This is an online tool that you can compare the contents of two list files such as name lists, id lists.
extract lines contained only in one side, or extract / delete lines included in both.
You can do following easily.
extract lines contained only in one side
extract / delete lines included in both
These process are executed only by client side javascript, so you don't have to worry about handling confidential information.
file A : -
Cliek button or Drag & Drop
file B : -
Cliek button or Drag & Drop
If you choose large size file, it might takes some time before the comparison process is completed. Please wait for a while after pressing the button.