Atsdr.cdc.gov - SEO Checker

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Overview of the SEO Check
Meta information
75% 
Page quality
94% 
Page structure
79% 
Link structure
63% 
Server
20% 
External factors
100% 
SEO Score
Response time
0.95 s
File size
151.80 kB
Words
729
Media files
14
Number of links
74 internal / 88 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Agency for Toxic Substances and Disease Registry
The length of the page title is perfect. (459 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
The Agency for Toxic Substances and Disease Registry (ATSDR), based in Atlanta, Georgia, is a federal public health agency of the U.S. Department of Health and Human Services. ATSDR serves the public by using the best science, taking responsive public health actions, and providing trusted health information to prevent harmful exposures and diseases related to toxic substances.
The meta description is too long: 2375 pixels from max. 1000 pixels. Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.atsdr.cdc.gov/index.html
The specified canonical link points to a different page.
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 character encoding is not specified in the HTTP header.
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, shrink-to-fit=no
mobile-web-app-capableyes
apple-mobile-web-app-capableyes
theme-color#075290
descriptionThe Agency for Toxic Substances and Disease Registry (ATSDR), based in Atlanta, Georgia, is a federal public health agency of the U.S. Department of Health and Human Services. ATSDR serves the public by using the best science, taking responsive public health actions, and providing trusted health information to prevent harmful exposures and diseases related to toxic substances.
robotsindex, archive
DC.date2024-07-24T03:29:13Z
cdc:last_published2024-07-24T15:38:34Z
cdc:template_version4.0
cdc:first_publishedFebruary 6, 2018
cdc:last_updatedJuly 24, 2024
cdc:last_reviewedJuly 24, 2024
cdc:content_sourceAGENCY FOR TOXIC SUBSTANCES AND DISEASE REGISTRY
cdc:maintained_byAGENCY FOR TOXIC SUBSTANCES AND DISEASE REGISTRY
cdc:content_id75997
cdc:build3793
cdc:version4.24.6
cdc:page_typecdc_page
cdc:page_originwcms
cdc:wcms_build4.24.6 - b.3793
langen-us
X-UA-CompatibleIE=Edge
charsetutf-8

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Page quality

Content
(Critically important)
This page contains 729 words. That's ok.
23.6% 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.
4 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 20.75 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, shrink-to-fit=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 15 tags for this page.
Image SEO
(Somewhat important)
Alt text (alternative text) is correctly used on all found images.
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
/images/spotlights/HHI-spotlight.jpgHeat & Health Index
/images/spotlights/SVI-spotlight.jpgWoman writing in notebook
...spotlights/toxprofile_spotlight-2024.jpgtoxprofiles
...s/spotlights/als-registry-Brad-Dusek.jpgPhoto of registry member Ron Kettles and his healthcare provider Richard Bedlack
...es/spotlights/ALS-Biorepository-2024.jpgfemale chemist pipetting liquid into sample vials
/images/Hazard-sign-photo-small.jpg?_=66768Hazard Sign
...edu_training_photo-thumbnail.jpg?_=04760Education
.../publication_photo-thumbnail.jpg?_=04731publications
...ress_release_photo-thumbnail.jpg?_=04772Press Release
/images/AZ-index-large.jpg?_=75375AZ-index
...s/pouring-water-from-pitcher.jpg?_=70387Drink Water. Woman's Hand Pouring Water From Pitcher Into Glass
...book/images/ceplaybook-small.jpg?_=20865CE Playbook Cover
/images/blog/co-poisoning-blog.jpg?_=85338Carbon Monoxide (CO) Poisoning. Can’t be seen. Can’t be smelled. Can’t be heard. Can be stopped.Carbon Monoxide Poisoning Can be Deadly

Page structure

H1 heading
(Critically important)
Agency for Toxic Substances and Disease Registry
The H1 heading is perfect.
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H1 Agency for Toxic Substances and Disease Registry
H4 Environmental Health Features
Some internal link anchor texts are too long.
Some anchor texts are used more than once.
The number of internal links is ok.
All internal links are not using dynamic parameters.
There are too many external links (88) on this page.

