YAML to JSON Converter
Convert YAML (including multi-document files) to JSON. Free and private: runs in your browser.
Paste YAML to get pretty or minified JSON. Syntax errors are reported with line numbers.
Runs entirely in your browser. Nothing you paste is uploaded or stored.
Use cases
- Move data between APIs, config files and databases.
- Bootstrap models from a sample API response.
- Save time on repetitive hand-written boilerplate.
Frequently asked questions
What happens to YAML comments?
JSON has no comments, so they are dropped. Anchors and aliases are expanded into full values.
Is the YAML to JSON Converter free?
Yes. It is free with no sign-up, and it runs entirely in your browser, so your input is never uploaded or stored.
Should I use the generated output as-is?
Treat it as a strong starting point. Types are inferred from your sample, so review nullability, naming and edge cases before committing it.
Related tools
Checking one snippet is a start. Scan your whole repository for free with CodeInspector.