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YAML Validator

Validate and lint your YAML configuration files. Check for spacing issues, tab markers, and format errors.

🔒 Validated locally in your browser — YAML text is never uploaded to any server

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Keep your configuration profiles clean

YAML files are strictly indentation-sensitive, making them notorious for syntax bugs that are difficult to locate. A single tab character instead of spaces, or an misaligned array item, can crash your Kubernetes cluster deployment, break a GitHub Action execution, or trigger docker-compose parsing failures. A YAML validator analyzes the file structure, checks for common formatting pitfalls, and tells you exactly which line contains the indentation error.

FAQ

Why does YAML fail when using tabs?
The official YAML specification forbids the use of tabs for indentation. YAML requires spaces to establish structure. This validator flags tab characters to help you find and replace them.
Does this validator check for schema requirements?
This tool validates the general syntax rules of YAML format (structural consistency). It does not validate configurations against specific schemas (like Kubernetes custom resources) since those requirements vary by platform.
Is there any configuration uploaded?
No. The validator runs entirely client-side using JavaScript in your browser, maintaining full privacy for your secrets, access keys, or config structures.

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