The single A4 flyer
A single A4 flyer is one flat sheet, 210 × 297 mm — the everyday size most print layouts already assume.
SizesA4, A5, A6
A4 trim210 × 297 mm
FormatFlat, no fold
FilesLayered PSD, smart objects
It's the default flyer size, and that cuts both ways. A4 is also the sheet letters, invoices and forms are printed on, so a flyer starts out looking like paperwork unless the design says otherwise early — an image running off the edges, type at a size no document would use, a colour a laser printer couldn't produce. It's the size for event promos, menus, price lists, notices taped in shop windows and anything pushed through a letterbox.
The A sizes are the convenient part of working here: A4, A5 and A6 all share the same proportion, so artwork scales from one to the next without refitting. A5 is half an A4 and the size that gets handed out at street level; A6 is half again and small enough to survive a pocket. What does change is how the layout reads — A4 is tall and text falls a long way down it, so the middle is where designs tend to go quiet, and two columns come out narrower than they look on screen.
In the sets: held, pinned to a board, stacked, scattered and shot straight down, so you can present the flyer clean or sit it in a real scene. Each is a layered PSD with smart objects — the artwork sits on its own layer, so replacing it leaves the lighting and shadow untouched.