JSON ToolsLocal
JSON Formatter + Validator
Validate, format, minify, and repair common JSON mistakes.
JSON Tools
YAML to JSON
Turn YAML into formatted JSON in one pass.
InputYAML, YML
OutputFormatted JSON export
Works onAny modern browser
About this tool
Parses valid YAML and returns readable JSON output with no server round trip.
Common use cases
- Convert YAML config into JSON for APIs or app settings.
- Inspect YAML structures in a stricter JSON format.
How to use it
- Paste YAML or upload a .yaml or .yml file.
- Run the conversion.
- Copy or download the resulting JSON.
Best for
- Turning YAML configuration into JSON for APIs or app settings
- Inspecting nested YAML structures in a stricter JSON format
- Converting a local config sample without sending it through a server
Input and output notes
- Accepted inputs: .yaml, .yml.
- Exports are generated locally in the current browser session.
Limits to know
- Large pasted documents can be slower on lower-memory devices.
- Invalid source data must still be corrected before export.
Privacy
This tool runs in the browser, so pasted content and uploaded files stay on the current device during normal use.
Common next steps
Related tasks covered on this page
This page is designed for these closely related requests. They use the same tool or reference answer, so they are kept together instead of split across duplicate pages.
- openapi yaml to json converter
- yaml to json converter
- yaml to json online
Common questions
Does this support nested YAML?
Yes. Nested objects and arrays convert into equivalent JSON structures when the YAML is valid.
Is the YAML sent to a server?
No. Parsing happens locally in your browser using a client-side YAML parser.