How to view the https digital certificate of a website

As title

1. Open the Chrome browser and enter the URL you want to grab the https certificate. Here we take Zhihu as an example.
2. Click the lock button on the left side of the browser address bar, as shown below
   
3. Click the "Connection is secure" option, as shown below
   
4. Click the "Certificate Valid" tab, as shown below
   
5. View basic information and details
   
6. Click on the details to download the certificate.
7. After downloading the certificate, double-click it to view the certificate in the keychain of the mac system.
8. The certificate information can also be viewed through the keychain, and visual inspection is more detailed than the website version.

Reference from:

• https://www.cnblogs.com/oc-bowen/p/5896041.html
• https://blog.csdn.net/mweibiao/article/details/83446050
• http://www.hg-news.cn/shouji/202002/8570.html