Thensf.org - SEO Checker

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Overview of the SEO Check
Meta information
100% 
Page quality
77% 
Page structure
89% 
Link structure
25% 
Server
78% 
External factors
100% 
SEO Score
Response time
1.04 s
File size
261.50 kB
Words
1105
Media files
68
Number of links
122 internal / 13 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
National Sleep Foundation
The length of the page title is perfect. (237 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
The National Sleep Foundation (NSF) is dedicated to improving public health and well-being through sleep education and advocacy.
The length of the meta description is perfect. (809 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.thensf.org/
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en-us
Server location: United States of America
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=1.0,user-scalable=no
descriptionThe National Sleep Foundation (NSF) is dedicated to improving public health and well-being through sleep education and advocacy.
robotsindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1
generatorPowered by WPBakery Page Builder - drag and drop page builder for WordPress.
msapplication-TileImagehttps://www.thensf.org/wp-content/uploads/2019/11/cropped-NSF.org-Favicon-270x270.png
article:modified_time2026-08-19T17:56:11+00:00
langen-us
twitter:cardsummary_large_image
og:localeen_US
og:typewebsite
og:titleNational Sleep Foundation
og:descriptionThe National Sleep Foundation (NSF) is dedicated to improving public health and well-being through sleep education and advocacy.
og:urlhttps://www.thensf.org/
og:site_nameNational Sleep Foundation
og:imagehttps://www.thensf.org/wp-content/uploads/2024/10/NSF-stacked-blue-text.png
og:image:width5729
og:image:height3393
og:image:typeimage/png
charsetUTF-8

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Page quality

Content
(Critically important)
Words from the H1 heading are not used in the page content.
This page contains 1105 words. That's ok.
31.3% of the text are stop words.
Keywords used in the page title are also used in the page content. That's good!
The page contains a listing, which indicates a good text layout.
13 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 22.29 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,user-scalable=no" 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 22 tags for this page.
Image SEO
(Somewhat important)
58 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
...nt/themes/wavlowvol/img/logovertical.svgThe National Sleep Foundation
...nt/uploads/2022/08/[email protected]No alt attribute provided
...nt/uploads/2022/08/[email protected]No alt attribute provided
...nt/uploads/2022/08/[email protected]No alt attribute provided
...nt/uploads/2022/08/[email protected]No alt attribute provided
...nt/uploads/2022/08/[email protected]No alt attribute provided
...nt/uploads/2022/08/[email protected]No alt attribute provided
...nt/uploads/2022/08/[email protected]No alt attribute provided
...nt/uploads/2022/08/[email protected]No alt attribute provided
...nt/uploads/2022/08/[email protected]No alt attribute provided
...nt/uploads/2022/08/[email protected]No alt attribute provided
...nt/uploads/2022/08/[email protected]No alt attribute provided
...nt/uploads/2022/08/[email protected]No alt attribute provided
...emes/wavlowvol/img/NSF-research-icon.svgNo alt attribute provided
...es/wavlowvol/img/NSF-guidelines-icon.svgNo alt attribute provided
...vlowvol/img/NSF-sleep-education-icon.svgNo alt attribute provided
...emes/wavlowvol/img/arrow_right-white.svgNo alt attribute provided
...mes/wavlowvol/img/arrow_right_24px-3.svgNo alt attribute provided
...ds/2026/09/NSF-DDPW_Forum-Graphic_03.pngDrowsy Driving Prevention Week
...emes/wavlowvol/img/arrow_right-white.svgNo alt attribute provided
...mes/wavlowvol/img/arrow_right_24px-3.svgNo alt attribute provided
...2/08/[email protected]No alt attribute provided
...2/08/[email protected]No alt attribute provided
...22/08/[email protected]No alt attribute provided
...2/08/[email protected]No alt attribute provided
...2022/08/[email protected]No alt attribute provided
...2/08/[email protected]No alt attribute provided
...oads/2022/08/[email protected]No alt attribute provided
...2/08/[email protected]No alt attribute provided
...2/08/[email protected]No alt attribute provided
...22/08/[email protected]No alt attribute provided
...es/wavlowvol/img/BSS-logo-registered.svgNo alt attribute provided
...content/themes/wavlowvol/img/Bracket.svgNo alt attribute provided
...nt/themes/wavlowvol/img/[email protected]Best Slept Self Cycle
.../2022/08/[email protected]No alt attribute provided
...s/2022/08/[email protected]No alt attribute provided
...s/2022/08/[email protected]No alt attribute provided
...s/2022/08/[email protected]No alt attribute provided
...ads/2022/08/[email protected]No alt attribute provided
...022/09/SAW-Logo-Vertical-Color-wider.pngNo alt attribute provided
...DDPW22-logo-tagline-Full-color-wider.pngNo alt attribute provided
...s/2022/08/[email protected]No alt attribute provided
.../2022/08/[email protected]No alt attribute provided
.../2022/08/[email protected]No alt attribute provided
...NSF-MediaCenter-FeatImg_Solid-Orange.jpgNSF-MediaCenter-FeatImg_Solid-Orange
...F-MediaCenter-FeatImg_Gradient-Light.jpgNo alt attribute provided
...025/11/Mark-Rosekind-headshot-scaled.jpgNo alt attribute provided
...diaCenter-FeatImg_Photo-Sheets-White.jpgSquare image of white bedding with the NSF logo overlayed
...F-MediaCenter-FeatImg_Gradient-Light.jpgNo alt attribute provided
...diaCenter-FeatImg_Photo-Sheets-White.jpgSquare image of white bedding with the NSF logo overlayed
...12/Sheldon-Stephen-Sleep-Medicine-2.jpegA photo of Stephen Sheldon
...diaCenter-FeatImg_Photo-Sheets-White.jpgSquare image of white bedding with the NSF logo overlayed
...diaCenter-FeatImg_Photo-Stretch-Navy.jpgNo alt attribute provided
...F-MediaCenter-FeatImg_Gradient-Light.jpgNo alt attribute provided
.../2022/08/[email protected]No alt attribute provided
...3/NSF-MediaCenter-FeatImg_Solid-Navy.jpgNo alt attribute provided
...t/uploads/2025/09/Timothy-Roehrs-PhD.jpgNo alt attribute provided
...leep-Starts-the-Moment-You-Wake-Up-1.pngNo alt attribute provided
...p-Starts-Before-You-Hit-the-Sheets-1.pngNo alt attribute provided
...-Sleep-by-Eating-Right-on-Schedule-1.pngNo alt attribute provided
...emes/wavlowvol/img/arrow_right-white.svgNo alt attribute provided
...mes/wavlowvol/img/arrow_right_24px-3.svgNo alt attribute provided
...nt/themes/wavlowvol/img/logovertical.svgNo alt attribute provided
...mark_Noto-Sans_Black-200x100_600x300.pngNo alt attribute provided
...emes/wavlowvol/img/arrow_right-white.svgNo alt attribute provided
...mes/wavlowvol/img/arrow_right_24px-3.svgNo alt attribute provided
...25/01/NSF-35th-Seal_Footer_1200x1200.pngThe 35th Anniversary Seal of National Sleep Foundation
.../2025/09/32px-Bluesky_Logo_White.svg.pngBluesky

