How to use YAML Validator
1
Input YAML
Paste your YAML content into the editor or drag and drop your .yaml/.yml files directly into the drop zone.
2
Instant Validation
The tool automatically checks for syntax errors, indentation issues, and formatting problems as you type.
3
Fix & Export
If errors are found, fix them using the line-number guides. Once valid, copy the converted JSON for use in your project.
Key Features
Real-time Linting
Detect indentation errors and syntax mistakes instantly with precise line numbers.
YAML to JSON
Automatically convert your valid YAML to clean, formatted JSON for easy integration.
Batch Processing
Upload multiple YAML files at once. Validate them all and download results in bulk.
Privacy First
All processing happens locally in your browser. Your data never leaves your computer.
Frequently Asked Questions
What is YAML used for?
YAML (YAML Ain't Markup Language) is a human-friendly data serialization standard. It is commonly used for configuration files in tools like Docker, Kubernetes, GitHub Actions, and CI/CD pipelines due to its readability.
Why is indentation important in YAML?
Unlike JSON which uses braces {}, YAML uses whitespace indentation to define structure and nesting. This makes it more readable but also prone to syntax errors if indentation levels are inconsistent.
Is my YAML data secure?
Yes! All processing is done client-side in your browser using the `js-yaml` library. We never upload your data to any server, ensuring total privacy for sensitive configuration files.