Front and back, straight on, even light, all four corners inside the frame.
Remove the background so both images share the same proportions.
Convert both images to a single A4 portrait PDF, stacked vertically, then print or send that file.
Banks, carriers and government windows want both sides on one A4 sheet, stacked vertically, undistorted, with all four corners visible. Two photos printed on separate sheets and stapled together are routinely refused.
Shoot straight down on a plain background with even light and no flash. Leave a margin of background around the card so nothing gets clipped. The photo decides the result; editing can only crop and rescale.
Crop each photo down to the card edge and export as A4 portrait with the two images stacked. Skip the cropping and one card ends up visibly larger than the other, which is the most common reason a copy gets sent back.
Yes, but crop the background and match the sizes first — otherwise the two sides look mismatched.
Most counters require one sheet. If unsure, stack them on a single page.
Colour. The portrait and emblem carry meaning, and a greyscale copy may be rejected.
Processing is local in the browser; nothing is uploaded. Shred discarded printed copies.
Crop both to the card edge first, then give them equal height on the same page. Uneven cropping always produces uneven scaling.