YAML Formatter | Beautify and Convert YAML Online
Format and validate YAML, convert to JSON, tune dump options, and browse a collapsible tree—ideal for Kubernetes-style configs and data files.
Free online YAML formatter: beautify, validate, convert to JSON, tree view & comment preservation. Perfect for Kubernetes, CI/CD configs & DevOps workflows—runs in your browser.
How to use
When to use
Clean up Kubernetes or CI YAML, sanity-check syntax, or flip YAML to JSON for tools that only accept JSON.
Workflow
- Paste YAML or upload a file; adjust indent and quoting.
- Use Format, Validate, or Convert to JSON as needed.
- Open Tree view to explore structure; expand or collapse nested blocks.
Tips
- Flow style changes how sequences and mappings render—pick what your target system expects.
- After Convert to JSON the buffer is JSON text; switch back to YAML by pasting your original file again if needed.