Is my card worth it?

Download your card's transactions as a CSV and open the file here. Each purchase is filed by the store or the bank's own category and priced with the card's current rates — the same arithmetic the extension uses at a checkout — so you see what the card returned, and whether its annual fee pays for itself at the way you really spend.

Your statement is read by this page, in your browser, and is never uploaded, saved or sent anywhere — close the tab and it is gone. Only the date, description, amount and category columns are read. Nothing you choose here leaves this page: your picks live in the address bar after the #, which a browser never sends to a server — so a link to this page carries them, and nothing else does. How the numbers are worked out.