Free YAML to JSON Converter
Convert YAML to JSON (or JSON to YAML) in one click, entirely in your browser. YAML is the most common config format for Docker, Kubernetes, GitHub Actions, and Ansible — while JSON is what most APIs and programs consume. This converter handles nested mappings, lists, inline arrays, quoted strings, booleans, numbers, and comments, and pretty-prints the output so you can paste it straight into code.
YAML vs JSON: what's the difference?
YAML is a human-friendly superset of JSON: it uses indentation instead of braces, allows comments, and supports unquoted strings and multi-line blocks. JSON is stricter and machine-friendly — every key must be quoted and every value typed. Any valid JSON is valid YAML, but not the reverse, which is why converting between them is a daily task for DevOps and backend developers.
YAML to JSON FAQ
Is my data sent to a server? No — conversion runs locally in your browser. Why did my YAML fail to parse? Check indentation (use spaces, not tabs) and that lists are aligned under the same key. Are YAML anchors/aliases supported? This free converter handles the standard subset; anchors are not evaluated. Does JSON come out minified? No — output is pretty-printed with 2-space indentation for readability.