YAML Validator

Validate YAML and convert to JSON

YAML

✓ Valid YAML

Parsed (JSON)

{
  "name": "Mono Hub",
  "version": "1.0.0",
  "services": [
    "api",
    "web"
  ],
  "config": {
    "port": 3000,
    "debug": true,
    "hosts": [
      "localhost",
      "127.0.0.1"
    ]
  }
}

How to use

Paste or type your YAML into the editor area.
A green alert appears immediately if the YAML is valid; a red alert shows the parse error with line and column number if not.
When valid, read the parsed output rendered as formatted JSON to verify the structure was interpreted correctly.
Copy the JSON output with the copy button if you need it in that format.

Examples

Pasting a valid Kubernetes manifest shows a green "Valid YAML" banner and the equivalent JSON tree below.
A missing colon after a key produces an error like "unexpected token at line 3, column 8" pinpointing exactly where parsing failed.