JSON to YAML Converter
ConvertersConvert JSON to YAML instantly in your browser. Supports nested objects, arrays, strings, numbers and booleans. Swap back to YAML→JSON in one click. 100% client-side.
JSONjson
Loading editor…
YAMLyaml
Loading editor…
Input: 206 chars
About JSON to YAML Converter
The JSON to YAML converter transforms any valid JSON document into clean, readable YAML using js-yaml — the same library used in Kubernetes tooling and major CI/CD platforms. Conversion is instant, runs in a Web Worker, and both editors remain live so you can edit either side and see the counterpart update in real time. Click the swap button to reverse the direction to YAML→JSON without losing your data.
Features
- ✓Bidirectional — edit either panel and the other updates automatically
- ✓Powered by js-yaml for standards-compliant YAML output
- ✓Swap direction to YAML→JSON with a single click
- ✓JSON input panel has interactive tree view and graph visualization
- ✓Download converted YAML as a .yaml file
- ✓Copy output to clipboard in one click
- ✓Web Worker processing — conversion never blocks the UI
- ✓Syntax-highlighted CodeMirror 6 editors for both JSON and YAML
- ✓100% client-side — your data never leaves the browser
Common Use Cases
- Converting JSON API responses to YAML for Kubernetes ConfigMaps or Helm values
- Transforming package.json or tsconfig.json into YAML for CI/CD pipeline configs
- Converting GitHub Actions input schema (JSON) to YAML workflow syntax
- Migrating JSON configuration files to YAML-based tools like Ansible or Docker Compose
- Exploring YAML representation of deeply nested JSON data structures
Frequently Asked Questions
QDoes it preserve key order?
js-yaml serialises keys in the order they appear in the parsed JavaScript object. JSON object key order follows the ES2015 specification — integer-like keys first, then insertion order — so output key order matches the input.
QHow are JSON arrays converted?
JSON arrays become YAML sequences (block-style lists with `- ` prefix for each item). Nested arrays produce correctly indented nested sequences.
QIs my data sent to a server?
No. All conversion runs in a Web Worker inside your browser. Nothing is transmitted to any server.