YAML Formatter

Format and tidy YAML online with a clean, readable structure. Paste your YAML, choose your indentation, and copy the result.

Your YAML

Indentation

Your text stays in this browser.

Formatted output

This formatter parses YAML before formatting it. Comments and some advanced YAML features may not be preserved exactly; always review the output before using it.

How to format YAML

Paste your YAML into the editor, select an indentation width, and choose Format YAML. Copy the result when you are ready to use it.

Why consistent indentation matters

YAML uses indentation to express nested mappings and lists. Keep indentation consistent and use spaces rather than tabs.

Important limitation

This formatter parses YAML before formatting. Comments and some advanced YAML features may not be preserved exactly, so review the output before using it. Use the YAML Validator to check syntax.

Example

app:
  name: demo
  enabled: true
  tags:
    - yaml
    - tools

Frequently asked questions

Is my YAML uploaded?

The tool is designed to run in your browser; do not paste sensitive data into any online tool unless you are comfortable doing so.

Does formatting validate YAML?

No. Formatting and validation are different tasks. Use the validator to check syntax.

Can I choose indentation?

Yes. Select two or four spaces before formatting.