Ocean.si.edu - SEO Checker

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Overview of the SEO Check
Meta information
80% 
Page quality
48% 
Page structure
39% 
Link structure
88% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.04 s
File size
241.10 kB
Words
322
Media files
20
Number of links
87 internal / 16 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Smithsonian Ocean | Smithsonian Ocean
There are word repetitions in the page title.
The length of the page title is perfect. (367 pixels out of 580 max pixel length)
Meta description
(Critically important)
The meta description is missing.
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://ocean.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 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
google-site-verificationEHhVi9NpLW-i6l3xwWeuTrJony4MiPte6-EwJe1rTP8
GeneratorDrupal 10 (https://www.drupal.org)
MobileOptimizedwidth
HandheldFriendlytrue
viewportwidth=device-width, initial-scale=1.0
msapplication-TileColor#da532c
theme-color#ffffff
langen
charsetutf-8

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Page quality

Content
(Critically important)
Words from the H1 heading are not used in the page content.
Only 2 paragraph/s was/were found on this page.
There are only 322 words on this page. Good pages should have about 800 words of useful content.
23.6% of the text are stop words.
The page contains a listing, which indicates a good text layout.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 21 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 usage of strong and bold tags is perfect. We recommend the use of up to 6 tags for this page.
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
...ace/images/bg/si_NMNH_rgb_horizontal.svgHome
.../surface/images/bg/Smithsonian_Ocean.svgHome
...arium-zoo-preview.jpg.webp?itok=bHaef8gua trigger fish swims around a coral reef
...5-03/Dunkleosteus.jpg.webp?itok=qMJqjZ0Qa grey, fossilized fish skeleton with a red background
...-Rodriguez-Flores.jpg.webp?itok=IwfXTAxuAn orange crab sits on a mollusc
...2018-05/Sharks_QL.jpg.webp?itok=dd-vhr0TA hammerhead shark swims just underneath the surface of the water.
...s_banner_homepage.jpg.webp?itok=w0NIGxJATwo whales swimming
...18-05/Penguins_QL.jpg.webp?itok=LplgCUAOTwo penguins on a rocky shore.
...eanThroughTime_QL.png.webp?itok=1pN5djmPan ancient ocean seascape
...2018-05/Corals_QL.jpg.webp?itok=HP2Jt_kAA colorful coral reef in blue ocean water.
...urtle-863336_1280.jpg.webp?itok=Qnptw9-oa sea turtle
...018-05/Jellies_QL.jpg.webp?itok=SunzqlQ-An iridescent jellyfish underwater.
...-05/Hurricanes_QL.jpg.webp?itok=BiAsL1w_A satellite image of a hurricane.
...11/MegamouthPhoto.jpg.webp?itok=BqIhwWJOa megamouth shark swims with a diver in the background
...3-11/nielsen2HR_0.jpg.webp?itok=ZXG3TeWFGreenland Shark in cold water
...1176_877778633d_o.jpg.webp?itok=u77bC4bNan old illustration of an eel
..._pontohi_-_1000px.jpg.webp?itok=PiLMJU25A Pontoh pygmy seahorseA Pontoh pygmy seahorse
.../surface/images/bg/Smithsonian-black.svgHome
.../surface/images/bg/Smithsonian_Ocean.svgHome
/themes/custom/surface/images/bg/NMNH.svgHome

