What is a YAML Validator?
A YAML validator checks whether YAML data can be parsed correctly according to YAML syntax rules. It can help identify problems with indentation, mappings, sequences, values, and other structural parts of a YAML document.
How to Validate YAML Online
- Paste your YAML code into the input editor.
- Click Validate.
- Review the validation result and any reported error details.
- Correct the YAML and validate it again.
What ToolSwift YAML Validator Checks
- YAML parsing and syntax errors.
- Indentation and structural problems detected by the parser.
- Invalid mappings and sequence structures.
- Malformed YAML values and document structures.
- Parser error messages and available line information.
Why Validate YAML?
YAML is widely used for configuration files, application settings, automation workflows, and data exchange. A small indentation or syntax mistake can prevent a configuration file from being parsed. Validation helps you catch these problems before using the YAML in a project.
YAML Validator vs YAML Formatter
A YAML validator checks whether YAML can be parsed correctly, while a formatter focuses on code presentation and readability. Validation is useful when you need to find syntax or structural problems before using a YAML document.
Frequently Asked Questions
Is this YAML Validator free?
Yes. ToolSwift's YAML Validator is available online at no cost.
Can I validate a YAML file?
Yes. Click Browse and select a local .yaml
or .yml file. The content is loaded into the editor for validation.
Does the validator automatically fix YAML?
No. The validator reports parsing errors and available details so you can review and correct the source YAML yourself.
Why is indentation important in YAML?
YAML uses indentation to represent relationships between mappings and sequences. Inconsistent indentation can change the document structure or cause parsing errors.
What does YAML lint mean?
YAML lint generally refers to checking YAML files for syntax and formatting problems. This validator performs parsing-based checks to identify invalid YAML.
