Convert YAML to JSON

To convert YAML to JSON: add the .yaml or .yml file below and click Convert. Your browser parses it and downloads a formatted .json file immediately.

Drop your YAML file here

or browse your device

Your file is processed on your device and never uploaded anywhere.

    Turn YAML into JSON for APIs, JavaScript, or any tool that expects JSON. This tool parses your YAML and outputs clean, valid JSON right in your browser, with nothing uploaded.

    How do I convert YAML to JSON?

    1. Add your YAML file using the box above — drag and drop, or tap to browse.
    2. Press Convert to JSON. The file is processed right in your browser.
    3. Download your new JSON file. Nothing is ever uploaded.

    Good to know

    • The parser follows the YAML 1.1/1.2 spec, handling nested maps, lists, and multi-line strings.
    • Output is pretty-printed JSON with two-space indentation, ready to drop into code or an API request.
    • If the YAML has a syntax error, you get a clear message pointing at the problem instead of a silent failure.

    Frequently asked questions

    How do I convert YAML to JSON?

    Add your .yaml or .yml file above and click Convert. Your browser parses it and downloads a .json file.

    What if my YAML has an error?

    You’ll see a plain-language error describing what went wrong, so you can fix the YAML and try again.

    Is my file uploaded?

    No. Parsing happens entirely in your browser.

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    Last updated: 2026-08-30