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YAML Formatter

XML & YAML Tools

Parse and re-serialise YAML with consistent indentation and validation.

Input

Result

How to use

How to format YAML

Paste YAML and press Format. The document is parsed and written back with standard indentation.

  1. Paste YAML into the input editor.
  2. Press Format.
  3. Copy the normalised document.

Frequently asked questions

Are anchors and aliases supported?

Anchors and aliases are resolved on parse, so the formatted output contains the expanded values.

Will formatting remove comments?

Comments are not preserved because the formatter works from the parsed data structure.

Related tools

YAML Validator Validate YAML syntax and get a precise error when indentation or structure is wrong. YAML to JSON Convert YAML documents into JSON for APIs and JavaScript applications. JSON to YAML Convert JSON to clean YAML for configuration files and Kubernetes manifests. XML Formatter Pretty print XML with consistent indentation and optional attribute wrapping. XML Validator Check that an XML document is well formed and see a clear error description. XML Minifier Remove whitespace between XML tags to produce the smallest payload.