What type of files does a file extension .png commonly indicate?

The .png file extension indicates image files. PNG stands for Portable Network Graphics, which is a format used for images that supports lossless data compression. This means that when a PNG image is saved, it retains all the original image quality without any loss of detail, making it ideal for images that require transparency or detailed graphics, such as logos or artwork. The PNG format is widely supported across different platforms and is commonly used for web graphics due to its ability to handle complex images and transparency. Understanding file extensions like .png is essential for managing and categorizing digital content effectively.