What is the minimum size for gold foil printing?

Foil business cards are offered in standard small-format sizes, and the smallest available size is shown right in the size selector on the product page.

• Where to check: the size dropdown on the foil card product page lists every available dimension, including the smallest.
• Standard formats: gold foil is applied within the usual business card size range.
• Custom needs: if the size you want is not listed, contact customer service to confirm whether it can be produced.

Rather than a single fixed minimum quoted here, the live selector is the source of truth for what sizes gold foil supports.