Nei.nih.gov - SEO Checker

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Overview of the SEO Check
Meta information
77% 
Page quality
81% 
Page structure
100% 
Link structure
97% 
Server
87% 
External factors
100% 
SEO Score
Response time
2.38 s
File size
38.50 kB
Words
591
Media files
10
Number of links
73 internal / 12 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
National Eye Institute | National Eye Institute
There are word repetitions in the page title.
The length of the page title is perfect. (397 pixels out of 580 max pixel length)
Meta description
(Critically important)
The National Eye Institute (NEI) performs and supports vision research and education programs that protect and prolong vision. Learn about eye conditions, healthy eyes, vision studies, and grants for vision research.
The meta description is too long: 1326 pixels from max. 1000 pixels. Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.nei.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 alternate link to the page itself is missing.
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
descriptionThe National Eye Institute (NEI) performs and supports vision research and education programs that protect and prolong vision. Learn about eye conditions, healthy eyes, vision studies, and grants for vision research.
googlevityevxlt8UuVFWvgz9_YwmJ5F0Nby_B3t54LLh-3Zw,lACaj571Gx_VdLF3HKSKUf1Wxx0H_bWxO3BYDZ_C1uw
google-site-verificationUDfyeEAWNX_rJUHwog9j1kziEnByGwhkSJGLJclUWDA
viewportwidth=device-width, initial-scale=1.0
langen
charsetutf-8

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Page quality

Content
(Critically important)
This page contains 591 words. That's ok.
27.9% 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.
6 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 23.67 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 12 tags for this page.
Image SEO
(Somewhat important)
9 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
...s/custom/nei/images/NEI-logo-tagline.svgNo alt attribute provided
.../nei/images/circle-nav-eyeconditions.pngNo alt attribute provided
.../images/circle-nav-outreachmaterials.pngNo alt attribute provided
...nei/images/circle-nav-clinicaltrials.pngNo alt attribute provided
...es/custom/nei/images/circle-nav-news.pngNo alt attribute provided
...ChallengeGov_Graphic_a.jpg?itok=nDxMy4VBEye on the Future Contest
.../AdobeStock_179650656.jpeg?itok=PHSVczrwNo alt attribute provided
...nail/public/2025-07/RP.jpg?itok=VBsPyokzNo alt attribute provided
...7_2025_60825_Fig2_HTML.jpg?itok=QFdPkMhpNo alt attribute provided
...fault/files/2019-05/grantsAndFunding.jpgNo alt attribute provided

Page structure

H1 heading
(Critically important)
National Eye Institute
The H1 heading is perfect.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 National Eye Institute
H2 The nation's leader in vision research.
H2 Popular Eye Health Topics
H2 En español
H2 Announcing the 2025 Eye on the Future Teen Video Contest Winners
H2 NEI Research News
H2 New research uncovers link between cancer pathway and blood-retina barrier function
H2 Eye cells "rewire" themselves when vision begins to fail
H2 Connect or reject: extensive rewiring builds binocular vision in the brain
H2 Funding for Vision Research
H2 NEI Research Initiatives
H2 Contact NEI
H2 Policies
H2 For NEI Employees
Some internal link anchor texts are too long.
The number of internal links is ok.
Every linktext is unique.
All internal links are not using dynamic parameters.
There are 12 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://www.nei.nih.gov/Anchor Skip to content
https://www.nei.nih.gov/National Eye Institute Research Today… Vision Tomorrow
A-TITLE Home
https://www.nei.nih.gov/node/38English
/espanol/node/38Español
/learn-about-eye-healthLearn About Eye Health
/learn-about-eye-health/health...Healthy Vision
/learn-about-eye-health/eye-co...Eye Conditions and Diseases
/learn-about-eye-health/eye-he...Eye Health Data and Statistics
/learn-about-eye-health/campaignsCampaigns
/learn-about-eye-health/vision...Vision Rehabilitation
/learn-about-eye-health/nei-fo...NEI for Kids
/learn-about-eye-health/outrea...Outreach Resources
/grants-and-trainingGrants and Training
/grants-and-training/how-applyHow to Apply
/grants-and-training/funding-o...Funding Opportunities
/grants-and-training/training-neiTraining at NEI
/grants-and-training/funding-t...Funding for Training and Career Development
/grants-and-training/policies-...Policies and Procedures
/grants-and-training/Prior-App...Prior Approval Requests
/grants-and-training/resources...Resources for Researchers
/grants-and-training/contact-g...Contact Grants and Funding Staff
https://www.nei.nih.gov/researchResearch at NEI
/about/news-and-events/newsResearch News
A-TITLE Research News
/research/clinical-trialsClinical Trials
/research/research-labs-and-br...Research Labs and Branches
/research/jobs-and-training-op...Jobs and Training Opportunities at NEI
/research/seminarsNEI Research Seminars
https://www.nei.nih.gov/aboutAbout NEI
/about/strategic-planningStrategic Planning
/about/news-and-eventsNews and Events
/about/goals-and-accomplishmentsGoals and Accomplishments
/about/nei-historyNEI History
/about/nei-leadershipNEI Leadership
/about/budget-and-congressBudget and Congress
/about/advisory-committeesAdvisory Committees
/learn-about-eye-health/outrea...National Eye Health Education Program
A-TITLE National Eye Health Education Program
/about/donate-neiDonate to NEI
https://www.nei.nih.gov/aboutLearn more about NEI
/learn-about-eye-health/eye-co...Eye Conditions A to Z Get information about common eye conditions and diseases.
/learn-about-eye-health/resour...Outreach Materials Explore printable handouts, fact sheets, and other materials about eye health.
/research/clinical-trialsClinical Trials Learn how you can get involved in cutting-edge vision research.
/about/news-and-events/newsNEI Research News Check out the latest NEI news — including updates on NEI's current research and research that NEI funds.
/learn-about-eye-health/health...Keep Your Eyes Healthy
/learn-about-eye-health/health...Get Help Paying for Eye Care
/learn-about-eye-health/eye-co...Color Blindness
/learn-about-eye-health/eye-co...Diabetic Retinopathy
/learn-about-eye-health/health...Finding an Eye Doctor
/learn-about-eye-health/eye-co...Floaters
/learn-about-eye-health/eye-co...Retinal Detachment
/learn-about-eye-healthExplore NEI's eye health information
https://www.nei.nih.gov/espanolBusque información de salud de los ojos en español
/learn-about-eye-health/campai...Watch the winning videos
/about/news-and-events/news/ne...New research uncovers link between cancer pathway and blood-retina barrier function
/about/news-and-events/news/ey...Eye cells "rewire" themselves when vision begins to fail
/about/news-and-events/news/co...Connect or reject: extensive rewiring builds binocular vision in the brain
/about/news-and-events/newsSee more news stories
/grants-and-training/funding-o...Learn more about funding opportunities
/about/goals-and-accomplishmen...Anterior Segment Initiative
/about/goals-and-accomplishmen...Translational Research
https://eyegene.nih.gov/External Subdomain eyeGENE®
/about/goals-and-accomplishmen...International Research
/about/goals-and-accomplishmen...3-D Retina Organoid Challenge
/about/goals-and-accomplishmen...Regenerative Medicine
/about/goals-and-accomplishmen...Vision Health and Population Sciences
/about/goals-and-accomplishmen...Data Science and Health Informatics
/about/goals-and-accomplishmen...Audacious Goals Initiative
https://grants.nih.gov/funding...External Subdomain Anchor NEI Funding Opportunities
https://www.nei.nih.gov/research/Learn more about research at NEI
https://www.nei.nih.gov/National Eye Institute
A-TITLE Home
https://www.facebook.com/Natio...External Subdomain Facebook
https://x.com/NatEyeInstituteExternal X
https://www.linkedin.com/compa...External Subdomain LinkedIn
https://www.youtube.com/user/n...External Subdomain YouTube
/contact-us/Contact Us
https://www.nih.gov/about-nih/...External Subdomain Visit NIH
/accessibility-informationAccessibility
https://www.nih.gov/nondiscrim...External Subdomain Nondiscrimination Notice
/nei-website-privacy-policyPrivacy
/freedom-information-actFreedom of Information Act (FOIA)
/disclaimersDisclaimers
/web-policiesWeb Policies
https://www.hhs.gov/vulnerabil...External Subdomain Vulnerability Disclosure
https://www.nih.gov/External Subdomain NIH.gov
https://hhs.gov/External HHS.gov
https://usa.gov/External USA.gov

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.nei.nih.gov/"
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 very slow (2.38 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 (39 kB).

HTTP Response Header

NameValue
dateWed, 23 Jul 2025 10:22:44 GMT
content-typetext/html; charset=UTF-8
cache-controlmax-age=86400, public
content-encodinggzip
content-languageen
etag"1753216192-gzip"
expiresSun, 19 Nov 1978 05:00:00 GMT
last-modifiedTue, 22 Jul 2025 20:29:52 GMT
varyCookie,Accept-Encoding
x-content-type-optionsnosniff
x-powered-byPHP/8.3.22
x-drupal-dynamic-cacheHIT
x-frame-optionsSAMEORIGIN
x-generatorDrupal 10 (https://www.drupal.org)
content-security-policyreport-uri /report-csp-violation
referrer-policysame-origin
x-drupal-cacheHIT
x-azure-ref20250723T102244Z-178fcc457f4kh6qlhC1FRA8has0000000gag000000009br8
strict-transport-securitymax-age=63072000; includeSubDomains; preload
x-cacheCONFIG_NOCACHE
statuscode200
http_versionHTTP/2

External factors

This website has excellent links from other websites.
This page has backlinks from 1,218 referring domains.
This page has 17,427 backlinks.
This page has backlinks from 982 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

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

# Customizations
Disallow: /node/
Disallow: /espanol/node/
Disallow: /user/
Disallow: */search
Disallow: /update.php
Disallow: /composer*
Disallow: /deploy*
Disallow: */package.json
Disallow: */package-lock.json

sitemap: https://www.nei.nih.gov/sitemap.xml

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www.nei.nih.gov
National Eye Institute | National Eye Institute
The National Eye Institute (NEI) performs and supports vision research and education programs that protect and prolong vision. Learn about eye conditions, healthy eyes, vision studies, and grants for vision research.

Most important keywords

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

KeywordResultRecheck
Eye81%Check
National Eye79%Check
Eye Institute79%Check
National Eye Institute77%Check
National73%Check
Eye Health67%Check
Eye Conditions66%Check
National Research61%Check
Eye Doctor59%Check
Eye Disease59%Check
Show more keywords and terms

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