Khanacademy.org - SEO Checker

Overview of the SEO Check
Meta information
80% 
Page quality
60% 
Page structure
100% 
Link structure
67% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.14 s
File size
234.90 kB
Words
737
Media files
33
Number of links
144 internal / 19 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Khan Academy | Free Online Courses, Lessons & Practice
The length of the page title is perfect. (523 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.
The meta description is too long: 1497 pixels from max. 1000 pixels. Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
No canonical link is 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)
The favicon is linked correctly.

Meta tags

NameValue
descriptionLearn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.
viewportwidth=device-width, initial-scale=1.0, maximum-scale=1.0
titleKhan Academy | Free Online Courses, Lessons & Practice
langen
twitter:site@khanacademy
twitter:cardsummary_large_image
twitter:titleKhan Academy | Free Online Courses, Lessons & Practice
twitter:descriptionLearn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.
twitter:imagehttps://cdn.kastatic.org/images/khan-logo-dark-background-2.png
fb:app_id160249463991765
fb:admins100000121497109,1305017,100001572496923
fb:page_id159403248441
og:site_nameKhan Academy
og:typenon_profit
og:titleKhan Academy | Free Online Courses, Lessons & Practice
og:descriptionLearn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.
og:image:width381
og:image:height200
og:imagehttps://cdn.kastatic.org/images/khan-logo-dark-background-2.png
Content-Typetext/html; charset=UTF-8

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Page quality

Content
(Critically important)
Some words from the page title are not used within the pages content
Words from the H1 heading are not used in the page content.
These Typos were found:
  • lsat => last
This page contains 737 words. That's ok.
26.6% of the text are stop words.
The page contains a listing, which indicates a good text layout.
8 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 11.59 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
A viewport "width=device-width, initial-scale=1.0, maximum-scale=1.0" 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 15 tags for this page.
Image SEO
(Somewhat important)
23 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
...ages/lohp/hero_student_collage_US_2x.pngNo alt attribute provided
...pic-icons/icons/math.png-444b34-128c.pngNo alt attribute provided
...pic-icons/icons/math.png-444b34-128c.pngNo alt attribute provided
...pic-icons/icons/math.png-444b34-128c.pngNo alt attribute provided
...eading_language_arts.png-58ff5a-128c.pngNo alt attribute provided
...ns/icons/life_skills.png-1a4785-128c.pngNo alt attribute provided
.../icons/science_green.png-4ca7bf-128c.pngNo alt attribute provided
...cons/icons/test_prep.png-f7c71f-128c.pngNo alt attribute provided
...ons/computing_orange.png-653676-128c.pngNo alt attribute provided
...cons/arts_humanities.png-07c77b-128c.pngNo alt attribute provided
...ns/economics_finance.png-55daed-128c.pngNo alt attribute provided
...cons/partner_content.png-1b8f1b-128c.pngNo alt attribute provided
...ages/lohp/personalized_learning_icon.pngNo alt attribute provided
...org/images/lohp/trusted_content_icon.pngNo alt attribute provided
...rg/images/lohp/empower_teachers_icon.pngNo alt attribute provided
...c.org/images/lohp/[email protected]No alt attribute provided
...ic.org/images/lohp/[email protected]No alt attribute provided
...dn.kastatic.org/images/lohp/anjali-3.pngNo alt attribute provided
...ges/lohp/math-unicorn-donate-collage.pngNo alt attribute provided
...s-logos/[email protected]Bank of America
...ers-logos/[email protected]College Board
...ogos/[email protected]Ann and John Doerr
...-logos/[email protected]Bill and Melinda Gates Foundation
...logos/[email protected]Fundação Lemann
[email protected]Carlos Rodriguez-Pastor
...rters-logos/[email protected]Tata Trusts
...pporters-logos/[email protected]Valhalla Charitable Foundation
...store/black/en-us?releaseDate=1331424000Download on the App Store
...g/images/store-badges/google-play/en.pngGet it on Google Play
...rg/images/country-flag-icons/us-flag.pngNo alt attribute provided
...images/country-flag-icons/india-flag.pngNo alt attribute provided
...mages/country-flag-icons/mexico-flag.pngNo alt attribute provided
...mages/country-flag-icons/brazil-flag.pngNo alt attribute provided