Page structure

H1 heading
(Critically important)
The Massive Filter Feeding Shark You Ought to Know
Too many H1 headings
Headings
(Important)
Some headings occur twice on the page.
There are 32 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 The Massive Filter Feeding Shark You Ought to Know
H1 In the Eyes of One Shark, Age is Nothing to Fear
H1 The Origin of Eels
H2 Search
H2 The Incredible Diversity of Fish
H2 The Rise of Vertebrate Innovation in the Devonian
H2 Surprising Squat Lobster Discovery from the Sky
H2 Quicklinks
H2 Featured Content
H2 Daily Catch
H2 Seahorse Colors
H2 Around the Web
H2 Are You An Educator?
H3 Sharks
H3 Whales
H3 Penguins
H3 Ocean Through Time
H3 Corals
H3 Sea Turtles
H3 Jellyfish & Comb Jellies
H3 Hurricanes Typhoons & Cyclones
H3 Dirty, Crevassed Glaciers in Alaska
H3 History and Seaports in Charleston
H3 Dry Season Fires in Australia
H3 The Eastern Caribbean Is Swamped by a Surge of Seaweed
H3 Roving Exhibit Highlights Ocean Plastics Problem
H4 Ocean Leadership
H4 Ocean Leadership Duplicate text
H4 Ocean Leadership Duplicate text
H4 Ocean Leadership Duplicate text
H4 Ocean Leadership Duplicate text
H4 Explore
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.
None of the anchor texts is too long.
There are 16 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://ocean.si.edu/Anchor Skip to main content
https://naturalhistory.edu/External IMG-ALT Home
https://www.facebook.com/Ocean...New window External Subdomain No Text
https://www.flickr.com/groups/...New window External Subdomain flickr
https://support.si.edu/site/Do...New window External Subdomain Donate
https://ocean.si.edu/Text duplicate IMG-ALT Home
https://ocean.si.edu/ocean-lifeOcean Life
/ocean-life/marine-mammalsMarine Mammals
/ocean-life/sharks-raysSharks & Rays
/ocean-life/reptilesReptiles
/ocean-life/seabirdsSeabirds
/ocean-life/fishFish
/ocean-life/invertebratesInvertebrates
/ocean-life/planktonPlankton
/ocean-life/plants-algaePlants & Algae
/ocean-life/microbesMicrobes
https://ocean.si.edu/ecosystemsEcosystems
/ecosystems/coral-reefsCoral Reefs
/ecosystems/deep-seaDeep Sea
/ecosystems/coasts-shallow-waterCoasts & Shallow Water
/ecosystems/polesPoles
/ecosystems/census-marine-lifeCensus of Marine Life
https://ocean.si.edu/planet-oceanPlanet Ocean
/planet-ocean/tides-currentsTides & Currents
/planet-ocean/waves-storms-tsu...Waves, Storms & Tsunamis
/planet-ocean/seafloorThe Seafloor
/planet-ocean/temperature-chem...Temperature & Chemistry
https://ocean.si.edu/through-timeThrough Time
/through-time/ancient-seasAncient Seas
/through-time/extinctionsExtinctions
/through-time/evolutionEvolution
/through-time/anthropoceneThe Anthropocene
https://ocean.si.edu/conservationConservation
/conservation/fishingFishing
/conservation/pollutionPollution
/conservation/habitat-destructionHabitat Destruction
/conservation/invasive-speciesInvasive Species
/conservation/acidificationAcidification
/conservation/climate-changeClimate Change
/conservation/gulf-oil-spillGulf Oil Spill
/conservation/solutions-succes...Solutions & Success Stories
/conservation/get-involvedGet Involved
/human-connectionsHuman Connections
/human-connections/books-film-...Books, Film & The Arts
/human-connections/recreationRecreation
/human-connections/seafoodSeafood
/human-connections/explorationExploration
/human-connections/history-cul...History & Cultures
/human-connections/careersCareers
https://ocean.si.edu/museumAt The Museum
/educators-cornerEducators
/ocean-life/fish/incredible-di...IMG-ALT a trigger fish swims around a coral reef
/ocean-life/fish/incredible-di...The Incredible Diversity of Fish
/through-time/bony-beginnings-...IMG-ALT a grey, fossilized fish skeleton with a red background
/through-time/bony-beginnings-...The Rise of Vertebrate Innovation in the Devonian
/conservation/gulf-oil-spill/s...IMG-ALT An orange crab sits on a mollusc
/conservation/gulf-oil-spill/s...Surprising Squat Lobster Discovery from the Sky
/ocean-life/sharks-rays/sharksIMG-ALT A hammerhead shark swims just underneath the surface of the water.
/ocean-life/sharks-rays/sharksSharks
/ocean-life/marine-mammals/whalesIMG-ALT Two whales swimming
/ocean-life/marine-mammals/whalesWhales
/ocean-life/seabirds/penguinsIMG-ALT Two penguins on a rocky shore.
/ocean-life/seabirds/penguinsPenguins
/through-time/ocean-through-timeIMG-ALT an ancient ocean seascape
/through-time/ocean-through-timeOcean Through Time
/ocean-life/invertebrates/cora...IMG-ALT A colorful coral reef in blue ocean water.
/ocean-life/invertebrates/cora...Corals
/ocean-life/reptiles/sea-turtlesIMG-ALT a sea turtle
/ocean-life/reptiles/sea-turtlesSea Turtles
/ocean-life/invertebrates/jell...IMG-ALT An iridescent jellyfish underwater.
/ocean-life/invertebrates/jell...Jellyfish & Comb Jellies
/planet-ocean/waves-storms-tsu...IMG-ALT A satellite image of a hurricane.
/planet-ocean/waves-storms-tsu...Hurricanes Typhoons & Cyclones
/contributors/danielle-olsonDanielle Olson
/contributors/danielle-olsonText duplicate Danielle Olson
/contributors/danielle-olsonText duplicate Danielle Olson
/ocean-life/invertebrates/how-...IMG-ALT A Pontoh pygmy seahorse
/ocean-life/invertebrates/how-...Seahorse Colors
https://earthobservatory.nasa....External Subdomain Dirty, Crevassed Glaciers in Alaska
https://earthobservatory.nasa....External Subdomain History and Seaports in Charleston
https://earthobservatory.nasa....External Subdomain Dry Season Fires in Australia
https://www.hakaimagazine.com/...External Subdomain The Eastern Caribbean Is Swamped by a Surge of Seaweed
http://oceanleadership.org/rov...External Roving Exhibit Highlights Ocean Plastics Problem
/educators-cornerSee Lesson Plans
https://si.edu/External Text duplicate IMG-ALT Home
https://ocean.si.edu/Text duplicate IMG-ALT Home
https://www.facebook.com/Ocean...New window External Subdomain Facebook
https://www.flickr.com/groups/...New window External Subdomain Text duplicate flickr
https://ocean.si.edu/contactContact Us
https://ocean.si.edu/ocean-lifeText duplicate Ocean Life
https://ocean.si.edu/ecosystemsText duplicate Ecosystems
https://ocean.si.edu/planet-oceanText duplicate Planet Ocean
https://ocean.si.edu/through-timeText duplicate Through Time
https://ocean.si.edu/conservationText duplicate Conservation
/human-connectionsText duplicate Human Connections
https://ocean.si.edu/museumAt the Museum
/educators-cornerText duplicate Educators
/about-ocean-portalAbout
/search?search_api_fulltext&f[...Media Archive
https://www.si.edu/termsofuseExternal Subdomain Terms of Use
https://www.si.edu/privacyExternal Subdomain Privacy
https://naturalhistory.si.edu/External Subdomain Text duplicate IMG-ALT Home
https://support.si.edu/site/Do...External Subdomain Text duplicate Donate

