csv-to-json-cli

Convert CSV files to JSON and vice versa. Zero-dependency CSV parsing — fully RFC 4180 compliant.

Install

npm install -g csv-to-json-cli

Usage

CSV → JSON

csv2json csv2json data.csv
csv2json csv2json data.csv -o output.json --pretty
csv2json csv2json data.csv --delimiter ";" --fields "name,email"
cat data.csv | csv2json csv2json --pipe

JSON → CSV

csv2json json2csv data.json
csv2json json2csv data.json -o output.csv
csv2json json2csv data.json --flat --delimiter "\t"
cat data.json | csv2json json2csv --pipe

Options

| Option | Description | |---|---| | -o, --output <file> | Write to file instead of stdout | | -d, --delimiter <char> | Field delimiter (default: ,) | | --no-header | CSV has no header row (fields named field1, field2, …) | | --pretty | Pretty-print JSON with indentation | | --flat | Flatten nested JSON objects for CSV output | | --fields <list> | Include only specified fields (comma-separated) | | --pipe | Read input from stdin |

Features

• Manual CSV parser — handles quoted fields, commas inside quotes, newlines in fields, escaped quotes
• Flatten nested JSON objects with dot notation
• Pick specific fields to include in output
• Stdin/stdout piping for shell pipelines
• Row and field count summary on stderr

License

MIT