csv → to → json

Quoted fields are parsed properly, so commas, line breaks and doubled quotes inside a value survive intact.

Numbers and true/false/null are converted to real JSON types. Values with a leading zero stay strings, because identifiers and phone numbers lose meaning otherwise.

Duplicate column headers are suffixed rather than overwriting one another.

Everything runs in your browser. Nothing is uploaded, so you can paste data you would not send to a stranger’s server.