Found links on this page

LinkAttributesAnchor text
https://atsdr.cdc.gov/Anchor Skip directly to site content
https://atsdr.cdc.gov/Anchor Skip directly to search
/es/index.htmlSubdomain Español
https://www.atsdr.cdc.gov/Subdomain Agency for Toxic Substance and Disease Registration Agency for Toxic Substance and Disease Registration
/az/a.htmlSubdomain A-Z Index
https://search.cdc.gov/search/...External Subdomain Anchor Advanced Search
https://search.cdc.gov/search/...External Subdomain Anchor Text duplicate Advanced Search
https://atsdr.cdc.gov/index.htmlAgency for Toxic Substances and Disease Registry
https://atsdr.cdc.gov/Anchor Print
https://atsdr.cdc.gov/Anchor No Text
https://ephtracking.cdc.gov/Ap...External Subdomain Anchor CDC/ATSDR & HHS Launches Heat & Health Index (HHI) Discover how the HHI can help communities better prepare for heat events.
IMG-ALT Heat & Health Index
/placeandhealth/svi/data_docum...New CDC/ATSDR Social Vulnerability Index 2022 Dataset Help communities prepare for, respond to, and recover from public health crises.
IMG-ALT Woman writing in notebook
/toxprofiledocs/index.htmlToxicological Profiles 3 Draft Tox Profiles are now available for public comment.
IMG-ALT toxprofiles
/features/ALSRegistry/index.htmlMay is ALS Awareness Month Learn more about how we can all fight ALS together.
IMG-ALT Photo of registry member Ron Kettles and his healthcare provider Richard Bedlack
/features/als-biorepository/in...National ALS Biorepository Learn how the ALS Biorepository is used in the fight to identify the causes of ALS.
IMG-ALT female chemist pipetting liquid into sample vials
https://www.youtube.com/redire...External Subdomain Low Resolution Video
https://wwwn.cdc.gov/TSP/index...External Subdomain Toxic Substances Portal One-stop-shop on the health effects of toxic substances
https://wwwn.cdc.gov/TSP/PHA/P...External Subdomain Public Health Assessments and Health Consultations Evaluations to find out if people are being exposed to hazardous substances
/toxprofiledocs/index.htmlSubdomain Toxicological Profiles Comprehensive evaluation of toxicological information on a substance
/states/index.htmlSubdomain State Cooperative Program The Program funds 30 partner organizations to build their ability to respond to environmental issues
https://wwwn.cdc.gov/TSP/subst...External Subdomain Lead
https://wwwn.cdc.gov/TSP/subst...External Subdomain Arsenic
https://wwwn.cdc.gov/TSP/subst...External Subdomain Aluminum
https://wwwn.cdc.gov/TSP/subst...External Subdomain Benzene
https://wwwn.cdc.gov/TSP/subst...External Subdomain Cadmium
/emergencyresponse/index.htmlEmergency Response
/emergencyresponse/index.htmlInformation for Emergency Responders, Healthcare Professionals, and Public Health Partners
/environmentaleducation.htmlSubdomain Education & Training
/environmentaleducation.htmlSubdomain ATSDR Environmental Health Education for Medical Providers, Health Assessors, and the Public
/publications.htmlPublications
https://www.cdc.gov/budget/doc...New window External Subdomain ATSDR Congressional Justification FY24
https://wwwn.cdc.gov/TSP/NEWS/...External Subdomain Press Release
https://wwwn.cdc.gov/TSP/NEWS/...External Subdomain Ethylene Oxide (EtO) Exposure Report Released for Public Comment
https://atsdr.cdc.gov/az/a.htmlIMG-ALT AZ-index
https://atsdr.cdc.gov/az/a.htmlATSDR A-Z Index
/pfas/index.htmlIMG-ALT Drink Water. Woman's Hand Pouring Water From Pitcher Into Glass
/pfas/index.htmlPer- and Polyfluoroalkyl Substances (PFAS) and Your Health
/ceplaybook/index.htmlIMG-ALT CE Playbook Cover
/ceplaybook/index.htmlATSDR’s new Community Engagement Playbook
/es/index.htmlSubdomain ATSDR en Español
/communications-toolkit/index....Subdomain ATSDR Communication Toolkit
/sites/brownfields/Subdomain Brownfield/Land Reuse Initiative
/sites/lejeune/index.htmlSubdomain Camp Lejeune, North Carolina
/csem/csem.htmlSubdomain Case Studies in Environmental Medicine
/pfas/index.htmlSubdomain CDC/ATSDR PFAS Related Activities
