Convert between YAML and JSON instantly. Paste your YAML or JSON on the left, pick a direction, and get the converted output on the right. Validates input and shows clear error messages. All processing happens in your browser.
When to use YAML vs JSON
YAML
- Kubernetes manifests
- Docker Compose files
- GitHub Actions workflows
- Ansible playbooks
- Human-edited configuration
JSON
- API requests and responses
- Package manifests (package.json)
- Terraform state files
- Machine-generated config
- Browser localStorage
Key differences
| Feature | YAML | JSON |
|---|---|---|
| Readability | Indentation-based, very readable | Bracket-based, more verbose |
| Comments | Supported (# comment) |
Not supported |
| Data types | Auto-detects dates, booleans | Strings, numbers, booleans, null |
| Multi-line strings | Supported (| and >) |
Escape sequences only |
| Parsing speed | Slower | Native in all languages |