What format is jpg

The JPG format is one of the most commonly used image file formats, a lossy compression format; its full name is JPEG (Joint Photographic Experts Group), and the file suffix is ​​".jpg" or ".jpeg". The following article will give you a brief introduction to the JPG format, I hope it will be helpful to you.

JPG, the full name of JPEG, is the most commonly used image file format. It is organized by a software development association. It is a lossy compression format that can compress images. When compressed into a small storage space, duplicate or unimportant data in the image will be lost, thus easily causing damage to the image data. In particular, using an excessively high compression ratio will significantly reduce the quality of the image restored after final decompression. If you pursue high-quality images, it is not advisable to use an excessively high compression ratio.

But JPEG compression technology is very advanced. It uses lossy compression to remove redundant image data, and can display very rich and vivid images while obtaining extremely high compression rates. In other words, it can be used Minimal disk space for better image quality. And JPG is a very flexible format, with the function of adjusting image quality, allowing files to be compressed with different compression ratios, and supports multiple compression levels. The compression ratio is usually between 10:1 and 40:1. The compression ratio The larger the compression ratio, the lower the quality; conversely, the smaller the compression ratio, the better the quality.

The advantages of JPG files are small size and good compatibility, because most programs can read this kind of file. This is because the JPG format is not only an industry standard format, but also a web standard. file format. JPG files have such convenient conditions, no wonder they are highly praised by amateur players.

The above is the detailed content of What format is jpg. For more information, please follow other related articles on the PHP Chinese website!