YAML Formatter - Beautify YAML Online
Our YAML Formatter Tool helps you format and beautify YAML configuration files. Transform messy YAML into properly indented, readable yaml. Perfect for DevOps, configuration management, and CI/CD pipelines.
Features of YAML Formatter
- Beautify YAML instantly - Proper indentation and formatting
- Customizable indentation - Choose 2 or 4 space indentation
- Client-side processing - Your config stays private
- Sample YAML included - Test with example configuration
- Works offline - Install as PWA for offline use
What is YAML?
YAML (YAML Ain't Markup Language) is a human-readable data serialization format. It's commonly used for configuration files and data exchange where human readability is important. Docker Compose, Kubernetes, Ansible, and many other tools use YAML.
How to Format YAML
- Paste your YAML into the input area
- Or click "Load Sample" to try with example data
- Select your preferred indent size
- Click "Format YAML"
- Copy the formatted result
YAML Syntax Reference
| Element | Syntax |
|---|---|
| Key-value | key: value |
| List item | - item |
| Nested | Indentation |
| Comment | # comment |
| Multiline | ` |
FAQs About YAML Formatter
Is my YAML data secure?
Yes! All processing happens in your browser. We never see or store your data.
Does it validate YAML?
The formatter checks basic structure but is not a full validator.
What indentation should I use?
2 spaces is the YAML standard, but 4 spaces works too.
Use Cases
- Docker Compose - Format docker-compose.yml files
- Kubernetes - Clean up K8s manifests
- CI/CD - Format GitHub Actions, GitLab CI, or Jenkins pipelines
- Ansible - Format playbooks and roles
- Configuration - Any YAML config file