Zsl.org - SEO Checker

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Overview of the SEO Check
Meta information
100% 
Page quality
68% 
Page structure
58% 
Link structure
88% 
Server
68% 
External factors
100% 
SEO Score
Response time
0.10 s
File size
307.80 kB
Words
1133
Media files
41
Number of links
87 internal / 12 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
ZSL | A science-driven conservation charity
The length of the page title is perfect. (387 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
We're ZSL - an international conservation charity driven by science, working to restore wildlife in the UK and around the world. Become a supporter today.
The length of the meta description is perfect. (946 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.zsl.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
Content-Typetext/html; charset=UTF-8
viewportwidth=device-width, initial-scale=1
descriptionWe're ZSL - an international conservation charity driven by science, working to restore wildlife in the UK and around the world. Become a supporter today.
msapplication-TileColor#002010
msapplication-config/zsl/browserconfig.xml
msapplication-square70x70logo/zsl/mstile-70x70.png
msapplication-square150x150logo/zsl/mstile-150x150.png
msapplication-wide310x150logo/zsl/mstile-310x150.png
msapplication-square310x310logo/zsl/mstile-310x310.png
theme-color#002010
next-head-count31
langen
twitter:cardsummary_large_image
twitter:titleZSL | A science-driven conservation charity
twitter:descriptionWe're ZSL - an international conservation charity driven by science, working to restore wildlife in the UK and around the world. Become a supporter today.
twitter:imagehttps://cms.zsl.org/sites/default/files/styles/responsive/public/1024/1024/0/2023-01/baby-cheetah.jpg
og:titleZSL | A science-driven conservation charity
og:descriptionWe're ZSL - an international conservation charity driven by science, working to restore wildlife in the UK and around the world. Become a supporter today.
og:urlhttps://www.zsl.org
og:imagehttps://cms.zsl.org/sites/default/files/styles/responsive/public/1024/1024/0/2023-01/baby-cheetah.jpg

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Page quality

Content
(Critically important)
Some words from the page title are not used within the pages content
This page contains 1133 words. That's ok.
37% of the text are stop words.
Words from the H1 heading are used in the page content.
The page contains a listing, which indicates a good text layout.
27 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 21.11 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
This page loads 17 JavaScript files. This may affect the load time negatively.
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 23 tags for this page.
Image SEO
(Somewhat important)
16 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
/Logo/ZSL-logo-mobile.svgThe Zoological Society of London Home
data:[...] Base64Pangolin curled up
data:[...] Base64Two people planting mangrove trees as part of ZSL restoration project.
data:[...] Base64Nature guide for ZSL driving conservation in Asia
data:[...] Base64Gorilla at London Zoo Gorilla Kingdom
data:[...] Base64No alt attribute provided
data:[...] Base64Female Hainan gibbon with infant
data:[...] Base64No alt attribute provided
data:[...] Base64Pangolin close-up in a desert
data:[...] Base64No alt attribute provided
data:[...] Base64Partula affinis checked over at ZSL London Zoo by Dave Clarke, snail is sitting on his finger
data:[...] Base64No alt attribute provided
data:[...] Base64Hazel dormouse close-up, dark circular eyes with rosy orange fur
data:[...] Base64No alt attribute provided
data:[...] Base64Tiger walking in the wild in Nepal photographed by a camera trap
data:[...] Base64No alt attribute provided
data:[...] Base64Mangrove forest planting
data:[...] Base64No alt attribute provided
data:[...] Base64ZSL conservationist looking out at steppe habitat with binoculars on top of mountain in Mongolia,
data:[...] Base64No alt attribute provided
data:[...] Base64Baby pangolin on grass close-up
data:[...] Base64No alt attribute provided
data:[...] Base64No alt attribute provided
data:[...] Base64Black rhino, hooked up lip can be seen which is main difference with white rhino
data:[...] Base64No alt attribute provided
data:[...] Base64Nature guide for ZSL driving conservation in Asia
data:[...] Base64No alt attribute provided
data:[...] Base64Tope shark
data:[...] Base64No alt attribute provided
data:[...] Base64A three-toed pygmy sloth climbing a tree
data:[...] Base64No alt attribute provided
data:[...] Base64Male hihi close-up black head with a white streak, and yellow streaks along body
data:[...] Base64No alt attribute provided
data:[...] Base64Oysters covering a surface like a mosaic
data:[...] Base64Red kite health check by ZSL scientists
data:[...] Base64Asiatic lion male lying down in wild at a chickpea field
data:[...] Base64ZSL conservationist looking out with binoculars across Mongolian steppe plains
data:[...] Base64Pangolin standing in a savannah habitat
data:[...] Base64No alt attribute provided
data:[...] Base64Zebra homeware collection by ZSL
Video URLWidthHeight
...efault/files/2023-02/15 second edit2.mp4