/safeplacesforECE/index.htmlSubdomain Choose Safe Places for Early Care and Education (CSPECE)
/interactionprofiles/index.htmlSubdomain Interaction Profiles
/minimalrisklevels/index.htmlSubdomain Minimal Risk Levels
https://www.cdc.gov/nceh/multi...External Subdomain Multimedia Tools
https://www.cdc.gov/als/External Subdomain National Amyotrophic Lateral Sclerosis (ALS) Registry
https://www.cdc.gov/nceh/External Subdomain National Center for Environmental Health
https://www.cdc.gov/nceh/socia...External Subdomain Social Media
/soilshop/index.htmlSubdomain soilSHOP Toolkit
https://www.atsdr.cdc.gov/SPL/Subdomain Substance Priority List
https://wwwn.cdc.gov/TSP/ToxFA...External Subdomain ToxFAQs™
/docs/Across_the_US_ATSDR_Fact...New window Across the US Fact Sheet [PDF - 1.3 MB]
/videos/dangerous_discovery.htmlSubdomain ATSDR in 60-seconds
/about/mission_vision_goals.htmlSubdomain Vision, Mission, and Impact Statements
https://www.cdc.gov/about/pdf/...New window External Subdomain ATSDR Org Chart [PDF - 24 KB]
/dro/index.htmlSubdomain Regional Offices
/features/index.htmlEnvironmental Health Features
https://blogs.cdc.gov/yourheal...External Subdomain Your Health – Your Environment Blog
https://blogs.cdc.gov/yourheal...External Subdomain IMG-ALT Carbon Monoxide (CO) Poisoning. Can’t be seen. Can’t be smelled. Can’t be heard. Can be stopped.
https://blogs.cdc.gov/yourheal...External Subdomain Carbon Monoxide Poisoning Can be Deadly
https://www.cdc.gov/disasters/...External Subdomain power outages
https://www.cdc.gov/disasters/...External Subdomain heat their homes
https://blogs.cdc.gov/yourheal...External Subdomain Trivial anchor text
Read More
https://www.cdc.gov/emailupdates/External Subdomain What's this?
https://www.atsdr.cdc.gov/Subdomain Text duplicate Agency for Toxic Substances and Disease Registry
https://api.addthis.com/oexcha...New window External Subdomain Facebook
A-TITLE Share to Facebook
https://api.addthis.com/oexcha...New window External Subdomain Twitter
A-TITLE Share to Twitter
https://api.addthis.com/oexcha...New window External Subdomain LinkedIn
A-TITLE Share to LinkedIn
https://tools.cdc.gov/medialib...New window External Subdomain Anchor Syndicate
A-TITLE Embed this Page
https://atsdr.cdc.gov/index.htmlATSDR Home
/about/index.htmlAbout ATSDR
https://atsdr.cdc.gov/Anchor plus icon
/about/mission_vision_goals.htmlMission, Vision, and Impact
/about/orgstruct.htmlOrganizational Summary
/stories/index.htmlSharing Our Stories: ATSDR’s Impact on Public Health
/about/atsdrpolicies.htmlPolicies
/about/congress.htmlCongressional Mandate
/DRO/index.htmlText duplicate Regional Offices
/es/index.htmlSubdomain Text duplicate ATSDR en Español
https://atsdr.cdc.gov/az/a.htmlText duplicate A-Z Index
/environmentaleducation.htmlEducation and Training
/features/index.htmlText duplicate Environmental Health Features
https://www.cdc.gov/nceh/multi...External Subdomain Text duplicate Multimedia Tools
/publications.htmlText duplicate Publications
https://atsdr.cdc.gov/Anchor Text duplicate plus icon
/factsheets.htmlFact Sheets
/publications_sites.htmlSites
/toxicsubstances.htmlToxic Substances
/publications_health_registrie...Health Registries
/emergencyresponse/index.htmlText duplicate Emergency Response
/publications_HAC.htmlHealth Assessments and Consultations
/publications_risk_comm.htmlRisk Communication
/publications_monitoring_testi...Monitoring and Testing
/publications_community_involv...Community Involvement
/publications_data_resources.htmlData Resources
/about/index.htmlSubdomain About CDC / ATSDR
/contacts.htmlSubdomain Contact Us
https://www.facebook.com/CDCNew window External Subdomain Text duplicate Facebook
https://twitter.com/CDCEnviron...New window External Text duplicate Twitter
https://www.instagram.com/CDCgov/New window External Subdomain Instagram
https://www.linkedin.com/compa...New window External Subdomain Text duplicate LinkedIn
https://www.youtube.com/c/cdc/New window External Subdomain Youtube
https://www.pinterest.com/cdcgov/New window External Subdomain Pinterest
