Data/CleaningLocal only

CSV/TSV ↔ JSON Converter

Convert CSV/TSV to JSON and JSON to CSV locally (auto delimiter, header support).

csvtsvjsonconvertdelimiter

⌘⇧CCopy output

Your data stays in your browser — nothing is uploaded.

Input

Size: 56 B

Options

Mode

Delimiter

Auto detect checks the first few lines.

Header row

Pretty JSON output

Output

Converted CSV → JSON (delimiter: ,)

[
  {
    "name": "Jesse",
    "age": "25",
    "city": "Albuquerque"
  },
  {
    "name": "Walter",
    "age": "50",
    "city": "Albuquerque"
  }
]

Output is plain text only (safe by design).

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What is CSV/TSV ↔ JSON Converter?

CSV/TSV ↔ JSON Converter is a fast browser-based tool that helps you convert csv/tsv to json and json to csv locally (auto delimiter, header support). It runs locally so your data stays on your device.

🚀

How it Helps

✓Saves time by removing repetitive manual steps.
✓Improves accuracy with consistent output.
✓Works offline-friendly and keeps your content private (local processing).

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Usage Guide

1Paste or type your input into the tool.
2Adjust options or presets if needed.
3Copy or download the output instantly.

Frequently Asked Questions

No. This tool runs locally in your browser and does not upload your input.

No. Presets are saved locally in your browser storage.

Most inputs work well, but extremely large data may be limited by your browser memory.