CSV to JSON (NO UPLOAD)

Convert CSV into JSON instantly. Delimiter is auto-detected (comma, semicolon, or tab) and the first row is used as headers. All processing happens locally in your browser.

Input CSV
NO UPLOAD / Client-side only
Ready
Paste CSV (or choose a file) and click Convert. Nothing is uploaded.
Free — Free: up to 200 KB input (file or paste). Early access: free for now. No payment required. Paid plans coming soon.
    Output JSON
    Pretty

    What this tool does

    CSV to JSON converts tabular CSV data into a clean JSON array you can paste into apps, scripts, or configs. The tool uses the first row as column headers and automatically detects common delimiters like commas, semicolons, and tabs.

    Why NO UPLOAD matters

    Many CSV files contain sensitive rows (emails, IDs, internal metrics). This tool runs entirely in your browser, so your data stays on your device. All processing happens locally in your browser. Files are never uploaded.

    Privacy & Security
    All processing happens locally in your browser. Files are never uploaded.