Page structure

H1 heading
(Critically important)
A renewed you after taking small steps each day and night that make a big difference in your sleep health.
The H1 heading is perfect.
Headings
(Important)
There are 30 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 A renewed you after taking small steps each day and night that make a big difference in your sleep health.
H2 Drowsy Driving Forum
H2 Tap into our sleep health content
H3 Explore our blog
H4 National Sleep Foundation is an independent nonprofit, dedicated to improving health and well-being by advancing sleep health.
H4 As the leading authority in sleep health, our promise to the public is to help anyone and everyone be their Best Slept Self ®.
H4 Advancing Sleep Health to Reduce Impaired Driving
H4 Practice these six small steps for healthy sleep.
H4 Daytime
H4 Nighttime
H4 Explore how we can help you improve your sleep health and your overall well-being. We’ve gathered our resources here to help you get started.
H5 Research
H5 Guidelines
H5 Education and Advocacy
H5 1. Light
H5 2. Exercise
H5 3. Mealtimes
H5 4. Avoid…
H5 5. Wind-down
H5 6. Environment
H5 A Healthy Night’s Sleep Starts the Moment You Wake Up
H5 Healthy Sleep Starts Before You Hit the Sheets
H5 Get Healthy Sleep by Eating Right on Schedule
H6 Who we are
H6 What we do
H6 National Sleep Foundation's
H6 What is your best slept self?
H6 DISCOVER OUR PROGRAMS AND INITIATIVES
H6 Sleep Health Topics
H6 Follow us for more
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.
21 links don't have an anchor text.
The number of internal links is ok.
None of the anchor texts is too long.
There are 13 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://events.thensf.org/Nati...New window External Subdomain Anchor Register Now
https://www.thensf.org/IMG-ALT The National Sleep Foundation
https://www.thensf.org/issues/Issues
/national-sleep-advocacy-round...National Sleep Advocacy Roundtable
/about-sleeptech/About SleepTech®
/nsf-cta-ansi-standards/NSF / CTA / ANSI Standards
/sleeptech-network/SleepTech® Network
/sleeptech-award/SleepTech® Award
/sleep-health-index/Sleep Health Index®
/sleep-satisfaction-tool/Sleep Satisfaction Tool®
/sleep-in-america-polls/Sleep in America® Polls
/guidelines/Guidelines
/two-views-sleep-report/Two Views of the Night Report
/sleepapneasurvey/Understanding Sleep Apnea
/sleep-health-during-a-preside...Sleep Health During a Presidential Election
/sleep-health-and-the-covid-19...Sleep Health and the COVID-19 Pandemic
/sleep-health-journal/Sleep Health: Journal of the National Sleep Foundation®️
/sleep-awareness-week/Sleep Awareness Week®
/drowsy-driving-prevention/Drowsy Driving Prevention Week®
https://www.thensf.org/sleepmark/SleepMark™
/foundations-of-sleep-health/Foundations of Sleep Health™
/education-for-health-care-pro...Education for Health Care Professionals
/employee-wellness/Reshaping Employee Wellness
/sleep-health-topics/Sleep Health Topics
/mission-and-goals/Mission and Goals
/boards-and-committees/Boards and Committees
/about/key-activities/Key Activities
/a-national-sleep-foundation-s...Statement on Equality and the Need for Change
/about/lifetime-achievement-aw...Lifetime Achievement Award
/media-center/Media Center
/sponsorship-opportunities/Sponsorship Opportunities
https://www.thensf.org/issues/Text duplicate Issues
/national-sleep-advocacy-round...Text duplicate National Sleep Advocacy Roundtable
/about-sleeptech/Text duplicate About SleepTech®
/nsf-cta-ansi-standards/Text duplicate NSF / CTA / ANSI Standards
/sleeptech-network/Text duplicate SleepTech® Network
/sleeptech-award/Text duplicate SleepTech® Award
/sleep-health-index/Text duplicate Sleep Health Index®
/sleep-satisfaction-tool/Text duplicate Sleep Satisfaction Tool®
/sleep-in-america-polls/Text duplicate Sleep in America® Polls
/guidelines/Text duplicate Guidelines
/two-views-sleep-report/Text duplicate Two Views of the Night Report
/sleepapneasurvey/Text duplicate Understanding Sleep Apnea
/sleep-health-during-a-preside...Text duplicate Sleep Health During a Presidential Election
/sleep-health-and-the-covid-19...Text duplicate Sleep Health and the COVID-19 Pandemic
/sleep-health-journal/Text duplicate Sleep Health: Journal of the National Sleep Foundation®️
/sleep-awareness-week/Text duplicate Sleep Awareness Week®
/drowsy-driving-prevention/Text duplicate Drowsy Driving Prevention Week®
https://www.thensf.org/sleepmark/Text duplicate SleepMark™
/foundations-of-sleep-health/Text duplicate Foundations of Sleep Health™
/education-for-health-care-pro...Text duplicate Education for Health Care Professionals
