name: CSVKit Next - Advanced CSV Toolkit description: Transform, filter, merge, validate, and analyze CSV files. Zero dependencies. Powerful CSV processing from command line. Free CLI tool.

CSVKit Next

Swiss army knife for CSV files. Filter, transform, merge, validate, analyze.

Installation

npm install -g @lxgicstudios/csvkit-next

Commands

Filter Rows

csvkit filter data.csv age gt 30
csvkit filter users.csv email contains @gmail
csvkit filter sales.csv status eq completed

Operators: eq, ne, gt, lt, gte, lte, contains, startswith, endswith, regex, empty, notempty

Transform Columns

csvkit transform data.csv "full_name=first+' '+last"
csvkit transform prices.csv "total=price*quantity"
csvkit transform users.csv "domain=email.split('@')[1]"

Merge Files

csvkit merge users.csv orders.csv -o combined.csv

Validate

csvkit validate data.csv
csvkit validate data.csv schema.json

Schema example:

{
  "required": ["id", "email"],
  "types": { "age": "number", "email": "email" }
}

Statistics

csvkit stats sales.csv

Shows: rows, columns, min/max/avg, unique values.

Other Commands

csvkit head data.csv 20          # First 20 rows
csvkit tail data.csv 20          # Last 20 rows
csvkit columns data.csv          # List columns
csvkit sort data.csv price desc  # Sort
csvkit unique data.csv category  # Unique values
csvkit sample data.csv 50        # Random rows
csvkit convert data.csv -t json  # To JSON

Common Use Cases

Filter high-value orders:

csvkit filter orders.csv total gt 1000 -o high_value.csv

Add calculated column:

csvkit transform sales.csv "profit=revenue-cost" -o with_profit.csv

Quick data overview:

csvkit stats large_dataset.csv

Features

Zero dependencies
Fast streaming for large files
Expression-based transforms
Schema validation
Multiple output formats

Built by LXGIC Studios

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CSVKit Next Advanced CSV Toolkit