Castlebiosciences.com - SEO Checker

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Overview of the SEO Check
Meta information
80% 
Page quality
65% 
Page structure
83% 
Link structure
25% 
Server
86% 
External factors
100% 
SEO Score
Response time
0.52 s
File size
91.60 kB
Words
974
Media files
39
Number of links
170 internal / 20 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Castle Biosciences | Innovative Molecular Diagnostics
The length of the page title is perfect. (482 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Castle Biosciences' broad portfolio of innovative tests empowers providers and patients with personalized information to better inform care decisions. Castle Biosciences' broad portfolio of innovative tests empowers providers and patients with person
The meta description is too long: 1532 pixels from max. 1000 pixels. Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://castlebiosciences.com/
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 name is very long.
The domain is no subdomain.
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

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be:timer57ms
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be:norm_urlhttps%3A%2F%2Fcastlebiosciences.com%2F
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be:api_dtZy_2024;Zm_04;Zd_23;Zh_14;Zmh_37;p_epoch:1713883077562
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be:messagesfalse
viewportwidth=device-width, initial-scale=1, shrink-to-fit=no
descriptionCastle Biosciences' broad portfolio of innovative tests empowers providers and patients with personalized information to better inform care decisions. Castle Biosciences' broad portfolio of innovative tests empowers providers and patients with person
langen
twitter:titleCastle Biosciences | Innovative Molecular Diagnostics
twitter:descriptionCastle Biosciences' broad portfolio of innovative tests empowers providers and patients with personalized information to better inform care decisions. Castle Biosciences' broad portfolio of innovative tests empowers providers and patients with person
twitter:cardsummary_large_image
twitter:site_name@CastleBio
twitter:creator@CastleBio
og:titleCastle Biosciences | Innovative Molecular Diagnostics
og:descriptionCastle Biosciences' broad portfolio of innovative tests empowers providers and patients with personalized information to better inform care decisions. Castle Biosciences' broad portfolio of innovative tests empowers providers and patients with person
og:typewebsite
og:site_nameCastle Biosciences
og:urlhttps://castlebiosciences.com/
charsetutf-8

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Page quality

Content
(Critically important)
Some words from the page title are not used within the pages content
Words from the H1 heading are not used in the page content.
This page contains 974 words. That's ok.
23% of the text are stop words.
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 24.16 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, 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 19 tags for this page.
Image SEO
(Somewhat important)
17 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
/static/img/util-search-icon.svgNo alt attribute provided
/static/img/util-physician-icon.svgNo alt attribute provided
/static/img/logo.svglogo
/static/img/nav-icon-mobile.svgmenu
/static/img/nav-icon-mobile-close.svgmenu close
/static/img/util-search-icon-mobile.svgNo alt attribute provided
/static/img/util-physician-icon-mobile.svgNo alt attribute provided
/static/img/logo.svglogo
/static/img/breadcrumb-arrow.svgshow menu
/static/img/hp-bg-mobile.svgBackground decoration
/_default_upload_bucket/Frame_2.svgNavigate to Dermatology
/_default_upload_bucket/Frame_3.svgNavigate to Gastroenterology
/_default_upload_bucket/Layer_28_3.svgNavigate to Ophthalmology
...ecision DX - Diff-Dx-MyPath.ddfc989d.pngAn active older man is outside at sunrise and looking into the distance
/_default_upload_bucket/Decision-Dx_1.svgNo alt attribute provided
/_default_upload_bucket/MyPath_3.svgNo alt attribute provided
...478b24840a/Decision DX -SCC.13cdce5c.pngA happy older man fishes with his son
...ault_upload_bucket/decision-dx-scc_1.svgNo alt attribute provided
...ada2478b24840a/TissueCypher.92f36d92.pngAn older man walks his dog on a trail
...load_bucket/tissue-cypher-barretts_1.svgNo alt attribute provided
...2478b24840a/Decision DX -UM.6bf632b3.pngA smiling older woman leans against a wall
...fault_upload_bucket/decision-dx-um_1.svgNo alt attribute provided
..._upload_bucket/decision-dx-prame (1).svgNo alt attribute provided
...lt_upload_bucket/decision-dx-umseq_1.svgNo alt attribute provided
..._width411/iStock-1461330630.452dad90.jpgNo alt attribute provided
...dth411/SCC-oldman-physician.2eef970d.pngA clinican speaks to a patient sitting beside her in her office
...411/Tests-MyPath-Overview_2.6b0d2889.pngNo alt attribute provided
...1aa58/get-image-thumbnail_8.c7fdd70e.pngNo alt attribute provided
..._width411/khara-video-thumb.93b09cf8.jpgNo alt attribute provided
...ate/How we're different (1).ccec0714.pngNo alt attribute provided
/_default_upload_bucket/Layer_96.svgNo alt attribute provided
/static/img/news-press-release-icon.svgConference icon
/static/img/news-press-release-icon.svgConference icon
/static/img/news-press-release-icon.svgConference icon
...-Bio-Career-Page-Gif_v2 (4).b1d6d28a.gifA rotating image. Image 1 A woman is pleased as she looks at a computer screen Image 2 A woman engaged happily with someone across a table from her Image 3 A clinician looks down at a tablet
Video URLWidthHeight
/static/animations/hp-masthead-bg.mp4

