Waqi.info - SEO Checker

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Overview of the SEO Check
Meta information
92% 
Page quality
82% 
Page structure
70% 
Link structure
100% 
Server
83% 
External factors
100% 
SEO Score
Response time
0.75 s
File size
70.80 kB
Words
978
Media files
108
Number of links
91 internal / 25 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
World's Air Pollution: Real-time Air Quality Index
The length of the page title is perfect. (430 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
How polluted is the air today? Check out the real-time air pollution map, for more than 80 countries.
The length of the meta description is perfect. (610 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://waqi.info/
The specified canonical link points to a different page.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en
Server location: United States of America
The following language is defined by HTML: en
Alternate/Hreflang Links
(Somewhat important)
The alternate link to the page itself is missing.
Other meta tags
(Somewhat important)
There is no rel next meta tag on this page.
There is no rel prev meta tag on this page.
Domain
(Somewhat important)
The domain is no subdomain.
The domain length is good.
The domain does not contain non-latin characters.
Page URL
(Somewhat important)
No parameters were found in the URL.
No session ID was found in the URL.
The URL does not have too many subdirectories.
Charset encoding
(Somewhat important)
The character encoding is not specified in the HTTP header.
The charset encoding (UTF-8) is set correctly.
Doctype
(Nice to have)
The doctype HTML 5 is set correctly.
The doctype is placed at first in the HTML code.
Favicon
(Nice to have)
The favicon is linked correctly.

Meta tags

NameValue
authorThe World Air Quality Index project
DescriptionHow polluted is the air today? Check out the real-time air pollution map, for more than 80 countries.
KeywordsWorld Air Quality Index in real-time, World's Air Pollution, Real-time Air Quality Index, Small particles, Large particles, Ozone, Pollutant, Nitrogen Dioxyde, Sulfur Dioxyde, Carbon Monxyde, Air Quality Index, Air Quality Forecast, Air Quality Observations, Health Implications, World Air Quality Index in real-time
apple-mobile-web-app-status-bar-styleblack-translucent
viewportwidth=device-width,initial-scale=1,maximum-scale=1,user-scalable=no
apple-mobile-web-app-capableyes
msapplication-TileImage/images/favicon/mstile-144x144.png
mobile-web-app-capableyes
theme-color#fff
application-nameWAQI
apple-mobile-web-app-titleWAQI
msapplication-TileColor#fff
msapplication-config/images/favicon/browserconfig.xml
langen
twitter:site@world_aqi
og:titleWorld's Air Pollution: Real-time Air Quality Index
og:descriptionHow polluted is the air today? Check out the real-time air pollution map, for more than 80 countries.
og:imagehttps://waqi.info/images/worldmap.png
og:image:width1200
og:image:height630
og:site_namewaqi.info
og:urlhttps://waqi.info/
og:typewebsite
Content-Typetext/html; charset=UTF-8
DescriptionHow polluted is the air today? Check out the real-time air pollution map, for more than 80 countries.
KeywordsWorld Air Quality Index in real-time, World's Air Pollution, Real-time Air Quality Index, Small particles, Large particles, Ozone, Pollutant, Nitrogen Dioxyde, Sulfur Dioxyde, Carbon Monxyde, Air Quality Index, Air Quality Forecast, Air Quality Observations, Health Implications, World Air Quality Index in real-time

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Page quality

Content
(Critically important)
Words from the H1 heading are not used in the page content.
These Typos were found:
  • enviromental => environmental
There are 2 text duplicates on this page:
  • Duplicate: Active children and adults, and people with respiratory disease, such ...
This page contains 978 words. That's ok.
30.9% of the text are stop words.
Keywords used in the page title are also used in the page content. That's good!
17 paragraphs were found on this page.
No placeholders texts or images were found.
The average number of words per sentence of 17.9 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
A viewport "width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no" is provided.
At least one Apple touch icon is specified.
This page only loads 3 JavaScript files. That's good!
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 20 tags for this page.
Image SEO
(Somewhat important)
Alt text (alternative text) is correctly used on all found images.
Social Networks
(Nice to have)
This page is optimized perfectly for social networks.
Additional markup
(Nice to have)
No additional page markup was found.
HTTPS
(Somewhat important)
The HTTPS protocol for secure data transmission is not used.

