Access beijingair.sinaapp.com. 中国空气质量历史数据 | 中国气象历史数据

Report Summary

About Website

Welcome to beijingair.sinaapp.com homepage info - get ready to check Beijingair Sinaapp best content for China right away, or after learning these important things about beijingair.sinaapp.com

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name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

76/100

10%

LCP (Largest Contentful Paint)

Value2.3 s

94/100

25%

SI (Speed Index)

Value4.4 s

74/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value2.3 s

99/100

10%

beijingair.sinaapp.com

1835 ms

jumbotron-narrow.css

209 ms

bootstrap.min.css

30 ms

Our browser made a total of 3 requests to load all elements on the main page. We found that 67% of them (2 requests) were addressed to the original Beijingair.sinaapp.com, 33% (1 request) were made to Cdn.staticfile.org. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Beijingair.sinaapp.com.

Content Size

14.5 kB

After Optimization

4.4 kB

In fact, the total size of Beijingair.sinaapp.com main page is 14.5 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. HTML takes 13.1 kB which makes up the majority of the site volume.

HTML Optimization

-69%

Potential reduce by 9.0 kB

Original 13.1 kB
After minification 12.1 kB
After compression 4.1 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 9.0 kB or 69% of the original size.

CSS Optimization

-78%

Potential reduce by 1.1 kB

Original 1.4 kB
After minification 691 B
After compression 312 B

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. Beijingair.sinaapp.com needs all CSS files to be minified and compressed as it can save up to 1.1 kB or 78% of the original size.

Requests Now

After Optimization

The browser has sent 2 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Beijingair Sinaapp. According to our analytics all requests are already optimized.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Search Engine Optimization Advices

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

High

Document uses legible font sizes

Language and Encoding

Language Detected

ZH
Language Claimed

ZH
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Beijingair.sinaapp.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it matches the claimed language. Our system also found out that Beijingair.sinaapp.com main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

beijingair.sinaapp.com

Open Graph description is not detected on the main page of Beijingair Sinaapp. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: