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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.
https://www.khanacademy.org/
1 high issue
3.0%
4 medium issues
12.1%
3 low issues
9.1%
25 tests passed
75.8%
0.16 seconds
38.21 kB
52 resources
Secure
Seo
Title
The title tag is perfect.
Khan Academy | Free Online Courses, Lessons & Practice
Meta description
The meta description tag is good.
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.
Headings
The headings are properly set.
  1. For every student,every classroom.Real results.
  1. Why Khan Academy works
  2. Khan Academy boostsstudent learning
  3. “I’m finally able to truly differentiate my classroom. This has been priceless for my students’ engagement.”
  4. You can learn anything.
  5. Every child deserves the chance to learn.
  6. Join Khan Academy today
  7. Key supporters
  8. Supporters of our COVID-19 response
  9. Site Navigation
  1. Personalized learning
  2. Trusted content
  3. Tools to empower teachers
  4. About
  5. Contact
  6. Download our apps
  7. Courses
Content keywords
The content has relevant keywords.
khanacademyfreeonlinecourseslessonspractice
Image keywords
There are 14 images with missing alt attributes.
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  14. https://cdn.kastatic.org/images/country-flag-icons/brazil-flag.png
SEO friendly URL
The URL is SEO friendly.
https://www.khanacademy.org/
404 page
The website has 404 error pages.
https://www.khanacademy.org/404-23460dd5e403dea6cc6396c25f3f2bef
Robots.txt
The webpage can be accessed by search engines.
Noindex
The webpage does not have a noindex tag set.
In-page links
The webpage contains more than 150 links.
  1. Math: Pre-K - 8th grade
  2. Pre-K through grade 2 (Khan Kids)
  3. Early math review
  4. 2nd grade
  5. 3rd grade
  6. 4th grade
  7. 5th grade
  8. 6th grade
  9. 7th grade
  10. 8th grade
  11. See Pre-K - 8th grade Math
  12. Math: Get ready courses
  13. Get ready for 3rd grade
  14. Get ready for 4th grade
  15. Get ready for 5th grade
  16. Get ready for 6th grade
  17. Get ready for 7th grade
  18. Get ready for 8th grade
  19. Get ready for Algebra 1
  20. Get ready for Geometry
  21. Get ready for Algebra 2
  22. Get ready for Precalculus
  23. Get ready for AP® Calculus
  24. Get ready for AP® Statistics
  25. Math: high school & college
  26. Algebra 1
  27. Geometry
  28. Algebra 2
  29. Integrated math 1
  30. Integrated math 2
  31. Integrated math 3
  32. Trigonometry
  33. Precalculus
  34. High school statistics
  35. Statistics & probability
  36. College algebraNEW
  37. AP®︎/College Calculus AB
  38. AP®︎/College Calculus BC
  39. AP®︎/College Statistics
  40. Multivariable calculus
  41. Differential equations
  42. Linear algebra
  43. See all Math
  44. Test prep
  45. SAT
  46. Digital SATNEW
  47. LSAT
  48. Praxis Core
  49. MCAT
  50. Science
  51. Middle school biology - NGSSNEW
  52. Middle school Earth and space science - NGSSNEW
  53. Middle school physics - NGSSNEW
  54. High school biology
  55. High school biology - NGSS
  56. High school physics
  57. High school physics - NGSS
  58. AP®︎/College Biology
  59. AP®︎/College Chemistry
  60. AP®︎/College Environmental Science
  61. AP®︎/College Physics 1
  62. See all Science
  63. Computing
  64. Computer programming
  65. AP®︎/College Computer Science Principles
  66. See all Computing
  67. Arts & humanities
  68. US history
  69. AP®︎/College US History
  70. US government and civics
  71. AP®︎/College US Government & Politics
  72. World History Project - Origins to the Present
  73. World History Project - 1750 to the Present
  74. Art history
  75. AP®︎/College Art History
  76. See all Arts & Humanities
  77. Economics
  78. Macroeconomics
  79. AP®︎/College Macroeconomics
  80. Microeconomics
  81. AP®︎/College Microeconomics
  82. See all Economics
  83. Reading & language arts
  84. Up to 2nd grade (Khan Kids)
  85. 2nd grade
  86. 3rd grade
  87. 4th grade
  88. 5th grade
  89. 6th grade
  90. 7th grade
  91. 8th grade
  92. 9th grade
  93. Grammar
  94. See all Reading & Language Arts
  95. Life skills
  96. Social & emotional learning (Khan Kids)
  97. Careers
  98. Personal finance
  99. Growth mindset
  100. Internet safetyNEW
  101. See all Life Skills
  102. Search
  103. https://www.khanacademy.org/
  104. Login
  105. Sign up
  106. Search for courses, skills, and videos
  107. Learners
  108. Teachers
  109. Parents
  110. Teachers, start here
  111. Teachers, start here
  112. Learners, start here
  113. Learners, start here
  114. Learners
  115. Teachers
  116. Parents
  117. volunteer
  118. About
  119. Impact
  120. Our team
  121. Our interns
  122. Our content specialists
  123. Our leadership
  124. Our supporters
  125. Our contributors
  126. Careers
  127. Internships
  128. Share your story
  129. Math: Pre-K - 8th grade
  130. Math: Get ready courses
  131. Math: high school & college
  132. Test prep
  133. Science
  134. Computing
  135. Arts & humanities
  136. Economics
  137. Reading & language arts
  138. Life skills
  139. English
  140. U.S.
  141. Terms of use
  142. Privacy Policy
  143. Cookie Notice
Language
The webpage has the language declared.
en
Favicon
The webpage has a favicon.
https://cdn.kastatic.org/images/apple-touch-icon-144x144-precomposed.new.png
Performance
Text compression
The HTML file is compressed.
Load time
The webpage loaded in 0.16 seconds.
Page size
The size of the HTML webpage is 38,206.00.
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The webpage makes more than 50.00 HTTP requests.
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Image format
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JavaScript defer
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DOM size
The DOM size is optimal.
The HTML file has 877 DOM nodes.
Security
HTTPS encryption
The webpage uses HTTPS encryption.
The HTML file has https://www.khanacademy.org/ DOM nodes.
Mixed content
There are no mixed content resources on the webpage.
Server signature
The webpage does not have a public server signature.
Unsafe cross-origin links
The webpage does not have unsafe cross-origin links.
Plaintext email
The webpage contains plaintext emails.
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Miscellaneous
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The webpage has structured data.
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      The website has sitemaps.
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      Social
      The webpage has 3 social links.
      Content length
      The webpage has 6,311 words.
      Text to HTML ratio
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      The webpage contains inline CSS code.
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