JSON → YAML
Paste JSON data to convert it to YAML format.
About the JSON to YAML converter
This tool converts JSON data to YAML instantly. It is useful for writing configuration files for tools like Docker Compose, Kubernetes, and CI pipelines that prefer YAML.
YAML is a superset of JSON, so the conversion is lossless: structure, types, and values are preserved exactly. The conversion runs entirely in your browser, so your data is never uploaded to a server — safe for confidential datasets.
How to use it
- Paste your JSON data into the input panel.
- The converted output appears automatically.
- Review the result and adjust the input if needed.
- Copy or download the YAML output.
Frequently asked questions
Is my data uploaded anywhere?
No. The conversion happens locally in your browser; nothing is transmitted or stored.
Is there a file size limit?
No fixed limit — files of several megabytes convert in seconds since everything runs on your device.
What happens to invalid JSON input?
The tool reports a clear error instead of producing broken output, so you can fix the input and retry.
Can I convert in the other direction?
Yes — the JSON converter section includes tools for both directions between JSON, CSV, TSV, XML, and YAML.