Media list

URLAlt attributeTitle
http://waqi.info/images/logo.pnglogo
http://waqi.info/images/logo.pngwaqi logo
http://waqi.info/images/logo.pngwaqi logo
http://waqi.info/images/logo.pngwaqi logo
...ir/view/gaia/images/gaia-a12-package.jpgGAIA A12 air quality monitoring stationGAIA A12 Air Quality Monitoring Station
https://waqi.info/icons/logo.waqi.pngwaqi logo

Page structure

H1 heading
(Critically important)
Can not find your city on the map?
Too many H1 headings
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 Can not find your city on the map?
H1 air quality rankings by country
H1 About the World Air Quality Index project
H1 Translations
H1 Usage Notice
H2 How to use this web application
H2 Air Quality Index (AQI) Calculation
H2 Further information and links
H2 Credits
H2 Air Quality Scale
The number of internal links is ok.
Every linktext is unique.
None of the anchor texts is too long.
All internal links are not using dynamic parameters.
There are 25 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://twitter.com/intent/tweetExternal No Text
https://aqicn.org/contact/External WAQI.info: World Air Quality Index
https://twitter.com/intent/tweetExternal No Text
https://aqicn.org/gaia/External Measure the air quality in your neighborhood Participate with your own air quality monitoring station
https://aqicn.org/gaia/External Do you want to know more? Click for more info.
https://aqicn.org/gaia/External IMG-ALT GAIA A12 air quality monitoring station
https://aqicn.org/mask/External IMG-ALT mask
https://aqicn.org/mask/External Want to protect yourself against the air pollution? Check our mask and air purifier page.
https://aqicn.org/faq/External IMG-ALT question
https://aqicn.org/faq/External Want to know more Air Pollution? Check our Frequently Asked Question (FAQ) page.
https://waqi.info/forecast/IMG-ALT forecast
https://waqi.info/forecast/Want to see the Air Pollution Forecast? Check our Forecast page.
https://aqicn.org/contact/External IMG-ALT contact
https://aqicn.org/contact/External Want to know more about the project and team? Check the Contact page.
https://aqicn.org/api/External IMG-ALT api
https://aqicn.org/api/External Want to access the Air Quality data via programatic API? Check the API page.
https://aqicn.org/sources/External worldwide EPA list
https://www.epa.gov/environmen...External Subdomain US EPA standard
https://aqicn.org/faq/2015-03-...External Instant Cast
http://waqi.info/English
IMG-ALT en
http://waqi.info/af/Afrikaans Afrikaans
IMG-ALT af
http://waqi.info/am/አማርኛ Amharic
IMG-ALT am
http://waqi.info/ar/العربية Arabic
IMG-ALT ar
http://waqi.info/as/অসমীয়া Assamese
IMG-ALT as
http://waqi.info/az/azərbaycan Azerbaijani
IMG-ALT az
http://waqi.info/be/беларуская Belarusian
IMG-ALT be
http://waqi.info/bg/български Bulgarian
IMG-ALT bg
http://waqi.info/bn/বাংলা Bangla
IMG-ALT bn
http://waqi.info/bs/bosanski Bosnian
IMG-ALT bs
http://waqi.info/ca/català Catalan
IMG-ALT ca
http://waqi.info/cs/Čeština Czech
IMG-ALT cs
http://waqi.info/cy/Cymraeg Welsh
IMG-ALT cy
http://waqi.info/da/Dansk Danish
IMG-ALT da
http://waqi.info/de/Deutsch German
IMG-ALT de
http://waqi.info/el/Ελληνικά Greek
IMG-ALT el
http://waqi.info/eo/esperanto Esperanto
IMG-ALT eo
http://waqi.info/es/Español Spanish
IMG-ALT es
http://waqi.info/et/eesti Estonian
IMG-ALT et
http://waqi.info/eu/euskara Basque
IMG-ALT eu
http://waqi.info/fa/فارسی Persian
IMG-ALT fa
http://waqi.info/fi/Suomi Finnish
IMG-ALT fi
http://waqi.info/fil/Filipino Filipino
IMG-ALT fil
http://waqi.info/fr/Français French
IMG-ALT fr
