JSON to YAML Converter
Convert JSON data into clean, readable YAML, with live validation and clear error messages for invalid input.
JSON input
YAML output
Recommended Settings
Pro Tips
- •Conversion happens live as you type, with JSON syntax errors shown immediately
- •Long lines are never force-wrapped, so multi-line strings and long values stay intact and readable in the YAML output
- •YAML's cleaner syntax (no braces, brackets, or trailing commas) is often preferred for hand-edited configuration files like Kubernetes manifests
- •Nested objects and arrays are converted to YAML's indentation-based structure and dash-prefixed list items respectively
Most Popular
Most developers convert a JSON API response or config object into YAML for a Kubernetes manifest or CI/CD pipeline file
When to Use This Tool
Convert a JSON object into the YAML format required by Kubernetes or Docker Compose.
Turn dense JSON into YAML's cleaner, more readable indentation-based format.
Convert a JSON API response into YAML for documentation or a YAML-based config system.
Convert JSON-defined pipeline steps into the YAML format most CI/CD systems expect.
How It Works
Parse your JSON text into a JavaScript object using the standard JSON parser
Serialize that object into YAML syntax using a standard YAML dumper
Display any parsing errors immediately if the JSON is malformed
100% Private
Files never leave your device. All processing happens locally in your browser.
Lightning Fast
Powered by Client-side JSON parsing and YAML serialization (js-yaml) for optimal performance on modern browsers.
Open Source
Built with verified, open-source libraries. Fully transparent.
Frequently Asked Questions
Why is YAML often used instead of JSON for config files?
YAML is generally easier for humans to read and edit by hand since it avoids braces, brackets, and quotation marks for most values, and supports comments, which JSON doesn't.
Does the output preserve my JSON's key order?
Yes, the YAML output preserves the same key order as your original JSON object.
Why am I getting a JSON parse error?
Check for common JSON mistakes like trailing commas, single quotes instead of double quotes, or missing closing braces and brackets.
Is my data sent to a server?
No. All parsing and conversion happens locally in your browser.