Health.harvard.edu - SEO Checker

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Overview of the SEO Check
Meta information
98% 
Page quality
88% 
Page structure
72% 
Link structure
51% 
Server
95% 
External factors
100% 
SEO Score
Response time
1.88 s
File size
256.40 kB
Words
1149
Media files
44
Number of links
104 internal / 18 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Health Information and Medical Information - Harvard Health
The length of the page title is perfect. (538 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Find the best information about living a healthier life from the trusted medical team at Harvard Medical School. Trusted advice for a healthier life.
The length of the meta description is perfect. (885 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.health.harvard.edu/
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)
The favicon is linked correctly.

Meta tags

NameValue
viewportwidth=device-width, initial-scale=1
csrf-tokenygp2JPLsaySQL9kwbDPdeEuZsqbABphIFLQSR1eS
algolia-site-verificationF445628BD501C3DB
descriptionFind the best information about living a healthier life from the trusted medical team at Harvard Medical School. Trusted advice for a healthier life.
keywordshealth information, medical information, health news, health report, health newsletters, health newsletter, Harvard Health Publications, Harvard Health Publishing, Harvard Health, health.harvard.edu, health harvard edu, Harvard Heart Letter, Harvard Health Letter, Harvard Women's Health Watch, Harvard Mental Health Letter, Harvard Men's Health Watch, Perspectives on Prostate Disease
apple-mobile-web-app-titleHarvard Health
application-nameHarvard Health
msapplication-TileColor#b70034
msapplication-TileImagehttps://domf5oio6qrcr.cloudfront.net/icon/mstile-144x144.png
theme-color#ffffff
langen
twitter:siteHarvard Health
twitter:titleHealth Information and Medical Information - Harvard Health
twitter:descriptionFind the best information about living a healthier life from the trusted medical team at Harvard Medical School. Trusted advice for a healthier life.
twitter:urlhttps://www.health.harvard.edu/
twitter:imagehttps://www.health.harvard.edu/img/hhp-social-share.jpg
twitter:image:altHarvard Health Publishing - Harvard Medical School
twitter:cardsummary_large_image
og:site_nameHarvard Health
og:titleHealth Information and Medical Information - Harvard Health
og:descriptionFind the best information about living a healthier life from the trusted medical team at Harvard Medical School. Trusted advice for a healthier life.
og:localeen_US
og:typewebsite
og:urlhttps://www.health.harvard.edu/
og:imagehttps://www.health.harvard.edu/img/hhp-social-share.jpg
og:image:altHarvard Health Publishing - Harvard Medical School
charsetutf-8

