an API.

Frequently Asked Questions

This tool supports JSON, JavaScript, HTML, and CSS with basic beautify and minify behavior.

Yes. The output preview includes lightweight client-side syntax highlighting for easier scanning.