Aacrjournals.org - SEO Checker

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Overview of the SEO Check
Meta information
80% 
Page quality
79% 
Page structure
100% 
Link structure
63% 
Server
84% 
External factors
100% 
SEO Score
Response time
0.55 s
File size
51.00 kB
Words
357
Media files
30
Number of links
76 internal / 9 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
American Association for Cancer Research
The length of the page title is perfect. (384 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://aacrjournals.org/
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en
Server location: Canada
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, maximum-scale=10
format-detectiontelephone=no
theme-color#002f65
langen
og:site_nameAmerican Association for Cancer Research
og:titleAmerican Association for Cancer Research
og:descriptionAmerican Association for Cancer Research
og:typewebsite
og:urlhttps://aacrjournals.org/
og:updated_timeEmpty
Content-Typetext/html; charset=UTF-8
X-UA-CompatibleIE=Edge

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Page quality

Content
(Critically important)
There are only 357 words on this page. Good pages should have about 800 words of useful content.
19.9% 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.
5 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 15.13 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, maximum-scale=10" 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 7 tags for this page.
Image SEO
(Somewhat important)
3 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
...s/Live/images/umbrella/umbrella-logo.svgAmerican Association for Cancer Research Logo
...brella/aacr-logo-hero.svg?versionId=1448AACR - American Association of Cancer Research
...Us_FeatArtic_417x226_.jpg?versionId=7980AACR Journals Graphic - AACR now on LinkedIn
...llection_2025_feature.png?versionId=7979graphic image for Blood Cancer Discovery's Lymphoma Collection
...o_Journal_Wgs_417x226.jpg?versionId=7069No alt attribute provided
...cience-Special-Series.jpg?versionId=8038Data Science Series graphic
...loodcandisc_6_1_200px.png?versionId=7061Blood Cancer Discovery
.../m_candisc_15_1_200px.png?versionId=7078Cancer Discovery
...ers/m_cebp_34_1_200px.png?versionId=7053Cancer Epidemiology, Biomarkers, & Prevention
...s/m_canimm_13_1_200px.png?versionId=7054Cancer Immunology Research
...canprevres_18_1_200px.png?versionId=7055Cancer Prevention Research
...s/m_canres_85_1_200px.png?versionId=7056Cancer Research
...clincanres_31_1_200px.png?versionId=7057Clinical Cancer Research
..._molcanres_23_1_200px.png?versionId=7058Molecular Cancer Research
...molcanther_24_1_200px.png?versionId=7059Molecular Cancer Therapeutics
..._crc_cover_2025_200px.png?versionId=7052Cancer Research Communications
...a/icons/RSS-icon-16px.png?versionId=8058No alt attribute provided
...ns/linkedin1-icon-wht.png?versionId=8058LinkedIn link icon
...ns/linkedin1-icon-blk.png?versionId=8058LinkedIn link icon
...ons/bluesky1-icon-wht.png?versionId=8058Bluesky link icon
...ons/bluesky1-icon-blk.png?versionId=8058Bluesky link icon
...lla/aacr_KO-h2-footer.png?versionId=8058No alt attribute provided
...lla/icons/x1-icon-wht.png?versionId=8058Twitter/X link icon
...ella/icons/x-icon-blk.png?versionId=8058Twitter/X link icon
...la/icons/fb1-icon-wht.png?versionId=8058Facebook link icon
...lla/icons/fb-icon-blk.png?versionId=8058Facebook link icon
...icons/insta1-icon-wht.png?versionId=8058Instagram link icon
.../icons/insta-icon-blk.png?versionId=8058Instagram link icon
...la/icons/yt1-icon-wht.png?versionId=8058Youtube link icon
...la/icons/yt1-icon-blk.png?versionId=8058Youtube link icon

