PNG (Portable Network Graphics) is a digital image format supporting lossless compression and transparency. Unlike JPEG which loses quality through compression, PNG maintains full image quality at the cost of larger file sizes. PNG's transparency support makes it ideal for logos, graphics, and images requiring background flexibility. Municipal communications use PNG for official logos, icons, and graphics where quality and transparency matter. PNG files work well for web graphics and documents but create larger files than JPEG for photographs. Understanding image formats helps staff select appropriate formats for different purposes, balancing quality requirements with file size and web performance considerations.