Acs.org - SEO Checker

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Overview of the SEO Check
Meta information
80% 
Page quality
79% 
Page structure
50% 
Link structure
58% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.27 s
File size
107.00 kB
Words
792
Media files
21
Number of links
119 internal / 29 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
American Chemical Society
The length of the page title is perfect. (247 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
ACS is one of the world’s largest scientific societies and the premier home of chemistry professionals. Find career opportunities, educational resources, professional development, and much more.
The meta description is too long: 1201 pixels from max. 1000 pixels. Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
No canonical link is 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
viewportwidth=device-width, initial-scale=1.0
google-site-verificationzrFJ04vcYOvFKcCcPNgKGd76MBmINAE0VRBCZ0h7mrE
descriptionACS is one of the world’s largest scientific societies and the premier home of chemistry professionals. Find career opportunities, educational resources, professional development, and much more.
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authorEmpty
content_id56448204-7dce-487c-a6c5-1461e2d88635
audienceAll
eventImageEmpty
eventStartEmpty
eventTitleAmerican Chemical Society
eventLabelEmpty
mediaEmpty
tagsEmpty
langen
twitter:site@AmerChemSociety
twitter:titleAmerican Chemical Society
twitter:descriptionACS is one of the world’s largest scientific societies and the premier home of chemistry professionals. Find career opportunities, educational resources, professional development, and much more.
twitter:imagehttps://assetscloud.acs.org/acs-bootstrap/v2.0/images/acs-logo-facebook.png
og:titleAmerican Chemical Society
og:typewebsite
og:urlhttps://www.acs.org/
og:descriptionACS is one of the world’s largest scientific societies and the premier home of chemistry professionals. Find career opportunities, educational resources, professional development, and much more.
og:site_nameAmerican Chemical Society
og:imagehttps://assetscloud.acs.org/acs-bootstrap/v2.0/images/acs-logo-facebook.png
X-UA-CompatibleIE=edge
last-modified05-19-2025
modifiedDate2025-05-19
charsetutf-8

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Page quality

Content
(Critically important)
Words from the H1 heading are not used in the page content.
This page contains 792 words. That's ok.
26.6% 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.
13 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 17.29 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.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 16 tags for this page.
Image SEO
(Somewhat important)
7 images have no alt attribute. The content of alt attributes is used by search engines.
Social Networks
(Nice to have)
This page is optimized perfectly for social networks.
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
...cdn/static/resources/images/acs-logo.svgAmerican Chemical Society, Chemistry for Life ®
....scale.medium.1399.jpg/1744404732813.jpgACS Fall 2025, Washington, D.C. & Virtual, August 17-21, 2025
....scale.medium.1399.jpg/1708704680529.jpgExplore Career Options
...11627432/image.img.png/1708704842592.pngACS-Hach Programs
....scale.medium.1399.jpg/1722966059015.jpg
...88906651/image.img.png/1743014043356.pngChemistry Science Videos & Infographics
....scale.medium.1399.jpg/1708704811875.jpgACS-Hach Programs
...archive-new/c/carbon-monoxide-teaser.pngImage of Carbon monoxide
...t/dam/acsorg/home/stories/headshot01.jpgNo alt attribute provided
...t/dam/acsorg/home/stories/headshot03.jpgNo alt attribute provided
...t/dam/acsorg/home/stories/headshot02.jpgNo alt attribute provided
...t/dam/acsorg/home/stories/headshot04.jpgNo alt attribute provided
...t/dam/acsorg/home/stories/headshot05.jpgNo alt attribute provided
...t/dam/acsorg/home/stories/headshot06.jpgNo alt attribute provided
...t/dam/acsorg/home/stories/headshot07.jpgNo alt attribute provided
...atic/resources/images/acs-logo-white.svgAmerican Chemical Society, Chemistry for Life

