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Centers for Disease Control and Prevention
CDC is the nation’s leading science-based, data-driven, service organization that protects the public’s health. For more than 70 years, we’ve put science into action to help children stay healthy so they can grow and learn; to help families, businesses, and communities fight disease and stay strong; and to protect the public’s health.
https://www.cdc.gov/
2 high issues
6.1%
3 medium issues
9.1%
3 low issues
9.1%
25 tests passed
75.8%
0.09 seconds
70.56 kB
27 resources
Secure
Seo
Title
The title tag is perfect.
Centers for Disease Control and Prevention
Meta description
The meta description tag is good.
CDC is the nation’s leading science-based, data-driven, service organization that protects the public’s health. For more than 70 years, we’ve put science into action to help children stay healthy so they can grow and learn; to help families, businesses, and communities fight disease and stay strong; and to protect the public’s health.
Headings
The h1 tag is the same with the title tag.
  1. Centers for Disease Control and Prevention
  1. CDC 24/7: Saving Lives, Protecting People
  1. Monkeypox
  1. Exit Notification / Disclaimer Policy
  1. CDC.gov Privacy Settings
  2. Confirmed!
Content keywords
The content has relevant keywords.
centersfordiseasecontrolandprevention
Image keywords
All images have alt attributes set.
SEO friendly URL
The URL does not contain any relevant keywords.
https://www.cdc.gov/
404 page
The website has 404 error pages.
https://www.cdc.gov/404-677b039d129451f91964e48b917b59f6
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. Español
  2. Centers for Disease Control and Prevention. CDC twenty four seven. Saving Lives, Protecting People
  3. A-Z Index
  4. Health Topics
  5. Outbreaks
  6. Data & Stats
  7. Publications
  8. About CDC
  9. CDC.GOV HOME
  10. CDC Home
  11. Working 24/7 to save lives–protect people
  12. FEATURED
  13. Learn more
  14. Health Topics A-Z
  15. Injury, Violence, & Safety
  16. Workplace Safety & Health
  17. Environmental Health
  18. Health Topics A-Z
  19. Injury, Violence and Safety
  20. Environmental Health
  21. Workplace Safety and Health
  22. View all Outbreaks
  23. Brie and Camembert Cheese Listeria Infections
  24. Ground Beef E. coli Infections
  25. Small Turtles Salmonella infections
  26. Backyard PoultrySalmonella Infections
  27. View all News
  28. CDC Director Tests Positive For COVID-19
  29. ACIP Immunization Schedule Vote
  30. CDC Allows Novavax Monovalent COVID-19 Boosters for Adults Ages 18 and Older
  31. Inequities Found in Flu Vaccine Uptake
  32. CDC ResponseLearn how CDC is responding to COVID-19 pandemic.
  33. Training & EducationLocate quality trainings and continuing education.
  34. STEM at CDCScience, technology, engineering, & math disciplines.
  35. CFAAnticipating new outbreaks with modern data science tools.
  36. CDC ResponseLearn how CDC is responding to COVID-19 pandemic.
  37. Training & EducationLocate quality trainings and continuing education.
  38. STEM at CDCScience, technology, engineering, & math disciplines.
  39. CFAAnticipating new outbreaks with modern data science tools.
  40. COVID-19Learn about updated COVID-19 vaccines for children.
  41. Protect Against FluA flu vaccine protects you, your loved ones, and your community.
  42. RSV PreventionLearn about the symptoms and treatment of respiratory syncytial virus (RSV).
  43. Healthy and Safe SwimmingPrevent germs from spreading when you swim in hot tubs and indoor pools.
  44. Advancing the Integrity of CDC Science
  45. Morbidity and Mortality Weekly Report
  46. Emerging Infectious Diseases
  47. Preventing Chronic Disease
  48. Vital Signs Report
  49. Lab Safety
  50. Data & Stats
  51. MORBIDITY AND MORTALITY WEEKLY REPORT (MMWR) EARLY RELEASE: A Health Equity Approach for Implementation of JYNNEOS Vaccination at Large, Communit...
