1、JPEG
JPEG(JPG) is a common image compression format and an image compression standard jointly formulated by the International Organization for Standardization (ISO) and the International Telecommunication Union (ITU). JPEG files usually have the extension ".". Jpg "or" jpeg”。
2. Papua New Guinea
PNG (Portable Network Graphics) is a lossless compressed bitmap graphics format, which was developed by PNG Development Group in 1995. It is designed to replace the GIF format, support more colors and transparency, and is not restricted by patents. PNG format supports 24-bit true color images, 8-bit grayscale images and 8-bit indexed color images, and also supports Alpha channel transparency, which can realize the transparency effect of images.
PNG format also supports sub-pixel accuracy of images, and more detailed information can be stored in images. Because PNG format is lossless compression, the image quality will not be affected by compression. PNG format is widely used in web design, electronic publishing, image processing and other fields.
3、GIF
GIF (Graphic Interchange Format) is a common image file format, which supports animation and transparency and can compress the image file size. GIF files are usually used to display simple animations on web pages, such as small icons or simple animated logos. GIF files can contain multiple image frames, which can be played in a specified order to create animation effects.
GIF files also support transparency, which means that some parts of the image can become transparent, so that they will disappear in the background. GIF files usually use a 256-color palette, which means that they can compress the file size without sacrificing image quality.
4. Bone morphogenetic protein
BMP is one of the most commonly used image formats in Windows operating system. It is a lossless bitmap image format, which can store images with color depth of 1, 4, 8, 16, 24 or 32 bits. The advantage of BMP format is simple and easy to use, but the disadvantage is that the file size is large and it is not suitable for transmission on the network.
5、TIFF
TIFF is a lossless bitmap image format, which can store images with color depth of 1, 4, 8, 16, 24 or 32 bits. The advantage of TIFF format is that it supports multiple compression methods and can store high-quality images, but the disadvantage is that the file size is large and it is not suitable for transmission on the network.
6、WEBP
WEBP is a new image format developed by Google. It adopts advanced compression algorithm, which can reduce the image file size to half or even smaller. The advantage of WEBP format is that the file is small and the loading speed is fast, but the disadvantage is that its compatibility is not as good as other formats.
7、HEIF
HEIF is a new image format developed by MPEG. It adopts advanced compression algorithm, which can reduce the image file size to half or even smaller. HEIF format has the advantages of small file size, fast loading speed, and supports a variety of metadata and dynamic pictures, but the disadvantage is that its compatibility is not as good as other formats.