Page structure

H1 heading
(Critically important)
Empowering people, informing care decisions.
The H1 heading is perfect.
Headings
(Important)
Some headings occur twice on the page.
There are 27 headings on the page. The amount of headings should be in a more proper relation to the amount of text.
Some headings do not have any content.

Heading structure

Heading levelContent
H1 Empowering people, informing care decisions.
H2 Clinical focus areas
H2 Empty heading
H2 Our tests
H2 Featured spotlights
H2 Relentless pursuit of the best outcomes
H2 The latest
H2 Empty heading
H2 We are transforming disease management. Join in the transformation.
H3 Cutaneous Melanoma
H3 Cutaneous Squamous Cell Carcinoma (SCC)
H3 Barrett’s Esophagus
H3 Uveal Melanoma
H3 News
H4 Prospective, multicenter analysis of RFS after SLN guidance from 31-GEP
H4 Metastasis-free survival prediction with the 40-gene expression profile test in patients with cutaneous squamous cell carcinoma risk stratified according to the National Comprehensive Cancer Networ...
H4 Explore on-demand MyPath Melanoma case study webinars
H4 Largest prospective study to date of patients with uveal melanoma further supports performance of DecisionDx-UM for metastatic risk stratification and highlights PRAME as a valuable adjunct biomark...
H4 TissueCypher Barrett’s esophagus assay impacts clinical decisions in the management of patients with Barrett’s esophagus
H4 Real-World Study Confirms Long-Term Performance of DecisionDx®-UM for Metastatic Risk Stratification in Uve...
H4 Castle Biosciences Celebrates Skin Cancer Awareness Month
H4 Castle Biosciences Reports First Quarter 2025 Results
H5 Press Release
H5 Press Release Duplicate text
H5 Press Release Duplicate text
H5 Socials
H5 Featured
H5 Login
H5 Utility
Some anchor texts are used more than once.
7 links don't have an anchor text.
There are 1 links with a trivial anchor text.
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 20 external links on this page.

