JSON to YAML Converter
Convert JSON to clean, indented YAML — runs entirely in your browser
Paste into the left panel, upload a file, or click Sample to try it out · use Swap to reverse the conversion
Paste any valid JSON object or array and get clean, correctly indented YAML back in milliseconds. Supports deeply nested structures, arrays, and all JSON data types. Conversion runs entirely in your browser — your data never leaves your device.
How to Convert JSON to YAML
Paste your JSON and download YAML in seconds — no server involved.
Paste or upload your JSON
Type or paste a JSON object into the input, or upload a .json file directly. Invalid JSON is flagged immediately with an error marker.
Instant YAML output
The YAML equivalent appears in the output panel in real time as you type. Indentation, quoting, and type coercions are handled automatically.
Copy or download
Click Copy to clipboard or Download as .yaml to save the result. Use it directly in Kubernetes manifests, GitHub Actions, or any YAML-based configuration.
Features
Runs entirely in your browser — your JSON never leaves your device
Live conversion updates as you type — no submit button needed
Handles deeply nested objects, arrays, and all JSON scalar types
Automatic quoting of YAML special characters and reserved words
Correct 2-space indentation — ready for Kubernetes, GitHub Actions, and CI/CD pipelines
Upload a .json file directly for conversion
Download the result as a .yaml file instantly
Swap button converts YAML back to JSON in the same tool
Free, no sign-up, no file size limits
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Frequently Asked Questions
Does my JSON get uploaded to a server?
No. Conversion runs entirely in your browser using JavaScript. Your data never leaves your device.
What JSON types does the converter handle?
All standard JSON types: objects, arrays, strings, numbers, booleans (true/false), and null. Nested structures of arbitrary depth are supported.
Why are some string values quoted in the YAML output?
YAML has reserved words and special characters that would be misinterpreted if left unquoted — such as true, false, null, yes, no, and values starting with a colon. The converter quotes these automatically.
Can I use this for Kubernetes manifests or GitHub Actions?
Yes. The converter outputs standard YAML with 2-space indentation, compatible with Kubernetes, GitHub Actions, Docker Compose, Ansible, and most CI/CD tools.
Can I convert YAML back to JSON in the same tool?
Yes. Click the Swap button — the same tool handles both JSON to YAML and YAML to JSON.
Is there a file size limit?
No hard limit. The only practical constraint is your browser's available memory.