Page structure

H1 heading
(Critically important)
For every student, every classroom. Real results.
The H1 heading is perfect.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 For every student, every classroom. Real results.
H2 Why Khan Academy works
H2 Differentiate your classroom and engage every student.
H2 You can learn anything.
H2 Every child deserves the chance to learn.
H2 Join Khan Academy today
H2 Key supporters
H2 Site Navigation
H3 Personalized learning
H3 Trusted content
H3 Tools to empower teachers
H3 About
H3 Contact
H3 Download our apps
H3 Courses
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 19 external links on this page.
LinkAttributesAnchor text
/searchSearch
https://www.khanacademy.org/No Text
https://donate.khanacademy.org...New window External Subdomain Donate
https://www.khanacademy.org/loginLog in
/signupSign up
/searchSearch for courses, skills, and videos
/signupLearners
/signup?isteacher=1Teachers
/signup?isparent=1Parents
https://www.khanacademy.org/kidsPre-K through grade 2 (Khan Kids)
/math/early-mathEarly math review
/math/cc-2nd-grade-math2nd grade
/math/cc-third-grade-math3rd grade
/math/cc-fourth-grade-math4th grade
/math/cc-fifth-grade-math5th grade
/math/cc-sixth-grade-math6th grade
/math/cc-seventh-grade-math7th grade
/math/cc-eighth-grade-math8th grade
/math/k-8-gradesSee Pre-K - 8th grade Math
/math/algebraAlgebra 1
/math/geometryGeometry
/math/algebra2Algebra 2
/math/math1Integrated math 1
/math/math2Integrated math 2
/math/math3Integrated math 3
/math/algebra-basicsAlgebra basics
/math/trigonometryTrigonometry
/math/precalculusPrecalculus
/math/probabilityHigh school statistics
/math/statistics-probabilityStatistics & probability
/math/college-algebraCollege algebra
/math/ap-calculus-abAP®︎/College Calculus AB
/math/ap-calculus-bcAP®︎/College Calculus BC
/math/ap-statisticsAP®︎/College Statistics
/math/multivariable-calculusMultivariable calculus
/math/differential-equationsDifferential equations
/math/linear-algebraLinear algebra
https://www.khanacademy.org/mathSee all Math
/math/get-ready-for-3rd-gradeGet ready for 3rd grade
/math/get-ready-for-4th-gradeGet ready for 4th grade
/math/get-ready-for-5th-gradeGet ready for 5th grade
/math/get-ready-for-6th-gradeGet ready for 6th grade
/math/get-ready-for-7th-gradeGet ready for 7th grade
/math/get-ready-for-8th-gradeGet ready for 8th grade
/math/get-ready-for-algebra-iGet ready for Algebra 1
/math/get-ready-for-geometryGet ready for Geometry
/math/get-ready-for-algebra-iiGet ready for Algebra 2
/math/get-ready-for-precalculusGet ready for Precalculus
/math/get-ready-for-ap-calcGet ready for AP® Calculus
/math/get-ready-for-ap-statisticsGet ready for AP® Statistics
https://www.khanacademy.org/kidsUp to 2nd grade (Khan Kids)
/ela/cc-2nd-reading-vocabText duplicate 2nd grade
/ela/cc-3rd-reading-vocabText duplicate 3rd grade
/ela/cc-4th-reading-vocabText duplicate 4th grade
/ela/cc-5th-reading-vocabText duplicate 5th grade
/ela/cc-6th-reading-vocabText duplicate 6th grade
/ela/new-6th-grade-reading-and...6th grade (expanded)
/ela/cc-7th-reading-vocabText duplicate 7th grade
/ela/cc-8th-reading-vocabText duplicate 8th grade
/ela/cc-9th-reading-vocab9th grade
/humanities/grammarGrammar
https://www.khanacademy.org/elaSee all Reading & Language Arts
https://www.khanacademy.org/kidsSocial & emotional learning (Khan Kids)
/college-careers-more/khanmigo...Khanmigo for students
/college-careers-more/ai-for-e...AI for education
/college-careers-more/financia...Financial literacy
/college-careers-more/internet...Internet safety
/college-careers-more/social-m...Social media literacy
/partner-content/learnstorm-gr...Growth mindset
/college-careers-more/college-...College admissions
/college-careers-more/career-c...Careers
/college-careers-more/personal...Personal finance
/college-careers-moreSee all Life Skills
/science/ms-biologyMiddle school biology - NGSS
/science/middle-school-earth-a...Middle school Earth and space science - NGSS
/science/ms-physicsMiddle school physics - NGSS
