YAML Formatter & Validator is a simple and efficient online tool specifically designed for processing YAML (YAML Ain't Markup Language) data. As a data serialization format renowned for its readability, YAML is widely used in configuration files and data exchange scenarios.

• Smart Formatting: One-click format messy or non-standard YAML code into a standard, clearly indented format for easier reading and maintenance.
• Instant Validation: When formatting or validating, the tool uses a powerful parser to check your YAML syntax. Any errors, such as indentation issues or key-value pair errors, will be clearly indicated.
• Custom Indentation: You can freely choose to use 2 or 4 spaces as the indentation standard according to your project's specifications or personal preference.
• Pure Frontend Processing: All operations are performed entirely within your browser—fast, secure, and your data is never sent to any server.