DataStructured content

CSV to JSON

Parse quoted CSV, validate the row shape, and create JSON entirely inside this browser tab.

On-device prototype

Or paste CSV below · 20 MB file limit

CSV input

Stays in this browser tab

0 characters

Result

Created only after validation

A validated result will appear here.

The first row becomes keys. Quoted commas, escaped quotes, CRLF, and quoted line breaks are supported. Duplicate headers and uneven rows stop with a precise error.