Epa.gov - SEO Checker

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Overview of the SEO Check
Meta information
66% 
Page quality
88% 
Page structure
100% 
Link structure
98% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.06 s
File size
61.30 kB
Words
564
Media files
10
Number of links
80 internal / 12 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Computational Toxicology and Exposure Online Resources | US EPA
The page title should be shorter than 580 pixels. It is 616 pixels long. Optimize title
There are no duplicate words in the title
Meta description
(Critically important)
EPA's Safer Chemicals program produces a variety of computational tools to assist users in decision-making, researching, and evaluating chemical information. These tools offer a wealth of chemistry, toxicity, and exposure data that is publicly accessible.
The meta description is too long: 1560 pixels from max. 1000 pixels. Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.epa.gov/comptox-tools
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)
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
descriptionEPA's Safer Chemicals program produces a variety of computational tools to assist users in decision-making, researching, and evaluating chemical information. These tools offer a wealth of chemistry, toxicity, and exposure data that is publicly accessible.
keywordscomptox, tools, computational toxicology, exposure, chemistry; computational toxicology
MobileOptimizedwidth
HandheldFriendlytrue
viewportwidth=device-width, initial-scale=1.0
msapplication-TileColor#FFFFFF
msapplication-TileImage/themes/epa_theme/images/favicon-144.png
application-nameEmpty
msapplication-config/themes/epa_theme/images/ieconfig.xml
DC.titleComputational Toxicology and Exposure Online Resources
DC.descriptionEPA's Safer Chemicals program produces a variety of computational tools to assist users in decision-making, researching, and evaluating chemical information. These tools offer a wealth of chemistry, toxicity, and exposure data that is publicly accessible.
DC.Subject.epachannelScience & Technology
DC.typeCollections and Lists
DC.date.created2023-04-11
DC.date.modified2024-07-10
DC.date.reviewed2024-10-08
DC.creatorUS EPA,ORD
DC.languageen
WebAreaComputational Toxicology and Exposure Online Resources
ContentTypeWeb Area Homepage
NavigationStylesidebar_navigation
article:published_time2023-04-11T18:26:37-04:00
article:modified_time2024-07-10
langen
twitter:cardsummary_large_image
twitter:titleComputational Toxicology and Exposure Online Resources | US EPA
twitter:descriptionEPA's Safer Chemicals program produces a variety of computational tools to assist users in decision-making, researching, and evaluating chemical information. These tools offer a wealth of chemistry, toxicity, and exposure data that is publicly accessible.
twitter:urlhttps://www.epa.gov/comptox-tools
twitter:image:altU.S. Environmental Protection Agency
twitter:imagehttps://www.epa.gov/sites/all/themes/epa/img/epa-standard-twitter.jpg
twitter:image:height600
twitter:image:width1200
og:site_nameUS EPA
og:typeWeb Area Homepage
og:urlhttps://www.epa.gov/comptox-tools
og:titleComputational Toxicology and Exposure Online Resources | US EPA
og:descriptionEPA's Safer Chemicals program produces a variety of computational tools to assist users in decision-making, researching, and evaluating chemical information. These tools offer a wealth of chemistry, toxicity, and exposure data that is publicly accessible.
og:imagehttps://www.epa.gov/sites/all/themes/epa/img/epa-standard-og.jpg
og:image:width1200
og:image:height630
og:image:altU.S. Environmental Protection Agency
og:updated_time2024-07-10
og:country_nameUnited States of America
x-ua-compatibleie=edge
charsetutf-8

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Page quality

Content
(Critically important)
This page contains 564 words. That's ok.
23% 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.
13 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 15 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 11 tags for this page.
Image SEO
(Somewhat important)
4 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/epa_theme/images/us_flag_small.pngU.S. flag
/themes/epa_theme/images/icon-dot-gov.svgDot gov
/themes/epa_theme/images/icon-https.svgHTTPS
...oldProducts.jpg?h=aa28cc4d&itok=HcFPfm_yNo alt attribute provided
...s-598129816.jpg?h=119335f7&itok=vBHK0P4iImage of pipette and chemical testing tube with chemical figures written in background and a corner of the periodic table also showing.
...l science 2.jpg?h=62bc044e&itok=STHhKbvxNo alt attribute provided
...s-828298426.jpg?h=119335f7&itok=rZTkM7P0pink, blue and purple graphic displaying chemical names
...COTOX-100_0.jpg?h=7a6e80fd&itok=JEPn5WQjNo alt attribute provided
...board 3-100.jpg?h=7a6e80fd&itok=4oknvvdmNo alt attribute provided
/themes/epa_theme/images/epa-seal.svgUnited States Environmental Protection Agency

