YAML to JSON Converter (and JSON to YAML)

Q: How do I choose the conversion direction?

Send `yaml` to get JSON, or `json` to get YAML. To be explicit, add `to=json` or `to=yaml`.

Q: Are multi-document YAML files supported?

Yes. Documents separated by `---` are returned as an array in `json`, and `documents` gives their count.

Q: How are YAML syntax errors reported?

The response is `valid: false` with `error.message`, `error.line` and `error.column`.

Convert YAML to JSON or JSON to YAML in one endpoint, with multi-document support and syntax errors reported with line and column.

Result

Press “Run” to see the result.

Send yaml to get JSON, or json to get YAML; the direction is picked automatically and can be forced with to=json or to=yaml. YAML can also be posted as a raw text body (for example text/yaml) with to=json.

YAML to JSON returns valid, the parsed value in json and the number of documents; files with several documents separated by --- return an array. Invalid YAML returns valid: false with an error message, line and column instead of an HTTP error.

JSON to YAML accepts a JSON value or JSON string in json and returns the YAML text in yaml; indent sets the indentation (1 to 8, default 2). The request body is limited to 5 MB.

Use this in your code

curl -X POST "https://apibox.io.vn/v1/yaml" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"yaml":"name: APIBox\nversion: 1\nfeatures:\n  - html\n  - json\nenabled: true"}'

const res = await fetch('https://apibox.io.vn/v1/yaml', {
  method: 'POST',
  headers: {
    Authorization: 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "yaml": "name: APIBox\nversion: 1\nfeatures:\n  - html\n  - json\nenabled: true"
  }),
});
const data = await res.json();
console.log(data);

import requests

res = requests.post(
    "https://apibox.io.vn/v1/yaml",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={"yaml": "name: APIBox\nversion: 1\nfeatures:\n  - html\n  - json\nenabled: true"},
    timeout=30,
)
print(res.json())

<?php
$ch = curl_init('https://apibox.io.vn/v1/yaml');
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_HTTPHEADER => ['Authorization: Bearer YOUR_API_KEY', 'Content-Type: application/json'],
    CURLOPT_POSTFIELDS => '{"yaml":"name: APIBox\\nversion: 1\\nfeatures:\\n  - html\\n  - json\\nenabled: true"}',
]);
$response = curl_exec($ch);
print_r(json_decode($response, true));

API documentation → Get a free API key

FAQ

How do I choose the conversion direction?

Send yaml to get JSON, or json to get YAML. To be explicit, add to=json or to=yaml.

Are multi-document YAML files supported?

Yes. Documents separated by --- are returned as an array in json, and documents gives their count.

How are YAML syntax errors reported?

The response is valid: false with error.message, error.line and error.column.