Convert JSON data to YAML format instantly
Paste your JSON data in the left panel and click Convert. The YAML output appears instantly on the right. Everything runs in your browser — no data is sent to any server.
YAML is more human-readable than JSON and is widely used in configuration files (Docker Compose, Kubernetes, CI/CD pipelines, Ansible). Converting JSON to YAML makes your configs cleaner and easier to maintain.
YAML (YAML Ain't Markup Language) is a human-readable data format popular for configuration files — Docker Compose, Kubernetes manifests, GitHub Actions, Ansible playbooks, and many more. While JSON and YAML represent the same data structures, YAML is significantly more readable: no brackets, no commas, no quoted keys, and support for comments. Converting JSON to YAML is common when migrating configurations, writing documentation, or when you prefer YAML's cleaner syntax. This converter produces clean YAML output that follows best practices: consistent indentation, proper string quoting only when necessary, and compact representations for simple values.
YAML is more human-readable: no brackets/braces, no commas, supports comments, and allows multi-line strings. JSON is better for machine parsing and data exchange. YAML is preferred for configuration files humans edit; JSON for API responses.
Yes — valid JSON is valid YAML (since YAML 1.2). A JSON file can be used directly as YAML. The reverse isn't true — YAML features like comments, anchors, and bare strings aren't valid JSON.
Configuration files are frequently edited by humans. YAML's readability makes it easier to write, review, and debug infrastructure configuration. Comments are essential for documenting why specific settings exist.
Indentation must use spaces, not tabs. 'yes/no/on/off' are parsed as booleans (quote them as strings). Norway's country code 'NO' becomes false. Trailing spaces can cause issues. Always validate YAML after manual editing.
Yes — the conversion is bidirectional since both represent the same data model. YAML comments will be lost in conversion since JSON doesn't support comments.