Science.nasa.gov - SEO Checker

Sign up for free! PDF Export
Overview of the SEO Check
Meta information
98% 
Page quality
91% 
Page structure
92% 
Link structure
47% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.13 s
File size
279.90 kB
Words
882
Media files
23
Number of links
19 internal / 48 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Climate Change - NASA Science
The length of the page title is perfect. (295 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
NASA is a global leader in studying Earth’s changing climate.
The length of the meta description is perfect. (374 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://science.nasa.gov/climate-change/
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)
This page is hosted on a subdomain. Use a top level domain for better SEO results.
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
descriptionNASA is a global leader in studying Earth’s changing climate.
robotsfollow, index, max-snippet:-1, max-video-preview:-1, max-image-preview:large
application-nameNASA
msapplication-TileColor#da532c
theme-color#ffffff
msapplication-TileImagehttps://science.nasa.gov/wp-content/plugins/nasa-hds-core-setup/assets/favicons/mstile-144x144.png
msapplication-confighttps://science.nasa.gov/wp-content/plugins/nasa-hds-core-setup/assets/favicons/browserconfig.xml
msapplication-square70x70logohttps://science.nasa.gov/wp-content/plugins/nasa-hds-core-setup/assets/favicons/mstile-70x70.png
msapplication-square150x150logohttps://science.nasa.gov/wp-content/plugins/nasa-hds-core-setup/assets/favicons/mstile-150x150.png
msapplication-wide310x150logohttps://science.nasa.gov/wp-content/plugins/nasa-hds-core-setup/assets/favicons/mstile-310x150.png
msapplication-square310x310logohttps://science.nasa.gov/wp-content/plugins/nasa-hds-core-setup/assets/favicons/mstile-310x310.png
generatorWordPress 6.7.2
searchgov_custom11::55815
searchgov_custom2Empty
searchgov_custom3topic
keywordsClimate Change
google-site-verificationFPf3JviUYpAZPGOV51pOmZC43TaCwVffwZYQyzLfK-M
article:publisherhttps://www.facebook.com/NASA
article:sectionClimate Change
article:published_time2023-06-16T13:25:17-04:00
article:modified_time2025-02-06T16:10:00-05:00
ya:ovs:upload_date2023-06-16EDT13:25:17-04:00
ya:ovs:allow_embedfalse
langen-us
twitter:cardsummary_large_image
twitter:titleClimate Change - NASA Science
twitter:descriptionNASA is a global leader in studying Earth’s changing climate.
twitter:site@NASA
twitter:creator@NASA
twitter:imagehttps://science.nasa.gov/wp-content/uploads/2023/06/icescapepondsample-lrg-jpg.webp
twitter:label1Written by
twitter:data1Kevin Ward
twitter:label2Time to read
twitter:data2Less than a minute
og:localeen_US
og:typearticle
og:titleClimate Change - NASA Science
og:descriptionNASA is a global leader in studying Earth’s changing climate.
og:urlhttps://science.nasa.gov/climate-change/
og:site_nameNASA Science
og:updated_time2025-02-06T16:10:00-05:00
og:imagehttps://science.nasa.gov/wp-content/uploads/2023/06/icescapepondsample-lrg-jpg.webp
og:image:secure_urlhttps://science.nasa.gov/wp-content/uploads/2023/06/icescapepondsample-lrg-jpg.webp
og:image:width1024
og:image:height683
og:image:altScience crew members retrieve a canister from melt ponds on the Arctic Ocean.
og:image:typeimage/jpeg
og:videohttps://assets.science.nasa.gov/content/dam/science/esd/climate/video_items/Wildfires%20and%20CC%20hero%20video%20half%20speed.mp4
charsetUTF-8

Automatically check science.nasa.gov including all subpages at once!

Try for free
Guaranteed free of charge during trial period.

