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CSV to JSON

Convert between CSV and JSON formats

■ 01

What is CSV and JSON?

CSV (Comma-Separated Values) is a simple tabular data format where each line represents a row and values are separated by delimiters. JSON (JavaScript Object Notation) represents data as arrays of objects with named pro…

■ 02

How does it work?

CSV to JSON parses each line into an array, using the first row as property names (if headers enabled). Each subsequent row becomes a JSON object with those properties. JSON to CSV extracts all unique keys as headers, t…

■ 03

Sample Cases

Covers Simple CSV, CSV with quotes, and Semicolon delimiter so you can compare common inputs and outputs quickly.

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/ Integration

Source code from the selected tool, shown here alongside the live version on the right.

/ Source Code

TypeScript

typescript

// No npm packages needed - pure Node.js/TypeScript

type DelimiterType = 'comma' | 'semicolon' | 'tab';

function getDelimiterChar(delimiter: DelimiterType): string {
  switch (delimiter) {
    case 'comma': return ',';
    case 'semicolon': return ';';
    case 'tab': return '\t';
  }