Online Config Validator

Validate JSON, YAML, Kubernetes, Docker Compose, and GitHub Actions configuration files against schemas with detailed error reporting.

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About This Tool

The Online Config Validator is a powerful tool that helps developers validate configuration files against various schemas. Paste your JSON or YAML content, or upload a config file, and select a schema type (JSON Schema, YAML Schema, Kubernetes, Docker Compose, or GitHub Actions). The tool will parse your configuration, validate it against the selected schema, and provide detailed feedback including any errors, warnings, and line numbers. It's perfect for ensuring your configuration files are correct before deployment, with support for multiple popular formats and real validation logic (no mocks).

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How to Use

Paste your JSON or YAML configuration content into the textarea, OR drag and drop a config file into the upload zone.
Select the validation schema type from the dropdown (e.g., JSON Schema, Kubernetes, Docker Compose).
Click the 'Validate Config' button to process your configuration.
View the validation results: a green success message for valid configs, or detailed error messages with line numbers for invalid ones.
Use the 'Clear' button to reset the form or 'Validate Another' to start over.

Frequently Asked Questions

Find Quick Answers

What types of configuration files can I validate?

You can validate JSON and YAML files, including specific formats like Kubernetes manifests, Docker Compose files, GitHub Actions workflows, and generic JSON/YAML schemas.

Does the tool support file uploads?

Yes, you can either paste your configuration content directly or upload a file (JSON, YAML, .yml, .yaml extensions supported) via drag-and-drop or file selection.

What happens if my configuration has errors?

The validator will provide detailed error messages including the type of error, the problematic value, and line numbers (when available) to help you quickly fix issues.

Is this tool free to use?

Yes, this online config validator is completely free to use with no registration required. All validation happens in real-time with full functionality.

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