Oyc.yale.edu - SEO Checker

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Overview of the SEO Check
Meta information
74% 
Page quality
82% 
Page structure
79% 
Link structure
100% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.11 s
File size
22.60 kB
Words
561
Media files
6
Number of links
12 internal / 12 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Welcome | Open Yale Courses
The length of the page title is perfect. (274 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://oyc.yale.edu/node/3
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)
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)
This page is hosted on a subdomain. Use a top level domain for better SEO results.
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
GeneratorDrupal 10 (https://www.drupal.org)
MobileOptimizedwidth
HandheldFriendlytrue
viewportwidth=device-width, initial-scale=1.0
langen
charsetutf-8

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Page quality

Content
(Critically important)
There are 2 text duplicates on this page:
  • Duplicate: Open Yale Courses provides free and open access to a selection of intr...
This page contains 561 words. That's ok.
36.9% 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.
12 paragraphs were found on this page.
The text content is perfect.
No placeholders texts or images were found.
The average number of words per sentence of 23.95 words is good.
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=1.0" is provided.
Bold and strong tags
(Somewhat important)
The following tag is repeated too often: open yale courses
Image SEO
(Somewhat important)
2 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
...1/gendler_1.jpg?h=44acfa4c&itok=NDgQOgayCourse Image 1
...1/kleiner_1.jpg?h=44acfa4c&itok=-QTP8BGaCourse Image 2
...11/rogers_1.jpg?h=44acfa4c&itok=MyDmFt93Course Image 3
.../shiller2_1.jpg?h=44acfa4c&itok=TNdgEXZpCourse Image 4
/sites/default/files/hew.pngNo alt attribute provided
/sites/default/files/yale_online_site.jpgNo alt attribute provided

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 Secondary navigation
H2 Main navigation
H2 Footer
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 12 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://oyc.yale.edu/Anchor Skip to main content
http://www.yale.edu/External Subdomain Yale University
https://oyc.yale.edu/helpHelp
https://oyc.yale.edu/Open Yale Courses
https://oyc.yale.edu/coursesCourses
https://oyc.yale.edu/aboutAbout
https://oyc.yale.edu/termsTerms of Use
https://oyc.yale.edu/support-oycSupport OYC
/philosophy/phil-181Philosophy and the Science of Human Nature with Tamar Gendler
/history-of-art/hsar-252Roman Architecture with Diana E. E. Kleiner
/english/engl-220Milton with John Rogers
/economics/econ-252Financial Markets (2011) with Robert J. Shiller
/american-studies/amst-246Hemingway, Fitzgerald, Faulkner with Wai Chee Dimock
http://ctl.yale.edu/using-tech...New window External Subdomain The Center for Teaching and Learning
http://online.yale.edu/New window External Subdomain No Text
http://www.yale.edu/External Subdomain Yale
https://usability.yale.edu/web...External Subdomain Accessibility at Yale
https://privacy.yale.edu/resou...External Subdomain Privacy policy
https://www.facebook.com/YaleU...New window External Subdomain facebook
http://www.twitter.com/yaleNew window External Subdomain twitter
http://itunes.yale.edu/New window External Subdomain itunes
http://www.youtube.com/yaleNew window External Subdomain youtube
http://weibo.com/yaleuniversityNew window External weibo
http://yaleuniversity.tumblr.com/New window External Subdomain tumblr

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://oyc.yale.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 excellent with 0.11 seconds.
The file size of the HTML document is fine (23 kB).

