YAML ↔ JSON Converter
Convert YAML to JSON and JSON to YAML in your browser, with indent options and clear error messages. Nothing is uploaded.
🔒 Your content never leaves your browser. Everything runs on this device.
Both directions
Pick YAML → JSON or JSON → YAML, paste your content, and press Convert. Handy for config files, CI pipelines and API payloads that mix the two formats.
Clear errors
If the input is invalid, the message explains what went wrong so you can fix it. Choose 2- or 4-space indentation for the output.
Private by design
Conversion runs entirely in your browser; your content never leaves your device. Copy or download the result.
Frequently asked questions
Which directions are supported?
YAML → JSON and JSON → YAML, both in the browser.
What if my YAML or JSON is invalid?
The tool shows a clear error message describing the problem so you can correct it.
Is my content uploaded?
No. Everything is converted in your browser and never sent to a server.