Science.jpl.nasa.gov - SEO Checker

Sign up for free! PDF Export
Overview of the SEO Check
Meta information
76% 
Page quality
73% 
Page structure
97% 
Link structure
93% 
Server
65% 
External factors
100% 
SEO Score
Response time
1.08 s
File size
29.20 kB
Words
497
Media files
13
Number of links
40 internal / 17 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
JPL Science: Home
The page title is too short. (179 pixels of 580 max pixel length) Optimize title
There are no duplicate words in the title
Meta description
(Critically important)
The meta description is empty.
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)
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
descriptionEmpty
authorShouleh Nikzad
viewportwidth=device-width, initial-scale=1.0
langen
charsetutf-8

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

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

Page quality

Content
(Critically important)
There are only 497 words on this page. Good pages should have about 800 words of useful content.
32% of the text are stop words.
The page contains a listing, which indicates a good text layout.
8 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 23.64 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
This page loads 8 JavaScript files. This may affect the load time negatively.
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 10 tags for this page.
Image SEO
(Somewhat important)
Alt text (alternative text) is correctly used on all found images.
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
...ia/images/feature-planetary.original.pngPlanetary Science Section Icon
...images/feature-astrophysics.original.pngAstrophysics & Space Sciences Section Icon
/media/images/feature-earth.original.pngEarth Science Section Icon
...ages/TITAN_NAI.2e16d0ba.fill-500x500.jpgHabitability of Hydrocarbon Worlds: Titan and Beyond Project Logo
...ge13-Sentinel6.2e16d0ba.fill-500x500.jpgJason-CS / Sentinel-6 Project Logo
...Telescope_erCt.2e16d0ba.fill-500x500.jpgNancy Grace Roman Space Telescope Project Logo
/media/images/ASTHROS-REV-6.original.jpgImage for Featured Story: NASA Mission Will Study the Cosmos With a Stratospheric Balloon
...ia/images/Nikzad.max-255x355_ERijlL0.jpgPhoto of Shouleh Nikzad
...stakasHeadshot2020August.max-255x355.jpgPhoto of Leonidas Moustakas
/static/images/earth.234386cbe9b0.pngJPL Earth
/static/images/solarsystem.d7c8f93606d2.pngJPL Solar System
/static/images/universe.afce9a44df1c.pngJPL Stars & Galaxies
...c/images/scienceandtech.954669298b76.pngJPL Science & Technology

