Skip to content

YAML Formatter & Validator

Format YAML with consistent indentation, or validate that your document parses correctly. Runs in your browser.

Example

Paste compact or messy YAML, click Format to pretty-print with 2-space indent, or Validate to check for parse errors without rewriting.

FAQ

No. Parsing and formatting run entirely in your browser via js-yaml.
js-yaml supports common YAML 1.1/1.2 features. Exotic tags or custom schemas may not round-trip perfectly.

Data Transformation Tools