YAML2JSON
Convert YAML to JSON and back, instantly and in your browser
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YAML2JSON - YAML to JSON and back, right in your browser.

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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.

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Maker
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Hey PH 👋 built this because config files often contain secrets and most online converters upload them to a server anyway. This one doesn't. Client-side only, you can verify in the network tab. Free, no signup. Would love to hear about YAML edge cases that break it, there are always more.

Handled my k8s manifests with anchors and merge keys without choking, which is more than I can say for most online converters. Nice that nothing leaves the browser.

Maker

 thanks! anchors and merge keys were honestly the annoying part to get right, half the test files i used were k8s manifests for exactly this reason. glad it held up

handy little tool, the in-browser approach means no sensitive configs get uploaded which is honestly a big plus. anchor and merge key support works pretty well on the k8s manifests i threw at it.

Maker

 appreciate it! ya the no-upload thing was the whole reason i built it, always felt weird pasting configs with secrets into random sites. if you find a file that breaks it i genuinely want to see it