Code.org - SEO Checker

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Overview of the SEO Check
Meta information
75% 
Page quality
61% 
Page structure
41% 
Link structure
97% 
Server
91% 
External factors
74% 
SEO Score
Response time
0.22 s
File size
478.80 kB
Words
746
Media files
24
Number of links
27 internal / 13 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Free K–12 Curriculum for Computer Science and AI | Code.org
The length of the page title is perfect. (559 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Bring computer science and AI education to your classroom with Code.org’s free K–12 curriculum, hands-on projects, and teacher professional development—no prior experience needed.
The meta description is too long: 1147 pixels from max. 1000 pixels. Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.code.org/
The specified canonical link points to a different page.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en-us
Server location: Germany
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
descriptionBring computer science and AI education to your classroom with Code.org’s free K–12 curriculum, hands-on projects, and teacher professional development—no prior experience needed.
keywordscomputer science curriculum,AI education,K–12 computer science,free coding lessons,artificial intelligence curriculum,coding for kids,STEM education,teacher training computer science,CS professional development,computer science for schools,AI in the classroom,coding resources for teachers,computer science standards,free K–12 curriculum,project-based coding,Code.org,code dot org
robotsindex, follow
langen-us
twitter:cardsummary_large_image
twitter:titleFree K–12 Curriculum for Computer Science and AI | Code.org
twitter:descriptionBring computer science and AI education to your classroom with Code.org’s free K–12 curriculum, hands-on projects, and teacher professional development—no prior experience needed.
twitter:imagehttps://contentful-images.code.org/90t6bu6vlf76/6QAykNTAjFdgHya4lBchyF/539e119f045b74395ec9aca97bacf6ed/opengraph-default.png?fm=avif
og:titleFree K–12 Curriculum for Computer Science and AI | Code.org
og:descriptionBring computer science and AI education to your classroom with Code.org’s free K–12 curriculum, hands-on projects, and teacher professional development—no prior experience needed.
og:url/en-US
og:localeen-US
og:imagehttps://contentful-images.code.org/90t6bu6vlf76/6QAykNTAjFdgHya4lBchyF/539e119f045b74395ec9aca97bacf6ed/opengraph-default.png?fm=avif
og:typewebsite
charsetutf-8

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Page quality

Content
(Critically important)
Some words from the page title are not used within the pages content
There are 5 text duplicates on this page:
  • Duplicate 1: Can I just say I LOVE Code.org? It's my first year teaching AP CS Prin...
  • Duplicate 2: Support our mission to make CS and AI accessible to every child. Your ...
This page contains 746 words. That's ok.
33.2% of the text are stop words.
Words from the H1 heading are used in the page content.
The page contains a listing, which indicates a good text layout.
18 paragraphs were found on this page.
No placeholders texts or images were found.
The average number of words per sentence of 11.93 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" is provided.
Bold and strong tags
(Somewhat important)
The following tag is repeated too often: jennifer douglass
Image SEO
(Somewhat important)
22 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
...atic/media/cdo-logo-inverse.062eac04.svgCode.org logo
...8d10606e29/aif_July2025_trim.gif?fm=avifNo alt attribute provided
...fd1da10c19d31/student-square.png?fm=avifNo alt attribute provided
...15423f2d93a2b58/teacher-icon.png?fm=avifNo alt attribute provided
...984719300ad405f/parents-icon.png?fm=avifNo alt attribute provided
...59141505fa2ea096/school-icon.png?fm=avifNo alt attribute provided
...b8e0c1f972b66698/catalog-new.jpg?fm=avifNo alt attribute provided
...f0/professional-learning-new.png?fm=avifNo alt attribute provided
...2065ef/ai-cover-generic__1_.avif?fm=avifNo alt attribute provided
...a86be6fcf72/quote-icon-white.svg?fm=avifNo alt attribute provided
...a86be6fcf72/quote-icon-white.svg?fm=avifNo alt attribute provided
...00169195e/donate-cover-image.jpg?fm=avifNo alt attribute provided
...9c70b12e4991e502d/Image_copy.png?fm=avifNo alt attribute provided
...4ed1fbdec/advocacy-cover-min.jpg?fm=avifNo alt attribute provided
...2e6a78a478/amazon-logo-block.jpg?fm=avifNo alt attribute provided
...31d1dbb/microsoft-logo-block.jpg?fm=avifNo alt attribute provided
...8c9edb7947/google-logo-block.jpg?fm=avifNo alt attribute provided
...217c16c9/facebook-logo-block.jpg?fm=avifNo alt attribute provided
...e3b4d8008/ballmer-logo-block.jpg?fm=avifNo alt attribute provided
...ffd02a2ef/infosys-logo-block.jpg?fm=avifNo alt attribute provided
...ef8805e2737/vista-logo-block.jpg?fm=avifNo alt attribute provided
...850fbad/billgates-logo-block.jpg?fm=avifNo alt attribute provided
...db4de32f7/omidyar-logo-block.jpg?fm=avifNo alt attribute provided
...static/media/powered-by-aws.b12e4dc3.pngPowered by AWS Cloud Computing

