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.
announcement heads up!
We just launched our new site — Online PNG Tools — utilities for working with PNG images. 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!
All csv tools
Quickly convert a CSV file to a JSON data structure.
Quickly convert a JSON data structure to a CSV file.
Quickly convert a CSV file to an XML file.
Quickly convert an XML file to a CSV file.
Quickly convert a CSV file to a YAML file.
Quickly convert a YAML file to a CSV file.
Quickly convert a CSV file to a TSV file.
Quickly convert a TSV file to a CSV file.
Quickly convert a CSV file to evenly aligned text columns.
Quickly convert text columns to a CSV file.
Quickly encode CSV to base64.
Quickly decode base64 to CSV.
Quickly convert CSV to URL-encoding.
Quickly decode CSV from URL-encoding.
Quickly change the CSV column delimiter to a new symbol.
Quickly prepend columns at the beginning of a CSV file.
Quickly append one or more new columns at the end of a CSV file.
Quickly insert one or more new columns anywhere in a CSV file.
Quickly export one or more columns from a CSV file.
Quickly replace one or more columns in a CSV file.
Quickly delete one or more columns from a CSV file.
Quickly swap two columns in a CSV file.
Quickly exchange columns with rows in a CSV file.
Quickly exchange rows with columns in a CSV file.
Quickly transpose a CSV file.
Quickly truncate columns in a CSV file.
Coming soon These csv tools are on the way
Convert CSV to HTML
Convert CSV to a HTML table.
Convert CSV to PDF
Convert CSV to a PDF document.
Convert CSV to an Image
Draw CSV file as table and output a PNG, JPG or GIF picture.
Convert CSV to Excel
Convert CSV to an Excel spreadsheet.
Preview CSV in the Browser
Show the contents of CSV in your browser.
Convert CSV to LaTeX
Convert CSV to a LaTeX table.
Convert CSV to SQL
Generate SQL queries from a CSV file.
Merge CSV Files
Merge together two CSV files.
Quote all CSV Fields
Quote absolutely all CSV fields.
Change CSV Quote Character
Change the character CSV fields are wrapped in.
Delete Empty CSV Columns
Delete columns that are completely empty.
Delete Empty CSV Rows
Delete rows that are completely empty.
Compress a CSV file. Remove unnecessary spaces.
Compare Two CSV Files
Diff CSV files and show differences visually.
Subscribe! Never miss an update
Notifications We'll let you know when we add this tool