Free online YAML to JSON converter. Convert YAML configuration files into structured JSON format with syntax validation and instant clipboard copy.
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YAML to JSON converts YAML Ain’t Markup Language documents into valid JSON, parsing indentation-based key-value mappings, sequences, scalar types, multi-line strings, and nested hierarchies.
Executes standard YAML 1.2 specification parsing in the client browser, resolving indentation levels, boolean literals (`true/false/yes/no`), null scalars, explicit tags, and anchor/alias references (`&anchor` and `*alias`) into an equivalent JSON object tree.
version: "3.8"
services:
web:
image: nginx:alpine
ports:
- "80:80"{
"version": "3.8",
"services": {
"web": {
"image": "nginx:alpine",
"ports": [
"80:80"
]
}
}
}Translates YAML indentation hierarchy and sequence dashes into JSON nested objects and arrays.
While YAML is highly readable for humans and great for configuration files (like Docker or CI/CD pipelines), JSON is universally required by web APIs and modern JavaScript applications.
No. JSON does not natively support comments. Therefore, any comments written in your original YAML file will be stripped during the conversion process.
Absolutely. The YAML parsing logic is executed entirely in your browser using local memory. Your sensitive configurations are never transmitted over the internet.