CSV to JSON.
Paste CSV. Get a clean JSON array of objects using the first row as keys.
CSV Input
JSON Output
Everything happens in your browser
Local processing
Conversions happen in your browser. Nothing is uploaded.
Instant results
Native browser APIs mean no server queue, no waiting room.
No account needed
Open, drop, convert. No sign-up, no email, no friction.
Frequently asked questions
How are quoted fields handled?
Standard RFC 4180 quoting. Fields wrapped in double quotes can contain commas, newlines, and escaped quotes.
What if my CSV has no header row?
Add one before pasting. The first row is always treated as headers.
Can I switch to tab-separated input?
Not yet — only comma-separated for now.
Are my files really not uploaded?
Correct. Every conversion in this tool runs in your browser using JavaScript and the local file APIs. There is no server-side processing, no file upload, no temporary storage, and no log of what you converted. You can verify this by opening your browser's network tab while converting — the only traffic is loading the page itself.
Do I need an account or to install anything?
No. Open the page, drop your file, download the result. No signup, no email, no extension, no app.
Is there a file-size limit?
Not from us. The practical limit is your device's memory — browser tabs typically handle files in the hundreds of megabytes range without issues. Very large files may take longer to process on phones than on laptops.