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This article mainly introduces how to distinguish HTTP and HTTPS, the sample code introduced in the article is very detailed, has a certain reference value, interested friends must read it!

What are HTTP and HTTPS?

We use a browser to visit a website page. In the address bar of the browser, we will see a string of URLs, as shown in the figure below.

The URL of a website is divided into two parts: the communication protocol and the domain name address.

Domain names and addresses are well understood, different domain names and addresses represent different pages in the website, and communication protocols are simply the language of communication between the browser and the server. The communication protocols in websites are generally HTTP and HTTPS protocols.

HTTP protocol

HTTP is a network protocol that uses plaintext data transmission. HTTP protocol has always been the most mainstream web protocol, but the development of the Internet today, HTTP protocol plaintext transmission will allow users to have a very large security risk. Imagine if you were shopping on an HTTP website and you had to enter your bank card number and password on the page, and then you submitted the data to the server to make the purchase. If this is appropriate, your transmission is intercepted by a third party, and your bank card number and password will be obtained by this interceptor due to HTTP plaintext data transmission. Do you still dare to shop on an HTTP website? Would you leave your personal information on an HTTP site?

HTTPS protocol

HTTPS protocol can be understood as an upgrade of HTTP protocol, which is to add data encryption on the basis of HTTP. Data is encrypted before transmission and sent to the server. In this way, even if the data is intercepted by a third party, your personal information is still safe because the data is encrypted. This is the biggest difference between HTTP and HTTPS.

In fact, if you are careful enough, you will find that many large Internet websites, such as Baidu, Taobao, Tencent, have long replaced HTTP with HTTPS.

Other Differences Between HTTP and HTTPS

Encrypted data transmission is an essential difference between HTTP and HTTPS, and in fact, there are other differences between HTTPS websites and HTTP websites.

When you visit an HTTP site using Chrome, you will notice that the browser displays an "unsafe" security warning for the HTTP site, indicating that the site you are currently visiting may be at risk.

If you visit an HTTPS website, the situation is completely different. You'll notice that the browser's address bar turns green, the company name appears in the address bar, and a "security lock" icon appears above the address bar. All of this gives users a great visual security experience. The following is how EV certificates are displayed in different browsers.

In addition to the visual difference between browsers, HTTPS websites and HTTP websites have a very important difference, which is the promotion of search rankings, which is also the focus of many webmasters.

Baidu and Google search engines have made it clear that HTTPS sites will be an important weight indicator for search rankings. This means that HTTPS websites have an advantage over HTTP websites in search rankings.

HTTPS websites have many advantages over HTTP websites. HTTP obviously cannot adapt to today's Internet era. It can be predicted that HTTP will be completely replaced by HTTPS in the near future.

Here's how to distinguish between HTTP and HTTPS. Thank you for reading! Hope to share the content to help everyone, more relevant knowledge, welcome to pay attention to the industry information channel!

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