Nationalzoo.si.edu - SEO Checker

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Overview of the SEO Check
Meta information
77% 
Page quality
74% 
Page structure
5% 
Link structure
82% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.06 s
File size
139.30 kB
Words
1050
Media files
25
Number of links
128 internal / 23 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Smithsonian's National Zoo and Conservation Biology Institute
The length of the page title is perfect. (557 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Always free of charge, the Smithsonian’s National Zoo is one of Washington D.C.’s, and the Smithsonian’s, most popular tourist destinations, with more than 2 million visitors from all over the world each year. The Zoo instills a lifelong commitment to conservation through engaging experiences with animals and the people working to save them.
The meta description is too long: 2114 pixels from max. 1000 pixels. Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://nationalzoo.si.edu/
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)
The alternate link to the page itself is invalid.
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
descriptionAlways free of charge, the Smithsonian’s National Zoo is one of Washington D.C.’s, and the Smithsonian’s, most popular tourist destinations, with more than 2 million visitors from all over the world each year. The Zoo instills a lifelong commitment to conservation through engaging experiences with animals and the people working to save them.
generatorDrupal 9 (https://drupal.org)
parsely-titleHome
parsely-linkhttps://nationalzoo.si.edu/other/home
parsely-typepage
parsely-sectionhome
GeneratorDrupal 10 (https://www.drupal.org)
MobileOptimizedwidth
HandheldFriendlytrue
viewportwidth=device-width, initial-scale=1.0
langen
twitter:cardsummary_large_image
twitter:titleHome
twitter:site@NationalZoo
twitter:imagehttps://nationalzoo.si.edu/sites/default/files/styles/large/public/animals/lowlandgorilla-004.jpg
charsetutf-8

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Page quality

Content
(Critically important)
Words from the H1 heading are not used in the page content.
There are 2 text duplicates on this page:
  • Duplicate: Great news! We're exploring a wildly new way to book your Zoo Passes. ...
This page contains 1050 words. That's ok.
27.9% 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.
24 paragraphs were found on this page.
No placeholders texts or images were found.
The average number of words per sentence of 14.05 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=1.0" is provided.
Bold and strong tags
(Somewhat important)
The following tag is repeated too often: today's hours:
Image SEO
(Somewhat important)
Alt text (alternative text) is correctly used on all found images.
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/default/files/2025-01/panda-bamboo.pngillustration of a Giant Panda holding a cane of bamboo
/themes/custom/tailwind_nzp/logo.svgHome
...s/default/files/2025-01/panda-bamboo.pngillustration of a Giant Panda holding a cane of bamboo
...files/2025-01/20241030-817A8773-16RP.jpgGiant panda Bao Li in his outdoor habitat Oct. 30, 2024. Photo credit: Roshan Patel/Smithsonian's National Zoo and Conservation Biology Institute.Giant panda Bao Li in his outdoor habitat Oct. 30, 2024. Photo credit: Roshan Patel/Smithsonian's National Zoo and Conservation Biology Institute.
...-fp9a4264-002rp-red-panda-chris-anne.jpgRed panda Chris-Anne eats bamboo in her outdoor habitat.
...oreole-gift.png?h=5c35a453&itok=ZOsgzY9RAn image of a Baltimore Oriole opening a red and green gift box.
...tion_banner.jpg?h=8165685c&itok=f0iyFlQwA scientist recording wildlife in a tree canopy
...les/paragraphs/single_image/img_5466.jpgTwo conservation ecologists set up a camera trap at the American Prairie Reserve in Montana
...aoLiHP-crop.jpg?h=66071fa9&itok=9SytNhrMGiant panda Bao Li eats bamboo in his yard at the National Zoo.
...t's-Wallaby.jpg?h=0cd817c1&itok=AkTYrPANSmall Mammal House keeper Chelia Chong conducts a training session with a Bennett's wallaby. Credit: Roshan Patel/SmithsonianSmall Mammal House keeper Chelia Chong conducts a training session with a Bennett's wallaby. Credit: Roshan Patel/Smithsonian
...-05RP-crop2.jpg?h=c9a3a702&itok=t9Df2vd4Black-footed ferret Aristides at SCBI, star of he black-footed ferret cam, in Front Royal, Virginia.
...-046SB-crop.jpg?h=c9a3a702&itok=hMK8MjXJvisitors interact with a sea lion at the National Zoo
...7A0107-18RP.jpg?h=8165685c&itok=Rza3FGNIA male giant panda resting on a rock.
.../camp/sumatrantiger-15.jpg?itok=e2I_CfwASumatran tiger
...0708-016NM.jpeg?h=42f270f4&itok=aUg3AiaMBrown alpaca messily eating a frozen orange popsicle
...10TB-teaser.jpg?h=943d1a94&itok=DboE6oObA mother and baby zebra standing in front of a fence in a grassy field.
...male-teaser.jpg?h=0cd817c1&itok=tiXdA2ENAn adult female northern shoveler. Credit: Roshan Patel/Smithsonian
...hick-teaser.jpg?h=0cd817c1&itok=3mxX0M7oWhooping crane chick at the Smithsonian Conservation Biology Institute. Credit: Chris Crowe/Smithsonian.
...3SB-resized.jpg?h=8165685c&itok=GXf6oIlkVisitors hang out on the grassy lawn near the Bird House.
...7A7417-79RP.jpg?h=8165685c&itok=ti9656pzSide view of the head and body of a corn snake
...7A8505-36RP.jpg?h=8165685c&itok=aIOnkHQzA Zoo educator interacts with a toddler.
...e Dog Clean.png?h=266b07de&itok=1XEre3c_A prairie dog peeks its body out of a burrow. The scene is illuminated by a golden sunrise, casting warm colors over the animal and surrounding prairie.
...es/default/files/smb_website_9_24-02.pngThree songbirds perched on a tree branch with leafy trees in the backgroudn
/sites/default/files/cheetah-cubs-block.jpgA group of zoo aides and keepers wearing personal protective equipment and navy scrubs holds up five tiny cheetah cubs.
...2025-07/EMP_SER_Session_05292025-12e.jpgA selection of zoo-themed books laid out in front of the Bird House.