HTTP Response Header

NameValue
cache-controlmax-age=3600, public
content-encodinggzip
content-languageen
content-typetext/html; charset=UTF-8
etagW/"1768498854"
expiresSun, 19 Nov 1978 05:00:00 GMT
last-modifiedThu, 15 Jan 2026 17:40:54 GMT
servernginx
strict-transport-securitymax-age=300
x-content-type-optionsnosniff
x-drupal-cacheHIT
x-drupal-dynamic-cacheMISS
x-frame-optionsSAMEORIGIN
x-generatorDrupal 10 (https://www.drupal.org)
x-pantheon-styx-hostnamestyx-fe1-b-56d5f56cb8-5zhln
x-styx-req-id100c72bf-f240-11f0-80f1-ea94eb0d7bf6
dateFri, 16 Jan 2026 18:47:14 GMT
x-served-bycache-chi-klot8100162-CHI, cache-par-lfpg1960031-PAR
x-cacheHIT, HIT
x-cache-hits33, 0
x-timerS1768589235.781478,VS0,VE7
varyAccept-Encoding, Cookie, Cookie, Cookie
age629
accept-rangesbytes
via1.1 varnish, 1.1 varnish
content-length6391
statuscode200
http_versionHTTP/2

External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 703 referring domains.
This page has 3,531 backlinks.
This page has backlinks from 609 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: *
# CSS, JS, Images
Allow: /core/*.css$
Allow: /core/*.css?
Allow: /core/*.js$
Allow: /core/*.js?
Allow: /core/*.gif
Allow: /core/*.jpg
Allow: /core/*.jpeg
Allow: /core/*.png
Allow: /core/*.svg
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: /profiles/*.svg
# Directories
Disallow: /core/
Disallow: /profiles/
# Files
Disallow: /README.md
Disallow: /composer/Metapackage/README.txt
Disallow: /composer/Plugin/ProjectMessage/README.md
Disallow: /composer/Plugin/Scaffold/README.md
Disallow: /composer/Plugin/VendorHardening/README.txt
Disallow: /composer/Template/README.txt
Disallow: /modules/README.txt
Disallow: /sites/README.txt
Disallow: /themes/README.txt
Disallow: /web.config
# 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
Disallow: /media/oembed
Disallow: /*/media/oembed
# Paths (no clean URLs)
Disallow: /index.php/admin/
Disallow: /index.php/comment/reply/
Disallow: /index.php/filter/tips
Disallow: /index.php/node/add/
Disallow: /index.php/search/
Disallow: /index.php/user/password
Disallow: /index.php/user/register
Disallow: /index.php/user/login
Disallow: /index.php/user/logout
Disallow: /index.php/media/oembed
Disallow: /index.php/*/media/oembed

#
# 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: *
# CSS, JS, Images
Allow: /core/*.css$
Allow: /core/*.css?
Allow: /core/*.js$
Allow: /core/*.js?
Allow: /core/*.gif
Allow: /core/*.jpg
Allow: /core/*.jpeg
Allow: /core/*.png
Allow: /core/*.svg
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: /profiles/*.svg
# Directories
Disallow: /core/
Disallow: /profiles/
# Files
Disallow: /README.md
Disallow: /composer/Metapackage/README.txt
Disallow: /composer/Plugin/ProjectMessage/README.md
Disallow: /composer/Plugin/Scaffold/README.md
Disallow: /composer/Plugin/VendorHardening/README.txt
Disallow: /composer/Template/README.txt
Disallow: /modules/README.txt
Disallow: /sites/README.txt
Disallow: /themes/README.txt
Disallow: /web.config
# 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
Disallow: /media/oembed
Disallow: /*/media/oembed
# Paths (no clean URLs)
Disallow: /index.php/admin/
Disallow: /index.php/comment/reply/
Disallow: /index.php/filter/tips
Disallow: /index.php/node/add/
Disallow: /index.php/search/
Disallow: /index.php/user/password
Disallow: /index.php/user/register
Disallow: /index.php/user/login
Disallow: /index.php/user/logout
Disallow: /index.php/media/oembed
Disallow: /index.php/*/media/oembed

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Search preview

Most important keywords

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

KeywordResultRecheck
Yale64%Check
Open Yale57%Check
Yale Courses57%Check
Open Yale Courses55%Check
Courses51%Check
Open51%Check
Welcome51%Check
Yale University49%Check
Yale College49%Check
OYC46%Check
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