Found links on this page

LinkAttributesAnchor text
/searchSearch
https://portal.castlebioscienc...New window External Subdomain Clinician Ordering Portal
https://castlebiosciences.com/IMG-ALT logo
/testsTests
/tests/prognosticPrognostic
/tests/prognostic/decisiondx-m...DecisionDx-Melanoma
/tests/prognostic/decisiondx-m...Overview
A-TITLE DecisionDx-Melanoma: Precision Genetic Testing for Melanoma
/tests/prognostic/decisiondx-m...How It Works
/tests/prognostic/decisiondx-m...Scientific Evidence
/tests/prognostic/decisiondx-m...Order Process & Results
/tests/prognostic/decisiondx-m...Resources
/tests/prognostic/decisiondx-s...DecisionDx-SCC
/tests/prognostic/decisiondx-s...Text duplicate Overview
/tests/prognostic/decisiondx-s...Text duplicate How It Works
/tests/prognostic/decisiondx-s...Text duplicate Scientific Evidence
/tests/prognostic/decisiondx-s...Text duplicate Order Process & Results
/tests/prognostic/decisiondx-s...Text duplicate Resources
/tests/prognostic/tissuecypher...TissueCypher
/tests/prognostic/tissuecypher...Text duplicate Overview
/tests/prognostic/tissuecypher...Text duplicate How It Works
/tests/prognostic/tissuecypher...Text duplicate Scientific Evidence
/tests/prognostic/tissuecypher...Text duplicate Order Process & Results
/tests/prognostic/tissuecypher...Text duplicate Resources
/tests/prognostic/decisiondx-u...DecisionDx-UM
/tests/prognostic/decisiondx-u...Text duplicate Overview
/tests/prognostic/decisiondx-u...Text duplicate How It Works
/tests/prognostic/decisiondx-u...Text duplicate Scientific Evidence
/tests/prognostic/decisiondx-u...Text duplicate Order Process & Results
/tests/prognostic/decisiondx-u...Practice Integration
/tests/diagnosticDiagnostic
/tests/diagnostic/mypath-melan...MyPath Melanoma
/tests/diagnostic/mypath-melan...Text duplicate Overview
/tests/diagnostic/mypath-melan...Text duplicate How It Works
/tests/diagnostic/mypath-melan...Text duplicate Scientific Evidence
/tests/diagnostic/mypath-melan...Text duplicate Order Process & Results
/tests/diagnostic/mypath-melan...Text duplicate Practice Integration
/tests/diagnostic/mypath-melan...Text duplicate Resources
/tests/diagnostic/diffdx-melan...DiffDx-Melanoma
/tests/diagnostic/diffdx-melan...Text duplicate How It Works
/tests/diagnostic/diffdx-melan...Text duplicate Order Process & Results
/tests/diagnostic/diffdx-melan...Text duplicate Resources
/patient-informationPatient Information
/patient-information/dermatolo...Cutaneous Melanoma
/patient-information/dermatolo...Text duplicate Overview
/patient-information/dermatolo...Diagnosis & Evaluation
/patient-information/dermatolo...Treatment & Management
/patient-information/dermatolo...Our Tests
/patient-information/dermatolo...Text duplicate Resources
/patient-information/dermatolo...Cutaneous Squamous Cell Carcinoma
/patient-information/dermatolo...Text duplicate Overview
/patient-information/dermatolo...Text duplicate Diagnosis & Evaluation
/patient-information/dermatolo...Text duplicate Treatment & Management
/patient-information/dermatolo...Our Test
/patient-information/gastroent...Barrett's Esophagus
/patient-information/gastroent...Text duplicate Overview
/patient-information/gastroent...Diagnosis & Screening
/patient-information/gastroent...Cancer Risk
/patient-information/gastroent...Text duplicate Treatment & Management
/patient-information/gastroent...Text duplicate Our Test
/patient-information/gastroent...Glossary
/patient-information/ophthalmo...Uveal Melanoma
/patient-information/ophthalmo...Text duplicate Overview
/patient-information/ophthalmo...Text duplicate Diagnosis & Evaluation
/patient-information/ophthalmo...Text duplicate Treatment & Management
/patient-information/ophthalmo...Text duplicate Our Test
/patient-information/ophthalmo...Know Your Metastatic Risk
/patient-information/ophthalmo...Test Process & Results
/patient-information/ophthalmo...Additional UM Tests
/science/technologyScience
/science/technologyTechnology
/science/technology/gene-expre...Gene Expression Profiling
/science/technology/spatial-bi...Spatial Biology
/science/our-approachOur Approach
/resources/scientific-evidenceScientific Publications
/resourcesText duplicate Resources
/resources/scientific-evidenceText duplicate Scientific Evidence
/resources/provider-resourcesProvider Resources
http://portal.castlebioscience...External Subdomain Clinician Portal
/Utilities/order-a-testOrder a Test
/resources/patient-resourcesPatient Resources
/resources/patient-resources/t...Test Overviews
/resources/patient-resources/p...Patient Stories
/company/contact-usContact Us
/resources/patient-resources/a...Advocacy Groups & Forums
/resources/faq-landingFAQ
/resources/insurance-coverageInsurance Coverage
/resources/on-demand-educationOn Demand Education
/case-with-castleCase Studies
/companyCompany
https://ir.castlebiosciences.c...External Subdomain Investors
/company/careersCareers
/company/contact-usText duplicate Contact Us
/company/contact-us/find-a-rep...Find a Representative
/company/leadership-and-board-...Leadership & Board of Directors
/company/castle-laboratoriesCastle Laboratories
/corporateresponsibilityEnvironmental, Social & Governance
https://ir.castlebiosciences.c...External Subdomain News
