YAML Key Sorter
The YAML Sort tool alphabetically orders all keys in your YAML documents at every nesting level. Consistent key ordering is a best practice for configuration files — it makes diffs cleaner, code reviews easier, and merge conflicts less frequent. Many teams enforce sorted keys in their YAML files via linting rules, and this tool lets you fix ordering instantly.
The sorter parses your YAML, recursively sorts all object keys using locale-aware alphabetical comparison, and re-serialises the result with clean 2-space indentation. Arrays are preserved in their original order (only object keys are sorted), and all data types, comments structure, and values remain unchanged.
This is particularly valuable for large Kubernetes manifests, Helm values files, CI/CD pipeline definitions, and application configuration where dozens of keys can easily drift out of order as multiple developers contribute changes over time.
- Sorts keys alphabetically at all nesting levels
- Preserves array order (only object keys are sorted)
- Clean 2-space indentation in output
- Handles deeply nested YAML structures
- Download sorted YAML file
- Copy result to clipboard with one click
Example Input
server: port: 8080 host: localhost app: version: 1.0 name: my-app
Example Output
app: name: my-app version: 1.0 server: host: localhost port: 8080