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Hazuu Tools

YAML Validator

Validate your YAML syntax instantly with precise error locations and JSON conversion.

YAML Input
JSON Output
Valid YAML will be converted to JSON here...
info

About YAML Validator

YAML is widely used for configuration files in Docker, Kubernetes, CI/CD pipelines, and application settings. Its indentation-sensitive syntax makes it prone to subtle errors — a single misaligned space can break an entire configuration file.

Our YAML Validator checks your YAML syntax instantly, pinpoints errors with line and column numbers, and converts valid YAML to JSON for easy inspection. All processing happens locally in your browser — your configuration data never leaves your machine.

help

How to Use

01

Paste Your YAML

Copy your YAML configuration or data and paste it into the editor on the left.

02

Validate

Click "Validate" to check syntax. Errors are shown with exact line and column numbers.

03

View as JSON

Valid YAML is automatically converted to JSON on the right for easy inspection and comparison.

quiz

Frequently Asked Questions

What is a YAML Validator? expand_more
A YAML Validator checks whether a document follows valid YAML syntax. It catches indentation errors, invalid mapping structures, duplicate keys, and other syntax issues, reporting the exact location of each error to help you fix problems quickly.
What common YAML errors does this catch? expand_more
The validator catches inconsistent indentation, tab characters (YAML requires spaces), malformed mappings and sequences, unclosed quotes, duplicate keys, and invalid special characters.
Is my YAML data secure? expand_more
Yes. All validation runs entirely in your browser using the js-yaml library. Your data never leaves your machine and is not sent to any external server.
Why does it convert YAML to JSON? expand_more
Showing the JSON representation helps you verify that your YAML structure is being interpreted as intended. It makes nested structures, data types, and array mappings explicit and easy to inspect.