JSON ↔ YAML Converter
Convert JSON to YAML, or YAML back to JSON, with one click. Preserves data types (numbers, booleans, null, arrays, objects). Conversion runs entirely in your browser using js-yaml — no data upload.
JSON ↔ YAML Converter — Online Format Translator
ToolOverview
JSON and YAML are the two dominant data-serialization formats. JSON is concise and machine-friendly; YAML is human-readable and supports comments — used heavily in Kubernetes, Docker Compose, CI/CD, and Ansible. This tool converts both directions, preserving nested structures, arrays, and booleans.
How to use
- Pick mode: JSON → YAML or YAML → JSON
- Paste your input
- Result appears on the right; copy or download
Use Cases
- Converting K8s manifests from JSON (kubectl get -o json) to editable YAML
- Turning package.json into a .yaml for CI consumption
- Learning the differences by side-by-side conversion
- Converting YAML back to JSON for API submission
FAQ
Q: YAML supports comments but JSON doesn't — what happens?
A: Comments are dropped on conversion. Keep the original YAML file as source of truth.
Q: Quote style differences?
A: Default is block style (no quotes). Use quoted strings explicitly when needed.
Q: Big files?
A: Bounded by browser memory; up to ~1 MB is smooth.
Tips & Related Tools
JSON requires double quotes. YAML is flexible but indentation-sensitive.
In YAML, yes/no/on/off are booleans — quote explicitly if you need strings.
Schema validation: YAML via js-yaml, JSON via AJV.
Common Use Cases
Use the JSON ↔ YAML Converter online for these scenarios:
- Daily work:: Bookmark this tool, use directly when needed, save time
- Easy to use:: Runs in web browser, no software installation needed
- Data safety:: All processing in your local browser, files not uploaded to server
- Free to use:: Completely free, no signup, no watermarks, no feature limits
- Cross-platform: Mac, Windows, Linux, mobile all work, just need a browser
Frequently Asked Questions
Here are the most common questions:
Q: Is this tool safe?
A: Yes. 100% client-side, data not uploaded, disappears when page closes.
Q: Do I need to register?
A: No. No login, no account, use directly.
Q: Are there usage limits?
A: No. Completely free, unlimited use.
Q: Does it support mobile?
A: Yes. All modern browsers work, including mobile.
Related Tutorials
Want to learn more about JSON ↔ YAML Converter? Check out these tutorials: