Stemcells.nih.gov - SEO Checker

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Overview of the SEO Check
Meta information
74% 
Page quality
46% 
Page structure
79% 
Link structure
100% 
Server
38% 
External factors
100% 
SEO Score
Response time
0.63 s
File size
34.30 kB
Words
221
Media files
7
Number of links
12 internal / 10 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Home | STEM Cell Information
The length of the page title is perfect. (275 pixels out of 580 max pixel length)
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://stemcells.nih.gov/home
The specified canonical link points to a different page.
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)
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 markup is not in the first line of your HTML document. There must be no white spaces before the doctype markup.
The doctype HTML 5 is set correctly.
Favicon
(Nice to have)
The favicon is linked correctly.

Meta tags

NameValue
GeneratorDrupal 10 (https://www.drupal.org)
MobileOptimizedwidth
HandheldFriendlytrue
viewportwidth=device-width, initial-scale=1.0
langen
charsetutf-8

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Page quality

Content
(Critically important)
There are only 221 words on this page. Use at least 250 words to provide useful information.
21.7% 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.
4 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 9.64 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
A viewport "width=device-width, initial-scale=1.0" is provided.
This page only loads 2 JavaScript files. That's good!
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 6 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
/themes/bootstrap4/img/us_flag_small.pngUS Flag Icon
/themes/bootstrap4/img/nihfavicon.pngUS Flag Icon
/themes/bootstrap4/img/icon-dot-gov.svg.GOV Icon
/themes/bootstrap4/img/icon-https.svgHTTPS Icon
...default/files/2021-02/banner-nihlogo.pngHome
/sites/default/files/2021-02/Picture1.jpgNo alt attribute provided
.../default/files/2021-02/lab-backgroun.jpgNo alt attribute provided

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H2 NIH Stem Cell Information
H4 General Information
H4 Investigator Toolbox
H5 Footer
The number of internal links is ok.
Every linktext is unique.
None of the anchor texts is too long.
All internal links are not using dynamic parameters.
There are 10 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://stemcells.nih.gov/Anchor Skip to main content
https://stemcells.nih.gov/Anchor Here's how you know
https://www.hhs.gov/New window External Subdomain U.S. Department of Health and Human Services
https://www.nih.gov/New window External Subdomain National Institutes of Health
https://grants.nih.gov/New window External Subdomain NIH Grants and Funding
IMG-ALT US Flag Icon
https://stemcells.nih.gov/IMG-ALT Home
A-TITLE Home
/info/basicsIntroduction to Stem Cells
/NIH-Stem-Cell-ResearchNIH Stem Cell Research
/clinical-trial-infoStem Cell Clinical Trials & Other Information
https://grants.nih.gov/stem_ce...New window External Subdomain NIH Human Embryonic Stem Cell Registry
https://hescregapp.od.nih.gov/...New window External Subdomain Submit an hESC line for NIH Review
/research-policy-and-faqsNIH Stem Cell Research Policy and FAQs
/contact-usContact Us
/accessibilityAccessibility
/privacy-statementPrivacy Statement
/disclaimerDisclaimer
https://web.archive.org/web/*/...External Subdomain Older Versions of this Page
/clinical-trial-infoClinical Trial
https://www.hhs.gov/New window External Subdomain U.S. Department of Health & Human Services (HHS)
https://usa.gov/New window External USA.gov - Government Made Easy
https://www.hhs.gov/vulnerabil...New window External Subdomain HHS Vulnerability Disclosure
https://www.nih.gov/New window External Subdomain National Institutes of Health (NIH)

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://stemcells.nih.gov/"
HTTP header
(Important)
The web server version is sent within the HTTP header.
The X-powered header is sent within the response header. (unnecessary)
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
The page response time of 0.63 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 46 CSS files. This may affect the page load time negatively.
This page only loads 2 JavaScript files. That's good!
The file size of the HTML document is fine (34 kB).

HTTP Response Header

NameValue
cache-controlmust-revalidate, no-cache, private
content-typetext/html; charset=UTF-8
content-encodinggzip
content-languageen
expiresSun, 19 Nov 1978 05:00:00 GMT
varyAccept-Encoding
serverMicrosoft-IIS/10.0
x-drupal-dynamic-cacheHIT
x-content-type-optionsnosniff
x-frame-optionsSAMEORIGIN
x-generatorDrupal 10 (https://www.drupal.org)
x-drupal-cacheHIT
x-powered-byASP.NET
content-security-policyupgrade-insecure-requests
strict-transport-securitymax-age=31536000
dateThu, 09 May 2024 17:05:35 GMT
content-length9569
statuscode200
http_versionHTTP/1.1

External factors

Blacklists
(Nice to have)
This website is not classified "for adult only".
This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 3,867 referring domains.
This page has 137,430 backlinks.
This page has backlinks from 1,953 different ip addresses.
Facebook popularity
(Somewhat important)
The page has 0 shares and comments on Facebook.

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

Similar sites

Search preview

stemcells.nih.gov
Home | STEM Cell Information

Most important keywords

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

KeywordResultRecheck
Stem62%Check
Cell62%Check
Stem Cell62%Check
Stem Cell Information61%Check
NIH Stem Cell58%Check
NIH Stem Cell Information58%Check
information54%Check
gov54%Check
stem cells54%Check
NIH52%Check
Show more keywords and terms

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