In the modern age of the internet, the speed with which the site is loaded directly affects the user experience and the number of visits to the site. If a website is opened slowly, users tend to choose to leave, which not only affects the number of visits, but may also negatively affect the rate of conversion of the site. As a result, increasing the speed at which the website is loaded has become a task for each station owner and for business diversification. This paper will explore effective ways to optimize the speed of the website, particularly through the optimization of codes and pictures。
1. Code optimization
Optimizing codes is a key step in increasing the speed of loading the website. The front-end code for the website consists mainly of HTML, css and javasCript, etc., the backend code concerns the programming language of the server end. The following are specific recommendations for optimization:
1. 1 clear redundancy code
There may be many redundancies in website codes, including unused css categories, invalid javasCript function and excess HTML tags. Regular checks and clean-up of these redundant codes will not only reduce the volume of documents but also improve their maintenance。
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1. 2 merge and compress files
Multiple css and javasCript files are combined into one file, which reduces the number of http requests, thereby accelerating loading. At the same time, compression of codes using compression tools (e. G., gzip) can significantly reduce document size and increase load efficiency。
1. 3 use of a different step to load
For some javasThe cript file, which can be loaded by a different step, allows it to load the page without blocking the loading of other resources. By adding the `async ' or `defer ' attributes to the ``label, it is ensured that the script is loaded without prejudice to other elements。
1. 4 optimizing css selector
Complex css selector may cause the browser to spend more time rendering pages. Simplify the hierarchy of the selector to make it more efficient and speed the page。
Photo optimization
Pictures are one of the most common resources on the website, but they are also the main factors affecting loading speed. Optimizing pictures can effectively enhance website performance. The following are some recommendations for optimization:
2. 1 select the appropriate format
Different photo formats have advantages and disadvantages in terms of quality and file size. For images, jpeg is suitable for photographs, while png is suitable for graphic and transparent background images. The webp format is a newer format with a better compression effect and suitable for use in modern browsers。
2. 2 compressed pictures
Using a graphic compression tool, you can effectively reduce the file size of a picture without significantly reducing its quality. There are a number of online tools and software that can help to compress pictures and ensure that load time is reduced with visual effects。
2. 3 use of responsive pictures
Depending on the user device, the use of a responsive picture ensures that the appropriate image size is loaded. By means of `srcset ' properties, different images can be provided for different sizes of the screen, avoiding overloading on small screens。
2. 4 delayed loading
Delay loading technology allows the picture to be loaded when the user scrolls to the viewer instead of loading all of it when the page is initially loaded. This can significantly reduce initial loading time and enhance user experience。
3. Server and network optimization
In addition to the optimization of codes and pictures, servers and network settings also have an important impact on website speed。
3. 1 selection of suitable hosts
The selection of a stable and fast-paced host provider can provide assurance of the speed of loading the site. The performance of different host types (shared hosts, vps, cloud hosts, etc.) varies, and selection should be based on website traffic and demand。
3. 2 use of the content distribution network (cdn)
The cdn can distribute static resources of the website to servers around the globe, and users can access resources from servers that are closest to them. This can effectively reduce loading time and increase user access。
3. 3 optimization of databases
Regular optimization and clean-up of databases can increase the efficiency of queries and reduce the time taken to retrieve data if the site uses them. The performance of the database can be significantly enhanced through the use of indices, optimized query statements, etc。
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