What are the browser requirements for website design?

　　 1. What is a headless browser?

Headless browsers have been around for about a decade. They are applications based on standard rendering engines (Chrome, Webkit, Gecko) that can display website content without actually displaying it. They lack visual user interfaces and brains. Initially, headless browsers were developed to test websites quickly and automatically. Typically, this is achieved through call level interfaces (CLI) or defined interfaces (APIs). Upon request, error messages will be sent as screenshots or other specified methods. Since the introduction of headless browsers, the developer community has had different views on them. Some people think this technology is nonsense, but it is reasonable to test its design and application on a series of "ordinary" browsers. After all, visitors don't use headless browsers. PhantomJS is one of its most popular types, and it also generates error messages that do not exist in regular browsers. This is only partially useful.

As the basic technology on the server side, Node.js is also very popular among the creators of headless browsers. Zombies are modern specimens of this type, whose name is implied in the head. Contrary to what the name implies, ZombieJS is said to be very fast and is an excellent choice for large-scale and efficient testing. Confident headless browser users appreciate the ability to run a large number of automated tests in a fast and simple way through headless browsers or through all these service groups. Headless browsers are mainly supported by developers of complex website applications targeting a large number of target audiences. Generally, website designers with moderate product and customer range do not need economies of scale, which means they can choose traditional ways.

　　 2. Headless browser: Google expanded its revenue.

In 2009, the search engine giant Google proposed the idea of using headless browsers in a completely different way. The problem people face is that they cannot index content generated dynamically through AJAX. Finally, these contents can become indexable websites only after they are generated, because we need to correctly render them with browsers to make them clearly visible. Therefore, search engines need an internal browser to provide content. That said, Google has been using headless browsers since then. As long as page operators take some precautions, they can read the content that needs front-end interaction to display. Bing is using a similar technology. Now the performance of browser engines is getting higher and higher. What does this mean for headless browsers? Yes, their performance is getting stronger and stronger.