Aivc.org - SEO Checker

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Overview of the SEO Check
Meta information
100% 
Page quality
62% 
Page structure
79% 
Link structure
25% 
Server
91% 
External factors
100% 
SEO Score
Response time
0.58 s
File size
122.70 kB
Words
512
Media files
36
Number of links
121 internal / 10 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
AIVC | Air Infiltration and Ventilation Centre
The length of the page title is perfect. (384 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Air Infiltration and Ventilation Centre
The length of the meta description is perfect. (222 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.aivc.org/
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en
Server location: Finland
The following language is defined by HTML: en
Alternate/Hreflang Links
(Somewhat important)
There are no alternate links specified on this page.
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 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
viewportwidth=device-width, initial-scale=1
descriptionAir Infiltration and Ventilation Centre
generatorDrupal 7 (https://www.drupal.org)
dcterms.titleAIVC
dcterms.descriptionAir Infiltration and Ventilation Centre
dcterms.typeText
dcterms.formattext/html
dcterms.identifierhttps://www.aivc.org/
langen
twitter:cardsummary
twitter:titleAIVC
twitter:urlhttps://www.aivc.org/
twitter:descriptionAir Infiltration and Ventilation Centre
og:site_nameAIVC
og:typearticle
og:titleAIVC
og:urlhttps://www.aivc.org/
og:descriptionAir Infiltration and Ventilation Centre
Content-Typetext/html; charset=UTF-8

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Page quality

Content
(Critically important)
Only 1 paragraph/s was/were found on this page.
The average number of words per sentence of 7.5 words is low.
This page contains 512 words. That's ok.
18.2% of the text are stop words.
Keywords used in the page title are also used in the page content. That's good!
The page contains a listing, which indicates a good text layout.
No placeholders texts or images were found.
There are no duplicates on the site.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
A viewport "width=device-width, initial-scale=1" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 10 tags for this page.
Image SEO
(Somewhat important)
26 images have no alt attribute. The content of alt attributes is used by search engines.
Social Networks
(Nice to have)
There are only a few social sharing widgets on the page. Make your website popular in social networks with social sharing widgets.
Additional markup
(Nice to have)
No additional page markup was found.
HTTPS
(Somewhat important)
This website uses HTTPS to protect privacy and integrity of the exchanged data.
All included files are also transferred via HTTPS.

Media list

URLAlt attributeTitle
...hemes/Porto/img/aivc_social_linkedin.pngLinkedIn
.../all/themes/Porto/img/aivc_social_yt.pngYouTube
...themes/Porto/img/aivc_social_scoopit.svgPaper
/system/files/aivc_logo_0_0.pngHome
...themes/temaskills800/images/logo_ebc.pngNo alt attribute provided
...themes/temaskills800/images/logo_ebc.pngNo alt attribute provided
/sites/all/themes/Porto/img/icon-login.pngNo alt attribute provided
/system/files/songdo_004.jpgNo alt attribute provided
/system/files/AIVC2025.PNGNo alt attribute provided
/system/files/slide_04_1.jpgNo alt attribute provided
/system/files/slide_02.jpgNo alt attribute provided
/system/files/slide_08_0.jpgNo alt attribute provided
/system/files/slide_08_0.jpgNo alt attribute provided
/system/files/slide_01_0.jpgNo alt attribute provided
/system/files/Capture_29.PNGAIVC Newsletter, March 2021
/system/files/Capture_32.PNGTighVent_NL_2021.PNG
/system/files/venticool_NL25.pngventicool_NL25.png
...yles/publi/public/CR22.png?itok=CQKAZplxNo alt attribute provided
...yles/publi/public/CR20.png?itok=fpOs1yD6No alt attribute provided
...yles/publi/public/CR21.png?itok=4hj8Et3yNo alt attribute provided
...les/publi/public/TN_74.png?itok=UO5E_1c6No alt attribute provided
...yles/publi/public/48.4.png?itok=1wWN5ZEZNo alt attribute provided
/sites/all/themes/Porto/img/bann_newsl.pngNo alt attribute provided
/sites/all/themes/Porto/img/bann_map.pngNo alt attribute provided
...umb/public/1_Cerema_VL.png?itok=R68qE23qNo alt attribute provided
...thumb/public/Intro_SCR.png?itok=A9dxB9dsNo alt attribute provided
.../video-thumb/public/HB.png?itok=rN6g6N1-No alt attribute provided
...o-thumb/public/Intro_2.png?itok=aslqdGbVNo alt attribute provided
...shot 2025-02-24 123141.png?itok=uiXR45frNo alt attribute provided
...shot 2024-12-19 142805.png?itok=sE2jWvpbNo alt attribute provided
...o-thumb/public/Intro_1.png?itok=mv1p0IqoNo alt attribute provided
...o-thumb/public/Intro_0.png?itok=fhb4nBvgNo alt attribute provided
...ll/themes/Porto/img/aivc_logo_footer.pngNo alt attribute provided
...hemes/Porto/img/aivc_social_linkedin.pngLinkedIn
.../all/themes/Porto/img/aivc_social_yt.pngYouTube
...themes/Porto/img/aivc_social_scoopit.svgPaper

