Nhlbi.nih.gov - SEO Checker

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Overview of the SEO Check
Meta information
61% 
Page quality
67% 
Page structure
100% 
Link structure
73% 
Server
86% 
External factors
100% 
SEO Score
Response time
1.03 s
File size
113.70 kB
Words
673
Media files
26
Number of links
88 internal / 15 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Advancing Heart, Lung, Blood, and Sleep Research & Innovation | NHLBI, NIH
The page title should be shorter than 580 pixels. It is 703 pixels long. Optimize title
There are no duplicate words in the title
Meta description
(Critically important)
The meta description is missing.
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.nhlbi.nih.gov/
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)
The specified alternate links have no errors.
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
referrerno-referrer-when-downgrade
GeneratorDrupal 10 (https://www.drupal.org)
MobileOptimizedwidth
HandheldFriendlytrue
viewportwidth=device-width, initial-scale=1.0
langen
twitter:cardsummary_large_image
twitter:site@nih_nhlbi
twitter:titleAdvancing Heart, Lung, Blood, and Sleep Research & Innovation | NHLBI, NIH
twitter:imagehttps://www.nhlbi.nih.gov/themes/custom/nhlbi/images/NHLBI_Meta_Image.png
og:site_nameNHLBI, NIH
og:titleAdvancing Heart, Lung, Blood, and Sleep Research & Innovation
og:imagehttps://www.nhlbi.nih.gov/themes/custom/nhlbi/images/NHLBI_Meta_Image.png
X-UA-CompatibleIE=edge
charsetutf-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.
This page contains 673 words. That's ok.
25.1% of the text are stop words.
The page contains a listing, which indicates a good text layout.
7 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 14.62 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" 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 13 tags for this page.
Image SEO
(Somewhat important)
7 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
...ules/custom/nhlbi_blazy/images/clear.pngU.S. flag
...ules/custom/nhlbi_blazy/images/clear.pngNo alt attribute provided
...ules/custom/nhlbi_blazy/images/clear.pngNo alt attribute provided
data:[...] Base64National Heart, Lung, and Blood Home
...ules/custom/nhlbi_blazy/images/clear.pngsmiling mother and daughter eating
...ules/custom/nhlbi_blazy/images/clear.pngNo alt attribute provided
...ules/custom/nhlbi_blazy/images/clear.pngNo alt attribute provided
...ules/custom/nhlbi_blazy/images/clear.pngNo alt attribute provided
...ules/custom/nhlbi_blazy/images/clear.pngNo alt attribute provided
...ules/custom/nhlbi_blazy/images/clear.pngNo alt attribute provided
...ules/custom/nhlbi_blazy/images/clear.pngCup of coffee
...ules/custom/nhlbi_blazy/images/clear.pngTwo smiling lungs
...ules/custom/nhlbi_blazy/images/clear.pngFruits and vegetables that form a heart
...ic/2025-03/Picture10_0.jpg?itok=de1FHBuIHealthy food in a heart-shaped bowl
...ules/custom/nhlbi_blazy/images/clear.png“”
...ules/custom/nhlbi_blazy/images/clear.png“”
...ules/custom/nhlbi_blazy/images/clear.png“”
...ules/custom/nhlbi_blazy/images/clear.pngSenior couple looking at a laptop computer together.
...ules/custom/nhlbi_blazy/images/clear.pngHeadshot of Dr. Gary H. Gibbons
...ules/custom/nhlbi_blazy/images/clear.pngchat bubbles
...ules/custom/nhlbi_blazy/images/clear.pngenvelope
data:[...] Base64National Heart, Lung, and Blood Home
...stom/nhlbi/images/ico-facebook-white.svgFacebook social media
...s/custom/nhlbi/images/x-twitter-logo.svgX social media
...ustom/nhlbi/images/ico-youtube-white.svgYoutube social media
.../custom/nhlbi/images/linkedin-brands.svgLinkedIn social media