http://waqi.info/ga/Gaeilge Irish
IMG-ALT ga
http://waqi.info/gl/galego Galician
IMG-ALT gl
http://waqi.info/gu/ગુજરાતી Gujarati
IMG-ALT gu
http://waqi.info/ha/Hausa Hausa
IMG-ALT ha
http://waqi.info/he/עברית Hebrew
IMG-ALT he
http://waqi.info/hi/हिन्दी Hindi
IMG-ALT hi
http://waqi.info/hr/Hrvatski Croatian
IMG-ALT hr
http://waqi.info/hu/magyar Hungarian
IMG-ALT hu
http://waqi.info/hy/հայերեն Armenian
IMG-ALT hy
http://waqi.info/id/Indonesia Indonesian
IMG-ALT id
http://waqi.info/is/íslenska Icelandic
IMG-ALT is
http://waqi.info/it/Italiano Italian
IMG-ALT it
http://waqi.info/ja/日本語 Japanese
IMG-ALT ja
http://waqi.info/jv/Jawa Javanese
IMG-ALT jv
http://waqi.info/ka/ქართული Georgian
IMG-ALT ka
http://waqi.info/kk/қазақ тілі Kazakh
IMG-ALT kk
http://waqi.info/km/ខ្មែរ Khmer
IMG-ALT km
http://waqi.info/kn/ಕನ್ನಡ Kannada
IMG-ALT kn
http://waqi.info/ko/한국어 Korean
IMG-ALT ko
http://waqi.info/ky/кыргызча Kyrgyz
IMG-ALT ky
http://waqi.info/lb/Lëtzebuergesch Luxembourgish
IMG-ALT lb
http://waqi.info/lo/ລາວ Lao
IMG-ALT lo
http://waqi.info/lt/lietuvių Lithuanian
IMG-ALT lt
http://waqi.info/lv/latviešu Latvian
IMG-ALT lv
http://waqi.info/mg/Malagasy Malagasy
IMG-ALT mg
http://waqi.info/mk/македонски Macedonian
IMG-ALT mk
http://waqi.info/ml/മലയാളം Malayalam
IMG-ALT ml
http://waqi.info/mn/монгол Mongolian
IMG-ALT mn
http://waqi.info/mr/मराठी Marathi
IMG-ALT mr
http://waqi.info/ms/Melayu Malay
IMG-ALT ms
http://waqi.info/mt/Malti Maltese
IMG-ALT mt
http://waqi.info/my/မြန်မာ Burmese
IMG-ALT my
http://waqi.info/nb/norsk Norwegian
IMG-ALT nb
http://waqi.info/ne/नेपाली Nepali
IMG-ALT ne
http://waqi.info/nl/Nederlands Dutch
IMG-ALT nl
http://waqi.info/or/ଓଡ଼ିଆ Odia
IMG-ALT or
http://waqi.info/pa/ਪੰਜਾਬੀ Punjabi
IMG-ALT pa
http://waqi.info/pl/polski Polish
IMG-ALT pl
http://waqi.info/ps/پښتو Pashto
IMG-ALT ps
http://waqi.info/pt/Portuguese Portuguese
IMG-ALT pt
http://waqi.info/ro/română Romanian
IMG-ALT ro
http://waqi.info/ru/Русский Russian
IMG-ALT ru
http://waqi.info/sd/سنڌي Sindhi
IMG-ALT sd
http://waqi.info/si/සිංහල Sinhala
IMG-ALT si
http://waqi.info/sk/Slovenčina Slovak
IMG-ALT sk
http://waqi.info/sl/slovenščina Slovenian
IMG-ALT sl
http://waqi.info/sn/chiShona Shona
IMG-ALT sn
http://waqi.info/so/Soomaali Somali
IMG-ALT so
http://waqi.info/sq/shqip Albanian
IMG-ALT sq
http://waqi.info/sr/српски Serbian
IMG-ALT sr
http://waqi.info/sv/Svenska Swedish
IMG-ALT sv
http://waqi.info/sw/Kiswahili Swahili
IMG-ALT sw
http://waqi.info/ta/தமிழ் Tamil
IMG-ALT ta
http://waqi.info/te/తెలుగు Telugu
IMG-ALT te
http://waqi.info/tg/тоҷикӣ Tajik
IMG-ALT tg
http://waqi.info/th/ไทย Thai
IMG-ALT th
http://waqi.info/tr/Türkçe Turkish
IMG-ALT tr
http://waqi.info/tt/татар Tatar
IMG-ALT tt
http://waqi.info/uk/Українська Ukrainian
IMG-ALT uk
http://waqi.info/ur/اردو Urdu
IMG-ALT ur
http://waqi.info/uz/o‘zbek Uzbek
IMG-ALT uz
http://waqi.info/vi/Tiếng Việt Vietnamese
IMG-ALT vi
http://waqi.info/yi/ייִדיש Yiddish
IMG-ALT yi
http://waqi.info/cn/简体中文 Chinese (Simplified)
IMG-ALT cn
http://waqi.info/tw/繁體中文 Chinese (Traditional)
IMG-ALT tw
https://aqicn.org/External World Air Quality Index
https://aqicn.org/External Text duplicate World Air Quality Index
https://leafletjs.com/External leaflet
https://www.maxmind.com/External Subdomain URL anchor text
https://www.maxmind.com
https://locationiq.com/External LocationIQ.com
http://www.freepik.com/External Subdomain Freepik
A-TITLE Freepik
https://www.flaticon.com/External Subdomain www.flaticon.com
A-TITLE Flaticon
http://creativecommons.org/lic...New window External CC 3.0 BY
A-TITLE Creative Commons BY 3.0