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H2 Publications
H2 Events
H2 News
H2 Multimedia
Some internal link anchor texts are too long.
Some anchor texts are used more than once.
15 links don't have an anchor text.
There are 10 links with a trivial anchor text.
The number of internal links is ok.
All internal links are not using dynamic parameters.
There are 10 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://www.linkedin.com/compa...New window External Subdomain IMG-ALT LinkedIn
A-TITLE Go to AIVC LinkedIn page
https://www.youtube.com/channe...New window External Subdomain IMG-ALT YouTube
A-TITLE Go to AIVC YouTube page
https://bsky.app/profile/aivc....New window External A-TITLE Go to AIVC Blue-Sky page
https://www.inive.org/resource...New window External Subdomain IMG-ALT Paper
A-TITLE Go to INIVE sccop.it page
https://www.aivc.org/IMG-ALT Home
A-TITLE Home
https://www.iea-ebc.org/New window External Subdomain No Text
https://www.aivc.org/about-usAbout
A-TITLE About AIVC
/about-us/what-is-aivcAIVC
/about-us/aivc-countriesAIVC Countries
A-TITLE AIVC Countries
/about-us/board-membersAIVC Board
/about-us/industry-advisory-co...AIVC Industry Advisory Committee
A-TITLE AIVC Industry Advisory Committee
/about-us/collaborationsCollaborations
https://www.aivc.org/events-listEvents
/events/conferencesConferences
/events/workshopsWorkshops
/events/webinarsWebinars
https://www.aivc.org/resourcesResources
A-TITLE AIVC Resources (Airbase, AIVC Publications, Collections, News, Newsletter and Faqs)
/resources/airbaseAIRBASE
/resources/collection-papers/a...AIVC Publications
/resources/collection-publicat...AIVC Conference Proceedings
/resources/collection-papersCollections of publications
/resources/multimediaMultimedia
/resources/newsNews
/resources/newslettersNewsletters
/resources/faqsFAQ
https://www.aivc.org/projectsFocus Fields & Projects
/focus-fields/smart-ventilationSmart Ventilation
/focus-fields/resilient-ventil...Resilient Ventilative Cooling
/focus-fields/building-ductwor...Building & Ductwork airtightness
/focus-fields/indoor-environme...Indoor Environmental Quality
/aivc-projectsAIVC Projects
https://www.aivc.org/contactContact & Join
A-TITLE Contact us
https://www.aivc.org/contact-usContact us
https://www.aivc.org/how-to-joinHow to Join
/terms-and-conditions/useTerms and conditions
https://www.iea-ebc.org/New window External Subdomain No Text
https://www.aivc.org/user/loginNofollow Login
/event/30-september-1-october-...Subdomain Trivial anchor text
read more
/event/24-26-september-2025-co...Subdomain Text duplicate Trivial anchor text
read more
/event/5-june-2025-webinar-ins...Subdomain Text duplicate Trivial anchor text
read more
/event/12-may-2025-webinar-bui...Subdomain Text duplicate Trivial anchor text
read more
/event/5-may-2025-webinar-impr...Subdomain Text duplicate Trivial anchor text
read more
/event/17-march-2025-webinar-r...Subdomain Text duplicate Trivial anchor text
read more
/resources/newslettersSubdomain Subscribe to our newsletters
/resources/newslettersSubdomain Text duplicate Trivial anchor text
read more
/focus-fields/smart-ventilationText duplicate Smart Ventilation
/focus-fields/resilient-ventil...Text duplicate Resilient Ventilative Cooling
/focus-fields/building-ductwor...Text duplicate Building & Ductwork airtightness
/focus-fields/indoor-environme...Text duplicate Indoor Environmental Quality
/content/aivc-newsletter-march...Subdomain Text duplicate Trivial anchor text
read more
