Tools & Wizards About Us
waqi.info screenshot

Report Summary

  • 28

    Performance

    Renders faster than
    48% 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

  • 92

    SEO

    Google-friendlier than
    74% of websites

waqi.info

World's Air Pollution: Real-time Air Quality Index

Page Load Speed

4 sec in total

First Response

480 ms

Resources Loaded

2.9 sec

Page Rendered

688 ms

waqi.info screenshot

About Website

Click here to check amazing Waqi content for Iran. Otherwise, check out these important facts you probably never knew about waqi.info

How polluted is the air today? Check out the real-time air pollution map, for more than 80 countries.

Visit waqi.info

Key Findings

We analyzed Waqi.info page load time and found that the first response time was 480 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

waqi.info performance score

28

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.9 s

88/100

10%

LCP (Largest Contentful Paint)

Value8.0 s

2/100

25%

SI (Speed Index)

Value8.1 s

21/100

10%

TBT (Total Blocking Time)

Value3,490 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.012

100/100

15%

TTI (Time to Interactive)

Value16.8 s

5/100

10%

Network Requests Diagram

waqi.info

480 ms

merriweather.css

301 ms

map.82b3c23c30215535f00a.js

782 ms

app.fb0fa2839c18c3000116.js

1115 ms

map.8f5a7c093fffe9a8e161.css

311 ms

Our browser made a total of 92 requests to load all elements on the main page. We found that 11% of them (10 requests) were addressed to the original Waqi.info, 43% (40 requests) were made to Server.arcgisonline.com and 15% (14 requests) were made to Googleads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (1.5 sec) relates to the external source Aqicn.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 180.2 kB (10%)

Content Size

1.7 MB

After Optimization

1.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Waqi.info main page is 1.7 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. Javascripts take 836.2 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 102.1 kB

  • Original 127.2 kB
  • After minification 127.1 kB
  • After compression 25.1 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 102.1 kB or 80% of the original size.

Image Optimization

-3%

Potential reduce by 22.7 kB

  • Original 729.8 kB
  • After minification 707.1 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. Waqi images are well optimized though.

JavaScript Optimization

-4%

Potential reduce by 32.9 kB

  • Original 836.2 kB
  • After minification 835.9 kB
  • After compression 803.2 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

-67%

Potential reduce by 22.5 kB

  • Original 33.3 kB
  • After minification 33.2 kB
  • After compression 10.8 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. Waqi.info needs all CSS files to be minified and compressed as it can save up to 22.5 kB or 67% of the original size.

Requests Breakdown

Number of requests can be reduced by 22 (25%)

Requests Now

88

After Optimization

66

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 88 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Waqi. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

waqi.info

waqi.info

480 ms

merriweather.css

merriweather.css

301 ms

map.82b3c23c30215535f00a.js

map.82b3c23c30215535f00a.js

782 ms

app.fb0fa2839c18c3000116.js

app.fb0fa2839c18c3000116.js

1115 ms

map.8f5a7c093fffe9a8e161.css

map.8f5a7c093fffe9a8e161.css

311 ms

app.dd9702cf33183cad02c8.css

app.dd9702cf33183cad02c8.css

319 ms

js

js

54 ms

logo.png

logo.png

163 ms

gaia-a12-package.jpg

gaia-a12-package.jpg

1486 ms

logo.waqi.png

logo.waqi.png

694 ms

adsbygoogle.js

adsbygoogle.js

107 ms

show_ads_impl.js

show_ads_impl.js

294 ms

4

4

241 ms

4

4

383 ms

3

3

384 ms

5

5

382 ms

4

4

386 ms

3

3

381 ms

5

5

385 ms

3

3

534 ms

5

5

455 ms

4

4

457 ms

2

2

675 ms

6

6

532 ms

4

4

490 ms

3

3

550 ms

5

5

545 ms

2

2

641 ms

6

6

721 ms

2

2

722 ms

6

6

633 ms

3

3

651 ms

5

5

811 ms

2

2

816 ms

6

6

813 ms

2

2

814 ms

6

6

813 ms

1

1

814 ms

7

7

908 ms

1

1

924 ms

7

7

924 ms

1

1

908 ms

7

7

908 ms

1

1

960 ms

7

7

1017 ms

1

1

1017 ms

7

7

1016 ms

0

0

1017 ms

zrt_lookup.html

zrt_lookup.html

47 ms

ads

ads

736 ms

ads

ads

406 ms

ads

ads

388 ms

ads

ads

362 ms

ads

ads

550 ms

sessions.bugsnag.com

sessions.bugsnag.com

79 ms

0

0

841 ms

check

check

876 ms

available

available

959 ms

here

here

732 ms

955 ms

co2.svg

co2.svg

169 ms

reload.svg

reload.svg

166 ms

0

0

679 ms

0

0

935 ms

0

0

891 ms

notify.bugsnag.com

notify.bugsnag.com

94 ms

reactive_library.js

reactive_library.js

223 ms

ads

ads

442 ms

ads

ads

437 ms

ads

ads

431 ms

ads

ads

382 ms

load_preloaded_resource.js

load_preloaded_resource.js

83 ms

abg_lite.js

abg_lite.js

105 ms

s

s

32 ms

window_focus.js

window_focus.js

113 ms

qs_click_protection.js

qs_click_protection.js

114 ms

ufs_web_display.js

ufs_web_display.js

33 ms

2168efb8b40215826038c95b17b4ac18.js

2168efb8b40215826038c95b17b4ac18.js

246 ms

fullscreen_api_adapter.js

fullscreen_api_adapter.js

101 ms

interstitial_ad_frame.js

interstitial_ad_frame.js

238 ms

feedback_grey600_24dp.png

feedback_grey600_24dp.png

254 ms

settings_grey600_24dp.png

settings_grey600_24dp.png

255 ms

icon.png

icon.png

46 ms

nessie_icon_tiamat_white.png

nessie_icon_tiamat_white.png

255 ms

3331918197387456645

3331918197387456645

256 ms

ads

ads

371 ms

css

css

158 ms

ckySkFmwfmQXT3S4i881M7X0Dq040p3kAeEpVWKJmn8.js

ckySkFmwfmQXT3S4i881M7X0Dq040p3kAeEpVWKJmn8.js

35 ms

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrw2IJllpyw.ttf

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrw2IJllpyw.ttf

22 ms

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrwEIJllpyw.ttf

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrwEIJllpyw.ttf

31 ms

ads

ads

296 ms

activeview

activeview

68 ms

Accessibility Review

waqi.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.

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

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

waqi.info best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

waqi.info SEO score

92

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

Image elements do not have [alt] attributes

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

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 Waqi.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 Waqi.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

waqi.info

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