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YAML Formatter — Free Code Beautifier Online

YAML Formatter reformats messy YAML into clean, properly indented code that is actually readable. Covers YAML prettifier and cleaner. It runs entirely in your browser, so nothing you enter is uploaded to a server. Free to use, with no signup and no watermark.

How to use YAML Formatter

1. Paste your YAML.
2. Adjust the indentation setting if needed.
3. Copy the formatted output.

Frequently asked questions

Does formatting change what my code does?

No. Only whitespace and layout change — the meaning and behaviour stay exactly the same.

Is my code sent to a server?

No. Formatting happens entirely in your browser, so private code is safe to paste.

What if my input has a syntax error?

You get an error pointing at the problem area, which makes this a fast way to find an unbalanced bracket or quote.

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