Tools & Wizards About Us
aqicn.info screenshot

Report Summary

  • 23

    Performance

    Renders faster than
    41% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 73

    SEO

    Google-friendlier than
    31% of websites

aqicn.info

Beijing Air Pollution: Real-time Air Quality Index

Page Load Speed

5.7 sec in total

First Response

984 ms

Resources Loaded

4.2 sec

Page Rendered

596 ms

aqicn.info screenshot

About Website

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

Real-time air pollution index for 100+ countries

Visit aqicn.info

Key Findings

We analyzed Aqicn.info page load time and found that the first response time was 984 ms and then it took 4.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

aqicn.info performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

31/100

10%

LCP (Largest Contentful Paint)

Value3.6 s

60/100

25%

SI (Speed Index)

Value10.0 s

9/100

10%

TBT (Total Blocking Time)

Value3,910 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.419

23/100

15%

TTI (Time to Interactive)

Value16.6 s

5/100

10%

Network Requests Diagram

984 ms

style.min.css

318 ms

bundle.min.js

766 ms

adsbygoogle.js

382 ms

style.min.css

468 ms

Our browser made a total of 86 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Aqicn.info, 14% (12 requests) were made to Googleads.g.doubleclick.net and 14% (12 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (1.5 sec) relates to the external source Mapq.waqi.info.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.5 MB (63%)

Content Size

4.0 MB

After Optimization

1.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Aqicn.info main page is 4.0 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. 55% 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 213.0 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

-4%

Potential reduce by 23.5 kB

  • Original 657.6 kB
  • After minification 634.1 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

-34%

Potential reduce by 330.9 kB

  • Original 983.7 kB
  • After minification 983.7 kB
  • After compression 652.8 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 330.9 kB or 34% 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.info 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 35 (43%)

Requests Now

82

After Optimization

47

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 82 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 20 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

984 ms

style.min.css

style.min.css

318 ms

bundle.min.js

bundle.min.js

766 ms

adsbygoogle.js

adsbygoogle.js

382 ms

style.min.css

style.min.css

468 ms

ispritflags.css

ispritflags.css

323 ms

mailing-dyn.740fe2cfc24722505254.js

mailing-dyn.740fe2cfc24722505254.js

335 ms

jquery-3.4.1.min.js

jquery-3.4.1.min.js

704 ms

bundle.min.js

bundle.min.js

782 ms

tingle.min.js

tingle.min.js

481 ms

logo.png

logo.png

771 ms

locate.png

locate.png

202 ms

search.png

search.png

201 ms

mapb2.png

mapb2.png

203 ms

gaia-a12-package.jpg

gaia-a12-package.jpg

501 ms

show_ads_impl.js

show_ads_impl.js

467 ms

isprt-web.png

isprt-web.png

327 ms

main.web.png

main.web.png

232 ms

nearest

nearest

1466 ms

1451

1451

1269 ms

map.6a3294da4ead1a7be9c6.js

map.6a3294da4ead1a7be9c6.js

371 ms

bluesky-banner-panoramic-dark.jpg

bluesky-banner-panoramic-dark.jpg

413 ms

analytics.js

analytics.js

70 ms

check

check

1075 ms

here

here

1438 ms

zrt_lookup.html

zrt_lookup.html

195 ms

ads

ads

228 ms

1.png

1.png

158 ms

1.png

1.png

398 ms

2.png

2.png

420 ms

collect

collect

329 ms

2.png

2.png

328 ms

194.png

194.png

333 ms

193.png

193.png

333 ms

193.png

193.png

289 ms

194.png

194.png

289 ms

193.png

193.png

327 ms

194.png

194.png

332 ms

ads

ads

751 ms

ads

ads

481 ms

ads

ads

701 ms

ads

ads

301 ms

ads

ads

243 ms

js

js

68 ms

gen_204

gen_204

173 ms

pixel

pixel

68 ms

4843587504780304719

4843587504780304719

62 ms

abg_lite.js

abg_lite.js

33 ms

omrhp.js

omrhp.js

49 ms

Q12zgMmT.js

Q12zgMmT.js

55 ms

window_focus.js

window_focus.js

63 ms

icon.png

icon.png

27 ms

cookie_push_onload.html

cookie_push_onload.html

39 ms

qs_click_protection.js

qs_click_protection.js

63 ms

ufs_web_display.js

ufs_web_display.js

47 ms

pixel

pixel

362 ms

pixel

pixel

324 ms

62bHydCX.html

62bHydCX.html

112 ms

pixel

pixel

204 ms

15116211107228607446

15116211107228607446

127 ms

gen_204

gen_204

171 ms

ads

ads

281 ms

aqi.json

aqi.json

402 ms

ttep1hf2xTKPY5HV4abLvqDFRXZuZQmhABAIUKmOBs4.js

ttep1hf2xTKPY5HV4abLvqDFRXZuZQmhABAIUKmOBs4.js

46 ms

us.svg

us.svg

122 ms

activeview

activeview

117 ms

pixel

pixel

97 ms

pixel

pixel

41 ms

ads

ads

223 ms

pixel

pixel

51 ms

bounce

bounce

86 ms

pixel

pixel

44 ms

pixel

pixel

41 ms

rum

rum

41 ms

pixel

pixel

41 ms

rum

rum

34 ms

pixel

pixel

27 ms

activeview

activeview

72 ms

sodar

sodar

97 ms

sdk.js

sdk.js

60 ms

pixel

pixel

102 ms

sodar2.js

sodar2.js

5 ms

sdk.js

sdk.js

10 ms

runner.html

runner.html

39 ms

aframe

aframe

40 ms

pixel

pixel

90 ms

Accessibility Review

aqicn.info 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.info best practices score

67

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

Page has valid source maps

SEO Factors

aqicn.info 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.info 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.info 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.info

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: