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Validate and convert YAML online
Check YAML for syntax errors, beautify it, and convert freely between YAML and JSON. Useful for debugging Kubernetes manifests, CI config files, Docker Compose files, and any other YAML-based configuration.
Frequently Asked Questions
- What does this tool check for?
- It parses your YAML and reports whether it is syntactically valid, including a descriptive error with the problem location if it is not — useful for catching indentation mistakes and bad anchors/references.
- Can I convert YAML to JSON and back?
- Yes. Use "YAML to JSON" or "JSON to YAML" to convert between the two formats, for example when migrating configuration files between tools that expect different formats.
- What YAML features are supported?
- Standard YAML 1.1 syntax is supported, including nested mappings, sequences, anchors/aliases, and scalars — parsed using a safe loader so no arbitrary code execution is possible.
- Is my YAML sent to a server?
- Validation and conversion run on the Hexabench backend, but nothing is stored or logged — the content is discarded as soon as the response is returned.