For instance, there is the popular A-series format with A4, A5, A6, and A7, being the ideal sizes for many flyers. Of these three is the commonly used A4 size that measures 210 x 297 and is typically the size of choice for many flyers and folded leaflets.
On the other hand, there is also the Carré or square format, which is made up of Carré S (small), Carré M (medium), and Carré L (large), measuring at 105 x 105, 148 x 148, and 210 x 210 respectively. These ones offer enough space for minimal visuals and simple but strong text.
There is also the DL format which measures 99 x 210 mm or 3.86 x 8.27 in inches. Unlike the flyers in the A-series and Carré format, this particular size has a lesser width compared to its height. In fact, its vertical appearance is similar to a bookmark that you can actually use it not just as a promotional material but also an actual bookmark.
Below is a list of the different flyer formats for your printing reference.
Find more information about specific flyer formats
Carré L Flyers
Carré M Flyers
Carré S Flyers