Page structure

H1 heading
(Critically important)
A world where wildlife thrives
The H1 heading is perfect.
Headings
(Important)
Some headings occur twice on the page.
The structure of headings is missing one or more levels. Do not skip heading levels.
There are 33 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 A world where wildlife thrives
H2 Helping people and wildlife live better together
H2 Fighting for our world
H2 Stand up for nature
H2 Our impact
H2 Making a difference for wildlife
H2 Where we work
H2 Find out more about ZSL
H2 Our online shop
H2 Keep in touch
H3 Protecting Species
H3 Restoring Eco-systems
H3 Living with Wildlife
H3 Inspiring Change
H3 Hainan gibbon conservation
H3 Pangolins
H3 Partula snail conservation
H3 Recovering UK wildlife
H3 Nepal’s tiger population more than doubles
H3 Recovering mangrove forests
H3 Illegal wildlife trade in Mongolia
H3 Baby pangolin rescued from poachers
H3 Conservation in Africa
H3 Conservation in Asia
H3 Conservation in UK and Europe
H3 Conservation in Americas
H3 Conservation in Oceania
H3 Marine and freshwater
H3 Science & Research
H3 Conservation
H3 Where we work Duplicate text
H3 Species we work with
H3 Gifts for wildlife lovers
H5 Empty heading
Some anchor texts are used more than once.
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 12 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://www.zsl.org/IMG-ALT The Zoological Society of London Home
https://donate.zsl.org/donations/External Donate
https://www.londonzoo.org/New window External London Zoo
A-TITLE London Zoo
https://www.whipsnadezoo.org/New window External Whipsnade Zoo
A-TITLE Whipsnade Zoo
https://shop.zsl.org/External Shop
https://www.zsl.org/support-usSupport ZSL
/what-we-do/conservationConservation
/what-we-do/science-researchScience & Research
/what-we-do/institute-of-zoologyInstitute of Zoology
/what-we-do/speciesSpecies
/what-we-do/habitats-and-regionsHabitats & Regions
/what-we-do/education-learningEducation & Learning
/what-we-do/projectsOur Projects
/what-we-do/working-with-businessBusiness & Finance
/what-we-do/our-zoosOur Zoos
https://www.zsl.org/what-we-doAll of what we do
https://shop.zsl.org/External Text duplicate Shop
https://www.zsl.org/support-usText duplicate Support ZSL
/support-us/volunteer-at-zsl/v...Volunteering
/support-us/donateText duplicate Donate
/support-us/back-from-the-brinkJoin our Fight
/support-us/fundraisingFundraise
/support-us/zsl-patronagePatronage
/support-us/fellowshipFellowship
/support-us/zoo-membershipZoo Membership
/support-us/donate/gifts-in-willsGifts in Wills
/support-us/businessBusiness
https://www.zsl.org/support-usSee all Support Us
https://shop.zsl.org/External Text duplicate Shop
https://www.zsl.org/support-usText duplicate Support ZSL
/news-and-events/newsNews
/news-and-events/featureFeatures
/news-and-events/eventsEvents
/news-and-events/podcastsPodcasts
/news-and-events/get-the-zsl-e...E-mail newsletter
/news-and-eventsSee all News & events
https://shop.zsl.org/External Text duplicate Shop
https://www.zsl.org/support-usText duplicate Support ZSL
/about-zsl/organisationOrganisation
/about-zsl/our-peopleOur People
/about-zsl/organisation/zsl-pu...Publications
/about-zsl/awardsAwards
/about-zsl/working-at-zslWorking at ZSL
/about-zsl/resourcesResources
https://www.zsl.org/about-zslSee all About ZSL
https://shop.zsl.org/External Text duplicate Shop
https://www.zsl.org/support-usText duplicate Support ZSL
https://www.zsl.org/support-usBecome a supporter
/news-and-eventsConservation news
/what-we-do/conservation/prote...Discover more
/what-we-do/conservation/resto...Text duplicate Discover more
/what-we-do/conservation/livin...Text duplicate Discover more
/what-we-do/conservation/inspi...Text duplicate Discover more
/what-we-do/projects/hainan-gi...Hainan gibbon conservation
/what-we-do/species/pangolinsPangolins
/what-we-do/projects/partula-s...Partula snail conservation
/what-we-do/species/hazel-dorm...Recovering UK wildlife
/news-and-events/news/nepals-t...Nepal’s tiger population more than doubles
/what-we-do/projects/mangrovesRecovering mangrove forests
/what-we-do/projects/mongolia-...Illegal wildlife trade in Mongolia
/news-and-events/news/baby-pan...Baby pangolin rescued from poachers
https://www.zsl.org/support-usText duplicate Become a supporter
/what-we-do/habitats-and-regio...Conservation in Africa
/what-we-do/habitats-and-regio...Conservation in Asia
/what-we-do/habitats-and-regio...Conservation in UK and Europe
/what-we-do/habitats-and-regio...Conservation in Americas
/what-we-do/habitats-and-regio...Conservation in Oceania
/what-we-do/habitats-and-regio...Marine and freshwater
/what-we-do/science-researchText duplicate Discover more
https://www.zsl.org/what-we-doText duplicate Discover more
/what-we-do/habitats-and-regionsText duplicate Discover more
/what-we-do/conservation/prote...Text duplicate Discover more
https://shop.zsl.org/External Shop for wildlife
/news-and-events/conservation-...Sign up to conservation updates
/about-zsl/policies/zsl-terms-...Site Information
/about-zsl/policies/zsl-privac...Privacy Policy
/about-zsl/policies/zsl-terms-...Terms & Conditions
/about-zsl/policies/zsl-terms-...FAQs
/about-zsl/contact-zslContact Us
/about-zsl/policies/cookie-policyCookie Information
/about-zsl/policies/complaint-...Complaint Policy
https://www.zsl.org/sitemap.xmlSite Map
/about-zsl/policies/modern-sla...Modern Slavery Statement
/what-we-do/institute-of-zoolo...Equality & Diversity Policy
/about-zsl/policies/safeguardi...Safeguarding Policy
/about-zsl/policies/website-ac...Website Accessibility
https://www.zsl.org/node/1Useful Links
/support-us/donateDonate to ZSL
https://www.zsl.org/what-we-doWhat We Do
https://www.zsl.org/support-usSupport Us
/news-and-eventsNews & Events
https://www.zsl.org/about-zslAbout ZSL
/about-zsl/working-at-zslText duplicate Working at ZSL
/what-we-do/education-learning...ZSL Library
/what-we-do/science-researchText duplicate Science & Research
/news-and-events/conservation-...SIGN UP
https://twitter.com/officialzslExternal No Text
https://www.facebook.com/offic...External No Text
https://www.instagram.com/offi...External No Text

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.zsl.org/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
This page loads 17 JavaScript files. This may affect the load time negatively.
The page response time is excellent with 0.10 seconds.
This page only loads 1 CSS files. That's ok.
The file size of the HTML document is fine (308 kB).

HTTP Response Header

NameValue
dateMon, 29 Jan 2024 14:08:17 GMT
content-typetext/html; charset=utf-8
cache-controlpublic, max-age=14400, s-maxage=31536000, stale-while-revalidate=7200, stale-if-error=7200
content-security-policydefault-src 'self' https://www.zsl.org https://cms.zsl.org; object-src 'none'; base-uri 'self'; style-src 'self' https://www.zsl.org https://cms.zsl.org 'unsafe-inline' https://p.typekit.net https://use.typekit.net https://tagmanager.google.com https://www.googletagmanager.com https://fonts.googleapis.com https://static.hotjar.com https://script.hotjar.com https://www.tripadvisor.co.uk https://static.tacdn.com ; font-src 'self' https://www.zsl.org https://cms.zsl.org data: https://p.typekit.net https://use.typekit.net https://fonts.gstatic.com https://fonts.googleapis.com https://script.hotjar.com https://static.tacdn.com ; script-src 'self' https://www.zsl.org https://cms.zsl.org 'nonce-2081435487df497965c551e717933006' 'sha256-ZnhAS6LXLZWmpPSEDrVRkNeIsVEIsRredGkFx2WiKec=' 'sha256-iW4WnuBtxrtQK6YASZph6rx6yZZMg0U77OLIlEZvlDA=' 'sha256-48TuDkUabuH2v1zRqgyqecgn+HRkc9gfpOVMELfgzQI=' 'sha256-U96gVTGDtlmnaK204EbaOTNyZRKvfBiWyuolgJwd8CI=' 'sha256-2L/tFj1yFovfnD4TertAGuww56zrGsGC1JDWaqC75s0=' 'sha256-9HOlWcnxwIXUmTPdnAhre+W8Z0FDeSQmn4+a1GXnQSA=' 'sha256-dKGt8dCuqKR/hwtTSFNbDeXeYUxOjtop6H2SYqoIGvc=' 'sha256-y6gO+OYD2TDPY9r3GtOTvnCs5/oE/O7PmNL2zaGYeJQ=' https://connect.facebook.net https://cookie-cdn.cookiepro.com https://r1.dotdigital-pages.com https://r1-t.trackedlink.net/_dmpt.js https://s.yimg.com/wi/ytc.js https://static.hotjar.com https://script.hotjar.com https://analytics.twitter.com https://static.ads-twitter.com/uwt.js https://www.dwin1.com/15333.js https://www.google-analytics.com https://ssl.google-analytics.com https://*.googletagmanager.com https://tagmanager.google.com https://www.youtube.com https://www.youtube-nocookie.com https://www.googleadservices.com https://googleads.g.doubleclick.net https://www.google.com https://campaign.zsl.org https://reclaimhub.com https://www.tripadvisor.co.uk https://www.tripadvisor.com https://static.tacdn.com https://www.jscache.com https://analytics.tiktok.com https://static.trackedweb.net ; connect-src 'self' https://www.zsl.org https://cms.zsl.org https://cookie-cdn.cookiepro.com https://s.yimg.com https://stats.g.doubleclick.net https://*.google.co.uk https://*.google.com https://*.google-analytics.com https://*.analytics.google.com https://*.googletagmanager.com https://*.hotjar.com https://*.hotjar.io wss://*.hotjar.com https://www.facebook.com/tr/ https://campaign.zsl.org https://analytics.tiktok.com ; frame-src 'self' https://www.zsl.org https://cms.zsl.org data: https://*.fls.doubleclick.net https://vars.hotjar.com https://www.facebook.com https://www.youtube.com https://www.youtube-nocookie.com https://r1.dotdigital-pages.com https://www.arcgis.com https://html5-player.libsyn.com https://campaign.zsl.org https://www.google.com https://bid.g.doubleclick.net https://td.doubleclick.net