  52. View all Publications
  53. About CDC
  54. Organization & Mission
  55. Budget & Funding
  56. Fellowships & Internships
  57. Training & Education
  58. Diversity
  59. CDC Museum
  60. CDC Library
  61. https://www.cdc.gov/about/leadership/directors-page.html
  62. CDC DIRECTOR Rochelle P. Walensky, MD, MPH
  63. https://www.cdc.gov/about/leadership/directors-page.html
  64. CDC DIRECTOR Rochelle P. Walensky MD, MPH
  65. Centers for Disease Control and Prevention
  66. CDC Home
  67. Diseases & Conditions
  68. Healthy Living
  69. Injury, Violence & Safety
  70. Environmental Health
  71. Workplace Safety & Health
  72. Global Health
  73. State, Tribal, Local & Territorial
  74. Data & Statistics
  75. Vital Signs
  76. Feature Archive
  77. Tools & Resources
  78. Disease of the Week
  79. Publications
  80. Mobile apps
  81. CDC – TV
  82. About CDC
  83. Contact Us
  84. Contact Us
  85. Email Us
  86. About CDC
  87. Funding
  88. Accessibility
  89. External Links
  90. Privacy
  91. Policies
  92. No Fear Act
  93. FOIA
  94. Nondiscrimination
  95. Español
  96. 繁體中文
  97. Tiếng Việt
  98. 한국어
  99. Tagalog
  100. Русский
  101. العربية
  102. Kreyòl Ayisyen
  103. Français
  104. Polski
  105. Português
  106. Italiano
  107. Deutsch
  108. 日本語
  109. فارسی
  110. English
  111. Español
  112. 繁體中文
  113. Tiếng Việt
  114. 한국어
  115. Tagalog
  116. Русский
  117. العربية
  118. Kreyòl Ayisyen
  119. Français
  120. Polski
  121. Português
  122. Italiano
  123. Deutsch
  124. 日本語
  125. فارسی
  126. English
  127. Accessibility
  128. External Links
  129. Privacy
  130. Policies
  131. No Fear Act
  132. FOIA
  133. Nondiscrimination
  134. Website Disclaimers
Language
The webpage has the language declared.
en-us
Favicon
The webpage has a favicon.
https://www.cdc.gov/TemplatePackage/4.0/assets/imgs/apple-touch-icon-180x180.png
Performance
Text compression
The HTML file is compressed.
Load time
The webpage loaded in 0.09 seconds.
Page size
The size of the HTML webpage is 70,558.00.
HTTP requests
There are fewer than 27 HTTP requests on the webpage.
  1. https://www.cdc.gov/JScript/foresee-variables.js
  2. https://www.cdc.gov/JScript/metrics/topic_levels.js?_=74031
  3. https://www.cdc.gov/JScript/metrics/adobe/launch/b36c1852e229/2c674008a127/launch-04da70ea688d.min.js
  4. https://www.cdc.gov/config/cdc_config.js
  5. https://www.cdc.gov/TemplatePackage/contrib/libs/jquery/latest/jquery.min.js?_=74031
  6. https://www.cdc.gov/TemplatePackage/contrib/libs/bootstrap/latest/js/bootstrap.bundle.min.js?_=74031
  7. https://www.cdc.gov/TemplatePackage/contrib/libs/cdc/ab/4.0.0/ab.js
  8. https://www.cdc.gov/TemplatePackage/4.0/assets/js/app.min.js?_=74031
  1. https://www.cdc.gov/TemplatePackage/contrib/libs/bootstrap/latest/css/bootstrap.min.css?_=74031
  2. https://www.cdc.gov/TemplatePackage/4.0/assets/css/app.min.css?_=74031
  3. https://www.cdc.gov/TemplatePackage/4.0/assets/css/print.min.css?_=74031
  4. https://www.cdc.gov/homepage/hp.css?v=1649
  1. https://www.cdc.gov/homepage/images/cards/monkey-pox-720x400px.jpg?_=32410
  2. https://www.cdc.gov/homepage/images/cdc-in-action/sanchez-ppe-647x381px.jpg?_=58322
  3. https://www.cdc.gov/homepage/images/cdc-in-action/lab-education-cdcinaction.jpg?_=36455
  4. https://www.cdc.gov/homepage/images/cdc-in-action/stem-action.jpg?_=71406
  5. https://www.cdc.gov/homepage/images/cdc-in-action/CFA-CDC-in-action.jpg?_=48360
  6. https://www.cdc.gov/homepage/images/cdc-in-action/sanchez-ppe-647x381px.jpg?_=58322
  7. https://www.cdc.gov/homepage/images/cdc-in-action/lab-education-cdcinaction.jpg?_=36455
  8. https://www.cdc.gov/homepage/images/cdc-in-action/stem-action.jpg?_=71406
  9. https://www.cdc.gov/homepage/images/cdc-in-action/CFA-CDC-in-action.jpg?_=48360
  10. https://www.cdc.gov/homepage/images/cards/covd-19-boosters-720x400px.jpg?_=19391
  11. https://www.cdc.gov/homepage/images/cards/flu-vaccine-720x400px_3.jpg?_=16110
  12. https://www.cdc.gov/homepage/images/cards/rsv-720x400px.jpg?_=16294
  13. https://www.cdc.gov/homepage/images/cards/Healthy-Safe-Swimming-720x400px.jpg?_=89924
  14. https://www.cdc.gov/homepage/images/u37.png?_=62842
  15. https://www.cdc.gov/homepage/images/u37.png?_=62842
Image format
There are 15 images that are not using the AVIF, WebP format.
  1. https://www.cdc.gov/homepage/images/cards/monkey-pox-720x400px.jpg?_=32410
  2. https://www.cdc.gov/homepage/images/cdc-in-action/sanchez-ppe-647x381px.jpg?_=58322
  3. https://www.cdc.gov/homepage/images/cdc-in-action/lab-education-cdcinaction.jpg?_=36455
  4. https://www.cdc.gov/homepage/images/cdc-in-action/stem-action.jpg?_=71406
  5. https://www.cdc.gov/homepage/images/cdc-in-action/CFA-CDC-in-action.jpg?_=48360
  6. https://www.cdc.gov/homepage/images/cdc-in-action/sanchez-ppe-647x381px.jpg?_=58322
  7. https://www.cdc.gov/homepage/images/cdc-in-action/lab-education-cdcinaction.jpg?_=36455
  8. https://www.cdc.gov/homepage/images/cdc-in-action/stem-action.jpg?_=71406
  9. https://www.cdc.gov/homepage/images/cdc-in-action/CFA-CDC-in-action.jpg?_=48360
  10. https://www.cdc.gov/homepage/images/cards/covd-19-boosters-720x400px.jpg?_=19391
  11. https://www.cdc.gov/homepage/images/cards/flu-vaccine-720x400px_3.jpg?_=16110
  12. https://www.cdc.gov/homepage/images/cards/rsv-720x400px.jpg?_=16294
  13. https://www.cdc.gov/homepage/images/cards/Healthy-Safe-Swimming-720x400px.jpg?_=89924
  14. https://www.cdc.gov/homepage/images/u37.png?_=62842
  15. https://www.cdc.gov/homepage/images/u37.png?_=62842
JavaScript defer
The are 8 javascript resources without the defer attribute.
  1. https://www.cdc.gov/JScript/foresee-variables.js
  2. https://www.cdc.gov/JScript/metrics/topic_levels.js?_=74031
  3. https://www.cdc.gov/JScript/metrics/adobe/launch/b36c1852e229/2c674008a127/launch-04da70ea688d.min.js
  4. https://www.cdc.gov/config/cdc_config.js
  5. https://www.cdc.gov/TemplatePackage/contrib/libs/jquery/latest/jquery.min.js?_=74031
  6. https://www.cdc.gov/TemplatePackage/contrib/libs/bootstrap/latest/js/bootstrap.bundle.min.js?_=74031
  7. https://www.cdc.gov/TemplatePackage/contrib/libs/cdc/ab/4.0.0/ab.js
  8. https://www.cdc.gov/TemplatePackage/4.0/assets/js/app.min.js?_=74031
DOM size
The DOM size is optimal.