Page structure

H1 heading
(Critically important)
Computational Toxicology and Exposure Online Resources
The H1 heading is perfect.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 Computational Toxicology and Exposure Online Resources
H2 NAMs Conference Registration Now Open!
H2 Get Help from the Experts
H2 ChemExpo Knowledgebase
H2 Cheminformatics Modules
H2 CompTox Chemicals Dashboard
H2 GenRA Tool
H2 ECOTOX Knowledgebase
H2 SeqAPASS Tool
H2 Computational Toxicology and Exposure Informatics Resources
H2 Discover.
H2 Connect.
H2 Ask.
H2 Follow.
Some anchor texts are used more than once.
The number of internal links is ok.
None of the anchor texts is too long.
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.epa.gov/comptox-toolsAnchor Skip to main content
https://www.epa.gov/A-TITLE Home
/environmental-topicsEnvironmental Topics
/environmental-topics/air-topicsAir
https://www.epa.gov/bedbugsBed Bugs
/environmental-topics/epa-effo...Cancer
/environmental-topics/chemical...Chemicals, Toxics, and Pesticide
/climate-changeClimate Change
/emergency-responseEmergency Response
/environmental-topics/environm...Environmental Information by Location
/environmentaljusticeEnvironmental Justice
/environmental-topics/greener-...Greener Living
/environmental-topics/health-t...Health
/environmental-topics/land-was...Land, Waste, and Cleanup
https://www.epa.gov/leadLead
https://www.epa.gov/moldMold
https://www.epa.gov/radonRadon
https://www.epa.gov/researchResearch
/environmental-topics/science-...Science Topics
/environmental-topics/water-to...Water Topics
/topics-epa-webA-Z Topic Index
/laws-regulationsLaws & Regulations
A-TITLE View links to regulatory information by topic and sector, and to top pages about environmental laws, regulations, policies, compliance, and enforcement
/regulatory-information-sectorBy Business Sector
/regulatory-information-topicBy Topic
https://www.epa.gov/complianceCompliance
https://www.epa.gov/enforcementEnforcement
/laws-regulations/laws-and-exe...Laws and Executive Orders
/laws-regulations/regulationsRegulations
/report-violationReport a Violation
https://echo.epa.gov/report-en...External Subdomain Environmental Violations
https://www.epaoig.gov/epa-oig...External Subdomain Fraud, Waste or Abuse
https://www.epa.gov/aboutepaAbout EPA
/aboutepa/our-mission-and-what...Our Mission and What We Do
/aboutepa/epa-administratorEPA Administrator
https://www.epa.gov/aboutepaHeadquarters Offices
/aboutepa/regional-and-geograp...Regional Offices
/aboutepa/research-centers-pro...Labs and Research Centers
https://www.epa.gov/planandbudgetPlanning, Budget, and Results
/aboutepa/epa-organization-chartOrganization Chart
https://www.epa.gov/historyEPA History
https://cfpub.epa.gov/locator/...External Subdomain Staff Directory
/comptox-tools/forms/contact-u...Contact Us
/chemical-research/epa-nams-co...Register Here
/form/contact-us-about-comptox...Contact CCTE
/comptox-tools/chemical-exposu...Subdomain ChemExpo Resource Hub
/comptox-tools/cheminformatics...Cheminformatics Resource Hub
/chemical-research/comptox-che...Subdomain CompTox Chemicals Dashboard Resource Hub
/comptox-tools/genra-resource-hubGenRA Resource Hub
/chemical-research/ecotoxicolo...Subdomain ECOTOX Resource Hub
/comptox-tools/sequence-alignm...SeqAPASS Resource Hub
/comptox-tools/comptox-data-an...CompTox Data and APIs
/comptox-tools/forms/contact-u...Text duplicate Contact Us
/lep/assistanceAssistance
/lep/assistanceAyuda
/lep/assistanceمساعدة
/lep/assistance帮助 (简体版)
/lep/assistance幫助 (繁體版)
/lep/assistanceAide
/lep/assistanceAsistans
/lep/assistance지원
/lep/assistanceAssistência
/lep/assistanceПомощь
/lep/assistanceTulong
/lep/assistanceTrợ Giúp
/accessibility/epa-accessibili...Accessibility Statement
https://www.epa.gov/planandbudgetBudget & Performance
https://www.epa.gov/contractsContracting
/utilities/wwwepagov-snapshotsEPA www Web Snapshot
https://www.epa.gov/grantsGrants
/ocr/whistleblower-protections...No FEAR Act Data
/web-policies-and-procedures/p...Plain Writing
https://www.epa.gov/privacyPrivacy
/privacy/privacy-and-security-...Privacy and Security Notice
https://www.epa.gov/dataData
https://www.epaoig.gov/External Subdomain Inspector General
https://www.epa.gov/careersJobs
https://www.epa.gov/newsroomNewsroom
https://www.regulations.gov/External Subdomain Regulations.gov
/newsroom/email-subscriptions-...Subscribe
https://www.usa.gov/External Subdomain USA.gov
https://www.whitehouse.gov/External Subdomain White House
/home/forms/contact-epaContact EPA
/web-policies-and-procedures/e...EPA Disclaimers
/aboutepa/epa-hotlinesHotlines
https://www.epa.gov/foiaFOIA Requests
/home/frequent-questions-speci...Frequent Questions
https://www.facebook.com/EPAExternal Subdomain No Text
https://x.com/epaExternal No Text
https://www.youtube.com/user/U...External Subdomain No Text
https://www.flickr.com/photos/...External Subdomain No Text
https://www.instagram.com/epagovExternal Subdomain No Text
https://www.epa.gov/comptox-toolsAnchor A-TITLE Back to top