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Page quality

Content
(Critically important)
There are 2 text duplicates on this page:
  • Duplicate: Hemoglobin A1c (HbA1c): What to know if you have diabetes or prediabet...
The average number of words per sentence of 25.79 words is high.
This page contains 1149 words. That's ok.
27.2% 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.
The text content is perfect.
No placeholders texts or images were found.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
A viewport "width=device-width, initial-scale=1" is provided.
At least one Apple touch icon is specified.
Bold and strong tags
(Somewhat important)
Some tags are too long. With 120 characters this one is longer than 70 characters:
"25 gut health hacks is yours absolutely free when you sign up to receive health information from harva..."
The following tag is repeated too often: 25 gut health hacks
Image SEO
(Somewhat important)
1 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
/img/logos/NEW-HHP_logo_stack4.svgHarvard Health Publishing Logo
...ersions/gettyimages-1795404355-micro.jpgblog image 1
...ersions/gettyimages-1307510221-micro.jpgblog image 1
...ersions/gettyimages-1432980561-micro.jpgblog image 1
...ersions/gettyimages-1315202942-micro.jpgblog image 1
...versions/gettyimages-877738018-micro.jpgblog image 1
...d8-67fc-45bb-96b0-d7a413ecc7e3-micro.jpgblog image 1
...versions/gettyimages-157738438-micro.jpgblog image 1
...ersions/gettyimages-1392101842-micro.jpgblog image 1
...ersions/gettyimages-1646322126-micro.jpgblog image 1
...versions/gettyimages-496108007-micro.jpgblog image 1
...library/15514/gettyimages-1307510221.jpgNo alt attribute provided
...817/conversions/hb-vitamins-03-thumb.jpgBest source of vitamins? Your plate, not your medicine cabinet featured image
...p3-deadlift-n0725-gi1183049425-thumb.jpgHow to fill out a “flat” behind featured image
...ersions/gettyimages-1795404355-thumb.jpgExtreme heat endangers older adults: What to know and do featured image
...brary/16860/conversions/n0825h-thumb.jpgDiabetes and obesity drug shows promise for fatty liver disease featured image
...loatingman-ml0825-gi1432587571-thumb.jpgLetting the air out of bloating featured image
...ons/p1-hdl-ml0825-gi2194521914-thumb.jpgThe complex story of HDL cholesterol featured image
...tlebellman-ml0825-gi2178337468-thumb.jpgComing full circle featured image
...brary/16873/conversions/w0825h-thumb.jpgCombined with exercise, time-restricted eating may boost fat loss featured image
...ns/p3-gerd-wl0825-gi1354565611-thumb.jpgIs it really GERD? featured image
...alibrary/16837/insomnia-&-pain_lemon.jpgA yellow square with the words 50% of people with insomnia are coping with pain, plus Stat of the Week and Harvard Health Publishing
...ersions/gettyimages-1795404355-micro.jpgblog image 1
...ersions/gettyimages-1307510221-micro.jpgblog image 1
...ersions/gettyimages-1432980561-micro.jpgblog image 1
...ersions/gettyimages-1315202942-micro.jpgblog image 1
...versions/gettyimages-877738018-micro.jpgblog image 1
...d8-67fc-45bb-96b0-d7a413ecc7e3-micro.jpgblog image 1
...versions/gettyimages-157738438-micro.jpgblog image 1
...ersions/gettyimages-1392101842-micro.jpgblog image 1
...ersions/gettyimages-1646322126-micro.jpgblog image 1
...versions/gettyimages-496108007-micro.jpgblog image 1
...iNbfeCuBZ553H7Jrb3t470RDFhgkoCJE1ACU.pngphoto of Chika Anekwe, MD, MPH
...hXP5MlckGcpBwtSOOH6XxRmkaf56pXc55t6I.jpgphoto of Christopher P. Cannon, MD
...iXbSzwg4vDBqTJSHHfY0L1IXpMtDx9g0OzeC.jpgphoto of Lauren Elson, MD
...N4cm3v3kTmZW00KoUO9ysWkHOTVuIy3j2Gbl.jpgphoto of Teresa Fung, MS, RD, ScD
...vFKwJ50Ua5wwL7mmQsGfPt7r3A31Yke9NTPv.jpgphoto of Howard E. LeWine, MD
...KaVzyx3xPsUxIBc9zJz8m3zvysnJa3UJsGOd.jpgphoto of Robert H. Shmerling, MD
/img/logos/hhp-grayscale-logo.svgHarvard Medical Logo
/img/logos/NEW-HHP_logo_stack4.svgHarvard Health Publishing Logo
/img/logos/NEW-HHP_logo_stack4.svgHarvard Health Publishing Logo
...hr200px-25_gut_health_hacks_freemium.pngFree Report! 25 Gut Health Hacks.
/img/logos/logo-mark.svgHarvard Health Publishing Logo
/img/logos/logo-mark.svgHarvard Health Publishing Logo