https://reclaimhub.com https://zsl-london-zoo-timeline.octophindev.com https://cdn.knightlab.com https://my.matterport.com ; frame-ancestors 'self' https://www.zsl.org https://cms.zsl.org https://cms.zsl.org https://www.zsl.org https://cms.londonzoo.org https://www.londonzoo.org https://cms.whipsnadezoo.org https://www.whipsnadezoo.org https://campaign.zsl.org ; img-src 'self' https://www.zsl.org https://cms.zsl.org data: https://analytics.twitter.com https://cookie-cdn.cookiepro.com https://sp.analytics.yahoo.com https://t.co https://www.facebook.com https://www.google-analytics.com https://ssl.gstatic.com https://www.gstatic.com https://fonts.gstatic.com https://*.google-analytics.com https://*.googletagmanager.com https://googleads.g.doubleclick.net https://www.google.com https://www.google.co.uk https://www.google.be https://campaign.zsl.org https://static.hotjar.com https://script.hotjar.com https://i.ytimg.com https://*.fls.doubleclick.net https://ad.doubleclick.net https://*.googlesyndication.com https://www.tripadvisor.co.uk ; upgrade-insecure-requests;
feature-policyautoplay 'self' https://www.zsl.org https://cms.zsl.org; fullscreen *; vertical-scroll 'self';
permissions-policyautoplay=(self "https://www.zsl.org" "https://cms.zsl.org"), fullscreen=*
referrer-policyno-referrer
strict-transport-securitymax-age=31536000
traceresponse00-17aed6468e408c35bafa245f6c0893ff-8badd599f720431b-01
varyAccept-Encoding
x-content-type-optionsnosniff
x-dns-prefetch-controlon
x-frame-optionsSAMEORIGIN
cf-cache-statusHIT
age389
servercloudflare
cf-ray84d20bddaa683808-FRA
content-encodinggzip
statuscode200
http_versionHTTP/2

External factors

Blacklists
(Nice to have)
This website is not classified "for adult only".
This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 9,519 referring domains.
This page has 123,115 backlinks.
This page has backlinks from 5,919 different ip addresses.
Facebook popularity
(Somewhat important)
The page has 0 shares and comments on Facebook.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

#
# robots.txt
#
# This file is to prevent the crawling and indexing of certain parts
# of your site by web crawlers and spiders run by sites like Yahoo!
# and Google. By telling these "robots" where not to go on your site,
# you save bandwidth and server resources.
#
# This file will be ignored unless it is at the root of your host:
# Used:    http://example.com/robots.txt
# Ignored: http://example.com/site/robots.txt
#
# For more information about the robots.txt standard, see:
# http://www.robotstxt.org/robotstxt.html

User-agent: *
Allow: /
# Sitemap reference
Sitemap: https://www.zsl.org/sitemap.xml

# crawl delay
User-agent: *
Crawl-delay: 10

Similar sites

Search preview

www.zsl.org
ZSL | A science-driven conservation charity
We're ZSL - an international conservation charity driven by science, working to restore wildlife in the UK and around the world. Become a supporter today.

Most important keywords

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

KeywordResultRecheck
ZSL77%Check
Conservation68%Check
wildlife66%Check
world66%Check
Wildlife Conservation66%Check
Conservation Charity64%Check
science and conservation63%Check
Science62%Check
conservation work61%Check
driven58%Check
Show more keywords and terms

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