Page structure

H1 heading
(Critically important)
Welcome to the website of the Smithonian's National Zoo and Conservation Biology Institute
The H1 heading contains the words Welcome to! Use important keywords instead.
Too many H1 headings
Headings
(Important)
Some headings occur twice on the page.
There are 40 headings on the page. The amount of headings should be in a more proper relation to the amount of text.

Heading structure

Heading levelContent
H1 Welcome to the website of the Smithonian's National Zoo and Conservation Biology Institute
H1 Welcome to Smithsonian's National Zoo
H1 Happy National Zookeeper Week
H1 The Black-Footed Ferret Cam Is Back
H1 Know Before You Go
H2 Before you Continue...
H2 Before you Continue... Duplicate text
H2 Mega menu
H2 Animals Global Nav Links
H2 Support Global Nav Links
H2 Membership Global Nav Links
H2 Education Global Nav Links
H2 Conservation Global Nav Links
H2 UPCOMING EVENTS
H2 LATEST STORIES
H2 Live Animal Cams
H2 Webcams Menu
H2 Live Bird Friendly® and Support Birds
H2 We Save Species
H2 Explore Our Online Gift Shop
H2 About the Zoo
H2 Careers
H2 News & Media
H2 Footer Donate
H2 Shop
H2 Follow us on social media
H2 Sign Up for Emails
H2 Footer - SI logo, privacy, terms
H3 Bao Li's 4th Birthday
H3 International Cat Day
H3 Keeping the Farm Animals Cool With Frozen Treats
H3 New Foals Born at Conservation Campus
H3 Historic Hatching: Northern Shoveler Ducklings
H3 Meet Our Rare Whooping Crane Chick
H3 The Hidden Architecture Behind the Bird House's Garden
H3 How Do Snakes Move Without Legs?
H3 With 'Little Critters', Kids Can Play Hands-On With Nature
H3 Study: When Prairie Dogs Call, Birds Are Eavesdropping
H3 Contact Us
H3 Address
Some internal link anchor texts are too long.
Some anchor texts are used more than once.
There are 1 links with a trivial anchor text.
The number of internal links is ok.
All internal links are not using dynamic parameters.
There are 23 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://nationalzoo.si.edu/Anchor Skip to main content
/animals/news/tips-making-most...Read our tips for beating the summer heat
/membershipJoin
https://secure.nationalzoo.si....External Subdomain Donate
https://nationalzoo.si.edu/IMG-ALT Home
/membershipText duplicate Join
https://secure.nationalzoo.si....External Subdomain Text duplicate Donate
https://nationalzoo.si.edu/visitVisit
A-TITLE Visit
https://nationalzoo.si.edu/visitText duplicate Visit
/visit/hoursHours
https://secure.nationalzoo.si....External Subdomain Entry Passes (Tickets)
/visit/parking-directionsParking & Directions
/visit/groupsGroups
/visit/zoo-mapZoo Map
/visit/park-rulesSafety and Park Rules
/visit/faqsFAQs About Visiting the Zoo
/visit/foodFood & Shopping
/visit/accessibility-and-senso...Accessibility
/visit/eventsEvents
/visit/attractionsAttractions
/animals/exhibitsExhibits
/animals/listAnimals A-Z
/support/host-event-zooHost an Event at the Zoo
/visit/animal-adventure-guideAnimal Adventure Guide
/animalsAnimals
A-TITLE animals
/animalsText duplicate Animals
/animals/exhibitsText duplicate Exhibits
/webcamsWebcams
/animals/animal-careAnimal Care
/conservationConservation
/animals/newsAnimal News Archive
/node/16392Image:
IMG-ALT Giant panda Bao Li in his outdoor habitat Oct. 30, 2024. Photo credit: Roshan Patel/Smithsonian's National Zoo and Conservation Biology Institute.
/webcams/panda-camGiant Panda Cam
A-TITLE Giant Panda Cam
/supportSupport
A-TITLE Support
