Picture formats png, bmp, jpg, what's the difference?

1, jpg format: jpeg format, which is a format to change image quality and file size through compression.

2.png format: png can lossless compress images, and the compression volume is much smaller than jpg format.

3.bmp format: the standard image format used in Windows.

Second, the scope of application is different

1, jpg format: the degraded image after compression cannot be recovered, and it is used for digital images and photos on the network.

2.png format: supports transparency effect, and can define 256 transparency levels for the original image, so that the edge of the color image can be smoothly blended with any background, thus completely eliminating the jagged edge.

3, bmp format: because it can not be compressed, the disadvantage is that the file capacity is too large, used in Windows wallpaper and other aspects.

Extended data:

Other image formats:

Exchangeable image file

In fact, it is the same as JPEG format, the difference is that in addition to saving image data, it can also store exposure data such as shooting date, aperture, shutter and flash data, incidental information and small-size images.

DXF format

DXF is the abbreviation of graphic interchange format, and the extension is. DXF。 It is a graphic file format in AutoCAD. It stores graphics in ASCII code, which is very accurate in representing the size of graphics, and can be called and edited by large-scale software such as Corel Draw and 3DS.

Baidu Encyclopedia-Picture Format