/content/tightvent-newsletter-...Subdomain Text duplicate Trivial anchor text
read more
/content/venticool-newsletter-...Subdomain Text duplicate Trivial anchor text
read more
/resource/cr22-quantifying-pop...No Text
/resource/cr22-quantifying-pop...CR22: Quantifying population harm from indoor air contaminants in dwellings
A-TITLE CR22: Quantifying population harm from indoor air contaminants in dwellings
/resource/cr22-quantifying-pop...A-TITLE Read more about CR22: Quantifying population harm from indoor air contaminants in dwellings
/resource/cr20-method-testing-...No Text
/resource/cr20-method-testing-...CR20: A method for testing gas-phase air cleaners
A-TITLE CR20: A method for testing gas-phase air cleaners
/resource/cr20-method-testing-...A-TITLE Read more about CR20: A method for testing gas-phase air cleaners
/resource/cr21-performance-por...No Text
/resource/cr21-performance-por...CR21: Performance of Portable Gas-Phase Air Cleaners and Impact on Indoor Air Quality. A Literature Review
A-TITLE CR21: Performance of Portable Gas-Phase Air Cleaners and Impact on Indoor Air Quality. A Literature Review
/resource/cr21-performance-por...A-TITLE Read more about CR21: Performance of Portable Gas-Phase Air Cleaners and Impact on Indoor Air Quality. A Literature Review
/resource/tn-74-smart-ventilat...No Text
/resource/tn-74-smart-ventilat...TN 74: Smart Ventilation in Residential Buildings
A-TITLE TN 74: Smart Ventilation in Residential Buildings
/resource/tn-74-smart-ventilat...A-TITLE Read more about TN 74: Smart Ventilation in Residential Buildings
/resource/vip-484-trends-build...No Text
/resource/vip-484-trends-build...VIP 48.4: Trends in building ventilation requirements and inspection in Italy
A-TITLE VIP 48.4: Trends in building ventilation requirements and inspection in Italy
/resource/vip-484-trends-build...A-TITLE Read more about VIP 48.4: Trends in building ventilation requirements and inspection in Italy
/resources/airbaseView all publications
/event/30-september-1-october-...30 September -1 October 2026, Conference, Incheon– 46th AIVC conference
A-TITLE 30 September -1 October 2026, Conference, Incheon– 46th AIVC conference
/event/21-22-april-2026-worksh...21-22 April 2026, Workshop, Madrid, "Climate Change, Ventilation and Resilience"
A-TITLE 21-22 April 2026, Workshop, Madrid, "Climate Change, Ventilation and Resilience"
/event/24-26-september-2025-co...24-26 September 2025, Conference, Montreal, 45th AIVC - ASHRAE IEQ joint conference
A-TITLE 24-26 September 2025, Conference, Montreal, 45th AIVC - ASHRAE IEQ joint conference
/event/18-september-2025-webin...18 September 2025, Webinar – Emerging Risks of Indoor Mould: Assessment Methods, In-Situ Measurements &...
A-TITLE 18 September 2025, Webinar – Emerging Risks of Indoor Mould: Assessment Methods, In-Situ Measurements & Predictive Modelling
https://www.aivc.org/events-listView all events
/resources/airbaseClick here for searching in a database of 24577 publications with 14540 pdf documents
/resources/newslettersNo Text
/about-us/aivc-countriesNo Text
/news/aivc-2026-workshop-21-22...AIVC 2026 Workshop, 21-22 April 2026, Madrid
A-TITLE AIVC 2026 Workshop, 21-22 April 2026, Madrid
/news/aivc-2026-conference-30-...AIVC 2026 Conference, 30 September - 1 October 2026, Incheon, Republic of Korea
A-TITLE AIVC 2026 Conference, 30 September - 1 October 2026, Incheon, Republic of Korea
/news/new-release-quantifying-...New Release: Quantifying Population Harm from Indoor Air Contaminants in Dwellings