https://www.snapchat.com/add/c...New window External Subdomain Snapchat
/contacts.htmlSubdomain Contact Information
https://www.cdc.gov/cdc-info/i...External Subdomain Visit CDC-INFO
https://www.cdc.gov/cdc-info/i...External Subdomain Email CDC-INFO
/about/index.htmlSubdomain Text duplicate About CDC / ATSDR
https://jobs.cdc.gov/External Subdomain Jobs
/funding.htmlSubdomain Funding
/privacy.htmlSubdomain Text duplicate Policies
https://www.cdc.gov/other/plug...External Subdomain File Viewers & Players
https://wwwn.cdc.gov/pubs/othe...External Subdomain Other Languages
/privacy.htmlSubdomain Privacy
https://www.cdc.gov/od/foiaExternal Subdomain FOIA
https://www.cdc.gov/oeeowe/nof...External Subdomain No Fear Act
https://oig.hhs.gov/External Subdomain OIG
https://www.cdc.gov/other/nond...External Subdomain Nondiscrimination
https://www.cdc.gov/other/acce...External Subdomain Accessibility
https://www.hhs.gov/vulnerabil...External Subdomain Vulnerability Disclosure Policy
https://www.hhs.gov/es/vulnera...External Subdomain Text duplicate Español
https://www.cdc.gov/Other/disc...External Subdomain CDC Website Exit Disclaimer
https://www.facebook.com/CDCNew window External Subdomain Text duplicate Facebook
https://twitter.com/CDCEnviron...New window External Text duplicate Twitter
https://www.instagram.com/CDCgov/New window External Subdomain Text duplicate Instagram
https://www.linkedin.com/compa...New window External Subdomain Text duplicate LinkedIn
https://www.youtube.com/c/cdc/New window External Subdomain Text duplicate Youtube
https://www.pinterest.com/cdcgov/New window External Subdomain Text duplicate Pinterest
https://www.snapchat.com/add/c...New window External Subdomain Text duplicate Snapchat
https://wwwn.cdc.gov/dcs/Reque...External Subdomain Email
https://www.cdc.gov/other/lang...External Subdomain Anchor Text duplicate Español
A-TITLE Spanish
https://www.cdc.gov/other/lang...External Subdomain Anchor 繁體中文
A-TITLE Chinese
https://www.cdc.gov/other/lang...External Subdomain Anchor Tiếng Việt
A-TITLE Vietnamese
https://www.cdc.gov/other/lang...External Subdomain Anchor 한국어
A-TITLE Korean
https://www.cdc.gov/other/lang...External Subdomain Anchor Tagalog
A-TITLE Tagalog
https://www.cdc.gov/other/lang...External Subdomain Anchor Русский
A-TITLE Russian
https://www.cdc.gov/other/lang...External Subdomain Anchor العربية
A-TITLE Arabic
https://www.cdc.gov/other/lang...External Subdomain Anchor Kreyòl Ayisyen
A-TITLE Haitian
https://www.cdc.gov/other/lang...External Subdomain Anchor Français
A-TITLE French
https://www.cdc.gov/other/lang...External Subdomain Anchor Polski
A-TITLE Polish
https://www.cdc.gov/other/lang...External Subdomain Anchor Português
A-TITLE Portuguese
https://www.cdc.gov/other/lang...External Subdomain Anchor Italiano
A-TITLE Italian
https://www.cdc.gov/other/lang...External Subdomain Anchor Deutsch
A-TITLE German
https://www.cdc.gov/other/lang...External Subdomain Anchor 日本語
A-TITLE Japanese
https://www.cdc.gov/other/lang...External Subdomain Anchor فارسی
A-TITLE Farsi
https://www.cdc.gov/other/lang...External Subdomain Anchor English
A-TITLE English
https://www.hhs.gov/External Subdomain U.S. Department of Health & Human Services
https://www.cdc.gov/other/acce...External Subdomain Text duplicate Accessibility
https://www.cdc.gov/Other/disc...External Subdomain External Links
https://www.cdc.gov/other/priv...External Subdomain Text duplicate Privacy
https://www.cdc.gov/Other/poli...External Subdomain Text duplicate Policies
https://www.cdc.gov/oeeowe/nof...External Subdomain Text duplicate No Fear Act
https://www.cdc.gov/od/foiaExternal Subdomain Text duplicate FOIA
https://www.cdc.gov/other/nond...External Subdomain Text duplicate Nondiscrimination
https://oig.hhs.gov/External Subdomain Text duplicate OIG
https://www.hhs.gov/vulnerabil...External Subdomain Text duplicate Vulnerability Disclosure Policy
https://stacks.cdc.gov/External Subdomain Public Health Publications
https://www.usa.gov/External Subdomain USA.gov

