touch a variety of pictures

Every day on the Internet we have to touch a variety of pictures, some of them are clear and some are fuzzy, some are large memories, some are small memories,convert scanned pdf to word text rtf online some are static pictures and dynamic pictures, so what is the difference between them? What is the format? Let's take a look.


Currently, the most common and most commonly used format has two main features.

(1) support full color: full color is 16.77 million colors, higher than the 256 colors supported by GIF, the color is very rich, there is a continuous color, in a variety of details such as gradient, friction, shadows and other surfaces are very good.

(2) Efficient Compression:It is actually a destructive compression format.jpg to pdf converter and combine Simply understood, it is compressed every time it is saved. The more times it is saved, the lower the quality of the image.

These two main features can be guaranteed to have a very high compression rate at the same time can maintain a very rich image, that is, in order to occupy the minimum system space at the same time in order to ensure that a better image quality.combine jpg to pdf converter (Generally, we are required to take pictures, post pictures on the Internet, and look at pictures on picture websites because of this format.)

2. GIF

Our biggest impression of this format is GIF, but it has four main features.

(1) GIF only supports images with up to 256 colors (not for colorful images, but for images with more different blocks of color, such as cartoons, text, logos, etc. with fewer colors)

(2) gIF uses lossless data compression for storage and can generate very small files without affecting image quality

(3) supports transparent colors, which allows the image to appear on the background (JPEG does not support this).

(4) in a GIF file can be stored in multiple color images (can be analyzed by creating Chinese animation that is dynamic analysis of the picture, which is because it is one of the most prominent corporate features)

3. PNG

These images were originally called "Portable Network Graphics", its characteristics are as follows.

(1) support full-color (the same as JPEG)

(2) support for transparent format (i.e., support for 256 degrees of transparency of transparent charts, while GIF supports only one transparent color)

(3) support for lossless compression (lossless compression, compression efficiency is good, but larger than the JPEG format)

4. RAW

RAW is not data processing, not effectively compressed format, but also a digital product camera negative format. That is, almost always unprocessed and directly from the CCD or CMOS (the camera's sensor) on the information obtained

So its main feature is to provide a greater flexibility for the post-processing of the picture.

Nowadays, our cell phones are getting more and more advanced and also support RAW format pictures. If you want to post-process the captured images on professional software, it is recommended that you can change the output format to RAW format, but this format is not compressed, so it is larger and takes up more memory.

After reading the above four image formats, do you have a clearer understanding of images? If the above is helpful to you.