Page structure

H1 heading
(Critically important)
Welcome to Amerian Chemical Society
The H1 heading contains the words Welcome to! Use important keywords instead.
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H1 Welcome to Amerian Chemical Society
H2 ACS Fall 2025
H2 Support Science
H2 Connect with the World's Largest Scientific Community
H2 Discover more with ACS scientific resources
H2 Advance your Career in the Global Economy
H2 ACS support for science
H2 We Have Updated our Privacy Policy
H2 Proactive Membership Assistance Program
H2 ¡Ahora en español! Middle School Chemistry website now in Spanish
H2 2024 ACS Annual Report
H2 EXPLORE ACS
H2 MOLECULE OF THE WEEK
H2 BECAUSE PEOPLE LIKE YOU CREATE GREAT CHEMISTRY
H2 Your Success is Our Success
H4 Meetings & Events
H4 Careers
H4 Students & Educators
H4 Communities
H4 Discover Chemistry
H4 Funding & Awards
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.
1 links don't have an anchor text.
The number of internal links is ok.
There are too many external links (29) on this page.

Found links on this page

LinkAttributesAnchor text
https://www.acs.org/Anchor Skip to Main Content
https://www.acs.org/ACS
https://pubs.acs.org/External Subdomain ACS Publications
https://cen.acs.org/External Subdomain C&EN
https://www.cas.org/External Subdomain CAS
https://www.acs.org/IMG-ALT American Chemical Society, Chemistry for Life ®
https://www.acs.org/meetings.htmlMeetings & Events
https://www.acs.org/meetings.htmlText duplicate Meetings & Events
/meetings/acs-meetings.htmlACS Meetings & Expositions
/events/regional.htmlRegional Meetings
/events/greenchemistryconferen...Green Chemistry Conferences
https://www.acs.org/events.htmlEvents Calendar
/meetings/acs-meetings/about/f...Future ACS Meetings
/events/programming-resources....Submit an Abstract
/careers/leadership.htmlLeadership Development
https://institute.acs.org/External Subdomain ACS Institute
/acs-webinars.htmlACS Webinars
https://www.acs.org/events.htmlView all Meetings & Events
/events/fall.htmlIMG-ALT ACS Fall 2025, Washington, D.C. & Virtual, August 17-21, 2025
/events/fall.htmlACS Fall 2025
https://www.acs.org/careers.htmlCareers
https://www.acs.org/careers.htmlText duplicate Careers
/careers/developing-growing-in...Develop and grow in your career
/careers/finding-landing-a-job...Find and land a job
/careers/exploring-career-opti...Explore career options
/careers/finding-networking-op...Find networking opportunities
/careers/chemical-sciences.htmlCareers & the Chemical Sciences
/careers/personal-career-consu...Virtual Career Services
https://institute.acs.org/External Subdomain Text duplicate ACS Institute
/get-experience.htmlGet Experience
https://www.acs.org/careers.htmlView all Careers
https://www.acs.org/careers.htmlIMG-ALT Explore Career Options
https://www.acs.org/careers.htmlText duplicate Explore Career Options
/education.htmlStudents & Educators
/education.htmlText duplicate Students & Educators
/education/resources.htmlEducational Resources
/education/students.htmlFor Students
/education/educators.htmlFor Educators
/education/whatischemistry.htmlExplore Chemistry
/education/policies.htmlStandards & Guidelines
/education/outreach.htmlScience Outreach
/education/books-and-magazines...Books & Magazines
https://teachchemistry.org/External American Association of Chemistry Teachers
/middleschoolchemistry.htmlMiddle School Chemistry
/education/graduate.htmlGraduate Students & Postdoctoral Scholars
/education.htmlView all Students & Educators
/education/educators/acs-hach-...IMG-ALT ACS-Hach Programs
/education/educators/acs-hach-...Text duplicate ACS-Hach Programs
/membership-and-networks.htmlCommunities
/membership-and-networks.htmlText duplicate Communities
/technical-divisions.htmlACS Divisions
/local-sections.htmlLocal Sections
https://www.acs.org/industry.htmlIndustry Resources
/global/chapters.htmlInternational Chapters
https://www.acs.org/global.htmlInternational Resources
/greenchemistry/industry-round...Green Chemistry Roundtables
/membership-and-networks/senio...Senior Chemists
/education/students/college/st...Student Chapters
/education/students/highschool...High School Club
https://acswcc.org/External Women Chemists
/membership-and-networks.htmlView all Communities
/technical-divisions.htmlNo Text
/technical-divisions.htmlText duplicate ACS Divisions
/pressroom.htmlDiscover Chemistry
/pressroom.htmlText duplicate Discover Chemistry
/pressroom/presspacs.htmlScience Articles
/acs-webinars.htmlText duplicate ACS Webinars
/greenchemistry.htmlGreen Chemistry
/chemical-safety.htmlSafety
/pressroom/tiny-matters.htmlTiny Matters Podcast
/pressroom/newsreleases.htmlNews Releases
