Cancer.gov - SEO Checker

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Overview of the SEO Check
Meta information
100% 
Page quality
73% 
Page structure
79% 
Link structure
87% 
Server
86% 
External factors
100% 
SEO Score
Response time
1.18 s
File size
42.10 kB
Words
399
Media files
13
Number of links
43 internal / 11 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Comprehensive Cancer Information - NCI
The length of the page title is perfect. (372 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Accurate, up-to-date, comprehensive cancer information from the U.S. government's principal agency for cancer research.
The length of the meta description is perfect. (753 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.cancer.gov/
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en
Language defined in HTTP-Equiv meta tag: en
Server location: United States of America
The following language is defined by HTML: en
Alternate/Hreflang Links
(Somewhat important)
The specified alternate links have no errors.
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
descriptionAccurate, up-to-date, comprehensive cancer information from the U.S. government's principal agency for cancer research.
robotsindex
cgdp.domaincgov
cgdp.templatencids_without_title
dcterms.subjectNCI Homepage
dcterms.typecgvHomeLanding
dcterms.coveragenciglobal,ncienterprise
dcterms.isPartOfNCI Homepage
dcterms.isReferencedByevent1
dcterms.issued01/01/1980 - 07:00
x-no-opnone
GeneratorDrupal 10 (https://www.drupal.org)
MobileOptimizedwidth
HandheldFriendlytrue
viewportwidth=device-width, user-scalable=yes, initial-scale=1, minimum-scale=1
apple-mobile-web-app-titleCancer.gov
application-nameCancer.gov
langen
twitter:cardsummary
og:typeWebsite
og:urlhttps://www.cancer.gov/
og:titleComprehensive Cancer Information
og:descriptionAccurate, up-to-date, comprehensive cancer information from the U.S. government's principal agency for cancer research.
og:imagehttps://www.cancer.gov/sites/g/files/xnrzdm211/files/styles/cgov_social_media/public/cgov_image/media_image/2023-07/hero-image-homepage-promo.jpg
X-UA-CompatibleIE=edge
content-languageen
charsetutf-8

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Page quality

Content
(Critically important)
There are only 399 words on this page. Good pages should have about 800 words of useful content.
27.3% 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.
7 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 16.89 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
A viewport "width=device-width, user-scalable=yes, initial-scale=1, minimum-scale=1" 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 8 tags for this page.
Image SEO
(Somewhat important)
2 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
...s/ncids_header/logos/Logo_NCI_Mobile.svgNo alt attribute provided
...o/2023-07/hero-image-homepage-mobile.jpgFemale medical professional reviewing results with a patient and caregiver.
...7/People Affected 16-9.jpg?itok=S4odN5HcCancer patient and caregiver speaking with a doctor.
...23-07/Researchers 16-9.jpg?itok=_AbpiXgNFemale researcher writes on a sample vial while sitting by a microscope.
...Ecoli niaid.jpg?h=0a40c6e2&itok=Yl6LZxwBA scanning electron micrograph of E. coli, with the rod-shaped bacteria colored a mustard yellow.
...actoids_EN2.jpg?h=67833192&itok=mmEF_DPQA factoid that reads: From 1975 to 2020, prevention and screening efforts averted 4.75 million deaths from five cancer types: breast, cervical colorectal, lung prostate.
...24-12/ecDNA.JPG?h=56021c86&itok=qt8-o_9hCellular level imaging of a tissue sample shows many ecDNAs in and about chromosomes.
...FC-Hero-4x3.jpg?h=f0cc10ca&itok=1dmCLtT5Illustration depicting a silhouette of ten people with different ages, backgrounds, and abilities in front of a centrally illuminated blue and red background. A connected series of people icons throughout the image represents data collected from individuals and groups.
...x9/2023-12/CIS-16-9-01.jpg?itok=zlnesrsoRepresentative on a headset helping a patient who has called in for assistance
...eature-card.gif?h=542dcc49&itok=LwX14miwIllustration of three scientists having a conversation.
...ing-article.jpg?h=24088f54&itok=iinxFI9wNational Cancer Institute Shady Grove campus.
...015-article.jpg?h=f8a4c3d2&itok=HIWvwPd3NCI advisory board members seated around a conference table.
...reatment-HighRes-Thumb.jpg?itok=bLdzNmdXNo alt attribute provided