/employee-wellness/Text duplicate Reshaping Employee Wellness
/sleep-health-topics/Text duplicate Sleep Health Topics
/mission-and-goals/Text duplicate Mission and Goals
/boards-and-committees/Text duplicate Boards and Committees
/about/key-activities/Text duplicate Key Activities
/a-national-sleep-foundation-s...Text duplicate Statement on Equality and the Need for Change
/about/lifetime-achievement-aw...Text duplicate Lifetime Achievement Award
/media-center/Text duplicate Media Center
/sponsorship-opportunities/Text duplicate Sponsorship Opportunities
/mission-and-goals/Find out more about NSF
https://events.thensf.org/Nati...New window External Subdomain Anchor Text duplicate Register Now
/guidelines/No Text
/guidelines/Learn More
/sleep-in-america-polls/No Text
/sleep-in-america-polls/Text duplicate Learn More
/sleep-health-index/No Text
/sleep-health-index/Text duplicate Learn More
/sleep-health-journal/No Text
/sleep-health-journal/Text duplicate Learn More
/sleep-health-and-the-covid-19...No Text
/sleep-health-and-the-covid-19...Text duplicate Learn More
/sleep-awareness-week/No Text
/sleep-awareness-week/Text duplicate Learn More
/drowsy-driving-prevention/No Text
/drowsy-driving-prevention/Text duplicate Learn More
/nsfs-statement-on-sleep-healt...No Text
/nsfs-statement-on-sleep-healt...Text duplicate Learn More
/importance-of-later-school-st...No Text
/importance-of-later-school-st...Text duplicate Learn More
/drowsy-driving-prevention/No Text
/drowsy-driving-prevention/Text duplicate Learn More
/national-sleep-foundation-dro...IMG-ALT NSF-MediaCenter-FeatImg_Solid-Orange
/national-sleep-foundation-dro...Text duplicate Learn More
/nsf-drowsy-driving-programs-e...No Text
/nsf-drowsy-driving-programs-e...Text duplicate Learn More
/mark-r-rosekind-to-chair-board/No Text
/mark-r-rosekind-to-chair-board/Text duplicate Learn More
/smart-bed-data/IMG-ALT Square image of white bedding with the NSF logo overlayed
/smart-bed-data/Text duplicate Learn More
/sleep-duration-recommendations/No Text
/sleep-duration-recommendations/Text duplicate Learn More
/national-sleep-foundation-and...Text duplicate IMG-ALT Square image of white bedding with the NSF logo overlayed
/national-sleep-foundation-and...Text duplicate Learn More
/stephen-h-sheldon-lifetime-ac...IMG-ALT A photo of Stephen Sheldon
/stephen-h-sheldon-lifetime-ac...Text duplicate Learn More
/hot-tub-before-bed/Text duplicate IMG-ALT Square image of white bedding with the NSF logo overlayed
/hot-tub-before-bed/Text duplicate Learn More
/drowsy-driving-prevention-panel/No Text
/drowsy-driving-prevention-panel/Text duplicate Learn More
/congressional-resolution-845/No Text
/congressional-resolution-845/Text duplicate Learn More
/sleep-to-drive-alert-to-keep-...No Text
/sleep-to-drive-alert-to-keep-...Text duplicate Learn More
/national-sleep-foundation-lau...No Text
/national-sleep-foundation-lau...Text duplicate Learn More
/life-and-legacy-of-dr-timothy...No Text
/life-and-legacy-of-dr-timothy...Text duplicate Learn More
https://www.thensf.org/?p=972No Text
https://www.thensf.org/?p=972A Healthy Night’s Sleep Starts the Moment You Wake Up
https://www.thensf.org/?p=972Learn more
https://www.thensf.org/?p=971No Text
https://www.thensf.org/?p=971Healthy Sleep Starts Before You Hit the Sheets
https://www.thensf.org/?p=971Text duplicate Learn more
https://www.thensf.org/?p=967No Text
https://www.thensf.org/?p=967Get Healthy Sleep by Eating Right on Schedule
https://www.thensf.org/?p=967Text duplicate Learn more
/sleep-health-topics/Read more Sleep Health Topics
/ikea-u-s-collaborates-with-na...Text duplicate Learn More
https://www.instagram.com/slee...New window External Subdomain Instagram
https://www.facebook.com/natio...New window External Subdomain Facebook
https://twitter.com/sleepfound...New window External X
https://www.linkedin.com/compa...New window External Subdomain LinkedIn
https://www.youtube.com/user/N...New window External Subdomain YouTube
https://www.thensf.org/The leading voice of sleep health
A-TITLE National Sleep Foundation
https://www.thensf.org/contact/Contact Us
/terms-of-use/Terms of Use
https://www.thensf.org/copyright/Copyright
/privacy-policy/Privacy Policy
https://www.instagram.com/slee...New window External Subdomain No Text
https://www.facebook.com/natio...New window External Subdomain No Text
https://twitter.com/sleepfound...New window External No Text
https://www.linkedin.com/compa...New window External Subdomain No Text
https://www.youtube.com/user/N...New window External Subdomain No Text
https://bsky.app/profile/sleep...New window External IMG-ALT Bluesky

