JPEG (Joint Photographic Experts Group) is a widely used method of lossy compression for digital images, particularly for those produced by digital photography. The degree of compression can be adjusted, allowing a selectable trade-off between storage size and image quality. JPEG typically achieves 10:1 compression with little perceptible loss in image quality. JPEG images are stored in the JPEG File Interchange Format (JFIF), which is the most common image format used by digital cameras and other photographic image capture devices. Because of its widespread support and relatively small file sizes, JPEG is the dominant format for storing and transmitting photographic images on the World Wide Web. The compression algorithm works by dividing the image into 8x8 pixel blocks and applying a Discrete Cosine Transform (DCT) to each block. The DCT converts the spatial representation of the image data into frequency components. High-frequency components, which are less visually significant, are then discarded, resulting in compression. The amount of compression is controlled by a quality setting, which determines how many high-frequency components are discarded. Lower quality settings result in smaller file sizes but also more noticeable artifacts, such as blockiness and blurring. JPEG is best suited for photographs and images with smooth gradations of color. It is less suitable for images with sharp lines and text, as the compression can introduce artifacts that degrade the clarity of these features.