Page structure

H1 heading
(Critically important)
Harvard Health Publishing
The H1 heading is perfect.
Headings
(Important)
There are 38 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 Harvard Health Publishing
H2 Main Content
H2 Helpful Links
H2 Want to cool down? 14 ideas to try
H2 Trending Articles
H2 Unlimited Site Access for Less Than $1.25/week
H2 Common Conditions
H2 Staying Healthy
H2 Stat of the Week
H2 Harvard Health Publishing Resources
H2 Harvard Health Publishing Editorial Board
H2 License Harvard Health Content
H2 Free Healthbeat Signup
H2 Footer
H3 Best source of vitamins? Your plate, not your medicine cabinet
H3 How to fill out a “flat” behind
H3 Extreme heat endangers older adults: What to know and do
H3 month
H3 year
H3 What You Get
H3 Diabetes and obesity drug shows promise for fatty liver disease
H3 Letting the air out of bloating
H3 The complex story of HDL cholesterol
H3 Coming full circle
H3 Combined with exercise, time-restricted eating may boost fat loss
H3 Is it really GERD?
H3 Harvard Health Online Subscribers
H3 Editorial Features
H3 Products
H3 Chika Anekwe, MD, MPH
H3 Christopher P. Cannon, MD
H3 Lauren Elson, MD
H3 Teresa Fung, MS, RD, ScD
H3 Howard E. LeWine, MD
H3 Robert H. Shmerling, MD
H3 My Account
H3 Order Now
H3 More
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.
The number of internal links is ok.
There are 18 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://www.health.harvard.edu/Subdomain Harvard Health Publishing
IMG-ALT Harvard Health Publishing Logo
https://www.health.harvard.edu/Subdomain Text duplicate Harvard Health Publishing
/hho-plus?utm_source=site&utm_...Subdomain HarvardHealthOnline+
/customer-serviceSubdomain Customer Service
/licensingSubdomain Content Licensing
/about-usSubdomain About Us
/loginSubdomain Log In
/healthbeatSubdomain Free HealthBeat Signup
/subscribeSubdomain Subscriptions
/special-health-reportsSubdomain Special Health Reports
https://www.harvardhealthonlin...New window External Subdomain Online Courses
/pay-billSubdomain Pay Subscription Bill
/category/common-conditionsSubdomain Common Conditions
/category/staying-healthySubdomain Staying Healthy
/resourcesSubdomain Resources
/blogSubdomain Blog
/diseases-and-conditions/coron...Subdomain COVID-19 Updates
/hho-plus?utm_source=site&utm_...Subdomain Text duplicate HarvardHealthOnline+
/category/common-conditionsSubdomain Text duplicate Common Conditions
/category/staying-healthySubdomain Text duplicate Staying Healthy
/resourcesSubdomain Text duplicate Resources
/blogSubdomain Text duplicate Blog
/customer-serviceSubdomain Text duplicate Customer Service
/about-usSubdomain Text duplicate About Us
/licensingSubdomain Text duplicate Content Licensing
/healthbeatSubdomain Free Healthbeat Signup
/subscribeSubdomain Text duplicate Subscriptions
/special-health-reportsSubdomain Text duplicate Special Health Reports
https://www.harvardhealthonlin...New window External Subdomain Text duplicate Online Courses
/pay-billSubdomain Text duplicate Pay Subscription Bill
/hho-plus?utm_source=site&utm_...Subdomain Subscribe for $1.25/week
/blog/extreme-heat-endangers-o...Subdomain Extreme heat endangers older adults: What to know and do
IMG-ALT blog image 1
/blog/want-to-cool-down-14-ide...Subdomain Want to cool down? 14 ideas to try
IMG-ALT blog image 1
/blog/what-is-a-psa-test-and-h...Subdomain What is a PSA test and how is it used?
IMG-ALT blog image 1
/diseases-and-conditions/blood...Subdomain Blood sugar–friendly fruits if you have diabetes
IMG-ALT blog image 1
/blog/gratitude-enhances-healt...Subdomain Gratitude enhances health, brings happiness — and may even lengthen lives
IMG-ALT blog image 1
/blog/respiratory-health-harms...Subdomain Respiratory health harms often follow flooding: Taking these steps can help
IMG-ALT blog image 1
/staying-healthy/could-tea-tre...Subdomain Could tea tree oil help treat acne or athlete’s foot?
IMG-ALT blog image 1
/diseases-and-conditions/hemog...Subdomain Hemoglobin A1c (HbA1c): What to know if you have diabetes or prediabetes or are at risk for these conditions
IMG-ALT blog image 1
/womens-health/understanding-h...Subdomain Understanding hormone therapy for menopausal symptoms
IMG-ALT blog image 1
/diseases-and-conditions/what-...Subdomain What could be causing your blurry vision?
IMG-ALT blog image 1
/blog/want-to-cool-down-14-ide...Subdomain Text duplicate Want to cool down? 14 ideas to try
/blog/want-to-cool-down-14-ide...Subdomain Read Article
/staying-healthy/best-source-o...Subdomain Staying Healthy Best source of vitamins? Your plate, not your medicine cabinet
IMG-ALT Best source of vitamins? Your plate, not your medicine cabinet featured image
/staying-healthy/how-to-fill-o...Subdomain Staying Healthy How to fill out a “flat” behind
IMG-ALT How to fill out a “flat” behind featured image
/blog/extreme-heat-endangers-o...Subdomain Staying Healthy Extreme heat endangers older adults: What to know and do
IMG-ALT Extreme heat endangers older adults: What to know and do featured image
/loginSubdomain Login
/promotions/harvard-health-pub...Subdomain Anchor select plan
/promotions/harvard-health-pub...Subdomain Anchor Text duplicate select plan
/loginSubdomain Text duplicate Login
/diseases-and-conditions/diabe...Subdomain Diseases & Conditions Diabetes and obesity drug shows promise for fatty liver disease
IMG-ALT Diabetes and obesity drug shows promise for fatty liver disease featured image
/diseases-and-conditions/letti...Subdomain Diseases & Conditions Letting the air out of bloating
IMG-ALT Letting the air out of bloating featured image
/heart-health/the-complex-stor...Subdomain Heart Health The complex story of HDL cholesterol
IMG-ALT The complex story of HDL cholesterol featured image
/category/common-conditionsSubdomain View More
/exercise-and-fitness/coming-f...Subdomain Exercise & Fitness Coming full circle
IMG-ALT Coming full circle featured image
