Atsdr.cdc.gov - SEO Checker

Overview of the SEO Check
Meta information
75% 
Page quality
86% 
Page structure
79% 
Link structure
40% 
Server
18% 
External factors
100% 
SEO Score
Response time
1.45 s
File size
146.90 kB
Words
758
Media files
11
Number of links
81 internal / 40 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
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
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.
keywordsAgency for Toxic Substances and Disease Registry, ATSDR, Toxic Substances, TSP, PHA, Emergency Response, Toxic Substances
robotsindex, archive
DC.date2020-12-16T10:22:44Z
cdc:last_published2020-12-16T22:24:06Z
cdc:template_version4.0
cdc:last_updatedDecember 16, 2020
cdc:last_reviewedDecember 16, 2020
cdc:content_sourceAGENCY FOR TOXIC SUBSTANCES AND DISEASE REGISTRY
cdc:maintained_byAGENCY FOR TOXIC SUBSTANCES AND DISEASE REGISTRY
cdc:content_id75997
cdc:wcms_build4.9.9.1 - b.2927
langen-us
X-UA-CompatibleIE=Edge
charsetutf-8

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Page quality

Content
(Critically important)
This page contains 758 words. That's ok.
22.4% 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 19.56 words is good.
Frames
(Critically important)
This website does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
This website loads 9 javascript files. This may affect the load time negatively.
A viewport "width=device-width, initial-scale=1, shrink-to-fit=no" is provided.
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.

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
H4 Exit Notification/Disclaimer Policy
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 amount of internal links is ok.
There are too many external links (40) on this page.
LinkAttributesAnchor text
https://www.atsdr.cdc.gov/Anchor Skip directly to site content
https://www.atsdr.cdc.gov/Anchor Skip directly to page options
https://www.atsdr.cdc.gov/Anchor Skip directly to A-Z link
/es/index.htmlEspañol
https://www.atsdr.cdc.gov/Agency for Toxic Substance and Disease Registration Agency for Toxic Substance and Disease Registration
/az/a.htmlA-Z Index
https://search.cdc.gov/search/...External Anchor Advanced Search
https://search.cdc.gov/search/...External Anchor Text duplicate Advanced Search
/index.htmlAgency for Toxic Substances and Disease Registry
https://www.cdc.gov/External CDC Home
https://api.addthis.com/oexcha...New window External Subdomain Facebook
https://api.addthis.com/oexcha...New window External Subdomain Twitter
https://api.addthis.com/oexcha...New window External Subdomain LinkedIn
https://tools.cdc.gov/medialib...New window External Anchor Syndicate
https://www.atsdr.cdc.gov/Anchor Minus
/features/atsdr/index.htmlATSDR Stories from the Field Learn about an online tool that can help support communication and data collection during a disaster response.
IMG-ALT ATSDR
/environmentaleducation.htmlATSDR’s Environmental Health and Medicine Education Learn more about ATSDR’s Environmental Health and Medicine Education.
IMG-ALT National Health Education Week
/features/alsregistryanniversa...The National ALS Registry The National ALS Registry provides hope for patients and data for researchers.
IMG-ALT ALS National Registry
/safeplacesforece/infographic/...New Choose Safe Places Infographic Learn how to identify potential environmental hazards and exposure routes at a childcare facility.
IMG-ALT Choose Safe Places Infographic
/ToxProfiles/tp.asp?id=734&tid...Draft Tox Profile for Ethylene Oxide Now Available Public comment period ends December 29, 2020.
IMG-ALT Ethylene Oxide spotlight
/substances/index.asplab icon Toxic Substances Portal One-stop-shop on the health effects of toxic substances
/HAC/PHA/index.aspbook icon Public Health Assessments and Health Consultations Evaluations to find out if people are being exposed to hazardous substances
/toxprofiledocs/index.htmlbook icon Toxicological Profiles Comprehensive evaluation of toxicological information on a substance
/states/index.htmlmap icon State Cooperative Program The Program funds 28 partner organizations to build their ability to respond to environmental issues
/substances/toxsubstance.asp?t...Lead
/substances/toxsubstance.asp?t...Arsenic
/substances/toxsubstance.asp?t...Aluminum
/substances/toxsubstance.asp?t...Benzene
/substances/toxsubstance.asp?t...Cadmium
/news/index.aspPress Release
/news/displaynews.asp?PRid=2691CDC and ATSDR will resume PFAS exposure assessment field activities in Orange County, New York
/emergencyresponse/index.htmlEmergency Response
/emergencyresponse/index.htmlInformation for Emergency Responders, Healthcare Professionals, and Public Health Partners
/publications.htmlPublications
https://www.cdc.gov/budget/doc...External ATSDR Congressional Justification FY 2016 pdf icon[PDF – 955KB]
/environmentaleducation.htmlEducation & Training
/environmentaleducation.htmlATSDR Environmental Health Education for Medical Providers, Health Assessors, and the Public
/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
/es/index.htmlATSDR en Español
/communications-toolkit/index....ATSDR Communication Toolkit
/sites/brownfields/Brownfield/Land Reuse Initiative
/sites/lejeune/index.htmlCamp Lejeune, North Carolina
/csem/csem.htmlCase Studies in Environmental Medicine
/pfas/index.htmlCDC/ATSDR PFAS Related Activities
/safeplacesforECE/index.htmlChoose Safe Places for Early Care and Education (CSPECE)
/interactionprofiles/index.aspInteraction Profiles
/minimalrisklevels/index.htmlMinimal Risk Levels
https://www.cdc.gov/nceh/multi...External Multimedia Tools
https://www.cdc.gov/als/External National Amyotrophic Lateral Sclerosis (ALS) Registry
https://www.cdc.gov/nceh/External National Center for Environmental Health
https://www.cdc.gov/nceh/socia...External Social Media
/soilshop/index.htmlsoilSHOP Toolkit
https://www.atsdr.cdc.gov/SPL/Substance Priority List
/toxfaqs/index.aspToxFAQs™
/videos/dangerous_discovery.htmlATSDR in 60-seconds
/2019atsdrannualreport/index.html2019 ATSDR Annual Report
/about/mission_vision_goals.htmlVision, Mission, and Impact Statements
https://www.cdc.gov/nceh/infor...External NCEH/ATSDR Org Chart pdf icon[PDF - 97 KB]
/dro/index.htmlRegional Offices
/features/index.htmlEnvironmental Health Features
https://blogs.cdc.gov/yourheal...External Your Health – Your Environment Blog
https://blogs.cdc.gov/yourheal...External IMG-ALT Children’s Health Month – October 2020
https://blogs.cdc.gov/yourheal...External Text duplicate Children’s Health Month – October 2020
https://blogs.cdc.gov/yourheal...External Trivial anchor text
Read More
https://www.cdc.gov/emailupdates/External What's this?
https://www.atsdr.cdc.gov/Text duplicate Agency for Toxic Substances and Disease Registry
/index.htmlATSDR Home
/about/index.htmlAbout ATSDR
https://www.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
/science/index.htmlBoard of Scientific Counselors
/DRO/index.htmlText duplicate Regional Offices
/es/index.htmlText duplicate ATSDR en Español
/az/a.htmlText duplicate A-Z Index
/features/index.htmlText duplicate Environmental Health Features
http://www.cdc.gov/nceh/multim...External Text duplicate Multimedia Tools
/specialinitiatives.htmlSpecial Initiatives
/publications.htmlText duplicate Publications
https://www.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
/environmentaleducation.htmlEducation and Training
/publications_risk_comm.htmlRisk Communication
/publications_monitoring_testi...Monitoring and Testing
/publications_community_involv...Community Involvement
/publications_data_resources.htmlData Resources
/contacts.htmlContact Information
https://wwwn.cdc.gov/dcs/Reque...External Email CDC-INFO
/about/index.htmlAbout CDC / ATSDR
https://jobs.cdc.gov/External Jobs
/funding.htmlFunding
/privacy.htmlText duplicate Policies
https://www.cdc.gov/other/plug...External File Viewers & Players
/privacy.htmlPrivacy
https://www.cdc.gov/od/foiaExternal FOIA
https://www.cdc.gov/eeo/nofear...External No Fear Act
https://oig.hhs.gov/External OIG
https://www.cdc.gov/other/nond...External Nondiscrimination
https://www.facebook.com/CDCNew window External Text duplicate Facebook
https://twitter.com/CDCgovNew window External Text duplicate Twitter
https://www.youtube.com/user/C...New window External Youtube
https://www.instagram.com/CDCgov/New window External Instagram
https://www.cdc.gov/cdctvExternal CDC TV
https://tools.cdc.gov/podcasts...External RSS
https://wwwn.cdc.gov/dcs/Reque...External Email
https://www.hhs.gov/External U.S. Department of Health & Human Services
https://www.usa.gov/External USA.gov
https://www.cdc.gov/Other/disc...External CDC Website Exit Disclaimer
https://api.addthis.com/oexcha...New window External Subdomain Text duplicate Facebook
https://api.addthis.com/oexcha...New window External Subdomain Text duplicate Twitter
https://api.addthis.com/oexcha...New window External Subdomain Text duplicate LinkedIn
https://www.cdc.gov/Other/disc...External Website Disclaimers

