Have you ever had to compare two text files to see how they are different? If they are drastically different, it won’t be too hard to spot the changes. That’s not always the case though. DiffCheck is a handy plugin that lets you perform side-by-side comparisons of 2 text files.
This plugin has a simple shortcode that you can use with parameters to pass two different texts. You can also use two file names as attributes when using the diff_check shortcode.