YAML to JSON Converter
All processing happens locally in your browser. No data is uploaded or stored.
Drag file, click upload, or paste a file from clipboard.
Policy: warn+continue (recommended)
Auto-convert enabled
Trust Contract: SAFE
Trusted actions: disabled
Recent Conversions
No completed conversions yet. Run a conversion to capture profile, size, and timing.
YAML Input
0 chars
JSON Output
0 chars
0 chars
How to Use
- Paste or upload YAML in the input panel.
- Choose profile and schema mode, then adjust advanced policy controls if needed.
- Output updates automatically while you type.
- Review conversion summary and download JSON or audit report.
Related Tools
Frequently Asked Questions
How are YAML files with multiple documents handled?
By default, each YAML document becomes one array item in JSON. You can switch to first-only or strict error mode.
What happens if duplicate YAML keys are found?
Default mode warns and continues. You can switch to strict mode to block conversion when duplicates are detected.
Can this handle large YAML files safely?
Yes. Large inputs run in a Web Worker with progress updates and cancel support to keep the UI responsive.
Is my data uploaded anywhere?
No. All processing happens locally in your browser. No uploads or storage.