YAML to JSON Converter

Why Convert YAML to JSON?

YAML is popular for configuration files — Docker Compose, Kubernetes manifests, GitHub Actions workflows, Ansible playbooks — because its indentation-based syntax is clean and easy to write by hand. JSON, on the other hand, is required by most REST APIs, JavaScript applications, databases and data-processing libraries. This converter bridges the gap: paste any valid YAML and get a standards-compliant, pretty-printed JSON document you can use immediately in your code or API call.

YAML vs JSON — Key Differences

Common Conversion Scenarios

• Kubernetes to API — extract values from a manifest to send as a JSON API request body.
• CI/CD debugging — convert a GitHub Actions or GitLab CI workflow to JSON for parsing with jq.
• Config to database — store YAML-defined configuration as a JSON column in PostgreSQL or MongoDB.
• Helm values — convert values.yaml to JSON for use with Helm's --set-json flag.

YAML Formatting Rules

YAML is whitespace-sensitive — always use spaces, never tabs. Use consistent 2-space indentation throughout. Each key-value pair uses a colon followed by a space (key: value). Comments beginning with # are stripped during conversion since JSON has no comment syntax.

Troubleshooting YAML Parse Errors

The most common cause of a YAML parse failure is mixed tabs and spaces — text editors set to use hard tabs will silently insert tab characters that YAML treats as invalid indentation. If the converter reports a parse error, paste your YAML into a tab-to-space converter first, then retry. Other frequent issues include unquoted colons inside string values (wrap in double quotes: message: "Error: not found") and multi-line strings that are not properly escaped — use the | (literal block) or > (folded block) indicator to preserve line breaks. To convert the resulting JSON back to YAML later, use the JSON to YAML Converter.