/media-centerMedia Center
/Utilities/order-a-testOrder Test
/company/contact-usContact
/testsText duplicate Tests
/tests/prognosticText duplicate Prognostic
/tests/prognostic/decisiondx-m...Text duplicate DecisionDx-Melanoma
/tests/prognostic/decisiondx-s...Text duplicate DecisionDx-SCC
/tests/prognostic/tissuecypher...Text duplicate TissueCypher
/tests/prognostic/decisiondx-u...Text duplicate DecisionDx-UM
/tests/diagnosticText duplicate Diagnostic
/tests/diagnostic/mypath-melan...Text duplicate MyPath Melanoma
/tests/diagnostic/diffdx-melan...Text duplicate DiffDx-Melanoma
/patient-informationText duplicate Patient Information
/patient-information/dermatolo...Text duplicate Cutaneous Melanoma
/patient-information/dermatolo...Text duplicate Cutaneous Squamous Cell Carcinoma
/patient-information/gastroent...Text duplicate Barrett's Esophagus
/patient-information/ophthalmo...Text duplicate Uveal Melanoma
/science/technologyText duplicate Science
/science/technologyText duplicate Technology
/science/technology/gene-expre...Text duplicate Gene Expression Profiling
/science/technology/spatial-bi...Text duplicate Spatial Biology
/science/our-approachText duplicate Our Approach
/resources/scientific-evidenceText duplicate Scientific Publications
/resourcesText duplicate Resources
/resources/scientific-evidenceText duplicate Scientific Evidence
/resources/provider-resourcesText duplicate Provider Resources
http://portal.castlebioscience...External Subdomain Text duplicate Clinician Portal
/Utilities/order-a-testText duplicate Order a Test
/resources/patient-resourcesText duplicate Patient Resources
/resources/patient-resources/t...Text duplicate Test Overviews
/resources/patient-resources/p...Text duplicate Patient Stories
/company/contact-usText duplicate Contact Us
/resources/patient-resources/a...Text duplicate Advocacy Groups & Forums
/resources/faq-landingText duplicate FAQ
/resources/insurance-coverageText duplicate Insurance Coverage
/resources/on-demand-educationText duplicate On Demand Education
/case-with-castleText duplicate Case Studies
/companyText duplicate Company
https://ir.castlebiosciences.c...External Subdomain Text duplicate Investors
/company/careersText duplicate Careers
/company/contact-usText duplicate Contact Us
/company/contact-us/find-a-rep...Text duplicate Find a Representative
/company/leadership-and-board-...Text duplicate Leadership & Board of Directors
/company/castle-laboratoriesText duplicate Castle Laboratories
/corporateresponsibilityText duplicate Environmental, Social & Governance
https://ir.castlebiosciences.c...External Subdomain Text duplicate News
/media-centerText duplicate Media Center
/searchText duplicate Search
https://castlebiosciences.com/Text duplicate Clinician Ordering Portal
https://castlebiosciences.com/Text duplicate Order Test
https://castlebiosciences.com/Text duplicate Contact
/companyAbout Us
/patient-informationText duplicate Patient Information
/tests/prognostic/decisiondx-m...No Text
/tests/diagnostic/mypath-melanomaNo Text
/tests/prognostic/decisiondx-s...No Text
/tests/prognostic/tissuecypher...No Text
/tests/prognostic/decisiondx-u...No Text
/tests/prognostic/decisiondx-u...No Text
/tests/prognostic/decisiondx-u...No Text
https://pubmed.ncbi.nlm.nih.go...External Subdomain This study
/resources/scientific-evidence...New window Learn more
/_default_upload_bucket/SC_01_...New window Trivial anchor text
Read more
/resources/cases-with-castle/m...New window View more
https://ascopubs.org/doi/10.12...External Text duplicate Trivial anchor text
Read more
https://info.castlebiosciences...New window External Subdomain Text duplicate Trivial anchor text
Read more
/science/our-approachText duplicate Our Approach
/resources/scientific-evidenceView Publications
https://ir.castlebiosciences.c...New window External Subdomain Trivial anchor text
Read More
https://ir.castlebiosciences.c...New window External Subdomain Text duplicate Trivial anchor text
Read More
https://ir.castlebiosciences.c...New window External Subdomain Text duplicate Trivial anchor text
Read More
https://ir.castlebiosciences.c...External Subdomain View All
/company/careersJoin Us
https://www.instagram.com/cast...New window External Subdomain Instagram
https://www.facebook.com/castl...New window External Subdomain Facebook
https://www.linkedin.com/compa...New window External Subdomain LinkedIn
https://x.com/castlebioNew window External X
https://www.youtube.com/channe...New window External Subdomain YouTube
/testsText duplicate Tests
/patient-informationFocus area
/scienceText duplicate Science
/company/careersText duplicate Careers
/company/investorsText duplicate Investors
/resourcesText duplicate Resources
/companyText duplicate Company
/media-centerText duplicate Media Center
/company/contact-usText duplicate Contact Us
https://portal.castlebioscienc...New window External Subdomain Text duplicate Clinician Portal
/Utilities/terms-of-useTerms of use
/Utilities/privacy-policyPrivacy policy
/patient-information/gastroent...Barrett's Esophagus Cancer Risk
/patient-information/ophthalmo...DecisionDx-UM Testing Process
/patient-information/gastroent...Barrett's Esophagus Treatment Procedures

