The poster is often seen from a distance; the flyer is read by hand. Reducing the same image alone may not be enough for both uses. It should change content decisions where the design will be seen, whether the person will stand and how long they will have time to read the message.
Write the main message in one sentence
The basic knowledge of the event, product or campaign should be easily chosen. When the title, date, location, and action call competes of the same size, the eye cannot find where to look. First, list the most important information, then the details necessary for the decision. Using capital letters and bold writing in each area does not create emphasis; it equates priorities.
Study in real size and distance
A close-up work on the screen may appear legible because it has small text. Evaluate the poster from the intended distance to the extent that the flyer will be held. Do not check the contrast on the single color screen. Print floor and ambient light can also affect visibility.
Make the next step applicable
A short address, open contact information, or a suitable QR code may be used. However, do not assume that small QR code will be used on a remote-viewed and moving banner. The margin and print quality of the code must be tested in the flyer; the target link must be opened before publication.
Define poster and flyer as two separate adaptations during the bidding phase. Measure and message change may require a new placement. Adding spelling control, date, location, contact information, and manufacturer's print conditions to the approval list is just as important as aesthetic evaluation.