YAML to JSON / JSON to YAML Converter
Convert YAML and JSON online with syntax validation, copy, download, swap, and clear controls. Everything runs locally in your browser.
100% browser-onlyTool Workspace
Result
Your converted result will appear here.
Privacy Notice：Your files are processed locally. They are never uploaded.
About this tool
Convert configuration and data between YAML and JSON while keeping source content in this browser.
Two-way conversion with validation
Choose the input format and convert to the other format. Syntax errors include a clear message, line number, and column when available.
Anchors and structured data
Process arrays, nested objects, null, booleans, numbers, multiline strings, comments, Unicode, and YAML anchors locally.
How to use this tool
- Choose JSON to YAML or YAML to JSON, then paste your input.
- Run the conversion and review the line and column if the syntax is invalid.
- Copy or download the result, or swap the output back into the input editor.
Private, local processing
Your YAML and JSON are processed only in this browser. The content is not sent to NexaForge servers or analytics.
Frequently asked questions
Is my YAML or JSON uploaded?
No. Parsing, conversion, copying, and downloading all happen locally in your browser.
Are YAML anchors preserved in JSON?
Anchors and aliases resolve to ordinary objects or arrays, so referenced content is expanded in the JSON result.
Are multiline strings and comments supported?
Yes. YAML multiline strings become JSON strings, while YAML comments are omitted from the JSON result.
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