Features
- Works with .xlsx and .csv, any sheet.
- Ignore case, extra spaces and leading zeros options.
- Counts: found, not found, only in the second file; warns about duplicate keys.
- Download: matched list + not found + only in file 2, in one workbook.
How to use it
Choose your main list (its rows are kept) and the file to take values from.
Pick the match column in each (it is guessed from matching headers) and the columns to bring over.
Download the matched workbook.
Free and private
Everything happens inside your browser: your files are read on your own device and are never uploaded, stored or seen by anyone else.
Questions
What if a key appears twice in file 2?
Like VLOOKUP, the first match is used, and you are warned how many keys repeat.
Are my files uploaded?
No - matching happens in your browser.
Is it free?
Yes - free and unlimited, with no sign-up and no watermark.