/staying-healthy/combined-with...Subdomain Staying Healthy Combined with exercise, time-restricted eating may boost fat loss
IMG-ALT Combined with exercise, time-restricted eating may boost fat loss featured image
/diseases-and-conditions/is-it...Subdomain Diseases & Conditions Is it really GERD?
IMG-ALT Is it really GERD? featured image
/category/staying-healthySubdomain Text duplicate View More
/pain/sleeping-better-when-you...New window Subdomain Learn More
/blog/extreme-heat-endangers-o...Subdomain Text duplicate Extreme heat endangers older adults: What to know and do
IMG-ALT blog image 1
/blog/want-to-cool-down-14-ide...Subdomain Text duplicate Want to cool down? 14 ideas to try
IMG-ALT blog image 1
/blog/what-is-a-psa-test-and-h...Subdomain Text duplicate What is a PSA test and how is it used?
IMG-ALT blog image 1
/diseases-and-conditions/blood...Subdomain Text duplicate Blood sugar–friendly fruits if you have diabetes
IMG-ALT blog image 1
/blog/gratitude-enhances-healt...Subdomain Text duplicate Gratitude enhances health, brings happiness — and may even lengthen lives
IMG-ALT blog image 1
/blog/respiratory-health-harms...Subdomain Text duplicate Respiratory health harms often follow flooding: Taking these steps can help
IMG-ALT blog image 1
/staying-healthy/could-tea-tre...Subdomain Text duplicate Could tea tree oil help treat acne or athlete’s foot?
IMG-ALT blog image 1
/diseases-and-conditions/hemog...Subdomain Text duplicate Hemoglobin A1c (HbA1c): What to know if you have diabetes or prediabetes or are at risk for these conditions
IMG-ALT blog image 1
/womens-health/understanding-h...Subdomain Text duplicate Understanding hormone therapy for menopausal symptoms
IMG-ALT blog image 1
/diseases-and-conditions/what-...Subdomain Text duplicate What could be causing your blurry vision?
IMG-ALT blog image 1
/newslettersSubdomain Harvard Health Newsletters
/health-a-to-zSubdomain Health A to Z
/diagnostic-tests-and-medical-...Subdomain Diagnostic Tests and Medical Procedures
/decision-guidesSubdomain Health Decision Guides
/ask-harvard-medical-school-vi...Subdomain Ask Harvard Medical School Video Series
/loginSubdomain Log in to Access Your Subscription
https://adult-autism.health.ha...New window External Subdomain Adult Autism Health Resources
/birth-controlSubdomain Birth Control Center
/blogSubdomain Harvard Health Blog
/topics/prostate-healthSubdomain Harvard Prostate Knowledge
/staying-healthy/hhp-medicatio...HHP Medication Safety Watch
https://lyme.health.harvard.edu/New window External Subdomain Lyme Wellness Initiative
/mindscapeNew window Subdomain Mindscape: Helping young minds thrive
/healthbeatSubdomain FREE Email Newsletters
https://www.harvardhealthonlin...New window External Subdomain Online Learning Courses
/special-health-reportsSubdomain Text duplicate Special Health Reports
/newslettersSubdomain Print Subscriptions
/subscribeSubdomain Digital Subscriptions
/authors/chika-anekwe-md-mphSubdomain Chika Anekwe, MD, MPH Contributor; Editorial Advisory Board Member, Harvard Health Publishing
IMG-ALT photo of Chika Anekwe, MD, MPH
/authors/christopher-p-cannon-mdSubdomain Christopher P. Cannon, MD Editor in Chief, Harvard Heart Letter; Editorial Advisory Board Member, Harvard Health Publishing
IMG-ALT photo of Christopher P. Cannon, MD
/authors/lauren-elson-mdSubdomain Lauren Elson, MD Contributor; Editorial Advisory Board Member, Harvard Health Publishing
IMG-ALT photo of Lauren Elson, MD
/authors/teresa-fung-ms-rd-scdSubdomain Teresa Fung, MS, RD, ScD Contributor; Editorial Advisory Board Member, Harvard Health Publishing
IMG-ALT photo of Teresa Fung, MS, RD, ScD
/authors/howard-lewine-mdSubdomain Howard E. LeWine, MD Chief Medical Editor, Harvard Health Publishing; Editorial Advisory Board Member, Harvard Health Publishing
IMG-ALT photo of Howard E. LeWine, MD
/authors/robert-h-shmerling-mdSubdomain Robert H. Shmerling, MD Senior Faculty Editor, Harvard Health Publishing; Editorial Advisory Board Member, Harvard Health Publishing
IMG-ALT photo of Robert H. Shmerling, MD
/editorial-boardSubdomain View all board members
/licensingSubdomain Contact Us
/healthbeatSubdomain Sign Up
https://www.health.harvard.edu/Subdomain Text duplicate Harvard Health Publishing
IMG-ALT Harvard Medical Logo
https://www.facebook.com/Harva...New window External Subdomain Facebook
https://twitter.com/harvardhealthNew window External Twitter
https://www.linkedin.com/compa...New window External Subdomain Linkedin
https://www.youtube.com/channe...New window External Subdomain YouTube
/customer-serviceSubdomain Text duplicate Customer Service
/loginSubdomain Log in
https://www.harvardhealthonlin...New window External Subdomain Text duplicate Online Learning Courses
/subscribeSubdomain Text duplicate Digital Subscriptions
/special-health-reportsSubdomain Text duplicate Special Health Reports
/newslettersSubdomain Text duplicate Print Subscriptions
/about-usSubdomain Text duplicate About Us
/permissionsSubdomain Permissions
/licensingSubdomain Text duplicate Content Licensing
/topicsSubdomain Topics
https://trademark.harvard.edu/...External Subdomain Trademark Notice
https://trademark.harvard.edu/...External Subdomain Harvard Health Publishing®
/privacy-policySubdomain Anchor Do not sell my personal information
/privacy-policySubdomain Privacy Policy and Terms of Use
https://www.health.harvard.edu/Anchor Scroll To Top
https://policies.google.com/pr...New window External Subdomain Privacy Policy
https://policies.google.com/termsNew window External Subdomain Terms of Service
https://policies.google.com/pr...New window External Subdomain Text duplicate Privacy Policy
https://policies.google.com/termsNew window External Subdomain Text duplicate Terms of Service
https://policies.google.com/pr...New window External Subdomain Text duplicate Privacy Policy
https://policies.google.com/termsNew window External Subdomain Text duplicate Terms of Service

