Shao Jun: Web Site Diagnostics Impact page Open time of the three cancer

Engaged in the site are aware of the site user experience is very important, which we do in the SEO inside is also the key to the emphasis on many times the core factors, and search engines are constantly adjusting in this regard to make further improvements, are hoping to give users a good browsing experience, The first element that can affect the browsing experience for our site is the issue of page opening time. A page has not been able to open in about 5-8 seconds, I think we all have no patience to wait, direct closure, this also increased the bounce rate, but also the user experience is not good performance, then how do we analyze the opening time of our site and access speed, online there are a lot of online speed tools, I want to introduce here is Baidu statistics with the website speed diagnostic function.

I use the Web site of the virtual host is million nets, according to million network technician is in the intelligent multi-wire room (because before the blog because of the problem of the window advertising requirements million network replacement server, so switch to the intelligent multi-wire room), the following figure is the diagnosis of some of the data.

　　

The test data for the Netcom Point page open time 0.39 seconds, more than 4.7% of the site open for a long time, while the telecom point page open time 0.65 seconds, more than 8.1% of the site opened for a long time, from the diagnostic data to see the network of Netcom's users to open faster than the telecommunications faster, but in my telecommunications broadband use of the situation, The home page is basically in 3-5 seconds to open completely, visit speed is good, but the diagnosis score is not high, the following also gave a diagnostic recommendations, summed up the impact of the page open the three major aspects, and these are also we do when the site need to pay attention to some of the points, I We do Web site optimization can be based on these points to optimize the code structure and access speed.

　　First, connect the network

Page open, the less the number of connection requests, the faster the open, and my blog page opened the process, a total of 42 requests (more than 33% of the site request more than the number of requests), can save 18 times the connection. Also subdivided a few aspects.

1, merge domain name. It is recommended to merge domain names with only 1 resources under other domain names

2, Merge JS. Merge the same domain name JS, you can reduce the number of network connections.

3, Merge CSS. Merging the CSS under the same domain name reduces the number of network connections.

4, Cache static resources. Static resources with little change can set client caching and reduce requests.

5, the use of CSS Sprite. Using CSS Sprite technology can reduce the number of requests.

　　Second, download the page

The process of sending back a Web page to a server is affected by the size of the page, and the smaller the page, the faster. While my Site page is open, download 175.9 KB (more bytes than 23% sites), you can reduce the number of 10.4 KB. This requires a focus on adjustment. And the main is to use the method of compressing elements, using compression technology, reduce the volume of elements, improve speed.

　Third, open the page

The user browser opens the page the process, is affected by the page content size, the design and so on. This aspect mainly starts from the following two details:

1, JS location. JS at the end of the page, you can speed up the page opening speed.

2, picture size statement. If the size of the picture is not defined, the page needs to be rendered again, and the speed is affected.

Although the page opening speed is also related to the host itself configuration and environment and other factors, but the most important factor is in the website itself, so we optimize the internal structure of the site and the code is very necessary, the above three aspects are the most direct and most common impact page open speed, maybe some you have done good enough, Perhaps some of the details have not been noticed, then you can proceed from these details to improve.

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