Nap.nationalacademies.org - SEO Checker

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Overview of the SEO Check
Meta information
95% 
Page quality
83% 
Page structure
29% 
Link structure
38% 
Server
0% 
External factors
100% 
SEO Score
Response time
0.73 s
File size
207.20 kB
Words
1561
Media files
35
Number of links
137 internal / 101 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
The National Academies Press
The length of the page title is perfect. (276 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
The National Academies Press (NAP) publishes authoritative reports issued by The National Academies of Science, Engineering, and Medicine (NASEM).
The length of the meta description is perfect. (947 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://nap.nationalacademies.org/
There is a valid canonical link 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)
This page is hosted on a subdomain. Use a top level domain for better SEO results.
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)
No favicon is linked in the HTML code.

Meta tags

NameValue
viewportwidth=device-width, initial-scale=1.0
descriptionThe National Academies Press (NAP) publishes authoritative reports issued by The National Academies of Science, Engineering, and Medicine (NASEM).
keywordsscience policy research, health, medicine, bookstore, agriculture, medical ethics, behavioral social sciences, biology, economics, chemistry, earth, education, engineering, environment, information technology, math, physics, national security, space, textbooks, public policy
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langen
fb:page_id37495980935
X-UA-CompatibleIE=edge
cache-controlno-cache
charsetUTF-8

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Page quality

Content
(Critically important)
This page contains 1561 words. That's ok.
31.6% of the text are stop words.
Keywords used in the page title are also used in the page content. That's good!
Words from the H1 heading are used in the page content.
The page contains a listing, which indicates a good text layout.
16 paragraphs were found on this page.
The text content is perfect.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 23.94 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
This page loads 12 JavaScript files. This may affect the load time negatively.
A viewport "width=device-width, initial-scale=1.0" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 31 tags for this page.
Image SEO
(Somewhat important)
2 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
...elToken=d2dc71410b56f1d61406108f1738d0f4No alt attribute provided
...elToken=d2dc71410b56f1d61406108f1738d0f4No alt attribute provided
/images/homeslider/emergencyprep-may23.jpgEmergency Preparedness Collection
/images/homeslider/climate-change-10-20.jpgClimate Change Collection
...meslider/quantum-info-sci-collection.jpgQuantum Information Science Collection
/cover/27396/200Cover Image: Social Media and Adolescent Health
/cover/27938/200Cover Image: The Next Decade of Discovery in Solar and Space Physics
/cover/28588/200Cover Image: Preventing and Treating Dementia
/cover/28269/200Cover Image: K-12 STEM Education and Workforce Development in Rural Areas
/cover/27460/200Cover Image: Modernizing Probable Maximum Precipitation Estimation
/cover/27955/200Cover Image: Women's Empowerment, Population Dynamics, and Socioeconomic Development
/cover/29075/200Cover Image: Exploring the Changing Diversity, Equity, and Inclusion Legislation and Policy Landscape and Its Impact on Health and Public Health's Workforce, Education, Training, and Research
/cover/28909/200Cover Image: Identifying Midlife Social Exposures That Might Modify Risks of Cognitive Impairment Associated with Early Life Disadvantage
/cover/27472/200Cover Image: Advancing Vineyard Health
/cover/28857/200Cover Image: Geospatial Data Governance Policies and Procedures
/cover/25663/200Cover Image: Social Isolation and Loneliness in Older Adults
/cover/25585/200Cover Image: Promising Practices for Addressing the Underrepresentation of Women in Science, Engineering, and Medicine
/cover/25682/200Cover Image: Leading Health Indicators 2030
/cover/13165/200Cover Image: A Framework for K-12 Science Education
/cover/12956/200Cover Image: The Future of Nursing
/cover/26967/200Cover Image: Report of the Materials Advisory Board Ad Hoc Panel on the Manufacture of Advanced Electronic Components.
/cover/21172/200Cover Image: A Survey of Transplantable and Transmissible Animal Tumors
/cover/29013/200Cover Image: Resident Research Associateships
/cover/19441/200Cover Image: Research Concerning Metrology and Fundamental Constants
/cover/28382/200Cover Image: Polychlorinated biphenyls
/images/video_thumbs/mm-18358.jpgVideo: Confronting Commercial Sexual Exploitation and Sex Trafficking of Minors in the United States
/images/video_thumbs/mm-18373.jpgVideo: Abrupt Impacts of Climate Change
/images/video_thumbs/mm-12192.jpgVideo: On Being a Scientist
/images/video_thumbs/mm-immigrants-vis.pngInfographic: Ten Things You Probably Didn't Know About Immigrants
/images/video_thumbs/mm-23482.jpgVideo: Bullying: Through a Teacher's Eyes
/images/icon_academyscope.pngBrowse titles in AcademyScope
/images/footer-nap-text.pngNational Academies Press: Washington, DC | Home
data:[...] Base64NAS Logo
data:[...] Base64NAE Logo
data:[...] Base64NAM Logo

Page structure

H1 heading
(Critically important)
National Academies Press
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.
There are 47 headings on the page. The amount of headings should be in a more proper relation to the amount of text.

Heading structure

Heading levelContent
H1 National Academies Press
H1 Emergency Preparedness Collection
H1 Climate Change Collection
H1 Quantum Information Science Collection
H2 Featured Titles
H2 New Releases more
H2 Most Downloaded (last 7 days) more
H2 From the Archives
H2 Searchable Collections more
H2 Featured Multimedia
H3 ×BROWSE BY TOPIC
H4 Social Media and Adolescent Health
H4 The Next Decade of Discovery in Solar and Space Physics: Exploring and Safeguarding Humanity's Home in Space
H4 Preventing and Treating Dementia: Research Priorities to Accelerate Progress
H4 K-12 STEM Education and Workforce Development in Rural Areas
H4 Modernizing Probable Maximum Precipitation Estimation
H4 Women's Empowerment, Population Dynamics, and Socioeconomic Development
H4 Exploring the Changing Diversity, Equity, and Inclusion Legislation and Policy Landscape and Its Impact on Health and Public Health's Workforce, Education, Training, and Research: Proceedings of a ...
H4 Identifying Midlife Social Exposures That Might Modify Risks of Cognitive Impairment Associated with Early Life Disadvantage: Proceedings of a Workshop
H4 Advancing Vineyard Health: Insights and Innovations for Combating Grapevine Red Blotch and Leafroll Diseases
H4 Geospatial Data Governance Policies and Procedures: A Guide
H4 Social Isolation and Loneliness in Older Adults: Opportunities for the Health Care System
H4 Promising Practices for Addressing the Underrepresentation of Women in Science, Engineering, and Medicine: Opening Doors
H4 Leading Health Indicators 2030: Advancing Health, Equity, and Well-Being
H4 A Framework for K-12 Science Education: Practices, Crosscutting Concepts, and Core Ideas
H4 The Future of Nursing: Leading Change, Advancing Health
H4 Report of the Materials Advisory Board Ad Hoc Panel on the Manufacture of Advanced Electronic Components.
H4 A Survey of Transplantable and Transmissible Animal Tumors
H4 Resident Research Associateships: Postdoctoral and Senior Research Awards
H4 Research Concerning Metrology and Fundamental Constants
H4 Polychlorinated biphenyls: a case study by Edward J. Burger
H4 Crisis Standards of Care
H4 Cybersecurity
H4 Emergency Preparedness / Disaster Management
H4 Genomics
H4 Climate Change
H6 Video
H6 Video Duplicate text
H6 Video Duplicate text
H6 Infographic
H6 Video Duplicate text
H6 NAP Quick Links
H6 Request A
H6 Browse Publications
H6 NAP Ordering
H6 Using NAP.edu
H6 NAP Information
Some internal link anchor texts are too long.
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.
There are 3 links with a trivial anchor text.
The number of internal links is ok.
There are too many external links (101) on this page.