Page quality

Content
(Critically important)
This page contains 882 words. That's ok.
32.4% of the text are stop words.
Keywords used in the page title are also used in the page content. That's good!
Words from the H1 heading are used in the page content.
The page contains a listing, which indicates a good text layout.
13 paragraphs were found on this page.
The text content is perfect.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 24.82 words is good.
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 18 tags for this page.
Image SEO
(Somewhat important)
12 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
...asa-child/assets/images/nasa-logo@2x.pngNASA Logo
...asa-child/assets/images/nasa-logo@2x.pngNASA Logo
...6989374-3689670236967468275-n.jpg?w=2046No alt attribute provided
...512&h=289&fit=clip&crop=faces,focalpointNo alt attribute provided
...600&h=900&fit=clip&crop=faces,focalpointNo alt attribute provided
...5/04/curious-universe-earth-cropped.jpegNo alt attribute provided
...5/04/curious-universe-earth-cropped.jpegNo alt attribute provided
...2024/02/climate-evidence-image.jpg?w=842This is a test image
...test-images-of-change-callout.jpg?w=2048test
...machine-320x240-1.jpg?w=150&h=150&crop=1No alt attribute provided
...eviewer-320x240-1.jpg?w=150&h=150&crop=1No alt attribute provided
...l-2022-640x480-1.webp?w=150&h=150&crop=1No alt attribute provided
...-10-at-2.44.29-pm.png?w=150&h=150&crop=1No alt attribute provided
..._cbar_print-jpeg.webp?w=150&h=150&crop=1This visualization shows total sea level change between 1992 and 2019, with orange/red regions indicating where sea levels are rising.
..._Hyperwall_0-jpg.webp?w=150&h=150&crop=1Bolten_hyperwall.jpg
...a-gis-2023-hires.webp?w=150&h=150&crop=1June, July, and August were 0.23°C (0.41°F) warmer than any other summer in NASA’s record.
...20&h=1080&fit=clip&crop=faces,focalpointNo alt attribute provided
.../WeatherFocusGMAO.png?w=150&h=150&crop=1No alt attribute provided
...columbiaglacier653-oli-2019172.jpg?w=720No alt attribute provided
...asa-child/assets/images/nasa-logo@2x.pngNASA Logo
Video URLWidthHeight
...ldfires and CC hero video half speed.mp4

Page structure

H1 heading
(Critically important)
Climate Change
The H1 heading is too short (14 characters). It should be at least 20 Characters long.
Headings
(Important)
Some headings do not have any content.

Heading structure

Heading levelContent
H1 Climate Change
H2 Suggested Searches
H2 Wildfires and Climate Change
H2 Latest News
H2 How Do We Know Climate Change is Real?
H2 Images of Change
H2 Climate Change Resources
H2 Climate Time Machine
H2 Global Ice Viewer
H2 Multimedia
H2 En español
H2 Climate Data Resources
H2 Sea Level Change Observations from Space
H2 NASA Center for Climate Simulation (NCCS)
H2 GISS Surface Temperature Analysis (GISTEMP)
H2 NASA Earth Exchange (NEX)
H2 Global Modeling and Assimilation Office (GMAO)
H2 World of Change
H3 Empty heading
H3 National Aeronautics and Space Administration
H3 Follow NASA
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.
1 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.
There are too many external links (48) on this page.