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://castlebiosciences.com/"
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 0.52 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 (92 kB).

HTTP Response Header

NameValue
dateSat, 17 May 2025 15:34:48 GMT
content-typetext/html; charset=UTF-8
servernginx
varyAccept-Encoding
cache-controlno-cache, private
x-powered-bypimcore
content-languageen
x-pimcore-cache-date2025-05-15T20:03:33+00:00
x-pimcore-output-cache-tagoutput_78414b08f60c6a9aafdf763e6c0c9d3c
age156675
referrer-policysame-origin
x-frame-optionsSAMEORIGIN
x-xss-protection1; mode=block
x-content-type-optionsnosniff
content-encodinggzip
statuscode200
http_versionHTTP/2

External factors

This website has excellent links from other websites.
This page has backlinks from 255 referring domains.
This page has 2,052 backlinks.
This page has backlinks from 225 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

User-agent: *
Disallow:
Sitemap: https://castlebiosciences.com/sitemap.xml

Similar sites

Search preview

castlebiosciences.com
Castle Biosciences | Innovative Molecular Diagnostics
Castle Biosciences' broad portfolio of innovative tests empowers providers and patients with personalized information to better inform care decisions. Castle Biosciences' broad portfolio of innovative tests empowers providers and patients with person

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KeywordResultRecheck
Castle79%Check
Castle Biosciences78%Check
Biosciences74%Check
decisions66%Check
innovative58%Check
Test56%Check
Patient56%Check
innovative tests55%Check
patients54%Check
Tests52%Check
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