YAML Formatter
Format and beautify YAML documents with customizable indentation
Enter or paste YAML data to format or validate
What is YAML Formatting?
YAML formatting adds consistent indentation and structure to YAML data to make it human-readable. This tool helps you format and validate YAML data entirely in your browser - your data never leaves your device. YAML is commonly used for configuration files in Docker, Kubernetes, CI/CD pipelines, and many other DevOps tools.
How to Use
- Paste your YAML data into the input field
- Choose your preferred indentation (2 or 4 spaces)
- Click "Format" to beautify or "Validate" to check syntax
- Copy the result using the "Copy to Clipboard" button
Example
Input (inconsistent formatting):
name: John
age: 30
address:
city: New York
zip: 10001Output (formatted with 2 spaces):
name: John
age: 30
address:
city: New York
zip: 10001Features
- Pretty-print YAML with customizable indentation (2 or 4 spaces)
- Validate YAML syntax with clear error messages
- Display error line numbers for easy debugging
- Preserves Unicode characters correctly
- 100% client-side processing for privacy
- Supports nested objects and arrays
Frequently Asked Questions
What is YAML formatting?
YAML formatting adds whitespace and indentation to YAML data to make it easier to read and understand. It's especially useful when working with configuration files for Docker, Kubernetes, or CI/CD pipelines.
Does this tool validate YAML?
Yes! Click the "Validate" button to check if your YAML is syntactically correct. The formatter will also detect invalid YAML and display parse errors with line numbers.
What's the difference between YAML and JSON?
YAML is a superset of JSON that's more human-friendly. It supports comments, doesn't require quotes around strings, uses indentation instead of brackets, and has a cleaner syntax for configuration files.
Can I customize the indentation?
Yes, you can choose between 2-space and 4-space indentation. The default is 2 spaces, which is commonly used in configuration files.
Is my data sent to a server?
No, all YAML formatting happens in your browser. Your data never leaves your device, ensuring complete privacy and security for sensitive configuration files.
Does this support multi-document YAML?
The formatter currently processes single YAML documents. If you have multiple documents separated by --- markers, only the first document will be formatted.