Ssec.si.edu - SEO Checker

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Overview of the SEO Check
Meta information
77% 
Page quality
65% 
Page structure
97% 
Link structure
82% 
Server
54% 
External factors
100% 
SEO Score
Response time
4.67 s
File size
44.90 kB
Words
559
Media files
23
Number of links
80 internal / 9 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Smithsonian Science Education Center |
The length of the page title is perfect. (359 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
The meta description is missing.
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://ssec.si.edu/
There is a valid canonical link specified.
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)
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)
No favicon is linked in the HTML code.

Meta tags

NameValue
generatorDrupal 7 (http://drupal.org)
google-site-verificationG-EQ3BWQW179
MobileOptimizedwidth
HandheldFriendlytrue
viewportwidth=device-width, initial-scale=1
langen
twitter:cardsummary
twitter:urlhttps://ssec.si.edu/
twitter:titleSmithsonian Science Education Center
og:site_nameSmithsonian Science Education Center
og:typewebsite
og:urlhttps://ssec.si.edu/
og:titleSmithsonian Science Education Center
og:imagehttp://ssec.si.edu/sites/default/files/ssec-logo.png
og:image:typeimage/png
og:image:width1280
og:image:height720
Content-Typetext/html; charset=UTF-8

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Page quality

Content
(Critically important)
Words from the H1 heading are not used in the page content.
This page contains 559 words. That's ok.
29.3% 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.
4 paragraphs were found on this page.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 15.3 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
This page loads 22 JavaScript files. This may affect the load time negatively.
A viewport "width=device-width, initial-scale=1" is provided.
Bold and strong tags
(Somewhat important)
Some tags are too long. With 115 characters this one is longer than 70 characters:
"announcing the douglas m. lapp and anne b. keiser endowed directorship of the smithsonian science educ..."
Image SEO
(Somewhat important)
15 images have no alt attribute. The content of alt attributes is used by search engines.
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)
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
...tes/default/files/SSEC 40 Logo BLACK.pngNo alt attribute provided
...public/video/posters/3.jpg?itok=pBe7wDB3No alt attribute provided
...opment_Final Digital-1.png?itok=uakUPTxkA blue background with a five students surrounding an educator with long dark brown hair examining a group of plants.
...able_Development cover.png?itok=DzCHaiN3Cover of Educating for Sustainable development perspectives of US and Global EducatorsEducating for Sustainable development perspectives of US and Global Educators
...public/video/posters/1.jpg?itok=r89hEFXQNo alt attribute provided
...g/images/GridSmaller_0.png?itok=nvU3UlV0No alt attribute provided
...0-05 at 3.05.09 PM_0_0.png?itok=aLo6M5kQNo alt attribute provided
...-230/public/Full Guide.png?itok=nCgSJvtTSustainable CommunitiesSustainable Communities
.../public/Vaccines Cover.png?itok=Fi06f-8LVaccines CoverVaccines Cover
...230/public/TitleScreen.png?itok=IsxQN9nXPick Your Plate! Guía Global de Nutrición title screenPick Your Plate! Guía Global de Nutrición title screen
... the Smithsonian cover.png?itok=Yoycx_HPA blue tone image of the Smithsonian castle with text that says Stories of women in STEM at the SmithsonianStories of Women in STEM at the Smithsonian
...230/public/Resources_0.PNG?itok=vnRMSDGoNo alt attribute provided
...lic/COVID-19_SSfGG_web.jpg?itok=EO6iMN9jImage of cover of "COVID-19! How Can I Protect Myself and Others?" The main image is an illustration of the coronavirus. "COVID-19! How Can I Protect Myself and Others?" Cover
...images/AquationDevices.png?itok=JMqmIEYZNo alt attribute provided
...blic/PickYourPlate (1).png?itok=Z8EwN2DAPick Your Plate! A Global Guide to Nutrition title screenPick Your Plate! A Global Guide to Nutrition title screen
...ettyImages-628496452_0.jpg?itok=qaQw_8-ENo alt attribute provided
...650952295_c5bf036d68_k.jpg?itok=VDQAzeLoNo alt attribute provided
...18-01-10 at 3.02.18 PM.png?itok=DlWG1J29No alt attribute provided
...Beats and Banjos Cover.png?itok=J4ufrO-qNo alt attribute provided
...c/landing/images/image.png?itok=HR082KRJNo alt attribute provided
.../landing/images/516301.jpg?itok=oM3tQhnPNo alt attribute provided
...ages/SmithScreens_BD_1.jpg?itok=VtzwtUSxNo alt attribute provided
...ODonnell_Headshot_2023.jpg?itok=pVpelpTkNo alt attribute provided

Page structure

H1 heading
(Critically important)
We're celebrating 40 years of transforming science education.
The H1 heading is perfect.
Headings
(Important)
There are 26 headings on the page. The amount of headings should be in a more proper relation to the amount of text.

