LOCAL TEXT TOOL · VERIFIED LOCAL TOOL
Unflatten JSON object
Expand safe dot-keyed fields into a nested JSON object.
LOCAL PROCESSING · No upload or network lookup · Maximum input 1 MB
Input
Result
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Rebuild nested JSON from dotted keys
Convert a safe flat JSON map into a nested object based on supported path syntax.
Can malicious property names safely be expanded into objects?
Unsafe property paths must be rejected to prevent prototype pollution and structural conflicts.
Related tools: flatten json object · validate json syntax