YAML Formatter
Format and validate YAML files with proper indentation. Free online YAML beautifier and syntax checker.
YAML Input
Formatted & Validated YAML
Features
Format & Beautify
Format YAML with proper indentation and spacing. Make your configuration files readable and maintainable.
Syntax Validation
Instantly validate YAML syntax. Catch errors before they cause issues in your applications.
Multiple Options
Customize indentation, quote style, and array formatting. Match your project's style guide.
Easy Sharing
Copy formatted YAML or download as a file. Share your configurations easily with your team.
How to Use
Paste your YAML content or upload a file
Select your formatting preferences
Click "Format" to beautify your YAML
Copy the formatted result or download it
Common Use Cases
Development
- Configuration files
- Docker compose files
- Kubernetes manifests
- CI/CD pipelines
- Application settings
DevOps
- Infrastructure as code
- Deployment configs
- Service definitions
- Environment variables
- Build specifications
Understanding YAML
What is YAML?
YAML (YAML Ain't Markup Language) is a human-readable data serialization format. It's commonly used for configuration files and applications where data is being stored or transmitted.
YAML vs JSON
While JSON is more compact, YAML is more readable and supports comments, making it ideal for configuration files. YAML also has advanced features like anchors and aliases.
Frequently Asked Questions
Why format YAML?
Properly formatted YAML is easier to read, maintain, and debug. Consistent formatting also helps prevent syntax errors and makes version control diffs clearer.
What formatting options are available?
You can customize indentation (spaces or tabs), quote style (single or double), array formatting (flow or block), and more to match your project's requirements.
Is my data secure?
Yes, all formatting and validation happens in your browser. Your YAML content is never sent to our servers or stored anywhere.