Cast.org - SEO Checker

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Overview of the SEO Check
Meta information
100% 
Page quality
71% 
Page structure
95% 
Link structure
88% 
Server
96% 
External factors
100% 
SEO Score
Response time
0.47 s
File size
91.60 kB
Words
437
Media files
4
Number of links
65 internal / 13 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
CAST | Until learning has no limits.
The length of the page title is perfect. (310 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Explore innovative educational solutions and inclusive learning with CAST (leaders in Universal Design for Learning) and transform education for all students.
The length of the meta description is perfect. (967 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.cast.org/
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en-us
Server location: United States of America
The following language is defined by HTML: en-us
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
theme-color#301c5c
robotsmax-snippet:-1,max-image-preview:large,max-video-preview:-1
descriptionExplore innovative educational solutions and inclusive learning with CAST (leaders in Universal Design for Learning) and transform education for all students.
msapplication-TileImagehttps://www.cast.org/wp-content/uploads/2024/12/cast-icon-512-inverse-300x300.png
langen-us
twitter:cardsummary_large_image
twitter:titleCAST
twitter:descriptionExplore innovative educational solutions and inclusive learning with CAST (leaders in Universal Design for Learning) and transform education for all students.
twitter:imagehttps://www.cast.org/wp-content/uploads/2024/12/cast-icon-512-inverse.png
twitter:image:altCAST logo symbol
og:typewebsite
og:localeen_US
og:site_nameCAST
og:titleCAST
og:descriptionExplore innovative educational solutions and inclusive learning with CAST (leaders in Universal Design for Learning) and transform education for all students.
og:urlhttps://www.cast.org/
og:imagehttps://www.cast.org/wp-content/uploads/2024/12/cast-icon-512-inverse.png
og:image:width512
og:image:height512
og:image:altCAST logo symbol
cleartypeon
charsetUTF-8

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Page quality

Content
(Critically important)
There are only 437 words on this page. Good pages should have about 800 words of useful content.
31.4% 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.
5 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 20.7 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" is provided.
At least one Apple touch icon is specified.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 9 tags for this page.
Image SEO
(Somewhat important)
1 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
...2024/12/AdobeStock_539905442-scaled.jpegNo alt attribute provided
...con_2025_capitol_hill_square-800x800.pngPhoto of Capitol Hill in Washington DC at sunset
...2024/12/AdobeStock_391751497-scaled.jpegCreating success. Group of young happy multi racial business people communicating and sharing ideas while working together in the modern office. Teamwork and cooperation concept
...es/cast/images/40th-anniversary-logo.svgCAST logo

Page structure

H1 heading
(Critically important)
The H1 heading is empty
Headings
(Important)
Some headings do not have any content.