Page structure

H1 heading
(Critically important)
Want to bring AI into your classroom?
Too many H1 headings
Headings
(Important)
Some headings occur twice on the page.
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H1 Want to bring AI into your classroom?
H1 102M
H1 3M
H2 Start your journey with Code.org
H2 Expanding access to computer science for over a decade
H2 Code.org by the numbers
H2 102M Duplicate text
H2 3M Duplicate text
H2 332M
H2 50
H2 The most widely used CS curriculum in the U.S.
H2 Professional learning for teachers at all levels
H2 Bring artificial intelligence to your classroom
H2 A trusted, global community of teachers and learners
H2 Help expand access to computer science
H2 Backed by global leaders
H2 Join millions teaching and learning with Code.org
H3 Donate to Code.org
H3 District Program
H3 Advocacy Coalition
H5 Students
H5 Educators
H5 Parents
H5 Districts
Some anchor texts are used more than once.
The number of internal links is ok.
None of the anchor texts is too long.
All internal links are not using dynamic parameters.
There are 13 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://code.org/IMG-ALT Code.org logo
https://code.org/studentsLearn
https://code.org/teachTeach
https://code.org/administratorsDistricts
https://code.org/promoteStats
https://code.org/donateDonate
https://code.org/incubatorIncubator
https://code.org/aboutAbout
/en-US/professional-learning/s...Anchor Start learning now
https://code.org/studentsExplore learning
https://code.org/teachersTeach with Code.org
https://code.org/parentsGet started at home
https://code.org/administratorsCode.org for districts
https://studio.code.org/users/...External Subdomain Sign up for free
https://code.org/aboutLearn about Code.org
https://code.org/promoteExplore more stats
https://code.org/aboutLearn about our mission
https://studio.code.org/catalogExternal Subdomain Explore curriculum catalog
/professional-learningExplore professional learning
https://code.org/aiExplore AI curricula
https://donate.code.org/campai...New window External Subdomain Donate to Code.org
https://code.org/districtsDiscover our District Program
https://advocacy.code.org/New window External Subdomain Advocate for CS
https://code.org/Button
https://code.org/about/supportersMeet our supporters
https://studio.code.org/users/...External Subdomain Text duplicate Sign up for free
https://code.org/privacyPrivacy Policy
https://code.org/cookiesManage Cookies
https://code.org/aboutText duplicate About
https://code.org/partnersPartners
https://medium.com/@codeorgExternal Blog
https://code.org/donateText duplicate Donate
https://store.code.org/External Subdomain Store
https://support.code.org/External Subdomain Support
https://code.org/tosTerms
https://www.facebook.com/Code....External Subdomain No Text
https://twitter.com/codeorgExternal No Text
https://www.instagram.com/code...External Subdomain No Text
https://medium.com/@codeorgExternal No Text
https://aws.amazon.com/what-is...External Subdomain IMG-ALT Powered by AWS Cloud Computing

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://code.org/en-US"
HTTP header
(Important)
The X-powered header is sent within the response header. (unnecessary)
The web server transmits the web page (HTML) in compressed form.
Performance
(Somewhat important)
The page response time is excellent with 0.22 seconds.
The file size of the HTML document is fine (479 kB).

HTTP Response Header

NameValue
content-typetext/html; charset=utf-8
serverCloudFront
dateThu, 03 Jul 2025 00:02:23 GMT
etag"15kxo8maajcai64"
content-encodinggzip
x-middleware-rewrite/Code.org/en-US
x-nextjs-cacheHIT
x-nextjs-prerender1
x-nextjs-stale-time4294967294
x-powered-byNext.js
cache-controls-maxage=900, stale-while-revalidate=31535100
via1.1 717a0e7af2a3da4138a71f64ce4675d0.cloudfront.net (CloudFront), 1.1 a4079c0a5989b4b7af98433fdd07f680.cloudfront.net (CloudFront)
set-cookie41 Characters
x-amz-cf-popIAD55-P6
varyAccept-Encoding
x-cacheHit from cloudfront
x-amz-cf-idYizom5vOtOxNbTyDav2QN0G7D-KDNzjEAeI37-mrrZFqP3jP7kk3oA==
age2861
statuscode200
http_versionHTTP/2

External factors

This page has only a few links from other websites.
This page only has backlinks from 8 referring domains.
This page only has 15 backlinks.
This page only has few backlinks from 8 different ip addresses.
This page is referenced by wikipedia.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

User-agent: *

Disallow:

Similar sites

Search preview

code.org › en-US
Free K–12 Curriculum for Computer Science and AI | Code.org
Bring computer science and AI education to your classroom with Code.org’s free K–12 curriculum, hands-on projects, and teacher professional development—no prior experience needed.

Most important keywords

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

KeywordResultRecheck
Code74%Check
org74%Check
computer66%Check
Computer Science66%Check
bring66%Check
classroom66%Check
bring computer66%Check
bring computer science65%Check
curriculum62%Check
or parent59%Check
Show more keywords and terms

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