/pressroom/reactions.htmlReactions Videos
/education/whatischemistry/lan...Landmarks in Chemical History
/pressroom/headline-science.htmlHeadline Science
/pressroom.htmlView all Discover Chemistry
/pressroom/reactions.htmlIMG-ALT Chemistry Science Videos & Infographics
/pressroom/reactions.htmlReactions: Chemistry Science Videos
https://www.acs.org/funding.htmlFunding & Awards
https://www.acs.org/funding.htmlText duplicate Funding & Awards
/funding/awards.htmlAwards
/funding/grants.htmlGrants
/funding/scholarships-fellowsh...Scholarships & Fellowships
/funding/awards/national.htmlNational Awards
/funding/grants/petroleum-rese...Petroleum Research Fund
/funding/industry.htmlIndustry Awards
/funding/green-chemistry.htmlText duplicate Green Chemistry
/funding/local-sections.htmlText duplicate Local Sections
/funding/technical-divisions.htmlText duplicate ACS Divisions
https://www.acs.org/funding.htmlView all Funding & Awards
/funding/awards/chemluminary.htmlText duplicate IMG-ALT ACS-Hach Programs
/funding/awards/chemluminary.htmlChemLuminary Awards
https://www.acs.org/about.htmlAbout ACS
/membership.htmlMembership
/greenchemistry.htmlgreenchemistry
https://www.acs.org/donate.htmlDonate
/volunteer.htmlVolunteer
/membership.htmlSubdomain Text duplicate Membership
/events/fall.htmlACS Fall 2025 Washington, DC & Digital August 17 - 21 Registration and housing are open >
/policy/support-science.htmlSupport Science See how ACS is supporting scientists and join us in advocating for science policy. Learn More >
/membership.htmlConnect with the World's Largest Scientific Community Collaborate and network with like-minded scientists near you and around the world Learn More >
http://pubs.acs.org/External Subdomain Discover more with ACS scientific resources Explore the latest scientific advances and chemistry-related information to address global challenges Learn more >
https://www.acs.org/careers.htmlAdvance your Career in the Global Economy Find the resources and tools you need to succeed and thrive Learn more >
/pressroom/newsreleases/2025/f...ACS support for science
https://www.acs.org/privacy.htmlWe Have Updated our Privacy Policy
/membership/proactive-membersh...Proactive Membership Assistance Program
/middleschoolchemistry-es.html¡Ahora en español! Middle School Chemistry website now in Spanish
https://annualreport.acs.org/External Subdomain 2024 ACS Annual Report
/molecule-of-the-week/archive/...IMG-ALT Image of Carbon monoxide
/molecule-of-the-week/archive/...What molecule am I?
/molecule-of-the-week/archive....View Archive
https://www.join.acs.org/External Subdomain Join ACS
https://membership.renew.acs.org/External Subdomain Renew
https://join.acs.org/?loginSty...External Subdomain Upgrade
https://join.acs.org/?loginSty...External Subdomain Text duplicate Upgrade
https://join.acs.org/?loginSty...External Subdomain Text duplicate Upgrade
https://membership.renew.acs.org/External Subdomain Renew Membership
/membership/member-benefits.htmlSubdomain Explore Membership
https://membership.renew.acs.o...External Subdomain Text duplicate Renew Membership
https://join.acs.org/?loginSty...External Subdomain Text duplicate Upgrade
https://membership.renew.acs.o...External Subdomain Text duplicate Renew Membership
https://join.acs.org/?loginSty...External Subdomain Text duplicate Upgrade
http://my.acs.org/External Subdomain Read Personal Stories
https://www.acs.org/IMG-ALT American Chemical Society, Chemistry for Life
/about.html?sc=180808_GlobalFo...Text duplicate About ACS
/pressroom/news-room.html?sc=1...Press Room
https://recruiting.ultipro.com...External Subdomain Jobs at ACS
/about/governance.html?sc=1808...Governance
https://www.store.acs.org/?sc=...External Subdomain ACS Store
https://membership.join.acs.or...External Subdomain Text duplicate Join ACS
https://membership.renew.acs.o...External Subdomain Text duplicate Renew Membership
/membership.htmlSubdomain Member Benefits
https://www.acs.org/policy.htmlAdvocate
/volunteer.htmlText duplicate Volunteer
https://www.acs.org/donate.htmlText duplicate Donate
https://communities.acs.org/External Subdomain ACS Network
https://www.facebook.com/Ameri...External Subdomain No Text
https://twitter.com/AmerChemSo...External No Text
https://www.linkedin.com/compa...External Subdomain No Text
https://www.instagram.com/amer...External Subdomain No Text
https://www.acs.org/Anchor Top ^
https://www.acs.org/terms.htmlTerms of Use
https://www.acs.org/security.htmlSecurity
https://www.acs.org/privacy.htmlPrivacy
/accessibility-statement.htmlAccessibility
https://www.acs.org/sitemap.htmlSite Map
https://www.acs.org/contact.htmlContact
https://www.acs.org/help.htmlHelp
/copyright.htmlCopyright ©