Server configuration

HTTP redirects
(Critically important)
The checked page does not redirect to another URL.
HTTP header
(Important)
No X-Powered HTTP header is sent.
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
The page response time is excellent with 0.06 seconds.
The file size of the HTML document is fine (61 kB).

HTTP Response Header

NameValue
content-typetext/html; charset=UTF-8
dateTue, 03 Sep 2024 04:30:45 GMT
servernginx
cache-controlmax-age=10800, public
x-drupal-dynamic-cacheMISS
content-languageen
x-content-type-optionsnosniff
x-frame-optionsSAMEORIGIN
expiresSun, 19 Nov 1978 05:00:00 GMT
last-modifiedMon, 02 Sep 2024 21:43:22 GMT
x-generatorDrupal 10 (https://www.drupal.org)
x-drupal-cacheHIT
x-xss-protection1
feature-policygeolocation 'none';midi 'none';microphone 'none';camera 'none';magnetometer 'none';gyroscope 'none';fullscreen 'self';payment 'none'
referrer-policyno-referrer-when-downgrade
content-security-policyblock-all-mixed-content; default-src * data: 'unsafe-inline' 'unsafe-eval'; worker-src * blob: data: 'unsafe-inline' 'unsafe-eval'; child-src * blob: data: 'unsafe-inline' 'unsafe-eval'; img-src * blob: data: 'unsafe-inline' 'unsafe-eval';
strict-transport-securitymax-age=31536000; preload
content-encodinggzip
etagW/"1725313402"
varyAccept-Encoding,Cookie
x-cacheHit from cloudfront
via1.1 577d8c1d3279d6a0f53cebe01ead8c6e.cloudfront.net (CloudFront)
x-amz-cf-popFRA56-P10
x-amz-cf-id8riPcA2L03gptgzlH_TbbK4O1oUMGuMcfqI_blfKnUL0-T_9VDvjAA==
age1305
statuscode200
http_versionHTTP/2

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 34 referring domains.
This page has 89 backlinks.
This page has backlinks from 33 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.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/
# 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/
# Theme artifacts (including pattern lab):
Disallow: /themes/
Allow: /themes/*.css$
Allow: /themes/*.css?
Allow: /themes/*.js$
Allow: /themes/*.js?
Allow: /themes/*.gif
Allow: /themes/*.jpg
Allow: /themes/*.jpeg
Allow: /themes/*.png
Allow: /themes/*.svg

Similar sites

Search preview

www.epa.gov › comptox-tools
Computational Toxicology and Exposure Online Resources | US EPA
EPA's Safer Chemicals program produces a variety of computational tools to assist users in decision-making, researching, and evaluating chemical information. These tools offer a wealth of chemistry, toxicity, and exposure data that is publicly accessible.

Most important keywords

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

KeywordResultRecheck
Exposure77%Check
Computational77%Check
Computational Toxicology Exposure73%Check
Computational Toxicology72%Check
Exposure Online71%Check
Exposure Online Resources70%Check
Toxicology66%Check
computational tools66%Check
Resource65%Check
Resources65%Check
Show more keywords and terms

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