Humancellatlas.org - SEO Checker

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Overview of the SEO Check
Meta information
61% 
Page quality
67% 
Page structure
79% 
Link structure
78% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.40 s
File size
41.70 kB
Words
356
Media files
4
Number of links
59 internal / 11 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Home page
The page title is too short. (103 pixels of 580 max pixel length) Optimize title
There are no duplicate words in the title
Meta description
(Critically important)
The meta description is empty.
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.humancellatlas.org/
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en-us
Server location: United States of America
The following language is defined by HTML: en-us
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
robotsindex,follow, max-image-preview:large
titleHome page
descriptionEmpty
simplecookie_policy/privacy-policy/
msapplication-TileImage/wp-content/uploads/2025/02/cropped-HCA-globe-270x270.png
langen-us
twitter:cardsummary_large_image
twitter:site@humancellatlas
twitter:creatorwww-core (Sanger webteam)
twitter:titleHome page
twitter:descriptionEmpty
twitter:imageEmpty
og:urlhttps://www.humancellatlas.org/
og:typearticle
og:titleHome page
og:descriptionEmpty
og:imageEmpty
og:localeen_GB
og:profile_idhumancellatlas
charsetUTF-8

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Page quality

Content
(Critically important)
There are only 356 words on this page. Good pages should have about 800 words of useful content.
The average number of words per sentence of 25.5 words is high.
28.9% of the text are stop words.
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.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
A viewport "width=device-width, initial-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 7 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
data:[...] Base64new_human_cell_atlasnew_human_cell_atlas
data:[...] Base64No alt attribute provided
data:[...] Base64No alt attribute provided
data:[...] Base64CC-by-nc-nd

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
H3 Mission
H3 Human Cell Atlas achieves leap in understanding of the human body
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.
All internal links are not using dynamic parameters.
There are 11 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://www.humancellatlas.org/IMG-ALT new_human_cell_atlas
/learn-more/about-the-human-ce...What is the Human Cell Atlas?
/learn-more/hca-policies-and-p...Policies and Procedures
/learn-more/hca-white-paper/HCA White Paper
/learn-more/global-community/Global Community
/learn-more/join-the-hca/Join the HCA
/learn-more/frequently-asked-q...FAQ
/learn-more/contact/Contact
https://data.humancellatlas.org/New window External Subdomain Atlases & Datasets
/ethics-and-equity/Ethics & Equity
/ethics-and-equity/ethics-work...Ethics Working Group
/ethics-and-equity/equity-work...Equity Working Group
/ethics-and-equity/regional-ne...Regional Networks
/publications/Publications
https://events.humancellatlas....External Subdomain 2025 General Meeting
/news-and-media/News
/news-and-media/hca-in-the-media/HCA in the Media
/news-and-media/events-calendar/Events Calendar
/news-and-media/videos-and-soc...Videos and Social Media
/about-us/governance/Governance
/about-us/working-groups/Working Groups
/biological-networks/Biological Networks
/about-us/industry-partnership...Industry Partners
/about-us/staff/Staff
/about-us/the-hca-archive/The HCA Archive
/about-us/legal-entities/Legal Entities
/learn-more/about-the-human-ce...Text duplicate What is the Human Cell Atlas?
/learn-more/hca-policies-and-p...Text duplicate Policies and Procedures
/learn-more/hca-white-paper/Text duplicate HCA White Paper
/learn-more/global-community/Text duplicate Global Community
/learn-more/join-the-hca/Text duplicate Join the HCA
/learn-more/frequently-asked-q...Text duplicate FAQ
/learn-more/contact/Text duplicate Contact
https://data.humancellatlas.org/New window External Subdomain Text duplicate Atlases & Datasets
/ethics-and-equity/Text duplicate Ethics & Equity
/ethics-and-equity/ethics-work...Text duplicate Ethics Working Group
/ethics-and-equity/equity-work...Text duplicate Equity Working Group
/ethics-and-equity/regional-ne...Text duplicate Regional Networks
/publications/Text duplicate Publications
https://events.humancellatlas....External Subdomain Text duplicate 2025 General Meeting
/news-and-media/Text duplicate News
/news-and-media/hca-in-the-media/Text duplicate HCA in the Media
/news-and-media/events-calendar/Text duplicate Events Calendar
/news-and-media/videos-and-soc...Text duplicate Videos and Social Media
/about-us/governance/Text duplicate Governance
/about-us/working-groups/Text duplicate Working Groups
/biological-networks/Text duplicate Biological Networks
/about-us/industry-partnership...Text duplicate Industry Partners
/about-us/staff/Text duplicate Staff
/about-us/the-hca-archive/Text duplicate The HCA Archive
/about-us/legal-entities/Text duplicate Legal Entities
/learn-more/about-the-human-ce...Why do we need a Human Cell Atlas?
/global-community/Connect with our global community
https://data.humancellatlas.org/External Subdomain Access and analyze cell data
/news-and-media/events-calendar/Attend our meetings and events
/join-the-hca/HCA members
/global-community/more than 100 countries
/learn-more/about-the-human-ce...Learn more about the Human Cell Atlas
/news/human-cell-atlas-achieve...Human Cell Atlas achieves leap in understanding of the human body
/news/human-cell-atlas-achieve...No Text
/news-and-media/More news from HCA
/privacy-policy/Privacy policy
/contact/Text duplicate Contact
/join-the-hca/Text duplicate Join the HCA
https://bsky.app/profile/human...External No Text
https://www.facebook.com/human...External Subdomain No Text
https://www.linkedin.com/compa...External Subdomain No Text
https://twitter.com/humancella...External No Text
https://www.youtube.com/@human...External Subdomain No Text
https://creativecommons.org/li...External Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.humancellatlas.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 0.40 seconds.
The file size of the HTML document is fine (42 kB).

HTTP Response Header

NameValue
varyAccept-Encoding
content-typetext/html; charset=UTF-8
content-encodinggzip
strict-transport-securitymax-age=31536000
dateTue, 15 Apr 2025 09:33:41 GMT
x-xss-protection1; mode=block
x-olaf⛄
accept-rangesbytes
x-content-type-optionsnosniff
last-modifiedMon, 14 Apr 2025 13:04:32 GMT
x-ua-compatibleIE=edge
x-frame-optionsSAMEORIGIN
referrer-policystrict-origin-when-cross-origin
x-clacks-overheadGNU Terry Pratchett
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 1,513 referring domains.
This page has 13,906 backlinks.
This page has backlinks from 939 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

## BaseThemeClass grant access

User-agent: *
Disallow: /wp-content/plugins/
Disallow: /wp-admin/
Sitemap: /sitemap.xml

Similar sites

Search preview

www.humancellatlas.org
Home page

Most important keywords

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

KeywordResultRecheck
Human56%Check
Cell56%Check
Atlas56%Check
Human Cell Atlas56%Check
humancellatlas48%Check
org48%Check
understanding human47%Check
human body47%Check
human cells45%Check
understanding38%Check
Show more keywords and terms

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