OmniFile Studio

CSV to JSON

Parse spreadsheets exported as CSV into structured JSON.

100% Client-Side · Zero-Server-Upload · 100% Private

Drop files here or tap to browse

Files are processed locally with Web Workers. Max recommended size 100 MB.

How it works

  1. 1Drop a CSV file with a header row.
  2. 2Click Process.
  3. 3Download the JSON.

Are my files uploaded to a server?

Never. Every tool runs inside your browser using WebAssembly and Web Workers. Your files stay on your device and are wiped from memory as soon as you download the result.