Heading structure

Heading levelContent
H1 We're celebrating 40 years of transforming science education.
H2 Featured Content
H2 You hold the potential to change thousands of lives by nurturing the inner scientist in young people.
H3 We are transforming K-12 Education Through Science in collaboration with communities across the globe.
H4 Read about Douglas M. Lapp and Anne B. Keiser and what their generous gift means to the Smithsonian!
H4 Diverse Stories of Resilience: The Power of Community
H4 Educating for Sustainable Development: Opportunities for Progress in the U.S.
H4 Educating for Sustainable Development: Perspectives of U.S. and Global Educators Report
H4 Diverse Stories of Resilience: Indigenous Wisdom
H4 2023 Sustainable Communities Global Action Research Project: Youth Inspiring Truth, Trust, & Hope
H4 2021-2026 Strategic Plan
H4 Sustainable Communities! How will we help our community thrive?
H4 Vaccines! How can we use science to help our community make decisions about vaccines?
H4 Pick Your Plate! Guía Global de Nutrición
H4 Stories of Women in STEM at the Smithsonian
H4 Distance Learning and Digital Resources from the Smithsonian
H4 COVID-19! How Can I Protect Myself and Others?
H4 Distance Learning
H4 Pick Your Plate! A Global Guide to Nutrition
H4 Smithsonian Science for Global Goals
H4 The power of physical 'stuff' in our digital world | Carol O'Donnell | TEDxFoggyBottom
H4 Focus on the Stuff
H4 Smithsonian Science Stories
H4 Smithsonian Science for Makerspaces
H4 Smithsonian Science for the Classroom
H4 Game Center
Some internal links have dynamic parameters. All internal URLs, which are not marked as nofollow, should not contain dynamic parameters.
Some anchor texts are used more than once.
The number of internal links is ok.
None of the anchor texts is too long.
There are 9 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://ssec.si.edu/Anchor Skip to main content
https://ssec.si.edu/Smithsonian Science Education Center
https://ssec.si.edu/about-usAbout Us
https://ssec.si.edu/newsNews
https://ssec.si.edu/eventsEvents
https://ssec.si.edu/game-centerGames
/stemvisions-blogBlog
/distancelearningSubdomain Distance Learning
/40th-anniversarySubdomain 40th Anniversary
/directors-circleSubdomain Director's Circle
/?form=FUNRAUHBRSBSubdomain Donate
https://ssec.si.edu/our-goalsSubdomain Goals
/k-12-stem-teaching-and-learningSubdomain Innovation
https://ssec.si.edu/deai-stemSubdomain Inclusion
/sustainable-developmentSubdomain Sustainability
/explore-our-curriculum-resourcesCurriculum
/smithsonian-science-for-the-c...Subdomain Smithsonian Science for the Classroom
https://ssec.si.edu/global-goalsSubdomain Smithsonian Science for Global Goals
/smithsonian-science-storiesSubdomain Smithsonian Science Stories
https://ssec.si.edu/stcmsSubdomain STCMS
/explore-our-curriculum-resour...Subdomain STC Curriculum
/explore-smithsonianSubdomain Explore Smithsonian
/explore-our-curriculum-resour...Subdomain Free Resources
https://ssec.si.edu/makerspacesSubdomain Smithsonian Science for Makerspaces
/girls-and-women-in-stemSubdomain Girls and Women in STEM
/computational-thinkingSmithsonian Science for Computational Thinking
https://ssec.si.edu/ebooksWomen in STEM eBook Series
/futures-toolkitFutures
/professional-developmentSubdomain Professional Development
/smithsonian-science-nc-and-sc...Subdomain Smithsonian Science for NC and SC Classrooms
/smithsonian-science-education...Subdomain Smithsonian Science Education Academies for Teachers
https://ssec.si.edu/goodthinkingSubdomain Good Thinking!
https://ssec.si.edu/quick-tipsSubdomain Quick Tips for Teachers
/english-learners-stemSubdomain English Learners in STEM
https://ssec.si.edu/eventsSubdomain Upcoming Events
/leadership-developmentSubdomain Leadership Development
https://ssec.si.edu/zero-barriersSubdomain Zero Barriers in STEM
https://ssec.si.edu/nesstNetwork for Emergent Socio-Scientific Thinking (NESST)
/STEM-diversitySubdomain Science Education Summit
/strategic-planning-instituteSubdomain Strategic Planning Institute
/event/smithsonian-science-act...Subdomain Action Planning Institute
https://ssec.si.edu/laser-modelSubdomain LASER
/building-awareness-science-ed...Subdomain Building Awareness for Science Education
/next-steps-instituteSubdomain Next Steps Institute
https://ssec.si.edu/eventsSubdomain Text duplicate Upcoming Events
/community-outreachSubdomain Outreach
https://ssec.si.edu/mapSubdomain Where We Are
/smithsonian-science-summer-sc...Subdomain Smithsonian Science for Summer School (S4)
https://ssec.si.edu/atlasSubdomain Always Thinking Like A Scientist (ATLAS)
https://ssec.si.edu/stem-literacySubdomain STEM Literacy Project
/success-storiesSubdomain Success Stories
/france-in-focusFrance in Focus
/global-goals-researchSmithsonian Science for Global Goals Research
/youth-stem-exchangeSmithsonian Youth STEM Exchange
https://www.si.edu/newsdesk/re...External Subdomain Read about Douglas M. Lapp and Anne B. Keiser and what their generous gift means to the Smithsonian
/diverse-stories-resilience-po...Video Diverse Stories of Resilience: The Power of Community
/ESD-Opportunities-for-Progres...Resource Educating for Sustainable Development: Opportunities for Progress in the U.S.
IMG-ALT A blue background with a five students surrounding an educator with long dark brown hair examining a group of plants.
/educating-for-sustainable-dev...Resource Educating for Sustainable Development: Perspectives of U.S. and Global Educators Report
IMG-ALT Cover of Educating for Sustainable development perspectives of US and Global Educators
/diverse-stories-resilience-in...Video Diverse Stories of Resilience: Indigenous Wisdom
/2023-sustainable-communities-...2023 Sustainable Communities Global Action Research Project: Youth Inspiring Truth, Trust, & Hope
/strategic-plan2021-2026 Strategic Plan
/sustainable-communitiesCurriculum Sustainable Communities! How will we help our community thrive?
IMG-ALT Sustainable Communities
https://ssec.si.edu/vaccinesCurriculum Vaccines! How can we use science to help our community make decisions about vaccines?
IMG-ALT Vaccines Cover
/pick-your-plate-espanolGame Pick Your Plate! Guía Global de Nutrición
IMG-ALT Pick Your Plate! Guía Global de Nutrición title screen
https://ssec.si.edu/women-in-stemeBook Stories of Women in STEM at the Smithsonian
IMG-ALT A blue tone image of the Smithsonian castle with text that says Stories of women in STEM at the Smithsonian
/distance-learning-and-digital...Resource Distance Learning and Digital Resources from the Smithsonian
https://ssec.si.edu/covid-19Curriculum COVID-19! How Can I Protect Myself and Others?
IMG-ALT Image of cover of "COVID-19! How Can I Protect Myself and Others?" The main image is an illustration of the coronavirus.
/distancelearningText duplicate Distance Learning
/pick-your-plateGame Pick Your Plate! A Global Guide to Nutrition
IMG-ALT Pick Your Plate! A Global Guide to Nutrition title screen
/global-goals-archiveText duplicate Smithsonian Science for Global Goals
/stemvisions-blog/power-physic...Blogpost The power of physical 'stuff' in our digital world | Carol O'Donnell | TEDxFoggyBottom
https://ssec.si.edu/focus-stuffResource Focus on the Stuff
/smithsonian-science-storiesText duplicate Smithsonian Science Stories
https://ssec.si.edu/makerspacesText duplicate Smithsonian Science for Makerspaces
/smithsonian-science-for-the-c...Text duplicate Smithsonian Science for the Classroom
https://ssec.si.edu/game-centerGame Center
https://ssec.si.edu/contact-usSubdomain Contact Us To Learn More
/donate-archiveText duplicate Donate
/our-newsletterOur Newsletter
https://ssec.si.edu/about-usText duplicate About Us
/stemvisions-blogSTEMvisions Blog
http://www.si.edu/External Subdomain SI Home
http://www.si.edu/PrivacyExternal Subdomain Privacy
http://www.si.edu/TermsofuseExternal Subdomain Terms of Use
https://twitter.com/Smithsonia...External Twitter
https://www.facebook.com/Smith...External Subdomain Facebook
https://www.youtube.com/@smith...External Subdomain Youtube
https://www.linkedin.com/compa...External Subdomain LinkedIn
https://www.instagram.com/smit...External Subdomain Instagram