Server configuration

HTTP redirects
(Critically important)
This website redirects to "https://www.atsdr.cdc.gov/"
HTTP header
(Important)
The HTML page should be transferred using GZip compression.
No X-Powered HTTP header is sent.
Performance
(Somewhat important)
The page response time is slow (1.45 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.
This website loads 9 javascript files. This may affect the load time negatively.
This website only loads 1 CSS files. That's ok.
The file size of the HTML document is fine (147 kB).

HTTP Response Header

NameValue
content-typetext/html
strict-transport-securitymax-age=31536000
dateSat, 26 Dec 2020 17:21:54 GMT
content-length150439
set-cookie152 Characters
statuscode200
http_versionHTTP/1.1

External factors

Blacklists
(Critically important)
This website is not classified "for adult only".
Shallalist classifies this website as News. This classification is fine.
This website has excellent links from other websites.
This website has backlinks from 89 referring domains.
This website has 225 backlinks.
This website has backlinks from 87 different ip addresses.
Facebook popularity
(Somewhat important)
This website is not very popular on facebook.
Listed on Webwiki
(Nice to have)
This website is listed on Webwiki.

Links from Wikipedia

No links from Wikipedia were found.

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

Facebook popularity

Shares / Likes / Comments
0

Only the data for the given URL is shown. We cannot determine the social actions for a linked fan page.

Search preview

www.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
Toxic Substance78%Check
Substances78%Check
Toxic78%Check
Substances and Disease78%Check
Agency78%Check
Disease78%Check
Toxic Substances78%Check
ATSDR66%Check

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