Found links on this page

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/login.php?action=newRegister
/content/helpHELP
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https://www.nationalacademies....External Subdomain Text duplicate About Us
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https://www.nationalacademies....External Subdomain Text duplicate Leadership
https://www.nationalacademies....External Subdomain Text duplicate Newsroom
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https://www.nationalacademies....External Subdomain Publications
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https://www.nationalacademies....External Subdomain Text duplicate Learn More
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https://www.nationalacademies....External Subdomain Topics
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https://www.nationalacademies....External Subdomain Opportunities
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A-TITLE Learn More
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/collection/34/climate-changeSubdomain Text duplicate View all titles
http://www.nap.edu/catalog.php...External Subdomain Anchor IMG-ALT Video: Confronting Commercial Sexual Exploitation and Sex Trafficking of Minors in the United States
http://www.nap.edu/catalog.php...External Subdomain Anchor Confronting Commercial Sexual Exploitation and Sex Trafficking of Minors in the United States
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/content/about-the-national-ac...About
https://notes.nap.edu/External Subdomain Notes from NAP
/content/request-desk-copiesDesk Copy
/content/request/exam_copy.htmlExam Copy
/content/request-review-copiesReview Copy
/content/request-rights-and-pe...Reprint Permission
/authorBy Division
/new/By New Releases
/collectionBy Searchable Collections
/topicBy Topic
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/content/searching-nap-publica...Tips for Searching
/content/using-mynapHelp With MyNAP
/content/about-pdfsDownloading and Reading PDFs
/content/help-with-discountsDiscounts
/content/information-for-book-...Book Trade Customers
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/content/international-orderin...International Ordering and Distribution
/content/translation-rightsTranslation Rights
https://www.nationalacademies....External Subdomain No Text
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IMG-ALT NAS Logo
https://www.nae.edu/New window External Subdomain Text duplicate National Academy of Engineering
IMG-ALT NAE Logo
https://nam.edu/New window External Text duplicate National Academy of Medicine
IMG-ALT NAM Logo
https://www.nationalacademies....External Subdomain Text duplicate About Us
https://www.nationalacademies....External Subdomain Text duplicate Our Work
https://www.nationalacademies....External Subdomain Text duplicate Events
https://www.nationalacademies....External Subdomain Contact Us
https://www.nationalacademies....External Subdomain Text duplicate Opportunities
https://www.nationalacademies....External Subdomain Text duplicate Publications
https://www.nationalacademies....External Subdomain Visit
https://www.nationalacademies....External Subdomain Current Operating Status
https://www.nationalacademies....External Subdomain E-Newsletters
https://www.facebook.com/Natio...External Subdomain No Text
https://twitter.com/TheNASEMExternal No Text
https://www.linkedin.com/compa...External Subdomain No Text
http://www.nationalacademies.o...External Subdomain A-TITLE Share our site
https://www.nationalacademies....External Subdomain A-TITLE Subscribe
https://www8.nationalacademies...External Subdomain Donate Today
https://www.nationalacademies....External Subdomain Privacy Statement
https://www.nationalacademies....External Subdomain DMCA Policy
https://www.nationalacademies....External Subdomain Terms of Use
https://www.nationalacademies....External Subdomain Site Map
https://www.nationalacademies....External Subdomain Copyright © National Academy of Sciences. All Rights Reserved.

Server configuration

HTTP redirects
(Critically important)
The checked page does not redirect to another URL.
HTTP header
(Important)
The HTML page should be transferred using GZip compression.
No X-Powered HTTP header is sent.
Performance
(Somewhat important)
The page response time of 0.73 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.
This page loads 7 CSS files. This may affect the page load time negatively.
This page loads 12 JavaScript files. This may affect the load time negatively.
The file size of the HTML document is fine (207 kB).

HTTP Response Header

NameValue
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External factors

This website has excellent links from other websites.
This page has backlinks from 4,148 referring domains.
This page has 639,063 backlinks.
This page has backlinks from 2,631 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

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User-agent: Googlebot 
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nap.nationalacademies.org
The National Academies Press
The National Academies Press (NAP) publishes authoritative reports issued by The National Academies of Science, Engineering, and Medicine (NASEM).

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