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://ocean.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 0.04 seconds.
The file size of the HTML document is fine (241 kB).

HTTP Response Header

NameValue
cache-controlmax-age=43200, public
content-encodinggzip
content-languageen
content-typetext/html; charset=UTF-8
etagW/"1745699451"
expiresSun, 19 Nov 1978 05:00:00 GMT
last-modifiedSat, 26 Apr 2025 20:30:51 GMT
servernginx
strict-transport-securitymax-age=300
x-content-type-optionsnosniff
x-drupal-cacheMISS
x-drupal-dynamic-cacheHIT
x-frame-optionsSAMEORIGIN
x-generatorDrupal 10 (https://www.drupal.org)
x-pantheon-styx-hostnamestyx-fe3-a-c798d7749-j4lb9
x-styx-req-id582bcfcd-22dd-11f0-b0b0-fa3a154d5980
dateSun, 27 Apr 2025 05:07:38 GMT
x-served-bycache-chi-klot8100168-CHI, cache-fra-eddf8230169-FRA
x-cacheHIT, HIT
x-cache-hits37, 0
x-timerS1745730459.757765,VS0,VE5
varyAccept-Encoding, Cookie, Cookie, Cookie
age31007
accept-rangesbytes
via1.1 varnish, 1.1 varnish
content-length75881
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 10,099 referring domains.
This page has 104,739 backlinks.
This page has backlinks from 4,815 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

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Search preview

Most important keywords

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

KeywordResultRecheck
Ocean70%Check
Smithsonian Ocean60%Check
Shark58%Check
Ocean Life53%Check
Planet Ocean53%Check
Ought52%Check
Massive50%Check
Filter50%Check
Feeding50%Check
Know50%Check
Show more keywords and terms

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