Tools & Wizards About Us
aqicn.org screenshot

Report Summary

  • 23

    Performance

    Renders faster than
    41% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 73

    SEO

    Google-friendlier than
    31% of websites

aqicn.org

Beijing Air Pollution: Real-time Air Quality Index

Page Load Speed

5 sec in total

First Response

946 ms

Resources Loaded

3.4 sec

Page Rendered

594 ms

aqicn.org screenshot

About Website

Welcome to aqicn.org homepage info - get ready to check Aqicn best content for China right away, or after learning these important things about aqicn.org

Real-time air pollution index for 100+ countries

Visit aqicn.org

Key Findings

We analyzed Aqicn.org page load time and found that the first response time was 946 ms and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

aqicn.org performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

34/100

10%

LCP (Largest Contentful Paint)

Value3.5 s

64/100

25%

SI (Speed Index)

Value10.5 s

7/100

10%

TBT (Total Blocking Time)

Value5,590 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.504

16/100

15%

TTI (Time to Interactive)

Value19.1 s

3/100

10%

Network Requests Diagram

946 ms

style.min.css

310 ms

bundle.min.js

624 ms

adsbygoogle.js

154 ms

style.min.css

475 ms

Our browser made a total of 64 requests to load all elements on the main page. We found that 27% of them (17 requests) were addressed to the original Aqicn.org, 16% (10 requests) were made to Googleads.g.doubleclick.net and 9% (6 requests) were made to Tpc.googlesyndication.com. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Api2.waqi.info.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.7 MB (66%)

Content Size

4.1 MB

After Optimization

1.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Aqicn.org main page is 4.1 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 60% of websites need less resources to load. HTML takes 2.4 MB which makes up the majority of the site volume.

HTML Optimization

-91%

Potential reduce by 2.2 MB

  • Original 2.4 MB
  • After minification 2.4 MB
  • After compression 216.0 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 2.2 MB or 91% of the original size.

Image Optimization

-2%

Potential reduce by 11.0 kB

  • Original 561.7 kB
  • After minification 550.7 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. Aqicn images are well optimized though.

JavaScript Optimization

-44%

Potential reduce by 511.8 kB

  • Original 1.2 MB
  • After minification 1.2 MB
  • After compression 647.0 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 511.8 kB or 44% of the original size.

CSS Optimization

-18%

Potential reduce by 1.8 kB

  • Original 9.9 kB
  • After minification 9.9 kB
  • After compression 8.1 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. Aqicn.org needs all CSS files to be minified and compressed as it can save up to 1.8 kB or 18% of the original size.

Requests Breakdown

Number of requests can be reduced by 26 (43%)

Requests Now

61

After Optimization

35

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 61 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Aqicn. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

946 ms

style.min.css

style.min.css

310 ms

bundle.min.js

bundle.min.js

624 ms

adsbygoogle.js

adsbygoogle.js

154 ms

style.min.css

style.min.css

475 ms

ispritflags.css

ispritflags.css

341 ms

mailing-dyn.740fe2cfc24722505254.js

mailing-dyn.740fe2cfc24722505254.js

352 ms

jquery-3.4.1.min.js

jquery-3.4.1.min.js

669 ms

bundle.min.js

bundle.min.js

846 ms

tingle.min.js

tingle.min.js

549 ms

logo.png

logo.png

909 ms

locate.png

locate.png

183 ms

search.png

search.png

186 ms

mapb2.png

mapb2.png

187 ms

gaia-a12-package.jpg

gaia-a12-package.jpg

955 ms

show_ads_impl.js

show_ads_impl.js

260 ms

isprt-web.png

isprt-web.png

238 ms

main.web.png

main.web.png

281 ms

nearest

nearest

906 ms

1451

1451

1097 ms

map.6a3294da4ead1a7be9c6.js

map.6a3294da4ead1a7be9c6.js

515 ms

zrt_lookup.html

zrt_lookup.html

65 ms

ads

ads

183 ms

ads

ads

562 ms

ads

ads

557 ms

ads

ads

518 ms

ads

ads

509 ms

ads

ads

484 ms

bluesky-banner-panoramic-dark.jpg

bluesky-banner-panoramic-dark.jpg

170 ms

1.png

1.png

235 ms

1.png

1.png

216 ms

2.png

2.png

216 ms

here

here

631 ms

2.png

2.png

134 ms

194.png

194.png

167 ms

193.png

193.png

164 ms

193.png

193.png

166 ms

194.png

194.png

173 ms

193.png

193.png

134 ms

194.png

194.png

164 ms

nessie_icon_tiamat_white.png

nessie_icon_tiamat_white.png

110 ms

load_preloaded_resource.js

load_preloaded_resource.js

124 ms

abg_lite.js

abg_lite.js

126 ms

window_focus.js

window_focus.js

125 ms

qs_click_protection.js

qs_click_protection.js

132 ms

ufs_web_display.js

ufs_web_display.js

44 ms

3ce8c4eab42230976bac8dfb895e1176.js

3ce8c4eab42230976bac8dfb895e1176.js

100 ms

icon.png

icon.png

41 ms

8741269557722925928

8741269557722925928

235 ms

analytics.js

analytics.js

64 ms

us.svg

us.svg

76 ms

ads

ads

371 ms

ads

ads

529 ms

collect

collect

131 ms

css

css

38 ms

js

js

60 ms

bounds

bounds

391 ms

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrw2IJllpy8.woff

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrw2IJllpy8.woff

18 ms

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrwEIJllpy8.woff

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrwEIJllpy8.woff

23 ms

activeview

activeview

99 ms

wJiNEMIFAPB28UFvxM_UYtYFK_ILnv1_rxRzUTsn-Pg.js

wJiNEMIFAPB28UFvxM_UYtYFK_ILnv1_rxRzUTsn-Pg.js

12 ms

sdk.js

sdk.js

28 ms

sdk.js

sdk.js

6 ms

43 ms

Accessibility Review

aqicn.org accessibility score

76

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

High

Heading elements are not in a sequentially-descending order

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Tables and lists

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

Impact

Issue

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

aqicn.org best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

aqicn.org SEO score

73

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Mobile Friendly

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/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Aqicn.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Aqicn.org 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

aqicn.org

Open Graph data is detected on the main page of Aqicn. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: