Developer / BROWSER-LOCAL

JSON ↔ YAML Converter

Convert JSON and YAML 1.2 locally, with duplicate-key and alias limits.

Processed on your device

Operation

InputMaximum 200,000 characters. Input is not stored.

Result

Ready. Use Ctrl/⌘ + Enter to run.

Completed and failed run counts are stored only on this device.

How to use this tool

Choose a direction, paste valid JSON or YAML, then run. YAML keys must be unique.

Custom YAML tags and complex schema semantics are not supported. Alias expansion is limited. Maximum main input: 200,000 characters.

Does my input leave my browser?

No. A local worker processes it; text and files are not uploaded or stored.

Does YAML preserve all formatting?

Conversion preserves data, not comments, anchors or layout.

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