Heading structure

Heading levelContent
H1 Empty heading
H2 Universal Design for Learning
H2 A global community fostering positive change
H3 40+
H3 19k
H3 21
H3 42
H4 Join us for UDL-Con: International 2025!
H5 Search
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 13 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://www.cast.org/Anchor Skip to main content
https://udlguidelines.cast.org/External Subdomain UDL Guidelines
https://aem.cast.org/External Subdomain AEM
https://cites.cast.org/External Subdomain CITES
https://www.cast.org/donate/Subdomain Donate
https://www.cast.org/No Text
http://castpublishing.publishe...New window External Subdomain Link to the CAST store
https://www.cast.org/about/Subdomain Go to cart
https://udlguidelines.cast.org/External Subdomain Text duplicate UDL Guidelines
https://aem.cast.org/External Subdomain Text duplicate AEM
https://cites.cast.org/External Subdomain Text duplicate CITES
https://www.cast.org/donate/Subdomain Text duplicate Donate
https://www.cast.org/what-we-do/Subdomain What We Do
/what-we-do/universal-design-f...Subdomain Universal Design for Learning
/what-we-do/prek-12-profession...Subdomain PreK-12 Professional Development
/what-we-do/postsecondary-prof...Subdomain Postsecondary Professional Development
/what-we-do/workforce-professi...Subdomain Workforce Professional Development
/what-we-do/research/Subdomain Research
/what-we-do/publishing/Subdomain Publishing
/what-we-do/partnerships/Subdomain Partnerships
/what-we-do/evidence/Subdomain Evidence
/what-we-do/accessibility-incl...Subdomain Accessibility & Inclusive Technology
/what-we-do/artificial-intelli...Subdomain Artificial Intelligence
https://www.cast.org/our-impact/Subdomain Our Impact
/our-impact/case-studies/Subdomain Case Studies
/our-impact/projects/Subdomain Projects
/our-impact/annual-report/Subdomain Annual report & financial information
https://www.cast.org/connect/Subdomain Connect
/connect/events/Subdomain Events
/connect/events/udl-con-intern...Subdomain UDL-Con: International
/connect/online-community/Subdomain Online Community
/connect/newsroom/Subdomain Newsroom
/connect/learning-experience-p...Subdomain Podcast
https://www.cast.org/resources/Subdomain Resources
/resources/courses/?_event_fut...Subdomain Courses
/resources/certifications/Subdomain Credentials & Certifications
/resources/books-media-catalog/Subdomain Books & Media Catalog
/resources/school-implementati...Subdomain Schoolwide Implementation Criteria
/resources/tips-articles/Subdomain Tips & Articles
/resources/whitepapers/Subdomain Whitepapers
/resources/digital-tools/Subdomain Digital Tools
https://www.cast.org/about/Subdomain About
/about/mission-vision/Subdomain Mission & Vision
https://www.cast.org/about/team/Subdomain Team
https://www.cast.org/about/board/Subdomain Board
/about/funders-partners/Subdomain Funders & Partners
/about/careers/Subdomain Careers
https://www.cast.org/contact/Subdomain Contact
https://www.cast.org/what-we-do/Subdomain Discover how we innovate for learning
/what-we-do/universal-design-f...Text duplicate Universal Design for Learning
/connect/events/udl-con-intern...Subdomain Learn more about UDL-Con: International
/what-we-do/universal-design-f...Subdomain Learn more about UDL
https://udlguidelines.cast.org/External Subdomain Explore the UDL Guidelines
/what-we-do/prek-12-profession...Subdomain Text duplicate PreK-12 Professional Development
/what-we-do/workforce-professi...Subdomain Text duplicate Workforce Professional Development
/what-we-do/publishing/Subdomain Text duplicate Publishing
/what-we-do/evidence/Subdomain Text duplicate Evidence
/what-we-do/postsecondary-prof...Subdomain Text duplicate Postsecondary Professional Development
/what-we-do/research/Subdomain Text duplicate Research
/what-we-do/partnerships/Subdomain Text duplicate Partnerships
/what-we-do/accessibility-incl...Subdomain Accessibility
https://www.cast.org/IMG-ALT CAST logo
https://www.cast.org/contact/Contact Us
https://www.cast.org/donate/Donate Now
/about/careers/Subdomain Text duplicate Careers
/our-impact/annual-report/Subdomain Financial information
https://www.cast.org/contact/Media inquiries
/resources/subscribe-for-updates/Subdomain Subscribe to our newsletter
/connect/online-community/Subdomain Join our community
https://udlguidelines.cast.org/External Subdomain Text duplicate UDL Guidelines
https://www.linkedin.com/compa...External Subdomain LinkedIn
https://bsky.app/profile/cast-...External Bluesky
https://twitter.com/CAST_UDLExternal X/Twitter
https://www.youtube.com/user/U...External Subdomain YouTube
/accessibility/Subdomain Accessibility Policy
/privacy-policy/Subdomain Privacy Policy
/terms-of-use/Subdomain Terms of Use
https://www.cast.org/copyright/Subdomain Copyright Notice

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.cast.org/"
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 0.47 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 (92 kB).

HTTP Response Header

NameValue
cache-controlpublic, max-age=604800
content-encodinggzip
content-typetext/html; charset=UTF-8
link<https://www.cast.org/wp-json/>; rel="https://api.w.org/"
servernginx
strict-transport-securitymax-age=300
x-pantheon-styx-hostnamestyx-fe2-a-8cb8f9598-pgtq2
x-styx-req-id4b279de6-0138-11f0-911e-66f61e7d7fe8
dateSat, 15 Mar 2025 01:08:16 GMT
x-served-bycache-chi-kigq8000035-CHI, cache-fra-eddf8230142-FRA
x-cacheHIT, HIT
x-cache-hits16, 0
x-timerS1742000897.739148,VS0,VE2
varyAccept-Encoding, Cookie, Cookie
age722
accept-rangesbytes
via1.1 varnish, 1.1 varnish
content-length28040
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 5,877 referring domains.
This page has 1,089,011 backlinks.
This page has backlinks from 4,042 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

User-agent: *
Disallow: /wp-admin/
Allow: /wp-admin/admin-ajax.php

Sitemap: https://www.cast.org/sitemap.xml

Similar sites

Search preview

www.cast.org
CAST | Until learning has no limits.
Explore innovative educational solutions and inclusive learning with CAST (leaders in Universal Design for Learning) and transform education for all students.

Most important keywords

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

KeywordResultRecheck
CAST73%Check
Learning62%Check
inclusive learning54%Check
limits51%Check
Design50%Check
Universal50%Check
Universal Design50%Check
Inclusive46%Check
education46%Check
explore46%Check
Show more keywords and terms

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