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://atsdr.cdc.gov/"
HTTP header
(Important)
The HTML page should be transferred using GZip compression.
The X-powered header is sent within the response header. (unnecessary)
Performance
(Somewhat important)
The page response time of 0.95 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.
The file size of the HTML document is fine (152 kB).

HTTP Response Header

NameValue
dateWed, 04 Sep 2024 09:41:30 GMT
content-typetext/html
content-length155483
x-powered-byASP.NET
strict-transport-securitymax-age=31536000
access-control-allow-origin*
access-control-allow-headersAccess-Control-Allow-Headers, Origin, Accept, X-Requested-With, Content-Type, Access-Control-Request-Method, Access-Control-Request-Headers
x-azure-ref20240904T094130Z-r19c76bc86bmjlst1yuzbx12ug00000007700000000046gk
x-cacheCONFIG_NOCACHE
accept-rangesbytes
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 167 referring domains.
This page has 379 backlinks.
This page has backlinks from 141 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

# robots.txt for http://www.atsdr.cdc.gov/

User-agent: *
Disallow: /cgi-bin/        # Executables only
Disallow: /usage/          # Usage statistics pages only
Disallow: /jobs/           # Job postings - short expiration
Disallow: /gsql/           # This is an infinite database query space
Disallow: /CHEM/           # .gif and .xyz chemical files only

Similar sites

Search preview

atsdr.cdc.gov
Agency for Toxic Substances and Disease Registry
The Agency for Toxic Substances and Disease Registry (ATSDR), based in Atlanta, Georgia, is a federal public health agency of the U.S. Department of Health and Human Services. ATSDR serves the public by using the best science, taking responsive public health actions, and providing trusted health information to prevent harmful exposures and diseases related to toxic substances.

Most important keywords

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

KeywordResultRecheck
Registry81%Check
Disease Registry80%Check
Substances78%Check
Toxic78%Check
Agency78%Check
Disease78%Check
Toxic Substances78%Check
ATSDR62%Check
federal public health agency57%Check
Health56%Check
Show more keywords and terms

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