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://ssec.si.edu/"
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 is very slow (4.67 seconds). The response time should be less than 0.4 seconds. Slow websites are bad for search engine bots and also result in bad user experience.
This page loads 22 JavaScript files. This may affect the load time negatively.
This page does not require any CSS files.
The file size of the HTML document is fine (45 kB).

HTTP Response Header

NameValue
x-drupal-cacheHIT
content-languageen
x-frame-optionsSAMEORIGIN
link<https://ssec.si.edu/>; rel="canonical",<https://ssec.si.edu/>; rel="shortlink"
cache-controlpublic, max-age=21600
varyCookie,Accept-Encoding
strict-transport-securitymax-age=31536000; includeSubDomains; preload
x-content-type-optionsnosniff
upgradeh2,h2c
etag"1764462252-0"
last-modifiedSun, 30 Nov 2025 00:24:12 GMT
access-control-allow-originhttps://ssec.si.edu
keep-alivetimeout=5, max=100
content-typetext/html; charset=utf-8
content-encodinggzip
accept-rangesbytes
connectionclose
dateSun, 30 Nov 2025 01:16:00 GMT
expiresSun, 30 Nov 2025 07:16:01 GMT
age0
content-length15543
statuscode200
http_versionHTTP/1.1

External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 346 referring domains.
This page has 1,524 backlinks.
This page has backlinks from 193 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

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

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Most important keywords

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

KeywordResultRecheck
Science70%Check
Education70%Check
Science Education70%Check
Smithsonian Science Education68%Check
Smithsonian Science67%Check
Smithsonian Science Education Center66%Check
Smithsonian65%Check
Education Center64%Check
STEM Education59%Check
Education Resources57%Check
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