Server configuration

HTTP redirects
(Critically important)
The checked page does not redirect to another URL.
HTTP header
(Important)
No X-Powered HTTP header is sent.
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
The page response time of 0.75 seconds is longer than the recommended limit of 0.4 seconds. A high response time unnecessarily slows down search engine crawling and results in bad user experience as well.
This page only loads 3 CSS files. That's ok.
This page only loads 3 JavaScript files. That's good!
The file size of the HTML document is fine (71 kB).

HTTP Response Header

NameValue
servernginx
dateSat, 27 Jul 2024 13:37:19 GMT
content-typetext/html
transfer-encodingchunked
connectionkeep-alive
varyAccept-Encoding
content-encodinggzip
statuscode200
http_versionHTTP/1.1

External factors

Blacklists
(Nice to have)
This website is not classified "for adult only".
This website has excellent links from other websites.
This page has backlinks from 1,818 referring domains.
This page has 203,988 backlinks.
This page has backlinks from 1,450 different ip addresses.
Facebook popularity
(Somewhat important)
The page has 0 shares and comments on Facebook.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

No valid Robots.txt file was found.

Similar sites

Search preview

waqi.info
World's Air Pollution: Real-time Air Quality Index
How polluted is the air today? Check out the real-time air pollution map, for more than 80 countries.

Most important keywords

Following keywords were found. You can check the keyword optimization of this page for each keyword.

KeywordResultRecheck
Air69%Check
map63%Check
Air Pollution62%Check
real-time Air62%Check
air pollution map61%Check
Air Quality60%Check
pollution map60%Check
real-time air pollution60%Check
Pollution58%Check
real-time58%Check
Show more keywords and terms

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