There are 2 options with the "Give" button below. 1. Credit Card and 2. Bank (echeck).
The preferred giving route online is by echeck from your bank as the church receives more of your donations that way. Giving by credit or debit card is an option but the card companies take more transaction fees as compared to echecks.
When you give there is also the option to cover the fees charged by the bank, so that the church gets the whole amount.
Mailed paper checks are always the best as both gift/giver are not subject to any fees.