YAML Validator
Validate, format, and convert YAML to JSON instantly in your browser.
Example Presets
Root keys: 0 Estimated depth: 0
How to Use the YAML Validator
- Paste your YAML into the input field — validation runs automatically as you type.
- A green badge means your YAML is valid; a red badge shows the exact error line and message.
- Click Format YAML to normalize indentation and clean up spacing.
- Click Convert to JSON to see your YAML as a formatted JSON object.
Specifications
- Accepts
- Text — type or paste
- Gives you
- copy to clipboard
- Where it runs
- Your browser — the file is never uploaded
- Sign-up
- None
- Cost
- Free, with no usage limits