The HTML file has 1245 DOM nodes.
Security
HTTPS encryption
The webpage uses HTTPS encryption.
The HTML file has https://www.cdc.gov/ DOM nodes.
Mixed content
There are no mixed content resources on the webpage.
Server signature
The webpage has a public server signature.
Microsoft-IIS/10.0
Unsafe cross-origin links
The webpage does not have unsafe cross-origin links.
Plaintext email
The webpage does not contain any plaintext emails.
Miscellaneous
Structured data
The webpage has structured data.
      Meta viewport
      The webpage has a meta viewport tag set.
      width=device-width, initial-scale=1, shrink-to-fit=no
      Character set
      The webpage has a charset value set.
      utf-8
      Sitemap
      The website has sitemaps.
      1. https://www.cdc.gov/niosh/sitemaps/sitemapsNIOSH.xml
      2. https://www.cdc.gov/grand-rounds/sitemap.xml
      3. https://www.cdc.gov/injury/injury-oc-sitemap.xml
      4. https://www.cdc.gov/violenceprevention/NCIPC-ViolencePrevention-SiteMap.xml
      5. https://www.cdc.gov/traumaticbraininjury/NCIPC-TraumaticBrainInjury-SiteMap.xml
      6. https://www.cdc.gov/steadi/NCIPC-STEADI-SiteMap.xml
      7. https://www.cdc.gov/safechild/NCIPC-SafeChild-SiteMap.xml
      8. https://www.cdc.gov/rxawareness/NCIPC-RXawareness-SiteMap.xml
      9. https://www.cdc.gov/parentsarethekey/NCIPC-ParentsAreTheKey-SiteMap.xml
      10. https://www.cdc.gov/parents/essentials/NCIPC-Essentials-SiteMap.xml
      11. https://www.cdc.gov/opioids/NCIPC-OpioidsPortal-SiteMap.xml
      12. https://www.cdc.gov/motorvehiclesafety/NCIPC-MotorVehicleSafety-SiteMap.xml
      13. https://www.cdc.gov/homeandrecreationalsafety/NCIPC-HomeandRec-SiteMap.xml
      14. https://www.cdc.gov/drugoverdose/NCIPC-DrugOverdose-SiteMap.xml
      15. https://www.cdc.gov/coronavirus/sitemap.xml
      16. https://www.cdc.gov/wcms-auto-sitemap-index.xml
      Social
      The webpage has 10 social links.
      Content length
      The webpage has 1,612 words.
      Text to HTML ratio
      The text to HTML ratio is under 10%
      The text to HTML ratio is 6%.
      Inline CSS
      The webpage contains inline CSS code.
      1. fill:rgb(4,45,74);fill-rule:nonzero;stroke:rgb(4,45,74);stroke-width:1.19px;
      2. flex-grow: 1;
      3. flex-grow: 1;
      4. stop-color:#FFDD55
      5. stop-color:#FFDD55
      6. stop-color:#FF543E
      7. stop-color:#C837AB
      8. fill:url(#svg_ig_1);
      9. stop-color:#3771C8
      10. stop-color:#3771C8
      11. stop-color:#6600FF;stop-opacity:0
      12. fill:url(#svg_ig_2);
      13. opacity: 0.2;
      14. opacity: 0.3;
      15. fill:url(#linear-gradient);
      16. fill:url(#svg_ig_1);
      17. fill:url(#svg_ig_2);
      18. fill:url(#svg_ig_1);
      19. fill:url(#svg_ig_2);
      Deprecated HTML
      There are no deprecated HTML tags on the webpage.