How can the website be optimized? Let your website fly
As the internet continues to evolve, the website plays an increasingly critical role as an important window for businesses and individuals to present their image, products and services. Some of the websites have had a poor experience with users because of their slow pace of access and have even affected the loss of potential clients. We are often confronted with web-site “cards” problems, such as slow-opening, long loading and even white screens, which not only affect the user experience but also seriously affect the seo ranking of the website。
How can a “card” website be optimized and its speed increased? Today, we will offer you some practical optimisation programmes that will help you improve the performance of the website in all its aspects and make it more fluid and rapidly loaded。
I. Analysis of web-site performance bottlenecks and identification of causes of carden
Before optimizing the website, we need first to know where the bottlenecks are. Specialized tools such as google's pagespeedinsights and gtttrix can be used to test the speed and performance of the website, which can analyse the loading times of each element of the website's loading process and help you identify the specific reasons for the slow pace of the site。
The following are common performance bottlenecks:
The server response time is slow: when the server is poor or distant from the user, the speed of response is naturally affected, resulting in a long load of web pages。
Images and multimedia files are too large: if too big, uncompressed pictures or video files are embedded in the web page, the loading speed of the web page is slowed。
Js and css files are not compressed: if javas is on the web pageCript and css files are not compressed and optimized, and their volume is too large and increases loading time。
No cache: cache is an important means of increasing the speed of loading the website. Without effective use of the cache, users reload all content and waste time and traffic every time they visit the site。
The analysis of web-site performance bottlenecks allows for more targeted optimization。
Selection of suitable servers and cdn acceleration
The choice of servers is crucial to the speed of the website. A server with poor performance is difficult to load regardless of how well the site is optimized. The selection of high-performance, stable servers and the selection of suitable servers according to the geographic location of the users would greatly increase the speed of access to the site。
The acceleration of the cdn is also an effective means of increasing the speed of the website. The cdn has significantly reduced loading time and increased the speed of web-page response by placing static resources (e. G., pictures, css, js) of the website on a global nodal server, from which users can access their nearest node server。
Iii. Optimizing pictures, compressing file sizes
Pictures are one of the most common resources on the web page, but unoptimized images often account for a large part of the time on which the web page is loaded. To increase the speed at which web pages are loaded, we need to optimize images。
Picture format selection: pictures in different formats have different sizes and quality expressions. In general, the png format is suitable for transparent background maps, jpeg is suitable for colour-rich photographs, and the webp format is appropriate for most scenes to ensure a higher quality that effectively reduces the volume of documents。
Photo compression: pictures, whatever the format used, should be compressed to reduce file size. Some online tools (e. G. Tinypng, imageoptim, etc.) can be used to compress images and maintain a better image quality in terms of size。
Lazyness: lazyness means that when a user views a page, it is loaded only when the picture enters the view. This will effectively reduce the amount of resources required to load the page at the first time and increase the speed of loading the website。
By optimizing pictures, we can reduce the loading time of web pages and enhance the browsing experience of users。
Iv. Streamlining javasCript and css files, avoid redundancy code
JavasCript and css files are the dynamic effects and style files common on the web page, but if they are too large and contain redundant codes, they also affect the speed of loading the website. The streamlining and optimization of js and css documents is therefore an important step in increasing the speed of the website。
Compress and merge files: use tools (e. G. Ugliftyjs, cssnano, etc.) for javasCript and css files are compressed to remove excess spaces, notes, etc. And to reduce the volume of documents. You can also use multiple javasCript and css files are merged into one file, reducing the number of http requests。
Step on js file: javasCript files are a resource to block page rendering, and therefore the impact on page loading can be reduced by setting js files to async or defer。
Delete unnecessary codes: for unused js or css codes, they should be deleted in a timely manner, avoiding loading unnecessary content and reducing the volume of documents。
V. Enable browser caches
The browser cache is one of the effective means of increasing the speed of loading the site. When the browser cache is enabled, when the user accesses the site for the second time and afterwards, the browser directly loads the local cache resources without having to retake them from the server, thereby significantly increasing the speed of the page loading。
By setting up appropriate cache strategies, you can make static resources (e. G., pictures, css, jss, etc.) available to the user browser for some time, thereby reducing the duplication of loads. Common cache controls include the use of the cache-control, expires phrases in http head。
Vi. Using gzip compression to increase the speed of loading the website
The gzip compression is currently the most common way to compress the content of the web pages, which can significantly reduce the size of the web-based documents and thus increase the speed at which they are loaded. The gzip compression compresses the content of the web page at the end of the server and then transmits the compressed content to the browser side via the http protocol, which, when received, automatically depresses and presents to the user。
The operation to enable the gzip compression is relatively simple and most servers support the gzip compression. All you need to do is use the gzip in the server configuration file, or use the relevant compression plugins when the site is developed, so that you can get the page content compressed. After compression, the size of the web page can normally be reduced by about 70 per cent, greatly increasing the speed of response。
Vii. Reduce http requests and optimize resource loading
Whenever a user requests a web page, the browser sends a http request to access various resources (e. G. HTML, css, js, pictures, etc.) on the web page. Each http request is time consuming, and therefore a reduction in the number of http requests is important for increasing the speed of loading the website。
You can reduce http requests by:
Consolidation of documents: consolidation of multiple css and js documents into one document, reducing the number of requests。