Page structure

H1 heading
(Critically important)
JPL Science Home Page
The H1 heading is perfect.
Headings
(Important)
There are 26 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 JPL Science Home Page
H2 Featured Projects
H2 Featured Story
H2 Featured People
H2 SHOULEH NIKZAD
H2 LEONIDAS MOUSTAKAS
H3 Investigating physical and chemical processes - on the Earth, in the solar system, and throughout the universe...
H3 Planetary Science
H3 Astrophysics & Space Sciences
H3 Earth Science
H3 NASA MISSION WILL STUDY THE COSMOS WITH A STRATOSPHERIC BALLOON
H4 HABITABILITY OF HYDROCARBON WORLDS: TITAN AND BEYOND
H4 JASON-CS / SENTINEL-6
H4 NANCY GRACE ROMAN SPACE TELESCOPE
H4 Earth
H4 Solar System
H4 Stars & Galaxies
H4 Science & Technology
H5 Get the Newsletter
H5 Follow JPL
H5 Home
H5 Science Division
H5 Affiliates
H5 Open Postdoc Positions
H5 Highlights
H5 Workshops
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 17 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://science.jpl.nasa.gov/Anchor Skip Navigation
https://www.nasa.gov/External Subdomain NASA
A-TITLE NASA
http://www.jpl.nasa.gov/External Subdomain Jet Propulsion Laboratory
A-TITLE Jet Propulsion Laboratory Website
http://www.caltech.edu/New window External Subdomain California Institute of Technology
A-TITLE California Institute of Technology Website
https://science.jpl.nasa.gov/JPL Science
A-TITLE JPL Science
https://science.jpl.nasa.gov/Home
/division/Science Division
/peoplePeople
/projectsProjects
/division/planetary-science/Planetary Science
/division/astrophysics-space-s...Astrophysics & Space Sciences
/division/earth-science/Earth Science
/affiliates/Affiliates
http://postdocs.jpl.nasa.gov/r...New window External Subdomain Open Postdoc Positions
/highlights/Highlights
/highlights/search/Search
/highlights/template/Template
/highlights/notifications/Notifications
/workshops/uv/Workshops
http://scienceandtechnology.jp...External Subdomain here.
/division/planetary-science/IMG-ALT Planetary Science Section Icon
/division/planetary-science/Text duplicate Planetary Science
/division/astrophysics-space-s...IMG-ALT Astrophysics & Space Sciences Section Icon
/division/astrophysics-space-s...Text duplicate Astrophysics & Space Sciences
/division/earth-science/IMG-ALT Earth Science Section Icon
/division/earth-science/Text duplicate Earth Science
/projects/habitability-of-hydr...New window IMG-ALT Habitability of Hydrocarbon Worlds: Titan and Beyond Project Logo
/projects/habitability-of-hydr...New window HABITABILITY OF HYDROCARBON WORLDS: TITAN AND BEYOND
/projects/jason-cs-sentinel-6/New window IMG-ALT Jason-CS / Sentinel-6 Project Logo
/projects/jason-cs-sentinel-6/New window JASON-CS / SENTINEL-6
/projects/wfirst/New window IMG-ALT Nancy Grace Roman Space Telescope Project Logo
/projects/wfirst/New window NANCY GRACE ROMAN SPACE TELESCOPE
https://www.jpl.nasa.gov/news/...New window External Subdomain IMG-ALT Image for Featured Story: NASA Mission Will Study the Cosmos With a Stratospheric Balloon
https://www.jpl.nasa.gov/news/...New window External Subdomain NASA MISSION WILL STUDY THE COSMOS WITH A STRATOSPHERIC BALLOON
/people/shouleh-nikzad/IMG-ALT Photo of Shouleh Nikzad
/people/shouleh-nikzad/SHOULEH NIKZAD
/people/shouleh-nikzad/Read Shouleh's Bio >
/people/moustakas/IMG-ALT Photo of Leonidas Moustakas
/people/moustakas/LEONIDAS MOUSTAKAS
/people/moustakas/Read Leonidas's Bio >
https://climate.nasa.gov/External Subdomain Earth
IMG-ALT JPL Earth
https://solarsystem.nasa.gov/External Subdomain Solar System
IMG-ALT JPL Solar System
https://www.jpl.nasa.gov/stars...External Subdomain Stars & Galaxies
IMG-ALT JPL Stars & Galaxies
https://scienceandtechnology.j...External Subdomain Science & Technology
IMG-ALT JPL Science & Technology
https://www.jpl.nasa.gov/social/External Subdomain All
https://science.jpl.nasa.gov/Text duplicate Home
/division/Text duplicate Science Division
/affiliates/Text duplicate Affiliates
http://postdocs.jpl.nasa.gov/r...New window External Subdomain Text duplicate Open Postdoc Positions
/highlights/Text duplicate Highlights
/workshops/uv/Text duplicate Workshops
http://www.nasa.gov/New window External Subdomain Text duplicate NASA
http://www.caltech.edu/New window External Subdomain Caltech
https://www.jpl.nasa.gov/privacyExternal Subdomain Privacy
https://www.jpl.nasa.gov/image...External Subdomain Image Policy
/feedbackFeedback
/feedbackSite Manager: Marisol Olvera

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://science.jpl.nasa.gov/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
The page response time is slow (1.08 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.
This page loads 7 CSS files. This may affect the page load time negatively.
This page loads 8 JavaScript files. This may affect the load time negatively.
The file size of the HTML document is fine (29 kB).

HTTP Response Header

NameValue
dateSat, 28 Sep 2024 17:25:12 GMT
serverApache
strict-transport-securitymax-age=63072000; includeSubdomains
x-frame-optionsSAMEORIGIN
referrer-policystrict-origin-when-cross-origin
content-typetext/html; charset=utf-8
x-content-type-optionsnosniff
varyCookie,Accept-Encoding
content-encodinggzip
content-length6458
statuscode200
http_versionHTTP/1.1

External factors

Blacklists
(Nice to have)
This website is not classified "for adult only".
This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 2,205 referring domains.
This page has 16,439 backlinks.
This page has backlinks from 1,529 different ip addresses.
Facebook popularity
(Somewhat important)
The page has 0 shares and comments on Facebook.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

No valid Robots.txt file was found.

Similar sites

Search preview

science.jpl.nasa.gov
JPL Science: Home

Most important keywords

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

KeywordResultRecheck
Science81%Check
JPL Science80%Check
JPL79%Check
Earth Science64%Check
Science and Technology57%Check
NASA52%Check
Page50%Check
Earth46%Check
Space46%Check
solar46%Check
Show more keywords and terms

Test up to 1.000 webpages of science.jpl.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