The tool should do the basic functionality of Diff, shows added/removed/modified lines between 2 sets of inputs.

the tool should contain a basic two textarea, each will contain a file contents, then a button should switch to the diff view back and forth.

another design of this tool is a live preview of changes while editing/pasting text into another diff view under the input textareas.

one last design, we can include an advanced text editor like Ace to replace the input textareas and highlight the difference on the fly.

further enhancements

• choose between files chunks to merge into a third file and download it or show as third textarea.