Trying to decide between formats? Read JSON vs YAML vs XML: when to use which.
Why YAML?
YAML is JSON's quieter cousin — easier on the eyes (especially for configuration), supports comments, and is the default for tools like Kubernetes, Docker Compose, GitHub Actions, and Ansible.
Convert a JSON config to YAML for Kubernetes, Docker, or GitHub Actions
If you've prototyped a config in JSON and need to land it in a system that prefers YAML — Kubernetes manifests, docker-compose.yml, GitHub Actions workflows, Ansible playbooks — this converter gives you idiomatic YAML 1.2 in one click. Strings are only quoted when they have to be, which keeps the result close to what a human would write by hand. For the broader format tradeoffs, see JSON vs YAML vs XML.
FAQ
Will my YAML pass yamllint?
For typical data it should. We use a clean YAML 1.2 subset. Edge cases (very deeply nested arrays of mixed types, unusual Unicode) may require hand-tuning.
Does this preserve key order?
Yes — JSONYard walks keys in their original order. YAML doesn't formally guarantee order, but every common parser preserves it.
How do I convert JSON to YAML online without uploading?
This converter parses and emits everything locally in your browser. No JSON or YAML is sent to a server.