How to use this tool
CSV needs a unique, non-empty header row. For the reverse direction, use an array of flat JSON objects. All CSV values remain strings.
A quick example
name,colour followed by Basil,green becomes [{"name":"Basil","colour":"green"}].
Supported formats & limitations
Comma-delimited CSV only. Quoted commas and embedded newlines are supported. Nested objects are rejected; missing JSON fields become blank CSV cells. Maximum input: 1 MiB.
Does this tool upload my input?
No. Tool processing happens in your browser. Your input and result are not automatically saved. The host may still receive ordinary page access logs.Read about privacy.