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Free Online YAML Formatter, Validator and Converter

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What is YAML Formatting and Validation?

YAML formatting transforms human-readable configuration files into standardized, properly indented YAML. Our free online YAML formatter validates syntax, highlights errors, and helps convert YAML to JSON.

Use this tool to clean, validate, and convert YAML configuration files for APIs, CI/CD, and application configs before deployment.

How to Use the YAML Formatter

Paste or type YAML into the input editor

Click 'Format YAML' to beautify and validate the syntax

Click 'Convert to JSON' to transform YAML into JSON format

Copy formatted YAML or download the output for your projects

Why Use Our YAML Formatter

Fast, browser-based YAML formatting and validation

Secure client-side processing - your data stays in your browser

Useful for DevOps, configuration files, and API payloads

Convenient convert to JSON feature for integration with tools

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