/supportText duplicate Support
https://secure.nationalzoo.si....External Subdomain Text duplicate Donate
/support/volunteerVolunteer
/support/planned-givingInclude Us in Your Will
/support/corporate-givingCorporate Giving
/support/make-your-contributio...Matching Gifts
https://secure.nationalzoo.si....External Subdomain Text duplicate Image:
IMG-ALT Red panda Chris-Anne eats bamboo in her outdoor habitat.
https://secure.nationalzoo.si....External Subdomain Give Today
/membershipMembership
A-TITLE Membership
/membershipText duplicate Membership
/membershipBecome a Member
/membershipRenew Your Membership
https://secure.nationalzoo.si....External Subdomain Manage Account
/membershipMembership FAQs
/membership/circle-councilCircle & Council Memberships
/membershipIMG-ALT An image of a Baltimore Oriole opening a red and green gift box.
/membershipBuy a Gift Membership
/educationEducation
A-TITLE Education
/educationText duplicate Education
/education/kids-and-familiesKids, Families, and Schools
/education/teensTeens
/education/adults-and-educatorsAdults and Educators
/education/plan-field-tripPlan a Field Trip
/education/virtual-programs-ca...IMG-ALT A scientist recording wildlife in a tree canopy
/education/virtual-programs-ca...Education Calendar
/conservationText duplicate Conservation
A-TITLE Conservation
/conservationText duplicate Conservation
/conservation/about-scbiAbout SCBI
https://nationalzoo.si.edu/ccsConservation and Sustainability
/center-for-conservation-genomicsConservation Genomics
/conservation-ecology-centerConservation Ecology
/center-for-species-survivalSpecies Survival
/conservation/field-focus-vide...Field in Focus Video Series
/global-health-programGlobal Health Program
/conservation/great-plains-sci...Great Plains Science
/migratory-birdsMigratory Bird Center
/conservation/related-conserva...Related Programs
/animals/scbi-animalsSCBI Animals
https://smconservation.gmu.edu/External Subdomain Smithsonian-Mason School of Conservation
/virginia-working-landscapesVirginia Working Landscapes
/conservation/about-scbiText duplicate Image:
IMG-ALT Two conservation ecologists set up a camera trap at the American Prairie Reserve in Montana
/conservation/about-scbiAbout the Smithsonian Conservation Biology Institute
https://secure.nationalzoo.si....External Subdomain Welcome to Smithsonian's National Zoo
https://secure.nationalzoo.si....External Subdomain Get Your Free Passes
/animals/news/happy-national-z...Happy National Zookeeper Week
/animals/news/happy-national-z...Trivial anchor text
Read More
/webcams/black-footed-ferret-camThe Black-Footed Ferret Cam Is Back
/webcams/black-footed-ferret-camWatch the Webcam
https://nationalzoo.si.edu/visitKnow Before You Go
https://nationalzoo.si.edu/visitPlan Your Visit
/visit/hoursText duplicate Hours
https://secure.nationalzoo.si....External Subdomain Entry Passes
/visit/parking-directionsText duplicate Parking & Directions
/animals/exhibitsAnimal Exhibits
/visit/zoo-mapText duplicate Zoo Map
/visit/eventsText duplicate Events
/visit/events/bao-lis-4th-birt...IMG-ALT A male giant panda resting on a rock.
/visit/events/bao-lis-4th-birt...Bao Li's 4th Birthday
/visit/events/bao-lis-4th-birt...Learn More
/visit/events/international-ca...IMG-ALT Sumatran tiger
/visit/events/international-ca...International Cat Day
/visit/events/international-ca...Text duplicate Learn More
/animals/news/keeping-farm-ani...IMG-ALT Brown alpaca messily eating a frozen orange popsicle
