JSON ⇄ YAML Converter is a 100% free, browser-based utility that enables you to convert json to yaml and yaml to json. Unlike traditional cloud converters, all processing executes locally on your device with zero server uploads, delivering immediate results and ironclad data privacy.
About the JSON ⇄ YAML Converter
YAML and JSON describe the same data structures, but YAML is easier for people to read and write while JSON is what most APIs expect. This converter translates between them in both directions as you type, so you can move configuration between Kubernetes, Docker Compose, GitHub Actions, OpenAPI and JavaScript code.
If the input has a syntax error, the message shows where it is, including the line number for YAML.
How to use the JSON ⇄ YAML Converter
- Choose the direction: JSON → YAML or YAML → JSON.
- Paste your document into the input.
- Copy or download the converted output.
Features
- Two-way conversion
- Live as you type
- Indentation control
- Line-numbered errors
Why Choose In-Browser JSON ⇄ YAML Converter vs Cloud Converters?
| Feature | Toolora (In-Browser) | Traditional Cloud Tools |
|---|---|---|
| Data Privacy | 100% Private (Files stay on device) | Uploaded to remote servers |
| File Size Limits | Unlimited (Limited only by your RAM) | Restricted (e.g. 10MB–50MB caps) |
| Processing Speed | Instant (Zero upload/download delay) | Slow upload & queue waiting |
| Ads & Popups | Clean, distraction-free | Heavy banner & interstitial ads |
Frequently asked questions
Are YAML comments preserved?
No. JSON has no comments, so comments are dropped when converting YAML to JSON. Converting JSON to YAML produces plain YAML without comments.
Can it handle multiple YAML documents?
Files with several documents separated by --- are converted into a JSON array with one element per document.
Is YAML a superset of JSON?
Practically yes: valid JSON is almost always valid YAML 1.2, which is why you can paste JSON into the YAML side and it will parse.