YAML Validator

Validate your YAML for correct syntax and structure quickly and easily. Ensure your configuration files and data are well-formed with our free online tool.

Enter your YAML or upload a file (.yaml, .yml - Max size: 2MB)

No file chosen

How to Use Our YAML Validator

Enter or Upload YAML

Paste your YAML code into the input area or upload a YAML file (.yaml, .yml) (up to 2MB).

Validate

Click Validate to check your YAML syntax and structure.

Review Results

View detailed validation messages for your YAML input.

Features

YAML Syntax Checking

Validate YAML against standard syntax rules (indentation, colons, etc.).

File Upload

Upload YAML files (.yaml, .yml) up to 2MB for quick validation.

Error Highlighting (via messages)

Get clear error messages indicating the location and nature of syntax problems.

Basic Structural Validation

Ensures basic YAML structure is correct based on js-yaml parsing.

Popular Use Cases

Configuration Files

Validate configuration files (e.g., for Docker, Kubernetes, CI/CD) before use.

Data Serialization

Ensure YAML data for serialization or inter-process communication is valid.

Debugging YAML

Quickly identify and fix syntax errors in YAML documents.

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