Is Yaml Validator free to use?

Yes, Yaml Validator is completely free with no hidden fees or usage limits. Pro features are available for power users.

Absolutely. All processing happens locally in your browser. Your files never leave your device.

Do I need to install software?

No installation required. Works directly in your web browser on any device.

Validate, format, and convert YAML instantly

UPLOAD

Drop a file here or click to browse

Accepts .yaml, .yml, .txt -- up to 500 KB (free) / 5 MB (Pro)

Indent

Sort keys alphabetically

Custom JSON Schema

Second YAML document

Upload multiple .yaml/.yml files (up to 20)

Error

Keys --

Max Depth --

Documents --

Size --