YAML Validator / YAML Formatter
Options
Status
Idle
Documents
Drag & drop a YAML or JSON file here
Supported: .yaml, .yml, .json
Parsed structure will appear here.
What is a YAML Validator / YAML Formatter?
A YAML validator checks whether your YAML is syntactically valid and can be parsed correctly.
A YAML formatter makes YAML easier to read by applying consistent indentation and normalized structure.
How to use the YAML Validator / YAML Formatter
- Paste your YAML into the input field.
- Choose indentation size and optional key sorting.
- Click Format to pretty-print the YAML.
- Click Validate to only check syntax.
- Click Minify for compact YAML output.
Tips
- YAML is sensitive to indentation, so even small spacing issues can break parsing.
- Sorted keys can make configuration files easier to scan.
- The parsed JSON preview is useful for checking how YAML is interpreted.
- Use validation first if you only want to confirm syntax.
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YAML Validator / YAML Formatter FAQ
Can this tool convert YAML to JSON?
Yes. It can parse YAML and show the equivalent JSON structure instantly.
Can it convert JSON back to YAML?
Yes. You can paste JSON and convert it into formatted YAML.
Does it support multi-document YAML?
Yes. It supports YAML documents separated by ---.
Is my YAML stored?
No. Everything runs directly in your browser.