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.thensf.org/"
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 slow (1.04 seconds). The response time should be less than 0.4 seconds. Slow websites are bad for search engine bots and also result in bad user experience.
The file size of the HTML document is fine (262 kB).

HTTP Response Header

NameValue
servernginx
dateWed, 21 Oct 2026 00:41:33 GMT
content-typetext/html; charset=UTF-8
varyAccept-Encoding
link<https://www.thensf.org/wp-json/>; rel="https://api.w.org/"
x-powered-byWP Engine
x-cacheableSHORT
cache-controlmax-age=600, must-revalidate
x-cacheHIT: 12
x-cache-groupnormal
content-encodinggzip
statuscode200
http_versionHTTP/2

External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 2,241 referring domains.
This page has 5,387 backlinks.
This page has backlinks from 1,377 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

Crawl-delay: 10
# START YOAST BLOCK
# ---------------------------
User-agent: *
Disallow:

Sitemap: https://www.thensf.org/sitemap_index.xml
# ---------------------------
# END YOAST BLOCK

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www.thensf.org
National Sleep Foundation
The National Sleep Foundation (NSF) is dedicated to improving public health and well-being through sleep education and advocacy.

Most important keywords

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

KeywordResultRecheck
Sleep74%Check
Health68%Check
National68%Check
Foundation68%Check
Sleep Health68%Check
Sleep Foundation68%Check
National Sleep68%Check
National Sleep Foundation68%Check
NSF61%Check
Sleep Education60%Check
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