What do you mean by barcodes? Are you referring to the string of numbers, are they in barcode font, or are they images? If it's just a string of numbers to compare, I've used this feature in the past https://support.office.com/en-us/article/Highlight-patterns-and-trends-with-conditional-formatting-in-Excel-2016-for-Mac-c3130a89-7ebf-41ac-ab93-e8f58bb42844 On Fri, Nov 10, 2017 at 4:16 PM, Kyle Breneman <[log in to unmask]> wrote: > I have 2 Excel files, each with a column of barcodes. I am supposed to > determine which, if any, of the barcodes in the first file are also present > in the second file. Is writing a short Python program the best way to do > this, or is there a more efficient way? (There are about 300 items in the > first file and about 1,000 items in the second file.) > > Regards, > Kyle >