Developer Tools
YAML Formatter & Validator
Validate and format YAML or convert YAML data into readable JSON.
Formatted output
How to use
Parse YAML configuration with a standards-focused parser, display syntax errors, normalize indentation, and convert valid data to JSON.
- Paste a YAML configuration, manifest, or data document.
- Format the YAML or convert its data into JSON.
- Review syntax errors and copy the normalized result.
Best for
- CI configuration checks
- Kubernetes manifest cleanup
- YAML to JSON conversion
Why the result matters
- The formatter parses and writes the data again, which produces consistent indentation and normalized syntax.
- Comments may not survive data conversion because the output is generated from the parsed value.
Example inputs
- Format a workflow file
- Validate indentation
- Convert configuration data to JSON
FAQ
Does it validate YAML?
Yes. Invalid syntax is reported before any formatted output is produced.
Can it convert YAML to JSON?
Yes. Valid YAML data can be exported as indented JSON.
Are YAML comments preserved?
Not always. Formatting is based on the parsed data value, so comments may be removed.
Does my configuration leave the browser?
No. Parsing and conversion run locally.