Europa.nasa.gov - SEO Checker

Sign up for free! PDF Export
Overview of the SEO Check
Meta information
79% 
Page quality
53% 
Page structure
79% 
Link structure
93% 
Server
31% 
External factors
100% 
SEO Score
Response time
1.31 s
File size
116.10 kB
Words
218
Media files
11
Number of links
40 internal / 6 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
NASA's Europa Clipper
The length of the page title is perfect. (211 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Earth’s first mission to conduct detailed reconnaissance of Jupiter’s moon, Europa. NASA’s Europa Clipper will determine if this ocean world has environments suitable for life to exist.
There are more than one meta descriptions on the page. Only one is allowed.
The meta description is too long: 1121 pixels from max. 1000 pixels. Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
No canonical link is 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)
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=1.0
theme-color#ffffff
csrf-paramauthenticity_token
csrf-tokenFKGm4/hMsYurKri+ILXV3TB9XM1E9ueHJrBC0IhygiGa0hrnPZvrTr2/dpjuFh/Uf/CCeDuO4+uU9md3NPlJiQ==
authorEmpty
keywordsEuropa, Ocean, Life, Extraterrestrial, Alien, Astrobiology, Jupiter, Moon, Icy, Extremophile, Water, Galilean, Spacecraft, Mission, Space, Science, Orbiter, Clipper, Flyby
descriptionEarth’s first mission to conduct detailed reconnaissance of Jupiter’s moon, Europa. NASA’s Europa Clipper will determine if this ocean world has environments suitable for life to exist.
langen
twitter:imagehttps://europa.nasa.gov/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBdUFEIiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--8b197169294bd08db0499578055a91e0d29d9fbc/europa_share.jpg
fb:app_id203104820480657
og:site_nameNASA's Europa Clipper
og:descriptionEarth’s first mission to conduct detailed reconnaissance of Jupiter’s moon, Europa. NASA’s Europa Clipper will determine if this ocean world has environments suitable for life to exist.
og:titleNASA's Europa Clipper
og:urlhttps://europa.nasa.gov/
og:updated_time2014-06-02 17:12:34 -0700
og:imagehttps://europa.nasa.gov/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBdUFEIiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--8b197169294bd08db0499578055a91e0d29d9fbc/europa_share.jpg
Content-Typetext/html; charset=UTF-8
X-UA-CompatibleIE=edge,chrome=1

Test up to 1.000 webpages of europa.nasa.gov with our free plan!

Try For Free
No trial. It's just free!

Page quality

Content
(Critically important)
There are only 218 words on this page. Use at least 250 words to provide useful information.
23.4% of the text are stop words.
The page contains a listing, which indicates a good text layout.
4 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 18.33 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
A viewport "width=device-width, initial-scale=1.0" 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 6 tags for this page.
Image SEO
(Somewhat important)
1 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
/assets/[email protected]No alt attribute provided
/assets/overlay-arrow.pngMore
/assets/loading_320x240.pngMeet the Team
/assets/overlay-arrow.pngMore
/assets/loading_320x240.pngLearn About Europa
/assets/overlay-arrow.pngMore
/assets/loading_320x240.pngExplore the Spacecraft
/assets/overlay-arrow.pngMore
/assets/loading_320x240.pngRead the Latest News
/assets/overlay-arrow.pngMore
/assets/loading_320x240.pngView Resources

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
H2 JOIN US
H2 Stay Connected
H3 Mission
H3 Spacecraft
H3 Why Europa
H3 News
H3 Resources
H3 Participate
Some internal link anchor texts are too long.
Some anchor texts are used more than once.
The number of internal links is ok.
All internal links are not using dynamic parameters.
There are 6 external links on this page.

