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Pretty-Printing and Minifying HTML, CSS, and JS Online

Updated October 9, 2025 ยท ViewSource.net Guides

Minified code is great for performance โ€” terrible for reading. Use beautify to expand indentation and line breaks so humans can scan, search, and understand the structure quickly.

Why beautify?

  • Speed up debugging by revealing structure and nesting.
  • Search for elements, IDs, or inline scripts more easily.
  • Teach and learn from real-world examples without the noise.

How the toggle works

  1. Paste a URL and fetch the source.
  2. Use the Formatted tab to format HTML/CSS/JS.
  3. Switch back to Raw at any time to see the original bytes.

Copy and download

Once formatted, copy all with one click, or download as .html / .txt for later use.

When to use Raw vs Formatted

Use Raw when you need to see exactly what the server sent, byte-for-byte. Use Formatted when you need to read and understand the code structure with proper indentation.

Format some source โ†’