Data Modify Tool is a free Chrome add-on developed by HelpfulExtApps. It falls under the category of Browsers and is specifically listed as an Add-ons & Tools subcategory.

This tool allows users to easily modify pasted data by performing various operations. Users can paste a column of data and choose a separator, such as a comma, to change the column into separated values. Alternatively, they can paste separated values and change the separators to new lines, creating a column.

Another useful feature is the ability to paste a column and add a specific text at the start of each line by typing it into the separator field. Users can also paste a column and delete duplicates, or replace single or multiple letters, numbers, and special characters in the data.

After performing any operation, the result is shown in the second textarea and is automatically copied to the clipboard. Additionally, users can easily clear the first textarea with just one click.

Data Modify Tool offers a convenient way to manipulate and modify data, making it a valuable tool for users who frequently work with data and need to perform quick modifications.