What is the difference between a BMP file and a PSD file

BMP format.

BMP is an abbreviation for Bitmap, which is a standard image file format in the Windows operating system and can be supported by a variety of Windows applications. With the popularity of the Windows operating system and the development of rich Windows applications, the BMP bitmap format is naturally widely used. This format is characterized by the fact that it contains a lot of image information and is hardly compressed, but this leads to its inherent disadvantage - it takes up too much disk space.

Therefore, at present, BMP is more popular on a single machine.

PSD format.

This is the well-known Adobe company's image processing software Photoshop, a dedicated format for Photoshop Document (PSD). PSD is actually a graphic design piece of Photoshop"Draft diagrams", which contains a variety of layers, channels, masks, and other design samples, so that the next time you open the file, you can modify the previous design. Among the various image formats supported by Photoshop, PSD is much faster and more powerful than other formats.

Since Photoshop is becoming more and more widely used, we have reason to believe that this format will gradually become popular as well.

BMP is a bit of a piece.

PSD is a source file created with photoshotp or stored directly.

1. If it is CMYK color mode, you can't save the BMP file, you need to change CMYK to RGB color mode.

2. Click on the storage as in the Senpei file.

3. Enter the save page, select BMP format as save type, and then click Save this missing only.

4. After clicking on the pretending to be closed, the bmp format** will be saved.

The differences between BMP and JPG are as follows:

The difference between BMP and JPG is in the image size, BMP is not compressed, and the image file will be relatively large; The jpg format is the most widely used format on the internet because of its small file size and fast speed.

A standard bitmap format for Windows. The jpg format is also one of the most widely used ** formats, which uses a special lossy compression algorithm to remove the image color that is not easy to be detected by the human eye, and thus achieve a large compression ratio (can reach 2:1 or even 40:

JPEG Introduction

JPEG (Joint Photographic Experts Group) is a standard for compressing static images of continuous macro tones, and the file suffix is called jpg or jpeg, which is the most commonly used image file format.

It mainly adopts the joint coding method of ** coding (DPCM), discrete cosine transform (DCT) and entropy coding to remove redundant images and color data, which belongs to lossy compression format, which can compress the image in a small storage space, which will cause damage to the image data to a certain extent.

In particular, the use of excessively high compression ratios will reduce the quality of the images recovered after the final decompression bureau is out of service, and it is not advisable to use excessively high compression ratios if you are pursuing high-quality images.