About the YAML Converter
Convert between YAML and JSON in either direction. Paste YAML to get formatted JSON, or paste JSON to get clean YAML. Syntax errors are caught so you know when your input needs a fix.
Conversion runs entirely in your browser, making it safe for config files and other sensitive data — nothing is uploaded.
Features
- Convert YAML to JSON and JSON to YAML
- One-click direction toggle
- Validates input syntax
- Clean, readable output
- Copy to clipboard in one click
- 100% client-side — your data stays private
How to convert YAML and JSON
- Choose a direction: YAML to JSON or JSON to YAML.
- Paste your input into the box.
- Review the converted output.
- Click Copy to grab the result.
Frequently asked questions
Which YAML version is supported?
Standard YAML 1.2 is supported, covering mappings, sequences, scalars and common syntax.
What if my input has a syntax error?
The tool shows an error message so you can fix the YAML or JSON before converting.
Is my data uploaded?
No. The conversion runs entirely in your browser.
Is it free?
Yes, completely free with no sign-up.