YAML to JSON

What this tool does

The loader uses a JSON-compatible YAML schema. That is stricter than some CLI tools and is intentional: ConvertPass will not execute YAML tags or expand arbitrary types.

How to use it

1. Paste YAML. Multi-document files become a JSON array.
2. Copy or download the JSON.
3. If parsing fails, the original YAML is not modified.

Privacy

This tool processes files and text locally in your browser. Your content is not uploaded or stored by this site.

ConvertPass does not include your input in analytics, URLs, or error reports. Encoding: UTF-8. Limit: 2 MB (2.00 MB).

Limitations

• Custom tags, Python objects, and other unsafe YAML types are not supported.
• Duplicate keys follow the loader behaviour; do not rely on duplicates.

Example

service: convertpass
local: true
ports:
  - 3000

{
  "service": "convertpass",
  "local": true,
  "ports": [
    3000
  ]
}

Troubleshooting

A country code or the word yes changed

Quote the value in YAML. This loader avoids several YAML 1.1 implicit booleans, but quoting is still the reliable fix.

FAQ

Are multiple YAML documents supported?

Yes. Documents separated by --- are returned as a JSON array in file order. A single document is returned as a JSON value, not wrapped in an array.

Why did a date stay a string?

The JSON-compatible schema does not promote timestamps to Date objects. That keeps serialisation stable.

Is YAML loaded unsafely?

No. ConvertPass does not use an unsafe schema. There is still no reason to treat untrusted YAML as executable content, and the site never renders it as HTML.

Can I convert Kubernetes manifests?

Often yes if they are ordinary mappings and lists. Custom resource tags or Helm templates are not YAML values and will fail.