What does formatting do?

It parses the YAML and re-serializes it with consistent 2-space indentation. This fixes inconsistent spacing and normalizes the structure.

Does it validate YAML?

Yes. If the YAML has syntax errors, a clear error message is shown.

No. Formatting runs entirely in your browser.

Format, beautify and validate YAML online. Fix indentation and check syntax. Free online tool.

Input YAML

Formatted YAML

Paste messy YAML and get cleanly formatted output with consistent indentation. Also validates syntax.

Consistent indentation

Re-formats with clean 2-space indentation.

Syntax validation

Shows clear errors for invalid YAML.

Private

Runs in your browser.