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.health.harvard.edu/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
The web server transmits the web page (HTML) in compressed form.
Performance
(Somewhat important)
The page response time is very slow (1.88 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 (256 kB).

HTTP Response Header

NameValue
dateTue, 22 Jul 2025 00:10:32 GMT
server
cache-controlno-cache, private
x-frame-optionsSAMEORIGIN
feature-policyautoplay 'none'; camera 'none'
set-cookie465 Characters
x-content-type-optionsnosniff
strict-transport-securitymax-age=63072000; includeSubdomains; preload
x-xss-protection1; mode=block
referrer-policystrict-origin-when-cross-origin
expiresTue, 22 Jul 2025 00:10:32 GMT
varyAccept-Encoding
content-encodinggzip
x-ua-compatibleIE=edge
content-typetext/html; charset=UTF-8
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 4,599 referring domains.
This page has 24,581 backlinks.
This page has backlinks from 3,059 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

User-agent: GPTBot
User-agent: Google-Extended
Disallow: /

Similar sites

Search preview

www.health.harvard.edu
Health Information and Medical Information - Harvard Health
Find the best information about living a healthier life from the trusted medical team at Harvard Medical School. Trusted advice for a healthier life.

Most important keywords

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

KeywordResultRecheck
Health97%Check
Harvard Health97%Check
Harvard96%Check
Harvard Health Publishing82%Check
Harvard Medical81%Check
Health Information81%Check
Harvard Health Online77%Check
Gut Health72%Check
Harvard Medical School71%Check
Health Content70%Check
Show more keywords and terms

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