/science/high-school-biologyHigh school biology
/science/hs-biologyHigh school biology - NGSS
/science/hs-chemistryHigh school chemistry
/science/high-school-physicsHigh school physics
/science/hs-physicsHigh school physics - NGSS
/science/ap-biologyAP®︎/College Biology
/science/ap-chemistry-betaAP®︎/College Chemistry
/science/ap-college-environmen...AP®︎/College Environmental Science
/science/ap-college-physics-1AP®︎/College Physics 1
/science/health-and-medicineHealth and Medicine
/scienceSee all Science
/digital-sat/startDigital SAT
/prep/lsatLSAT
/test-prep/mcatMCAT
/test-prep/oecd-pisaTry the PISA test
/computing/intro-to-python-fun...Intro to CS - Python
/computing/computer-programmingComputer programming
/computing/ap-computer-science...AP®︎/College Computer Science Principles
/computing/pixarPixar in a Box
/computingSee all Computing
/humanities/us-historyUS history
/humanities/ap-us-historyAP®︎/College US History
/humanities/us-government-and-...US government and civics
/humanities/ap-us-government-a...AP®︎/College US Government & Politics
/humanities/whp-originsWorld History Project - Origins to the Present
/humanities/whp-1750World History Project - 1750 to the Present
/humanities/world-history-proj...AP®︎/College World History
/humanities/big-history-projectBig history
/humanities/art-historyArt history
/humanities/ap-art-historyAP®︎/College Art History
/humanities/constitution-101Constitution 101 (pilot)
/humanitiesSee all Arts & Humanities
/economics-finance-domain/macr...Macroeconomics
/economics-finance-domain/ap-m...AP®︎/College Macroeconomics
/economics-finance-domain/micr...Microeconomics
/economics-finance-domain/ap-m...AP®︎/College Microeconomics
/economics-finance-domainSee all Economics
/getty-museumAncient Art
/asian-art-museumAsian Art
/cas-biodiversityBiodiversity
/all-star-orchestraMusic
https://www.khanacademy.org/nasaNASA
https://www.khanacademy.org/amnhNatural History
/museum-of-new-zealand-te-papa...New Zealand - Natural & cultural history
https://www.khanacademy.org/novaNOVA Labs
/wi-phiPhilosophy
/signup?isteacher=1Teachers, start here
/signup?isteacher=1Text duplicate Teachers, start here
/signupLearners, start here
/signupText duplicate Learners, start here
https://donate.khanacademy.org...New window External Subdomain Give them the chance
https://donate.khanacademy.org...New window External Subdomain Text duplicate Give them the chance
/signupText duplicate Learners
/signup?isteacher=1Text duplicate Teachers
/signup?isparent=1Text duplicate Parents
https://donate.khanacademy.org...New window External Subdomain Give today
https://donate.khanacademy.org...New window External Subdomain Text duplicate Donate
/contributevolunteer
https://www.khanacademy.org/aboutAbout
https://blog.khanacademy.org/n...External Subdomain News
https://blog.khanacademy.org/r...New window External Subdomain Impact
/about/the-teamOur team
/about/our-internsOur interns
/about/our-content-specialistsOur content specialists
/about/our-boardOur leadership
/about/our-supportersOur supporters
/contribute/creditsOur contributors
https://khanacademyannualrepor...External Anchor Our finances
/careersText duplicate Careers
/careers/internsInternships
https://khanacademy.zendesk.co...External Subdomain Help center
https://khanacademy.zendesk.co...External Subdomain Support community
/storiesShare your story
https://khanacademy.zendesk.co...External Subdomain Press
/downloadsDownload our apps
https://itunes.apple.com/app/a...External Subdomain IMG-ALT Download on the App Store
https://play.google.com/store/...External Subdomain IMG-ALT Get it on Google Play
https://www.khanacademy.org/Subdomain U.S.
https://india.khanacademy.org/External Subdomain India
https://es.khanacademy.org/External Subdomain Mexico
https://pt.khanacademy.org/External Subdomain Brazil
/about/tosTerms of use
/about/privacy-policyPrivacy Policy
/about/cookie-policyCookie Notice
https://www.facebook.com/khana...External Subdomain No Text
https://twitter.com/khanacademyExternal No Text
https://instagram.com/khanacademyExternal No Text