A-TITLE New Release: Quantifying Population Harm from Indoor Air Contaminants in Dwellings
/news/venticool-newsletter-iss...venticool newsletter issue #26 – July 2025
A-TITLE venticool newsletter issue #26 – July 2025
/resources/newsView all news
/content/inspection-ventilatio...No Text
/content/inspection-ventilatio...Inspection of ventilation systems in...
/content/building-and-ductwork...No Text
/content/building-and-ductwork...Building and ductwork airtightness...
/content/improving-thermal-res...No Text
/content/improving-thermal-res...Improving thermal resilience of...
/content/recent-standards-and-...No Text
/content/recent-standards-and-...Recent standards and guidelines on CO2...
/content/energy-performance-ga...No Text
/content/energy-performance-ga...Energy Performance of Gas Phase Air...
/content/building-and-ductwork...No Text
/content/building-and-ductwork...Text duplicate Building and ductwork airtightness...
/content/building-airtightness...No Text
/content/building-airtightness...Building Airtightness Impact on Energy...
/content/personalized-environm...No Text
/content/personalized-environm...Personalized Environmental Control...
/resources/multimediaView all multimedia
https://www.aivc.org/about-usText duplicate About
A-TITLE About AIVC
/about-us/what-is-aivcText duplicate AIVC
/about-us/aivc-countriesText duplicate AIVC Countries
A-TITLE AIVC Countries
/about-us/board-membersText duplicate AIVC Board
/about-us/industry-advisory-co...Text duplicate AIVC Industry Advisory Committee
A-TITLE AIVC Industry Advisory Committee
/about-us/collaborationsText duplicate Collaborations
https://www.aivc.org/events-listText duplicate Events
/events/conferencesText duplicate Conferences
/events/workshopsText duplicate Workshops
/events/webinarsText duplicate Webinars
https://www.aivc.org/resourcesText duplicate Resources
A-TITLE AIVC Resources (Airbase, AIVC Publications, Collections, News, Newsletter and Faqs)
/resources/airbaseText duplicate AIRBASE
/resources/collection-papers/a...Text duplicate AIVC Publications
/resources/collection-publicat...Text duplicate AIVC Conference Proceedings
/resources/collection-papersText duplicate Collections of publications
/resources/multimediaText duplicate Multimedia
/resources/newsText duplicate News
/resources/newslettersText duplicate Newsletters
/resources/faqsText duplicate FAQ
https://www.aivc.org/projectsText duplicate Focus Fields & Projects
/focus-fields/smart-ventilationText duplicate Smart Ventilation
/focus-fields/resilient-ventil...Text duplicate Resilient Ventilative Cooling
/focus-fields/building-ductwor...Text duplicate Building & Ductwork airtightness
/focus-fields/indoor-environme...Text duplicate Indoor Environmental Quality
/aivc-projectsText duplicate AIVC Projects
https://www.aivc.org/contactText duplicate Contact & Join
A-TITLE Contact us
https://www.aivc.org/contact-usText duplicate Contact us
https://www.aivc.org/how-to-joinText duplicate How to Join
/terms-and-conditions/useText duplicate Terms and conditions
https://www.linkedin.com/compa...New window External Subdomain Text duplicate IMG-ALT LinkedIn
A-TITLE Go to AIVC LinkedIn page
https://www.youtube.com/channe...New window External Subdomain Text duplicate IMG-ALT YouTube
A-TITLE Go to AIVC YouTube page
https://bsky.app/profile/aivc....New window External Text duplicate A-TITLE Go to AIVC Blue-Sky page
https://www.inive.org/resource...New window External Subdomain Text duplicate IMG-ALT Paper
A-TITLE Go to INIVE sccop.it page

