"Does this validate my YAML?"

"Yes. When you convert YAML to JSON, the parser reports the exact syntax error and line if the YAML is invalid, so you can use it as a quick YAML validator for config files and Kubernetes manifests."

"Is my data uploaded anywhere?"

"No. Parsing and conversion happen entirely in your browser. Your YAML or JSON never leaves your device, so it is safe for internal configuration."

"Can it handle multi-document YAML?"

"This converter processes a single YAML document at a time. For multi-document files (separated by ---), convert each document separately."

YAML to JSON Converter (and JSON to YAML)

Convert YAML to JSON and JSON to YAML instantly, with validation. Handy for Kubernetes manifests and config files — nothing leaves your browser.

YAML input

JSON output

Output appears here.

YAML ↔ JSON, validated

Paste YAML to get formatted JSON, or switch tabs to turn JSON into YAML. If the input has a syntax error, the exact message and line are shown — so this doubles as a quick YAML validator for Kubernetes manifests and config files.

Privacy

Everything runs in your browser. Your YAML or JSON is never uploaded, which makes it safe for internal configuration. For multi-document YAML (separated by ---), convert each document separately.