/animals/news/keeping-farm-ani...Keeping the Farm Animals Cool With Frozen Treats
/animals/news/checking-foals-n...IMG-ALT A mother and baby zebra standing in front of a fence in a grassy field.
/animals/news/checking-foals-n...New Foals Born at Conservation Campus
/animals/news/historic-hatchin...IMG-ALT An adult female northern shoveler. Credit: Roshan Patel/Smithsonian
/animals/news/historic-hatchin...Historic Hatching: Northern Shoveler Ducklings
/animals/news/meet-our-rare-wh...IMG-ALT Whooping crane chick at the Smithsonian Conservation Biology Institute. Credit: Chris Crowe/Smithsonian.
/animals/news/meet-our-rare-wh...Meet Our Rare Whooping Crane Chick
/animals/news/hidden-architect...IMG-ALT Visitors hang out on the grassy lawn near the Bird House.
/animals/news/hidden-architect...The Hidden Architecture Behind the Bird House's Garden
/news/news/how-do-snakes-move-...IMG-ALT Side view of the head and body of a corn snake
/news/news/how-do-snakes-move-...How Do Snakes Move Without Legs?
/news/news/little-critters-dro...IMG-ALT A Zoo educator interacts with a toddler.
/news/news/little-critters-dro...With 'Little Critters', Kids Can Play Hands-On With Nature
/news/predator-alerts-bring-to...IMG-ALT A prairie dog peeks its body out of a burrow. The scene is illuminated by a golden sunrise, casting warm colors over the animal and surrounding prairie.
/news/predator-alerts-bring-to...Study: When Prairie Dogs Call, Birds Are Eavesdropping
/news/archiveMore News
/webcams/panda-camPanda Cam
/webcams/black-footed-ferret-camBlack-footed Ferret Cam
/webcams/elephantsElephant Cam
/webcams/lion-camLion Cam
/webcams/naked-mole-rat-camNaked Mole-rat Cam
/migratory-birds/bird-friendlyText duplicate Image:
IMG-ALT Three songbirds perched on a tree branch with leafy trees in the backgroudn
/migratory-birds/bird-friendlyLive Bird Friendly® and Support Birds
/migratory-birds/bird-friendlyLearn more
/conservationText duplicate Image:
IMG-ALT A group of zoo aides and keepers wearing personal protective equipment and navy scrubs holds up five tiny cheetah cubs.
/conservationWe Save Species
/conservationOur Conservation Work
https://www.smithsonianstore.c...External Subdomain Text duplicate Image:
IMG-ALT A selection of zoo-themed books laid out in front of the Bird House.
https://www.smithsonianstore.c...External Subdomain Explore Our Online Gift Shop
https://www.smithsonianstore.c...External Subdomain Visit the Store
/about/contact-usGeneral contact form
/form/help-us-improve-our-websiteSite feedback
https://nationalzoo.si.edu/aboutGeneral Info
/about/historyHistory
/about/strategic-planStrategic Plan
/about/boardBoard
/about/staffStaff
/careersJobs
/careers/internshipsInternships
/support/volunteerText duplicate Volunteer
https://nationalzoo.si.edu/newsNewsroom
/news/press-release-archivePress Releases
/news/filming-requestsFilming Requests
/news/neighborhood-newsNeighborhood News
https://secure.nationalzoo.si....External Subdomain Text duplicate Donate
https://www.smithsonianstore.c...External Subdomain Shop
https://www.facebook.com/natio...External Subdomain facebook
https://x.com/nationalzooExternal twitter
https://instagram.com/smithson...External instagram
https://www.youtube.com/Smiths...External Subdomain YouTube
https://www.si.edu/External Subdomain Smithsonian
https://www.si.edu/privacyExternal Subdomain Privacy
https://www.si.edu/termsofuseExternal Subdomain Terms of Use
/about/terms-of-saleTerms of Sale

