JPEG和PSD之间的区别

1.联合图像专家组(JPEG)：
自1982年6月以来，ISO的第8工作组(WG8)一直在研究静态图像压缩和解压缩的标准。 1987年6月，提出了十种不同的彩色和灰度静态图像编码技术。基于离散余弦变换(DCT)的自适应变换编码技术获得了最佳的主观效果。

PEG适用于彩色和灰度静态图像。视频序列也可以通过静态图像的节庆编码和解码来处理，这种技术称为Motion JPEG。

2. Photoshop文件(PSD)：
PSD代表“ Photoshop文档”，它是一种特定于应用程序的专有格式，但是由于Photoshop在像素编辑世界中的主导地位，PSD已成为一种准标准。许多其他程序，甚至某些不是Adobe提供的程序，都将PSD作为一种附加文件格式支持-但通常以只读或导入/导出目的，而不是其真正的本机文件格式。

JPEG和PSD之间的区别：

S.No.	JPEG	PSD
1.	JPEG is the actually a standard format that is not tied to any application. Virtually all programs that deal with images are able to open and save in the JPEG format.	PSD is the native file format for a Photoshop. In PSD, you only have Photoshop that can open the file.
2.	It is a standard image format.	It is the document format for Photoshop.
3.	It can be viewed in a lot of applications.	It can not viewed in a lot of applications.
4.	It does not support layers.	It supports layers.
5.	It is supported by gadgets.	It is not supported by gadgets.
6.	It is less longer then PSD.	It is lot larger than JPEG.
7.	A JPEG is just a compressed bitmap.	while a PSD is PhotoShop file and thus retains all the project information such as the layers and history.
8.	It is compressed single layer image.	It is PhotoShop Document. It is an image with the editing layers saved with it.
9.	It is less popular photo editing software.	It is very popular photo editing software.