Access beijing-air.com. 北京空气质量报告 - 北京空气污染指数、PM2.5实时数据查询

beijing-air.com

1853 ms

mdevice.js

634 ms

main_style_wide_c.css

1061 ms

adsbygoogle.js

157 ms

stat.php

1759 ms

Our browser made a total of 51 requests to load all elements on the main page. We found that 31% of them (16 requests) were addressed to the original Beijing-air.com, 14% (7 requests) were made to Pagead2.googlesyndication.com and 10% (5 requests) were made to Tpc.googlesyndication.com. The less responsive or slowest element that took the longest time to load (20.2 sec) belongs to the original domain Beijing-air.com.

Content Size

466.5 kB

After Optimization

375.4 kB

In fact, the total size of Beijing-air.com main page is 466.5 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 30% of websites need less resources to load. Images take 329.5 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 18.8 kB

Original 25.0 kB
After minification 20.9 kB
After compression 6.2 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 4.1 kB, which is 16% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 18.8 kB or 75% of the original size.

Image Optimization

-16%

Potential reduce by 51.4 kB

Original 329.5 kB
After minification 278.0 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, Beijing Air needs image optimization as it can save up to 51.4 kB or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-10%

Potential reduce by 9.6 kB

Original 98.5 kB
After minification 98.2 kB
After compression 88.9 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. This website has mostly compressed JavaScripts.

CSS Optimization

-83%

Potential reduce by 11.2 kB

Original 13.5 kB
After minification 10.7 kB
After compression 2.3 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Beijing-air.com needs all CSS files to be minified and compressed as it can save up to 11.2 kB or 83% of the original size.

Requests Now

After Optimization

The browser has sent 44 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Beijing Air. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and as a result speed up the page load time.