What is the Most Common Standard Poster Size? Here's a chart of the most common standard poster sizes, printing methods and names. The three main types are displayed in an infographic below - each with its different dimensions based on printer type used . One important tip to keep in mind when picking your size is that some printers have their own “Standard Sizes” or also known as called paper formats where they print best at certain ratios which will suit them perfectly while others work well for multiple prints without any issues .