1. Different format sizes
1. jpg format: jpeg format, which is a format that changes the image quality and file size through compression.
2. png format: png can perform lossless compression of images, and the compression volume is much smaller than jpg format.
3. bmp format: the standard image format used in Windows.
Second, different scopes of application
1. jpg format: Deteriorated images after compression cannot be restored, and are used in digital images and photos on the Web.
2. PNG format: Supports transparency effects and can define 256 transparent levels for the original image, allowing the edges of the color image to blend smoothly with any background, thereby completely eliminating jagged edges.
3. bmp format: Since it cannot be compressed, the disadvantage is that the file size is too large, and it is used for Windows wallpapers, etc.
Extended information:
Other formats of pictures:
EXIF format
In fact, it is the same as JPEG format, except for saving image data , it can also store exposure data and incidental information such as shooting date, aperture, shutter, flash data, and small-size images.
DXF format
DXF is the abbreviation of Drawing Exchange Format, and the extension is. dxf is the graphics file format in AutoCAD. It stores graphics in ASCII mode and is very accurate in expressing the size of graphics. It can be called and edited by large software such as Corel Draw and 3DS.
Baidu Encyclopedia-Image format