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.khanacademy.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 is excellent with 0.14 seconds.
The file size of the HTML document is fine (235 kB).

HTTP Response Header

NameValue
content-typetext/html; charset=utf-8
etagW/"30865-gsZTY7DB1zJcOsPua3nPrjet53Q"
x-frame-optionsSAMEORIGIN
x-content-type-optionsnosniff
cache-controlno-store
accept-rangesnone
age168
dateTue, 25 Jun 2024 10:01:01 GMT
varyAccept-Encoding, x-fastly-country, x-ka-has-any-permissions, x-ka-is-e2e, x-ka-is-phantom, x-ka-is-phone, x-ka-is-tablet, x-ka-is-unsupported-browser, x-ka-lang, x-ka-locale, x-ka-locale-status, x-ka-published-content-version, x-ka-region, x-ka-static-version, x-ka-at-post-gateway-proxy-edge
set-cookie113 Characters
x-ka-cached-trace-id6588078f491e859346e567498b73144e/235900426698839119
x-cloud-trace-contextb6758427-1f05-4e59-a382-11478645113c
strict-transport-securitymax-age=31536000; includeSubDomains; preload
content-encodinggzip
statuscode200
http_versionHTTP/2

External factors

Blacklists
(Nice to have)
This website is not classified "for adult only".
This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 65,880 referring domains.
This page has 3,572,617 backlinks.
This page has backlinks from 38,981 different ip addresses.
Facebook popularity
(Somewhat important)
The page has 595376 shares and comments on Facebook.

Robots.txt

User-agent: *
Sitemap: https://www.khanacademy.org/sitemap.xml
Disallow: /_ah/
Disallow: /admin/
Disallow: /api/
Disallow: /crash
Disallow: /devadmin/
Disallow: /embed_video
Disallow: /login?continue=*
Disallow: /postlogin
Disallow: /preview/
Disallow: /search
Disallow: /searchtest
Disallow: /settings/linkaccount
Disallow: /khan-labs?step=terms-and-conditions
Disallow: /khan-labs?step=terms-and-conditions-redirect
Disallow: /khan-labs?step=no-birthdate
Disallow: /khan-labs?step=under-age-gate
Disallow: /khan-labs?step=english-only
Disallow: /khan-labs?step=us-only
Disallow: /khan-labs?step=children-over-limit
Disallow: /khan-labs?step=ineligible
Disallow: /khanmigo/checkout?step=terms-and-conditions
Disallow: /khanmigo/checkout?step=terms-and-conditions-redirect
Disallow: /khanmigo/checkout?step=no-birthdate
Disallow: /khanmigo/checkout?step=under-age-gate
Disallow: /khanmigo/checkout?step=english-only
Disallow: /khanmigo/checkout?step=us-only
Disallow: /khanmigo/checkout?step=children-over-limit
Disallow: /khanmigo/checkout?step=ineligible
Disallow: *?qa_expand_key*

Search preview

www.khanacademy.org
Khan Academy | Free Online Courses, Lessons & Practice
Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.

Most important keywords

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

KeywordResultRecheck
Khan77%Check
Academy77%Check
Khan Academy77%Check
Academy Today60%Check
free58%Check
student56%Check
classroom54%Check
org52%Check
Courses50%Check
Real50%Check

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