Found links on this page

LinkAttributesAnchor text
http://www.nasa.gov/New window External Subdomain NASA
A-TITLE visit nasa.gov
https://europa.nasa.gov/Europa Clipper
A-TITLE Home
https://europa.nasa.gov/Anchor Skip Navigation
/mission/the-teamThey're united by a lofty goal — to determine whether there are places below Europa’s surface that could support life. Meet the team making it happen.
IMG-ALT More
/mission/the-teamMeet the Team
/why-europaEuropa could have the essential ingredients needed for life: liquid water, the right chemistry and a source of energy. Learn more about Europa.
IMG-ALT More
/why-europaLearn About Europa
/spacecraftEuropa Clipper will carry a suite of science instruments to discover whether Europa hosts environments suitable for life. Explore the spacecraft.
IMG-ALT More
/spacecraftExplore the Spacecraft
https://europa.nasa.gov/newsCatch up on the latest news from the Europa Clipper mission.
IMG-ALT More
https://europa.nasa.gov/newsRead the Latest News
https://europa.nasa.gov/galleriesView the latest images and videos from the mission, download resources, and more.
IMG-ALT More
https://europa.nasa.gov/galleriesView Resources
/mission/about/Mission
/mission/about/Overview
/mission/science/Science
/mission/timeline/Timeline
/mission/the-team/overview/The Team
/mission/history/History
/mission/faq/FAQ
/spacecraft/meet-europa-clipper/Spacecraft
/spacecraft/meet-europa-clipper/Meet Europa Clipper
/spacecraft/instruments/Instruments
/spacecraft/assembly/Assembly
/spacecraft/vault-plate/Vault Plate
/why-europa/overview/Why Europa
/why-europa/overview/Text duplicate Overview
/why-europa/europa-up-close/Europa Up Close
/why-europa/ingredients-for-life/Ingredients for Life
/why-europa/evidence-for-an-oc...Evidence for an Ocean
/news/latest-news/News
/news/latest-news/Latest News
/news/mission-updates/Mission Updates
/news/newsletter-signup/Subscribe
/galleries/all-resources/Resources
/galleries/all-resources/All Resources
/galleries/images/Images
/galleries/videos/Videos
/galleries/activities/Activities & Educational Resources
/galleries/posters-stickers-an...Posters, Stickers, & More
https://science.nasa.gov/missi...External Subdomain Participate
https://science.nasa.gov/missi...External Subdomain Text duplicate Participate
https://europa.nasa.gov/feedback/Feedback
https://www.nasa.gov/general/a...External Subdomain Accessibility
https://jpl.nasa.gov/New window External Subdomain Jet Propulsion Laboratory
https://science.nasa.gov/New window External Subdomain NASA’s Science Mission Directorate

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://europa.nasa.gov/"
HTTP header
(Important)
The HTML page should be transferred using GZip compression.
The X-powered header is sent within the response header. (unnecessary)
Performance
(Somewhat important)
The page response time is slow (1.31 seconds). The response time should be less than 0.4 seconds. Slow websites are bad for search engine bots and also result in bad user experience.
The file size of the HTML document is fine (116 kB).

HTTP Response Header

NameValue
content-typetext/html; charset=utf-8
dateMon, 24 Jun 2024 15:55:19 GMT
serverApache
cache-controlmax-age=0, private, must-revalidate
x-runtime0.395324
content-security-policydefault-src 'self' https:; font-src 'self' https: data:; img-src 'self' https: data: blob:; object-src 'self'; script-src 'self' https: 'unsafe-inline' 'unsafe-eval'; style-src 'self' https: 'unsafe-inline'; upgrade-insecure-requests; frame-ancestors *
x-request-idd45654b5-dcee-4445-9ef4-15c4a5204ce4
x-powered-byPhusion Passenger(R)
strict-transport-securitymax-age=31536000; includeSubDomains; preload
x-frame-optionssameorigin
etagW/"2199da11baa5702186bfd735baa9ca96"
status200 OK
x-cacheMiss from cloudfront
via1.1 fc562aab29280948aa0691960bee3d6a.cloudfront.net (CloudFront)
x-amz-cf-popFRA56-P5
x-amz-cf-id22n2yTe8ae_PkZm6ssbRKK_fOPVMrKQaXYRsuopG7J86qLVg-PsGRA==
statuscode200
http_versionHTTP/2

External factors

Blacklists
(Nice to have)
This website is not classified "for adult only".
This website has excellent links from other websites.
This page has backlinks from 3,287 referring domains.
This page has 30,528 backlinks.
This page has backlinks from 2,276 different ip addresses.
Facebook popularity
(Somewhat important)
The page has 0 shares and comments on Facebook.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

# See http://www.robotstxt.org/robotstxt.html for documentation on how to use the robots.txt file
#
# To ban all spiders from the entire site uncomment the next two lines:
# User-agent: *
User-agent: *
Sitemap: https://europa.nasa.gov/sitemap.xml
Sitemap: https://europa.nasa.gov/sitemaps/news_sitemap.xml
Disallow: /mbtools/

Similar sites

Search preview

europa.nasa.gov
NASA's Europa Clipper
Earth’s first mission to conduct detailed reconnaissance of Jupiter’s moon, Europa. NASA’s Europa Clipper will determine if this ocean world has environments suitable for life to exist.

Most important keywords

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

KeywordResultRecheck
Europa75%Check
NASA71%Check
Europa Clipper66%Check
Clipper58%Check
NASA Official53%Check
mission50%Check
NASA's Europa Clipper47%Check
life46%Check
determine46%Check
environments46%Check
Show more keywords and terms

Test up to 1.000 webpages of europa.nasa.gov with our free plan!

Try For Free
No trial. It's just free!

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