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.acs.org/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
The web server transmits the web page (HTML) in compressed form.
Performance
(Somewhat important)
The page response time is excellent with 0.27 seconds.
The file size of the HTML document is fine (107 kB).

HTTP Response Header

NameValue
x-vhostwww.acs.org
content-encodinggzip
referrer-policyno-referrer-when-downgrade
cache-controlmax-age=3600,stale-while-revalidate=3600
x-aem-client-continentEU
content-typetext/html;charset=utf-8
access-control-allow-origin*
last-modifiedSun, 25 May 2025 18:09:25 GMT
x-aem-client-countryDE
x-content-type-optionsnosniff
accept-rangesbytes
age2540
dateMon, 26 May 2025 00:36:49 GMT
strict-transport-securitymax-age=31557600
set-cookie63 Characters
x-served-bycache-fra-eddf8230170-FRA, cache-fra-etou8220132-FRA
x-cacheHIT
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http_versionHTTP/2

External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 1,903 referring domains.
This page has 70,526 backlinks.
This page has backlinks from 1,478 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

User-agent: *
Disallow: /bin/*
Disallow: /content/dam/BEA/*
Disallow: /content/fixtures/*
Disallow: /content/archive/*
Disallow: /content/user-sandbox/*
Disallow: /content/dam/acsorg/qa/*
Disallow: /content/acs/en/qa/*
Disallow: /qa/*
Disallow: /content/acs/en/campaigns/*
Disallow: /campaigns/*
Disallow: /content/webhelp/*

Sitemap: https://www.acs.org/sitemap.xml

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www.acs.org
American Chemical Society
ACS is one of the world’s largest scientific societies and the premier home of chemistry professionals. Find career opportunities, educational resources, professional development, and much more.

Most important keywords

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

KeywordResultRecheck
ACS74%Check
career63%Check
Chemical63%Check
Society63%Check
Chemical Society63%Check
Chemistry61%Check
American Chemical Society58%Check
ACS Meetings58%Check
Scientific54%Check
Largest Scientific54%Check
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