Page structure

H1 heading
(Critically important)
Take action toward better heart health for National Nutrition Month
The H1 heading is perfect.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 Take action toward better heart health for National Nutrition Month
H2 What's Happening at the NHLBI
H2 Health Topics
H2 Featured Areas of Research
H2 NHLBI Events
H2 Our Mission
H3 When it comes to the health benefits of coffee, timing may count
H3 Lung Health Basics: Sleep Fact Sheet
H3 Getting More Potassium Fact Sheet
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 15 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://www.nhlbi.nih.gov/Anchor Skip to main content
https://www.nhlbi.nih.gov/IMG-ALT National Heart, Lung, and Blood Home
https://www.nhlbi.nih.gov/healthAll Health Topics A-Z
/health/asthmaAsthma
/health/heart-healthy-livingHeart-Healthy Living
/health/high-blood-pressureHigh Blood Pressure
/health/sickle-cell-diseaseSickle Cell Disease
/health/sleep-apneaSleep Apnea
https://www.nhlbi.nih.gov/covidInformation & Resources on COVID-19
/educationEducation Programs and Initiatives
/health-topics/education-and-a...The Heart Truth®
/BreatheBetterLearn More Breathe Better®
/education/bloodBlood Diseases & Disorders Education Program
/resources?f[0]=language:EnglishPublications and Resources
/research/clinical-trialsClinical Trials and Studies
https://www.nhlbi.nih.gov/scienceResearch Focus Areas
/science/blood-disorders-and-b...Blood Disorders and Blood Safety
/science/sleep-science-and-sle...Sleep Science and Sleep Disorders
/science/lung-diseasesLung Diseases
/science/health-disparitiesHealth Disparities
/science/heart-and-vascular-di...Heart and Vascular Diseases
/science/precision-medicine-ac...Precision Medicine Activities
/science/obesity-nutrition-and...Obesity, Nutrition, and Physical Activity
/science/population-and-epidem...Population and Epidemiology Studies
/science/womens-healthWomen’s Health
/research/research-topicsResearch Topics
/science/all-scienceAll Science A-Z
/grants-and-trainingGrants and Training Home
/grants-and-training/policies-...Policies and Guidelines
/grants-and-training/funding-o...Funding Opportunities and Contacts
/grants-and-training/training-...Training and Career Development
/news-and-eventsNews and Events Home
/news-and-events/email-alertsEmail Alerts
https://www.nhlbi.nih.gov/newsAll News
/news?news_type=press_releaseNHLBI News
/news?news_type=news_mentionNHLBI in the Press
/news?news_type=feature_articleResearch Features
/ask-a-scientistAsk a Scientist
https://www.nhlbi.nih.gov/eventsAll Events
/events?field_event_date_custo...Past Events
/events?field_event_date_custo...Upcoming Events
https://www.nhlbi.nih.gov/aboutAbout NHLBI Home
/about/strategic-visionMission and Strategic Vision
/about/leadershipLeadership
/about/divisionsDivisions, Offices and Centers
/about/advisory-and-peer-revie...Advisory Committees
/about/budget-and-legislative-...Budget and Legislative Information
/about/working-at-nhlbiJobs and Working at the NHLBI
https://www.nhlbi.nih.gov/contactContact and FAQs
/sleep-research-planNIH Sleep Research Plan
https://www.nhlbi.nih.gov/HOME
/heart-truth/eat-a-heart-healt...Eat a Heart-Healthy Diet
/educationSubdomain Health Education Resources
/research/clinical-trialsSubdomain Participate in a Study
/grants-and-training/funding-o...Subdomain Funding Opportunities
https://www.nhlbi.nih.gov/newsText duplicate NHLBI News
https://www.nhlbi.nih.gov/healthSubdomain Health Topics
/news/2025/when-it-comes-healt...News When it comes to the health benefits of coffee, timing may count
IMG-ALT Cup of coffee
/resources/lung-health-basics-...Education Lung Health Basics: Sleep Fact Sheet
IMG-ALT Two smiling lungs
/resources/getting-more-potass...Education Getting More Potassium Fact Sheet
IMG-ALT Fruits and vegetables that form a heart
https://www.facebook.com/NHLBI/External Subdomain A-TITLE Facebook
https://www.youtube.com/user/N...External Subdomain A-TITLE Youtube
https://www.linkedin.com/compa...External Subdomain A-TITLE Linkedin
/node/92317View Heart-Healthy Living Health Topic
/node/92317View Heart-Healthy Living
/node/92311Coronary Heart Disease
/node/93138Text duplicate Sleep Apnea
/node/92305Blood Cholesterol
/node/92316Heart Inflammation
/health/narcolepsyNarcolepsy
/node/92315Heart Failure
/health-topicsView All Topics
/research/heart-failureLearn more about heart failure research at NHLBI
https://biodatacatalyst.nhlbi....External Subdomain BioData Catalyst Research
https://covid19community.nih.gov/External Subdomain Community Engagement Alliance (CEAL) Against COVID-19 Disparities
/events/2025/sickle-cell-disea...Sickle Cell Disease Advisory Committee - Agenda, January 14, 2025 Tue, Jan 14
/events/2025/taking-care-ourhe...Taking Care of #OurHearts Together: Building Heart-Healthy Communities Wed, Jan 15
https://www.nhlbi.nih.gov/eventsSubdomain View More Events
/resources/aboutSearch for NHLBI publications
https://www.nhlbi.nih.gov/aboutSubdomain Learn More About the NHLBI
/about/strategic-visionSubdomain Text duplicate Mission and Strategic Vision
/about/divisionsSubdomain Divisions, Offices, and Centers
/about/leadershipSubdomain View NHLBI Leadership
/about/leadership/gibbons-garySubdomain Meet the NHLBI Director
https://www.nhlbi.nih.gov/Anchor Back to top
/about/contact/website-privacy...Accessibility
https://www.edi.nih.gov/no-fea...External Subdomain No FEAR Act Data
/about/contact/website-privacy...Privacy Policy
/about/contact/website-privacy...Freedom of Information Act (FOIA)
https://www.hhs.gov/vulnerabil...External Subdomain HHS Vulnerability Disclosure
https://www.hhs.gov/External Subdomain Health and Human Services
https://www.nih.gov/External Subdomain National Institutes of Health
https://oig.hhs.gov/External Subdomain Office of the Inspector General
https://www.usa.gov/External Subdomain USA.gov
/news-and-events/email-alertsGet Email Alerts
https://www.nhlbi.nih.gov/Text duplicate IMG-ALT National Heart, Lung, and Blood Home
https://www.nhlbi.nih.gov/contactContact Us
/siteindexSite Index
/about/working-at-nhlbiJobs
https://www.facebook.com/NHLBI/External Subdomain IMG-ALT Facebook social media
https://twitter.com/nih_nhlbi?...External IMG-ALT X social media
https://www.youtube.com/user/N...External Subdomain IMG-ALT Youtube social media
https://www.linkedin.com/compa...External Subdomain IMG-ALT LinkedIn social media

