Error based mapper and Union based mapper Chrome Extension

Error based : https://drive.google.com/open?id=0B9Iw4TQ-C_xCZmItbnpGRVpEaWc
Union based : https://drive.google.com/open?id=0B9Iw4TQ-C_xCQmtta2ZIZkd5MVE
Open source chrome extension made by z3r07y-kn0w

Installation:
Step 1) Extract the rar
Step 2) go to chrome://extensions
Step 3) check developer mode
Step 4) load unpacked extension
Step 5) click options of the chrome extension

Using:
Well i don't also know how to use it but its really easy to learn so good luck!

String tools