2. After opening, find the group that wants to generate the QR code in the main interface of WeChat, and click to enter the group.

3. After joining the group, there are three points in the upper right corner of the group interface. This is the selection menu key. Click to enter the setting menu interface.

4. After entering the setting interface, find "Group QR code" in the interface and click Enter.

5. After clicking enter, the group QR code will be automatically generated. Just save the screenshot and send it to the person you want to notify, and scan the code to enter the group chat.

Extended data:

In the research of two-dimensional code standardization, International Association of Automatic Identification Manufacturers (AIM) and American Standardization Association (ANSI) have completed the symbol standards of PDF4 17, two-dimensional code, Code 49, Code 16K and Code One.

The International Committee of Standards and Technology and the International Electrotechnical Commission have also established the Technical Committee for Automatic Bar Code Recognition (ISO/IEC/JTC1/SC31), and formulated the international standard for two-dimensional code (ISO/IEC 18004: 2000 "Automatic Recognition and Data Acquisition Technology-Bar Code Symbol Technical Specification-Two-dimensional Code"). Draft ISO/IEC standards for two-dimensional codes such as PDF4 17, Code 16K, Data Matrix and Maxi Code were drafted.

In the R&D and production of two-dimensional code equipment, reading equipment and symbol generation equipment produced by equipment manufacturers in the United States, Japan and other countries have been widely used in various two-dimensional code application systems. As a brand-new information storage, transmission and identification technology, QR code has attracted the attention of many countries in the world since its birth.