Page structure

H1 heading
(Critically important)
AACR - American Association of Cancer Research
The H1 heading is perfect.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 AACR - American Association of Cancer Research
H2 In The Spotlight
H2 Journals
H3 AACR Journals
H3 Resources
H3 AACR Journals on Social Media
H4 Blood Cancer Discovery
H4 Cancer Discovery
H4 Cancer Epidemiology, Biomarkers, & Prevention
H4 Cancer Immunology Research
H4 Cancer Prevention Research
H4 Cancer Research
H4 Clinical Cancer Research
H4 Molecular Cancer Research
H4 Molecular Cancer Therapeutics
H4 Cancer Research Communications
H5 This Feature Is Available To Subscribers Only
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.
None of the anchor texts is too long.
There are 9 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://aacrjournals.org/Anchor Skip to Main Content
https://aacrjournals.org/IMG-ALT American Association for Cancer Research Logo
/advanced-searchAdvanced Search
/my-account/register?siteId=1&...Register
/bloodcancerdiscovBlood Cancer Discovery
/cancerdiscoveryCancer Discovery
https://aacrjournals.org/cebpCancer Epidemiology, Biomarkers & Prevention
/cancerimmunolresCancer Immunology Research
/cancerpreventionresearchCancer Prevention Research
/cancerresCancer Research
/cancerrescommunCancer Research Communications
/clincancerresClinical Cancer Research
https://aacrjournals.org/mcrMolecular Cancer Research
https://aacrjournals.org/mctMolecular Cancer Therapeutics
/pages/iforaInformation for Authors
/content/authors/author-servic...Author Services
/pages/awardsJournal Awards
/pages/select-aacr-journalAACR Journals
/pages/advertisingAdvertising
/pages/3rd-party-permissionsPermissions & Reprints
/pages/subscribers-infoSubscriptions
/pages/select-aacr-journalSubmit
/pages/cancer-hallmarksCancer Hallmarks Collection
/pages/hot-topicsHot Topics
/collection/10684/Towards-Degr...Towards Degrader-Antibody Conjugates
/collection/10801/Advances-in-...Advances in Tumor Immunology and Immunotherapy
/pages/editors-picksEditors' Picks
/pages/covidCOVID-19
/pages/alertsAlerts
https://aacrjournals.org/cdnewsNews
/pages/cancer-hallmarksCancer Hallmarks
/pages/webinarsWebinars
https://www.linkedin.com/compa...External Subdomain IMG-ALT AACR Journals Graphic - AACR now on LinkedIn
https://www.linkedin.com/compa...External Subdomain The AACR Journals are on LinkedIn!
/bloodcancerdiscov/collection/...IMG-ALT graphic image for Blood Cancer Discovery's Lymphoma Collection
/bloodcancerdiscov/collection/...Text duplicate Blood Cancer Discovery
/bloodcancerdiscov/collection/...'s Lymphoma Collection
/cancerres/pages/call-for-papersNo Text
/cancerres/pages/call-for-papersLearn more
/cancerres/pages/data-science-...IMG-ALT Data Science Series graphic
/cancerres/pages/data-science-...Read the latest articles
/bloodcancerdiscovText duplicate IMG-ALT Blood Cancer Discovery
/bloodcancerdiscovText duplicate Blood Cancer Discovery
/cancerdiscoveryText duplicate IMG-ALT Cancer Discovery
/cancerdiscoveryText duplicate Cancer Discovery
https://aacrjournals.org/cebpIMG-ALT Cancer Epidemiology, Biomarkers, & Prevention
https://aacrjournals.org/cebpText duplicate Cancer Epidemiology, Biomarkers, & Prevention
/cancerimmunolresText duplicate IMG-ALT Cancer Immunology Research
/cancerimmunolresText duplicate Cancer Immunology Research
/cancerpreventionresearchText duplicate IMG-ALT Cancer Prevention Research
/cancerpreventionresearchText duplicate Cancer Prevention Research
/cancerresText duplicate IMG-ALT Cancer Research
/cancerresText duplicate Cancer Research
/clincancerresText duplicate IMG-ALT Clinical Cancer Research
/clincancerresText duplicate Clinical Cancer Research
https://aacrjournals.org/mcrText duplicate IMG-ALT Molecular Cancer Research
https://aacrjournals.org/mcrText duplicate Molecular Cancer Research
https://aacrjournals.org/mctText duplicate IMG-ALT Molecular Cancer Therapeutics
https://aacrjournals.org/mctText duplicate Molecular Cancer Therapeutics
/cancerrescommunText duplicate IMG-ALT Cancer Research Communications
/cancerrescommunText duplicate Cancer Research Communications
/bloodcancerdiscovText duplicate Blood Cancer Discovery
/cancerdiscoveryText duplicate Cancer Discovery
https://aacrjournals.org/cebpText duplicate Cancer Epidemiology, Biomarkers & Prevention
/cancerimmunolresText duplicate Cancer Immunology Research
/cancerpreventionresearchText duplicate Cancer Prevention Research
/cancerresText duplicate Cancer Research
/cancerrescommunText duplicate Cancer Research Communications
/clincancerresText duplicate Clinical Cancer Research
https://aacrjournals.org/mcrText duplicate Molecular Cancer Research
https://aacrjournals.org/mctText duplicate Molecular Cancer Therapeutics
/pages/advertisingInformation on Advertising & Reprints
/pages/subscribers-institution...Subdomain Information for Institutions/Librarians
/pages/rssRSS Feeds
/pages/privacy-policyPrivacy Policy
https://www.linkedin.com/compa...New window External Subdomain IMG-ALT LinkedIn link icon
https://bsky.app/profile/aacrj...New window External IMG-ALT Bluesky link icon
https://www.aacr.org/External Subdomain No Text
https://x.com/AACRNew window External IMG-ALT Twitter/X link icon
http://www.facebook.com/aacr.orgNew window External Subdomain IMG-ALT Facebook link icon
https://www.instagram.com/aacr...New window External Subdomain IMG-ALT Instagram link icon
http://www.youtube.com/user/AA...External Subdomain IMG-ALT Youtube link icon
/sign-in?returnUrl=/Sign In
/my-account/register?siteId=1&...Create an Account
/privacy-policyour privacy policy.