Found links on this page

LinkAttributesAnchor text
https://www.nasa.gov/External Subdomain IMG-ALT NASA Logo
https://www.nasa.gov/External Subdomain Text duplicate IMG-ALT NASA Logo
https://plus.nasa.gov/External Subdomain NASA+
/?search=Climate ChangeSubdomain Climate Change
/?search=ArtemisSubdomain Artemis
/?search=Expedition 64Subdomain Expedition 64
/?search=Mars perseveranceSubdomain Mars perseverance
/?search=SpaceX Crew-2Subdomain SpaceX Crew-2
/?search=International Space S...Subdomain International Space Station
/a-to-z-topics-listing/Subdomain View All Topics A-Z
/climate-change/Subdomain Text duplicate Climate Change
https://eyes.nasa.gov/apps/earth/External Subdomain Eyes on the Earth
/earth-science/earth-science-a...Subdomain Learn more about how NASA Earth science helps Americans respond to challenges.
https://appliedsciences.nasa.g...External Subdomain prepare for and respond
https://appliedsciences.nasa.g...External Subdomain a rich data source
/wildfires-and-climate-change/Subdomain Learn More about Wildfires and Climate Change
https://www.nasa.gov/news/all-...External Subdomain More NASA News
/get-involved/citizen-science/...Subdomain Article 2 Min Read Polar Tourists Give Positive Reviews to NASA Citizen Science in Antarctica
/earth/from-space-to-soil-how-...Subdomain Article 1 Min Read From Space to Soil: How NASA Sees Forests
/blogs/nisar/2025/05/01/nasa-i...Subdomain 1 Min Read NASA, ISRO Aiming to Launch NISAR Earth Mission in June 2025 Blog
https://www.nasa.gov/podcasts/...External Subdomain 26 Min Read Earth Series: From Space to Your Plate
https://www.nasa.gov/podcasts/...External Subdomain 28 Min Read Earth Series: The Ocean, Now in Full Color
/climate-change/evidence/Subdomain Trivial anchor text
Read More
https://climate.nasa.gov/image...External Subdomain Learn More about Images of Change
https://climate.nasa.gov/inter...External Subdomain No Text
https://climate.nasa.gov/inter...External Subdomain No Text
/climate-change/multimedia/Subdomain No Text
https://climate.nasa.gov/en-es...External Subdomain No Text
https://sealevel.nasa.gov/New window External Subdomain No Text
https://www.nccs.nasa.gov/New window External Subdomain No Text
https://data.giss.nasa.gov/gis...New window External Subdomain No Text
https://www.nasa.gov/nasa-eart...External Subdomain No Text
https://gmao.gsfc.nasa.gov/New window External Subdomain No Text
https://earthobservatory.nasa....New window External Subdomain Learn More
https://www.nasa.gov/about/External Subdomain About NASA's Mission
https://www.nasa.gov/get-invol...External Subdomain Join Us
https://www.nasa.gov/External Subdomain Home
https://www.nasa.gov/news/External Subdomain News & Events
https://www.nasa.gov/multimedia/External Subdomain Multimedia
https://plus.nasa.gov/External Subdomain Text duplicate NASA+
https://www.nasa.gov/nasa-miss...External Subdomain Missions
https://www.nasa.gov/humans-in...External Subdomain Humans in Space
https://science.nasa.gov/earth/Subdomain Earth
/solar-system/Subdomain The Solar System
/universe/Subdomain The Universe
https://science.nasa.gov/Subdomain Science
https://www.nasa.gov/aeronautics/External Subdomain Aeronautics
https://www.nasa.gov/technology/External Subdomain Technology
https://www.nasa.gov/learning-...External Subdomain Learning Resources
https://www.nasa.gov/about/External Subdomain About NASA
https://www.nasa.gov/es/New window External Subdomain NASA en Español
https://www.facebook.com/NASANew window External Subdomain A-TITLE NASA on Facebook
https://www.instagram.com/nasa/New window External Subdomain A-TITLE NASA on Instagram
https://x.com/NASANew window External A-TITLE NASA on X
https://www.youtube.com/@NASANew window External Subdomain A-TITLE NASA on YouTube
https://www.nasa.gov/social-me...External Subdomain More NASA Social Accounts
https://www.nasa.gov/nasa-news...External Subdomain NASA Newsletters
https://www.nasa.gov/sitemap/External Subdomain Sitemap
https://www.nasa.gov/news/nasa...External Subdomain For Media
https://www.nasa.gov/nasa-web-...External Subdomain Privacy Policy
https://www.nasa.gov/foia/External Subdomain FOIA
https://www.nasa.gov/no-fear-act/External Subdomain No FEAR Act
http://oig.nasa.gov/New window External Subdomain Office of the IG
https://www.nasa.gov/budgets-p...External Subdomain Budget & Annual Reports
https://www.nasa.gov/organizat...External Subdomain Agency Financial Reports
https://www.nasa.gov/contact-n...External Subdomain Contact NASA
https://www.nasa.gov/accessibi...External Subdomain Accessibility

Server configuration

HTTP redirects
(Critically important)
The checked page does not redirect to another URL.
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 0.13 seconds.
The file size of the HTML document is fine (280 kB).

HTTP Response Header

NameValue
servernginx
dateSat, 26 Jul 2025 07:03:47 GMT
content-typetext/html; charset=UTF-8
varyAccept-Encoding
host-headera9130478a60e5f9135f765b23f26593b
x-launch-statusGo Flight!
x-frame-optionsSAMEORIGIN
link<https://science.nasa.gov/?p=55815>; rel=shortlink
content-encodingbr
x-rqvie2 0 20 9980
accept-rangesbytes
cache-controlmax-age=300, must-revalidate
x-cacheSTALE
strict-transport-securitymax-age=31536000
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 631 referring domains.
This page has 7,513 backlinks.
This page has backlinks from 448 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

User-agent: usasearch
Crawl-delay: 1
Allow: /

User-agent: *
Allow: /Sitemap: https://science.nasa.gov/sitemap_index.xml

Similar sites

Search preview

science.nasa.gov › climate-change
Climate Change - NASA Science
NASA is a global leader in studying Earth’s changing climate.

Most important keywords

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

KeywordResultRecheck
Climate81%Check
NASA75%Check
Climate Change72%Check
Change71%Check
NASA Science66%Check
NASA Earth65%Check
Climate Data58%Check
Global56%Check
NASA Earth Observatory55%Check
Science54%Check
Show more keywords and terms

Automatically check science.nasa.gov including all subpages at once!

Try for free
Guaranteed free of charge during trial period.

Cookie Policy

We use cookies to make our site work and also for analytics and advertising purposes. You can enable or disable optional cookies as desired. See the following links for more information.

Contact | Privacy

We need these so the site can function properly

So we can better understand how visitors use our website

So we can serve you tailored ads and promotions