Convert from YAML to JSON and JSON to YAML with one-click mode switching.
Configure indentation, key sorting, and output formatting for both YAML and JSON.
Instant syntax validation with detailed error messages for both formats.
Upload files with auto-detection of format and download converted results.
Processing runs in your browser. Saving and sharing are optional, require an account, and send your chosen content to our service.
Maintain data integrity while converting between formats with proper type handling.
Paste YAML into the source panel and choose your JSON indentation before converting. Start with the mapping below: the YAML key becomes a quoted JSON property while the numeric value remains a number. Read the output before using Copy or Download. Quote YAML values that must stay strings, especially identifiers with leading zeros or text resembling another scalar type.
Use a small representative document to check how your configuration maps to JSON. JSON cannot preserve YAML comments, anchors, or presentation choices as written. A successful conversion therefore gives you data rather than a reversible copy of the original file. The file upload accepts .yaml, .yml, .json or .txt files up to 100MB. Reduce the input if your browser runs short of memory even below that limit.
YAML:
name: Ada
count: 2
JSON, 2 spaces:
{
"name": "Ada",
"count": 2
}
Many APIs, tools, and programming languages only accept JSON. Converting YAML config files to JSON lets you use them in REST APIs, JavaScript applications, and tools that don't support YAML natively.
All data values are preserved exactly. However, YAML features without JSON equivalents β comments, anchors, aliases, and multi-line string formatting β are resolved during conversion. Comments are lost since JSON doesn't support them.
YAML types map to JSON types: strings, numbers, booleans, null, arrays, and objects convert directly. YAML dates become strings in JSON. Anchors and aliases are resolved to their actual values during conversion.
Yes. Kubernetes manifests, Helm charts, and Docker Compose files convert cleanly to JSON. Multi-document YAML (separated by ---) is handled as separate JSON outputs. This is useful for kubectl apply with JSON input.
Processing runs in your browser. Choosing Share uploads the selected tool state; anyone with the link can open it. Signing in to save sends content to your account library and records save history. Review the selection before either action. Closing the page does not delete those copies. Copying locally does not create a server share.