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.nhlbi.nih.gov/"
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 slow (1.03 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 (114 kB).

HTTP Response Header

NameValue
dateSat, 15 Mar 2025 03:45:33 GMT
content-typetext/html; charset=UTF-8
cache-controlmax-age=86400, public
x-drupal-dynamic-cacheMISS
content-languageen
x-content-type-optionsnosniff
x-frame-optionsSAMEORIGIN
expiresSun, 19 Nov 1978 05:00:00 GMT
varyCookie,Accept-Encoding
x-drupal-cacheHIT
last-modifiedSat, 15 Mar 2025 03:00:14 GMT
etag"1742007614-gzip"
content-encodinggzip
x-xss-protection1; mode=block
strict-transport-securitymax-age=31536000; includeSubDomains; preload
x-azure-ref20250315T034533Z-r18967bb5ddwf7bfhC1DUSte0c0000000dkg00000000a4x3
x-cacheCONFIG_NOCACHE
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 43,832 referring domains.
This page has 3,091,357 backlinks.
This page has backlinks from 24,283 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

#
# robots.txt
#
# This file is to prevent the crawling and indexing of certain parts
# of your site by web crawlers and spiders run by sites like Yahoo!
# and Google. By telling these "robots" where not to go on your site,
# you save bandwidth and server resources.
#
# This file will be ignored unless it is at the root of your host:
# Used:    http://example.com/robots.txt
# Ignored: http://example.com/site/robots.txt
#
# For more information about the robots.txt standard, see:
# http://www.robotstxt.org/robotstxt.html

User-agent: *
# CSS, JS, Images
Allow: /core/*.css$
Allow: /core/*.css?
Allow: /core/*.js$
Allow: /core/*.js?
Allow: /core/*.gif
Allow: /core/*.jpg
Allow: /core/*.jpeg
Allow: /core/*.png
Allow: /core/*.svg
Allow: /profiles/*.css$
Allow: /profiles/*.css?
Allow: /profiles/*.js$
Allow: /profiles/*.js?
Allow: /profiles/*.gif
Allow: /profiles/*.jpg
Allow: /profiles/*.jpeg
Allow: /profiles/*.png
Allow: /profiles/*.svg
# Directories
Disallow: /core/
Disallow: /profiles/
# Files
Disallow: /README.md
Disallow: /composer/Metapackage/README.txt
Disallow: /composer/Plugin/ProjectMessage/README.md
Disallow: /composer/Plugin/Scaffold/README.md
Disallow: /composer/Plugin/VendorHardening/README.txt
Disallow: /composer/Template/README.txt
Disallow: /modules/README.txt
Disallow: /sites/README.txt
Disallow: /themes/README.txt
Disallow: /web.config
# Paths (clean URLs)
Disallow: /admin/
Disallow: /comment/reply/
Disallow: /filter/tips
Disallow: /node/add/
Disallow: /search/
Disallow: /user/register
Disallow: /user/password
Disallow: /user/login
Disallow: /user/logout
Disallow: /media/oembed
Disallow: /*/media/oembed
# Paths (no clean URLs)
Disallow: /index.php/admin/
Disallow: /index.php/comment/reply/
Disallow: /index.php/filter/tips
Disallow: /index.php/node/add/
Disallow: /index.php/search/
Disallow: /index.php/user/password
Disallow: /index.php/user/register
Disallow: /index.php/user/login
Disallow: /index.php/user/logout
Disallow: /index.php/media/oembed
Disallow: /index.php/*/media/oembed
# Prevent crawlers from hitting old search.
Disallow: /cgi-bin/search/

# Prevent crawlers from indexing council round pages
Disallow: /about/advisory-and-peer-review-committees/roster/hlbp/

# Disallow Unaliased Nodes
Disallow: /node/*

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Search preview

Most important keywords

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

KeywordResultRecheck
NHLBI66%Check
Heart65%Check
Heart Health59%Check
Health56%Check
NIH56%Check
Lung54%Check
Act54%Check
gov52%Check
National52%Check
NHLBI PUBLICATIONS51%Check
Show more keywords and terms

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