YAML to JSON Converter
Free online YAML to JSON converter — parse YAML into pretty-printed JSON locally in your browser.
Runs entirely in your browser — nothing you enter is uploaded or stored.
YAML to JSON Converter
Free online YAML to JSON converter — parse YAML into pretty-printed JSON locally in your browser.
Paste your YAML on the left and the JSON is produced instantly on the right — right in your browser. There’s no upload step: your data never leaves the page, which you can confirm from the Network panel or our privacy policy.
Credits
This tool is powered by open-source libraries that run in your browser:
- js-yaml — YAML parser/serializer (MIT)
Frequently asked questions
How do I convert YAML to JSON?
Paste or type your YAML in the left editor (or use Sample / Upload / URL). The JSON appears instantly on the right — copy or download it. Everything runs in your browser.
Is my data uploaded anywhere?
No. This converter runs entirely in your browser — your YAML is never sent to a server. You can verify it in the Network tab or in our Content-Security-Policy.
Is the YAML to JSON free?
Yes — completely free, no sign-up and no limits. Everything happens client-side.