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://nationalzoo.si.edu/"
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 0.06 seconds.
The file size of the HTML document is fine (139 kB).

HTTP Response Header

NameValue
cache-controlmax-age=900, public
content-encodinggzip
content-languageen
content-typetext/html; charset=UTF-8
etagW/"1753482031"
expiresSun, 19 Nov 1978 05:00:00 GMT
last-modifiedFri, 25 Jul 2025 22:20:31 GMT
servernginx
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x-content-type-optionsnosniff
x-drupal-cacheMISS
x-drupal-dynamic-cacheMISS
x-generatorDrupal 10 (https://www.drupal.org)
x-pantheon-styx-hostnamestyx-fe3-a-6bc7754f9b-gzpb4
x-styx-req-id93a22021-69a5-11f0-98a8-8e62f74cbbc8
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x-frame-optionsSAMEORIGIN
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x-cacheHIT, HIT, MISS, MISS
x-cache-hits12, 3, 0, 0
x-timerS1753485160.584086,VS0,VE8
varyAccept-Encoding, Cookie, Cookie, Cookie
content-length32961
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 1,619 referring domains.
This page has 10,736 backlinks.
This page has backlinks from 1,326 different ip addresses.

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: *
# CSS, JS, Images
Allow: /core/*.css$
Allow: /core/*.css?
Allow: /core/*.js$
Allow: /core/*.js?
Allow: /core/*.gif
Allow: /core/*.jpg
Allow: /core/*.jpeg
Allow: /core/*.png
Allow: /core/*.svg
Allow: /profiles/*.css$
Allow: /profiles/*.css?
Allow: /profiles/*.js$
Allow: /profiles/*.js?
Allow: /profiles/*.gif
Allow: /profiles/*.jpg
Allow: /profiles/*.jpeg
Allow: /profiles/*.png
Allow: /profiles/*.svg
# Directories
Disallow: /core/
Disallow: /profiles/
# Files
Disallow: /README.md
Disallow: /composer/Metapackage/README.txt
Disallow: /composer/Plugin/ProjectMessage/README.md
Disallow: /composer/Plugin/Scaffold/README.md
Disallow: /composer/Plugin/VendorHardening/README.txt
Disallow: /composer/Template/README.txt
Disallow: /modules/README.txt
Disallow: /sites/README.txt
Disallow: /themes/README.txt
Disallow: /web.config
# Paths (clean URLs)
Disallow: /admin/
Disallow: /comment/reply/
Disallow: /filter/tips
Disallow: /node/add/
Disallow: /search/
Disallow: /user/register
Disallow: /user/password
Disallow: /user/login
Disallow: /user/logout
Disallow: /media/oembed
Disallow: /*/media/oembed
# Paths (no clean URLs)
Disallow: /index.php/admin/
Disallow: /index.php/comment/reply/
Disallow: /index.php/filter/tips
Disallow: /index.php/node/add/
Disallow: /index.php/search/
Disallow: /index.php/user/password
Disallow: /index.php/user/register
Disallow: /index.php/user/login
Disallow: /index.php/user/logout
Disallow: /index.php/media/oembed
Disallow: /index.php/*/media/oembed

# Custom Additions
Disallow: /*?field_product_roast_properties_target_id
Disallow: /*?fbclid

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nationalzoo.si.edu
Smithsonian's National Zoo and Conservation Biology Institute
Always free of charge, the Smithsonian’s National Zoo is one of Washington D.C.’s, and the Smithsonian’s, most popular tourist destinations, with more than 2 million visitors from all over the world each year. The Zoo instills a lifelong commitment to conservation through engaging experiences with animals and the people working to save them.

Most important keywords

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

KeywordResultRecheck
Zoo95%Check
National95%Check
National Zoo95%Check
National Zoo Conservation89%Check
National Zoo Conservation Biology83%Check
Conservation80%Check
Conservation Biology75%Check
Zoo Conservation Biology Institute75%Check
Conservation Biology Institute72%Check
Smithsonian's National Zoo Conservation72%Check
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