In the world of computers, the term JPEG (Joint Photographic Experts Group) is a widely used compression technique that is used on photographic images. The amount of compression can be decided by choosing a balance between the image quality and its size. The JPEG Compression format actually applies to several different file types. Digital cameras and other image capturing devices use the widely used image format called JPEG/Exif. In contrast, JPEG/JFIF image format is used for functions such as transferring images or storing images with the help of the internet. These two image formats, however, are hardly ever distinguished from each other and are plainly called JPEG.
JPEG Compression: The Quality Trade-Off
The compression method used in JPEG compression is known as the 'lossy' compression technique. With this method, some information in the image will be permanently lost while being compressed. In JPEG compression, this is an unavoidable trade-off between image quality and the degree of compression. The 'Progressive JPEG' format is a slightly better alternative to standard JPEG compression where the data is compressed in progressively greater detail and in multiple areas of the image. This is suitable for large images that need to be shown using a slow connection. It allows a small preview of the total image while data is being fed in, however, not all software supports progressive JPEG files. Internet Explorer for example can display an image only after it has fully downloaded all of the data making up the image.
Eliminating the JPEG Quality Issue with PDF Compression
One of the advantages of JPEG compression is that is widely used and almost all programs, software and applications support JPEG file formats. Moreover, it takes hardly any space on your hard drive compared to uncompressed image formats. Still, high compression ratios cannot be achieved without severely diminishing the quality of the image and disrupting the content within it. Professionals should avoid using JPEG compression file formats in favor of PDF compression so that the quality of the pictures they take or develop remains untouched. PDF compression is a lossless format that eliminates the size-quality trade-off: You can test the difference with our online PDF compression tool by clicking on the 'Try It Online' button above.