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.aivc.org/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
The web server transmits the web page (HTML) in compressed form.
Performance
(Somewhat important)
The page response time of 0.58 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.
The file size of the HTML document is fine (123 kB).

HTTP Response Header

NameValue
expiresSun, 19 Nov 1978 05:00:00 GMT
cache-controlno-cache, must-revalidate
x-content-type-optionsnosniff
x-commerce-core1
content-languageen
permissions-policyinterest-cohort=()
x-generatorDrupal 7 (https://www.drupal.org)
link<https://www.aivc.org/>; rel="canonical",<https://www.aivc.org/>; rel="shortlink",<https://www.aivc.org/sites/default/files/favicon.ico>; rel="shortcut icon"
content-encodinggzip
varyAccept-Encoding
content-typetext/html; charset=utf-8
dateTue, 29 Jul 2025 16:52:06 GMT
serverApache
statuscode200
http_versionHTTP/2

External factors

This website has excellent links from other websites.
This page has backlinks from 39 referring domains.
This page has 206 backlinks.
This page has backlinks from 35 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

#
# robots.txt
#
# This file is to prevent the crawling and indexing of certain parts
# of your site by web crawlers and spiders run by sites like Yahoo!
# and Google. By telling these "robots" where not to go on your site,
# you save bandwidth and server resources.
#
# This file will be ignored unless it is at the root of your host:
# Used:    http://example.com/robots.txt
# Ignored: http://example.com/site/robots.txt
#
# For more information about the robots.txt standard, see:
# http://www.robotstxt.org/robotstxt.html

User-agent: *
Crawl-delay: 10
# CSS, JS, Images
Allow: /misc/*.css$
Allow: /misc/*.css?
Allow: /misc/*.js$
Allow: /misc/*.js?
Allow: /misc/*.gif
Allow: /misc/*.jpg
Allow: /misc/*.jpeg
Allow: /misc/*.png
Allow: /modules/*.css$
Allow: /modules/*.css?
Allow: /modules/*.js$
Allow: /modules/*.js?
Allow: /modules/*.gif
Allow: /modules/*.jpg
Allow: /modules/*.jpeg
Allow: /modules/*.png
Allow: /profiles/*.css$
Allow: /profiles/*.css?
Allow: /profiles/*.js$
Allow: /profiles/*.js?
Allow: /profiles/*.gif
Allow: /profiles/*.jpg
Allow: /profiles/*.jpeg
Allow: /profiles/*.png
Allow: /themes/*.css$
Allow: /themes/*.css?
Allow: /themes/*.js$
Allow: /themes/*.js?
Allow: /themes/*.gif
Allow: /themes/*.jpg
Allow: /themes/*.jpeg
Allow: /themes/*.png
# Directories
Disallow: /includes/
Disallow: /misc/
Disallow: /modules/
Disallow: /profiles/
Disallow: /scripts/
Disallow: /themes/
Disallow: /user/
# Files
Disallow: /CHANGELOG.txt
Disallow: /cron.php
Disallow: /INSTALL.mysql.txt
Disallow: /INSTALL.pgsql.txt
Disallow: /INSTALL.sqlite.txt
Disallow: /install.php
Disallow: /INSTALL.txt
Disallow: /LICENSE.txt
Disallow: /MAINTAINERS.txt
Disallow: /update.php
Disallow: /UPGRADE.txt
Disallow: /xmlrpc.php
# Paths (clean URLs)
Disallow: /user
Disallow: /admin/
Disallow: /comment/reply/
Disallow: /filter/tips/
Disallow: /node/add/
Disallow: /search/
Disallow: /user/register/
Disallow: /user/password/
Disallow: /user/login/
Disallow: /user/logout/
Disallow: *.php

# Paths (no clean URLs)
Disallow: /?q=admin/
Disallow: /?q=user
Disallow: /?q=user/
Disallow: /?q=comment/reply/
Disallow: /?q=filter/tips/
Disallow: /?q=node/add
Disallow: /?q=node/add/
Disallow: /?q=search/
Disallow: /?q=user/password/
Disallow: /?q=user/register/
Disallow: /?q=user/login/
Disallow: /?q=user/logout/

Similar sites

Search preview

www.aivc.org
AIVC | Air Infiltration and Ventilation Centre
Air Infiltration and Ventilation Centre

Most important keywords

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

KeywordResultRecheck
AIVC61%Check
Ventilation58%Check
air58%Check
Infiltration58%Check
Air Infiltration58%Check
Ventilation Centre58%Check
Centre56%Check
AIVC Conference48%Check
46th AIVC48%Check
AIVC 202648%Check
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