Csv column prepender
World's simplest csv tool
Free online CSV column prepender. Just load your CSV, enter the new columns, and your CSV will get the new columns added before the first column. Load CSV, prepend columns. There are no ads, popups or nonsense, just an awesome CSV column prepender. Created by developers for developers.
love tabs more than commas? foo\tbar\tbaz
We also have Online TSV Tools — utilities for working with tab separated values. Check it out!
Csv column prepender tool What is a csv column prepender?
This tool adds one or more columns to the beginning of a Comma Separated Values (CSV) file. Super simple!
Csv column prepender examples Click to use
This example prepends a column with values val1 and val2 to the beginning of existing CSV data.
These options will be used automatically if you select this example.
Enter your CSV to be prepended here
Pro tips Master online csv tools
You can pass input to this tool via ?input query argument and it will automatically compute output. Here's how to type it in your browser's address bar. Click to try!
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