Supplier CSV to Square import file

Every supplier ships a different sheet. One calls it Item No, the next calls it Product Code. Square only reads one layout. This page takes the supplier file you already have. It turns that file into the layout Square reads. Drop the file, check the column guesses, download the Square file. The mapping is saved against the supplier. Next month the same file is recognized and the work is one click. Costs and prices are parsed as money, not text. Currency symbols and thousand separators do not break the import. Rows Square would reject are listed with the reason and a fix. Your file is read in the browser and never uploaded.