Starchild.gsfc.nasa.gov - SEO Checker

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Overview of the SEO Check
Meta information
81% 
Page quality
41% 
Page structure
70% 
Link structure
96% 
Server
20% 
External factors
100% 
SEO Score
Response time
0.95 s
File size
6.80 kB
Words
151
Media files
5
Number of links
19 internal / 12 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
StarChild: A Learning Center for Young Astronomers
The length of the page title is perfect. (467 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
This site is intended for students in grades K through 8.
The length of the meta description is perfect. (340 pixels out of 1000 max pixel length)
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)
HTTP-Header Content-Type: iso-8859-1
Meta Charset Attribut: utf-8
The specified character encodings are different.
Doctype
(Nice to have)
No doctype markup was found.
Favicon
(Nice to have)
No favicon is linked in the HTML code.

Meta tags

NameValue
titleStarChild: A Learning Center for Young Astronomers
descriptionThis site is intended for students in grades K through 8.
keywordsStarChild, nasa, education, active galactic nuclei, astronomy, binary stars, black holes, cataclysmic variables, comets, cosmic rays, cosmos, dark matter, diffuse background, earth, galaxies, gamma-ray bursts, gravitational waves, neutron stars, pulsars, quasars, space, stars, sun, supernova, supernova remnants, universe, white dwarfs
robotsnoodp
orgcode662
content-ownerJohn.D.Myers.1
webmasterStephan.F.Fantasia.1
rnoPhillip.A.Newman.1
langen
charsetutf-8

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Page quality

Content
(Critically important)
There are only 151 words on this page. Use at least 250 words to provide useful information.
Words from the H1 heading are not used in the page content.
Only 2 paragraph/s was/were found on this page.
27.8% 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.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 19.75 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No viewpoint tag is provided.
No Apple touch icon is specified.
This page only loads 1 JavaScript files. That's good!
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
/docs/StarChild/inc/img/nasa_insignia.pngNASA Insignia
...s/StarChild/inc/img/starchild_banner.pngStarChild: A Learning Center for Young Astronomers
/Images/StarChild/homepage.gifStarChild
/docs/StarChild/inc/img/nasa_insignia.pngNASA Insignia
...s/StarChild/inc/img/goddardsignature.pngGoddard Signature

Page structure

H1 heading
(Critically important)
National Aeronautics and Space Administration
Too many H1 headings
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 National Aeronautics and Space Administration
H1 Welcome to Starchild
H2 Goddard Space Flight Center
H3 Level 1
H3 Level 2
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
/docs/StarChild/StarChild.htmlAnchor Skip navigation and go straight to page content.
http://www.nasa.gov/External Subdomain IMG-ALT NASA Insignia
http://www.nasa.gov/External Subdomain National Aeronautics and Space Administration
http://www.nasa.gov/goddardExternal Subdomain Goddard Space Flight Center
https://starchild.gsfc.nasa.gov/Subdomain IMG-ALT StarChild: A Learning Center for Young Astronomers
/docs/StarChild/Home
/docs/StarChild/teachers/teach...In the Classrooom
/docs/StarChild/question.htmlJust Ask
/docs/StarChild/other_places.htmlOther Good Places
/docs/StarChild/translations.htmlOther Languages
/docs/StarChild/solar_system_l...Solar System
/docs/StarChild/universe_level...Universe
/docs/StarChild/space_level1/s...Space Stuff
/docs/StarChild/glossary_level...Glossary
/docs/StarChild/solar_system_l...Text duplicate Solar System
/docs/StarChild/universe_level...Text duplicate Universe
/docs/StarChild/space_level2/s...Text duplicate Space Stuff
/docs/StarChild/glossary_level...Text duplicate Glossary
https://imagine.gsfc.nasa.gov/External Subdomain Imagine the Universe!
http://heasarc.gsfc.nasa.gov/External Subdomain HEASARC
http://science.gsfc.nasa.gov/660/External Subdomain Astrophysics Science Division (ASD)
http://www.nasa.gov/External Subdomain NASA
http://www.nasa.gov/goddard/External Subdomain GSFC
http://www.nasa.gov/External Subdomain Text duplicate IMG-ALT NASA Insignia
http://www.nasa.gov/goddardExternal Subdomain IMG-ALT Goddard Signature
/docs/StarChild/team.htmlThe StarChild Team
/docs/StarChild/graphics.htmlGraphics & Music Acknowledgments
/docs/StarChild/whitlock.htmlDr. Laura A. Whitlock
/cgi-bin/ideas_html.plJ.D. Myers
http://www.nasa.gov/about/high...External Subdomain Privacy Policy & Important Notices
http://www.nasa.gov/about/cont...External Subdomain Contact NASA

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://starchild.gsfc.nasa.gov/docs/StarChild/StarChild.html"
HTTP header
(Important)
The HTML page should be transferred using GZip compression.
The web server version is sent within the HTTP header.
No X-Powered HTTP header is sent.
Performance
(Somewhat important)
The page response time of 0.95 seconds is longer than the recommended limit of 0.4 seconds. A high response time unnecessarily slows down search engine crawling and results in bad user experience as well.
This page only loads 1 CSS files. That's ok.
This page only loads 1 JavaScript files. That's good!
The file size of the HTML document is fine (7 kB).

HTTP Response Header

NameValue
dateMon, 20 May 2024 06:46:26 GMT
serverWebServer/1.0
x-frame-optionssameorigin
accept-rangesbytes
content-security-policyframe-ancestors 'self' cms.nasa.gov www.nasa.gov beta.science.nasa.gov smd-cms.nasa.gov science.nasa.gov;
connectionclose
content-typetext/html; charset=ISO-8859-1
strict-transport-securitymax-age=31536000; includeSubDomains
statuscode200
http_versionHTTP/1.1

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 123 referring domains.
This page has 5,774 backlinks.
This page has backlinks from 116 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

# Example robots.txt for http://heasarc.gsfc.nasa.gov/

#Keep them robots out of the FTP area.
User-Agent: *
Disallow: /FTP/
Disallow: /cgi-bin/
Disallow: /db-perl/
Disallow: /cgi-perl/
Disallow: /xte_weather/data/
Disallow: /Tools/xraybg/images/
Disallow: /Tools/xraybg/spectrum/
Disallow: /vo/
Disallow: /uadb/
Disallow: /srvlogin/

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Search preview

starchild.gsfc.nasa.gov › docs › StarChild › StarChild.html
StarChild: A Learning Center for Young Astronomers
This site is intended for students in grades K through 8.

Most important keywords

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

KeywordResultRecheck
Starchild65%Check
Space54%Check
Center52%Check
Learning Center50%Check
National50%Check
Aeronautics50%Check
Administration50%Check
young48%Check
young astronomers48%Check
astronomers47%Check
Show more keywords and terms

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