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H2 Improving the lives of all people through cancer research
H2 For People Affected by Cancer
H2 For Researchers
H2 Featured News and Research
H2 NCI Fiscal Year 2026 Annual Plan & Professional Judgment Budget Proposal
H2 Get Answers
H2 Our Organization
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 number of internal links is ok.
There are 11 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://www.cancer.gov/Anchor Skip to main content
https://www.cancer.gov/espanolEspañol
https://www.cancer.gov/No Text
/about-cancerAbout Cancer
https://www.cancer.gov/typesCancer Types
https://www.cancer.gov/researchResearch
/grants-trainingGrants & Training
/news-eventsNews & Events
https://www.cancer.gov/about-nciAbout NCI
https://www.cancer.gov/typesFind a Cancer Type
/about-cancer/treatmentTreatment
/about-cancer/treatment/side-e...Side Effects
/about-cancer/causes-preventionCauses & Prevention
/about-cancer/diagnosis-stagingDiagnosis & Staging
/research/participate/clinical...Find a Clinical Trial
/grants-training/grants-fundin...Funding Opportunities
/research/resourcesResources for Researchers
/grants-training/apply-grantApply for a Grant
/grants-training/training/at-nciTraining at NCI
/grants-training/grants-fundin...Find a Research Contact
/research/key-initiativesKey NCI Initiatives
/news-events/cancer-currents-b...Engineered Bacteria Shrink Tumors in Mice Researchers have turned to an unconventional source for use as a cancer immunotherapy: the bacterium E. coli.
IMG-ALT A scanning electron micrograph of E. coli, with the rod-shaped bacteria colored a mustard yellow.
/news-events/press-releases/20...Study Examines Impact of Prevention and Screening on Cancer Deaths Prevention and screening accounted for 80% of the averted deaths from five common cancer t...
IMG-ALT A factoid that reads: From 1975 to 2020, prevention and screening efforts averted 4.75 million deaths from five cancer types: breast, cervical colorectal, lu...
/news-events/cancer-currents-b...Treatment May Target Tumors Fueled by ecDNAs Circular DNA in cancer cells create a weakness that can be exploited with an experimental drug.
IMG-ALT Cellular level imaging of a tissue sample shows many ecDNAs in and about chromosomes.
/research/leading-progress?cid...Subdomain Learn More
https://www.cancer.gov/contactGet Started
/about-nci/leadershipSenior Leaders Information about NCI Director Dr. W. Kimryn Rathmell and other senior NCI leaders.
IMG-ALT Illustration of three scientists having a conversation.
/about-nci/organizationNCI Divisions, Offices, and Centers NCI has 30 divisions, offices, and centers who work together to build, maintain, and enhance a cohesive and comprehensive...
IMG-ALT National Cancer Institute Shady Grove campus.
/about-nci/advisory-boardsAdvisory Boards and Review Groups NCI relies on advisory committees to provide advice on the National Cancer Program, NCI scientific priorities, and more.
IMG-ALT NCI advisory board members seated around a conference table.
https://www.cancer.gov/Anchor Back To Top
/about-websiteAbout This Website
https://www.cancer.gov/espanolen Español
/policies/copyright-reuseReuse & Copyright
/social-mediaSocial Media
https://www.cancer.gov/contactContact Us
/publicationsPublications
/publications/dictionaries/can...Dictionary of Cancer Terms
/research/participate/clinical...Text duplicate Find a Clinical Trial
/policies/accessibilityAccessibility
/policies/foiaFOIA
/policies/privacy-securityPrivacy & Security
/policies/disclaimerDisclaimers
https://www.hhs.gov/vulnerabil...External Subdomain Vulnerability Disclosure
https://livehelp.cancer.gov/External Subdomain Live Chat
https://nci.az1.qualtrics.com/...New window External Subdomain Site Feedback
https://www.facebook.com/cance...External Subdomain No Text
https://twitter.com/thenciExternal No Text
https://www.instagram.com/nati...External Subdomain No Text
https://www.youtube.com/NCIgovExternal Subdomain No Text
https://www.linkedin.com/compa...External Subdomain No Text
https://www.hhs.gov/External Subdomain U.S. Department of Health and Human Services
https://www.nih.gov/External Subdomain National Institutes of Health
https://www.cancer.gov/Subdomain National Cancer Institute
https://usa.gov/External USA.gov

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.cancer.gov/"
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 slow (1.18 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.
The file size of the HTML document is fine (42 kB).

HTTP Response Header

NameValue
accept-rangesbytes
content-encodinggzip
content-languageen
content-typetext/html; charset=UTF-8
etag"1733935439"
last-modifiedWed, 11 Dec 2024 16:43:59 GMT
servernginx
x-age3
x-ah-environment01live
x-cache-hits1
x-content-type-optionsnosniff
x-drupal-cacheHIT
x-drupal-dynamic-cacheHIT
x-frame-optionsSAMEORIGIN
x-generatorDrupal 10 (https://www.drupal.org)
x-request-idv-22f87852-b7df-11ef-82e1-03c028f67dbe
content-length10179
expiresFri, 13 Dec 2024 02:13:02 GMT
cache-controlmax-age=0, no-cache
pragmano-cache
dateFri, 13 Dec 2024 02:13:02 GMT
varyAccept-Encoding
strict-transport-securitymax-age=31536000 ; includeSubDomains ; preload
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 66,146 referring domains.
This page has 8,752,229 backlinks.
This page has backlinks from 39,002 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

sitemap: https://www.cancer.gov/sitemap.xml
User-agent: *

Similar sites

Search preview

www.cancer.gov
Comprehensive Cancer Information - NCI
Accurate, up-to-date, comprehensive cancer information from the U.S. government's principal agency for cancer research.

Most important keywords

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

KeywordResultRecheck
Cancer81%Check
Cancer Information71%Check
Comprehensive Cancer71%Check
Cancer Research70%Check
comprehensive cancer information67%Check
NCI65%Check
Cancer Institute60%Check
National Cancer60%Check
Cancer Treatment60%Check
Cancer Types60%Check
Show more keywords and terms

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