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://aacrjournals.org/"
HTTP header
(Important)
The X-powered header is sent within the response header. (unnecessary)
The web server transmits the web page (HTML) in compressed form.
Performance
(Somewhat important)
The page response time of 0.55 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 (51 kB).

HTTP Response Header

NameValue
dateFri, 25 Jul 2025 19:50:37 GMT
content-typetext/html; charset=utf-8
cache-controlprivate
varyAccept-Encoding
set-cookie104 Characters
x-aspnetmvc-version5.2
x-aspnet-version4.0.30319
x-powered-byASP.NET
x-scm-server-number02
access-control-allow-origin*
access-control-allow-headersaccept, cache-control, content-type, authorization
access-control-allow-methodsGET, POST, PUT, DELETE, OPTIONS
x-frame-optionsSAMEORIGIN
content-security-policyframe-ancestors 'self'
cf-cache-statusDYNAMIC
servercloudflare
cf-ray964e2fef7ef4d476-CDG
content-encodinggzip
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 316 referring domains.
This page has 93,577 backlinks.
This page has backlinks from 172 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

User-agent: 008
Disallow: /

User-agent: *
Disallow: /bin/
Disallow: /config/
Disallow: /app_data/
Disallow: /dlls/
Disallow: /App_Themes/
Disallow: /signin.aspx
Disallow: /searchresults.aspx
Disallow: /advancedsearch.aspx
Disallow: /DownloadFile/
Disallow: /downloadimage.aspx
Disallow: /Citation/Download
Disallow: /Shibboleth.sso/
Disallow: /SignInShibboleth.aspx
Disallow: /lookup/external-ref
Disallow: /user/logout
Disallow: /cgi/pmidlookup
Disallow: /Themes/Client/app/img/favicons/manifest.json
Disallow: /lookup/google-scholar
Disallow: /store/*
Allow: /cassette.axd/stylesheet/
Allow: /cassette.axd/script/
Allow: /cassette.axd/manifest.xml
Disallow: /*.axd
Disallow: /submission-inquiry
Disallow: /specificToClient1/

User-agent: Applebot-Extended
Disallow: /

Sitemap: https://aacrjournals.org/data/sitemap/Site_1/sitemap_gbos_site1.xml
Sitemap: https://aacrjournals.org/data/sitemap/Site_1000003/sitemap_gbos_site1000003.xml
Sitemap: https://aacrjournals.org/data/sitemap/Site_1000019/sitemap_gbos_site1000019.xml
Sitemap: https://aacrjournals.org/data/sitemap/Site_1000041/sitemap_gbos_site1000041.xml
Sitemap: https://aacrjournals.org/data/sitemap/sitemap.xml

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Most important keywords

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

KeywordResultRecheck
AACR70%Check
AACR Journals64%Check
American63%Check
Association63%Check
American Association63%Check
Research62%Check
Cancer61%Check
Cancer Research59%Check
Journals58%Check
Prevention Research52%Check
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