YAML2JSON

What it does

Convert YAML to JSON (and back) without your config ever leaving the browser. Handles multi-document files like Kubernetes manifests, gives real parse errors with line numbers, and works offline once loaded. Free, no signup. The conversion core is open source on GitHub.

Paste or upload YAML and get clean JSON instantly — multi-document files, anchors, and merge keys handled. JSON to YAML works too. Nothing is sent to a server. Converted instantly in your browser — nothing is uploaded to a server. Supports multi-document YAML, anchors, and comments-in (comments don't survive conversion — JSON has none). We're continually improving our extraction and generation. If a file doesn't convert to your expectations, tell us and we'll fix it. Like this tool? Invite a friend — you each get 10 free conversions. Conversion runs entirely in your browser. Your configs, secrets, and manifests are never uploaded, logged, or stored — there is no server side. Real YAML 1.2…from yaml2json.com

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