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YAML to JSON
Paste or upload YAML — see the JSON before downloading. Reads block and flow collections, quoted and block scalars, comments. Not full YAML: anchors, aliases, tags and multi-document files are refused with a line number rather than guessed.
A little guidance. A better result.
How to use YAML to JSON
YAML in, JSON out — block and flow collections, quoted and block scalars. No anchors, aliases or tags — refused with a line number, not guessed.
Prepare your input
Paste or load YAML.
Use the workspace
Review the JSON result or line-specific error.
Check your result
Check nesting and value types before downloading.
Know the limits
Anchors, aliases, tags and multi-document YAML are unsupported and refused rather than resolved.
Where does my input go?
This browser tool processes your input on your device. Optional analytics is a separate choice; it is not needed to use the tool. Keep your original until you have checked the result.
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