CompareMultiExcels Compare multi excels of old and new version. Then check the diff. How to 1 You have two folders("old" and "new") Ex: "old" 1.xlsx 2.xlsx ・・・ "new" 1.xlsx 2.xlsx ・・・ 2 _diff.txt says where teh diff is. 3 The diff value is written in _diff.xlsx.