Terra.nasa.gov - SEO Checker

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Overview of the SEO Check
Meta information
93% 
Page quality
62% 
Page structure
75% 
Link structure
73% 
Server
0% 
External factors
100% 
SEO Score
Response time
1.10 s
File size
100.10 kB
Words
1325
Media files
32
Number of links
82 internal / 21 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Terra | The EOS Flagship
The length of the page title is perfect. (226 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Home for the Terra Satellite Earth Observing System
The length of the meta description is perfect. (322 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
Server location: United States of America
The language is not specified in the HTML markup.
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, maximum-scale=1, user-scalable=no
robotsmax-image-preview:large
descriptionHome for the Terra Satellite Earth Observing System
keywordsTERRA, satellite, ASTER, CERES, MISR, MODIS, MOPITT, EOS, NASA GSFC, Earth Sciences Division
content-ownerKurtis Thome
DC.creatorKurtis Thome
rnoKurtis Thome
webmaster610WebDev
webmaster.mailgsfc-dl-610-webdev@mail.nasa.gov
DC.publisher610WebDev
orgcode610
DC.publisher.addressgsfc-dl-610-webdev@mail.nasa.gov
charsetUTF-8

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Page quality

Content
(Critically important)
There are 2 text duplicates on this page:
  • Duplicate: Update on Terra’s New Orbit: Since 2020, Terra has been drifting to an...
The average number of words per sentence of 31.24 words is high.
This page contains 1325 words. That's ok.
31.2% 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.
14 paragraphs were found on this page.
The text content is perfect.
No placeholders texts or images were found.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
This page loads 12 JavaScript files. This may affect the load time negatively.
A viewport "width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" is provided.
Bold and strong tags
(Somewhat important)
Some tags are too long. With 366 characters this one is longer than 70 characters:
"update on terra’s new orbit: since 2020, terra has been drifting to an earlier equator crossing time, ..."
Image SEO
(Somewhat important)
11 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
...themes/TerraResponsiveChild/img/nasa.pngNASA
/wp-content/uploads/2014/03/terra-title.pngTerra
...4425/amundsengulf_tmo_20250609_front.jpgNo alt attribute provided
...54421/lesothosnow_tmo_20250611_front.jpgNo alt attribute provided
...4363/cafallowdust_oli_20210814_front.jpgNo alt attribute provided
...154257/newzealand_tmo_20250505_front.jpgNo alt attribute provided
.../154233/ausflood_oli2_20250422_front.jpgNo alt attribute provided
...54000/154186/dust_amo_20250414_front.jpgNo alt attribute provided
...pineislandglacier_tmo_20250320_front.jpgNo alt attribute provided
...6/kunlunmtns_dust_oli_20250327_front.jpgNo alt attribute provided
...t/uploads/2025/01/FinalBanner25Years.jpgImage of space craft and four multi-colored globes, with the words "Celebrating 25 Years of Terra" across the top, the NASA logo, and the years 1999 - 2024 near the bottom.
/wp-content/uploads/2023/12/aster3.pngASTER
/wp-content/uploads/2023/12/ceres.pngCERES
/wp-content/uploads/2023/12/misr.pngMISR
/wp-content/uploads/2023/12/modis.pngMODIS
/wp-content/uploads/2023/12/mopitt.pngMOPITT
...ads/2023/11/Terra_logo_crop_resize_2.jpgEOS Terra logo
.../uploads/2024/01/wideorbit3-1024x179.pngNo alt attribute provided
.../grey-professional-bar-chart-graph-1.pngEquator crossing time: 9:59 (mean local time)
/wp-content/uploads/2023/11/altitude.pngOrbital Altitude 692 km
...ntent/uploads/2023/12/news4-1024x154.jpgTerra news
.../uploads/2025/02/Valentines2025Terra.jpgNo alt attribute provided
...2025/02/FinalTwitterTerraStories2025.pngNo alt attribute provided
...6/ASTER_Greenland_still.8182-200x112.jpgASTER
...014/06/CERES_BoxcarPair04001-200x150.jpgCERES
.../MISR_Haymanfire_frame.04881-200x112.jpgMISR
...nkton_alaska_amo_2007009_web-200x112.pngOcean Color in Gulf of Alaska
...s/2014/08/MOPITT-a001134_pre-200x151.jpgMOPITT Globe
Video URLWidthHeight
.../2022/09/rfi-2022-1080-p-220920-mp-4.mp4
...20Anniversary_FINAL_VX-309499_lowres.mp4
...20Anniversary_FINAL_VX-309498_lowres.mp4

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.
Some headings do not have any content.

Heading structure

Heading levelContent
H2 Terra: the EOS Flagship
H2 Terra: The EOS Flagship
H2 Empty heading
H2 Important Terra Updates and Information
H2 Terra’s orbit has changed, but the data quality hasn’t! Visit this link to learn more about Terra’s new orbit.
H3 Seasonal Breakup in the Amundsen Gulf
H3 Winter Arrives Early in Lesotho and South Africa
H3 Dusty Skies in California Farm Country
H3 Late-Autumn Storm Lashes New Zealand
H3 Floods Give Way to a Burst of Desert Life
H3 Dust Storm Sweeps Through Iraq
H3 Signs of the Season in Pine Island Bay
H3 A Curtain of Dust Over the Tarim Basin
H3 Past News Features
H3 Science Visualizations
H4 Connecting Earth’s Systems with Terra’s Observations
H4 Terra’s Lower Orbit Virtual Community Forum
H4 NASA’s Terra, Aqua, and Aura Drifting Orbits Workshop Information
H4 Terra Begins Drifting. What’s Next?
H4 Terra: Providing Critical Data to Help Society
H4 Twenty Years of Terra in Our Lives
H5 MOPITT Instrument Power-Off: As most data users are aware, the Terra satellite has recently been experiencing power-based limitations caused by orbital changes and solar array efficiency. In order ...
H6 UPDATE ON ASTER VNIR/TIR: After investigation and monitoring of platform battery status, the Terra Flight Operations Team (FOT) determined that there was sufficient power to resume imaging with AST...
Some internal link anchor texts are too long.
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.
4 links don't have an anchor text.
There are 1 links with a trivial anchor text.
The number of internal links is ok.
There are 21 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://terra.nasa.gov/Anchor ↓ Skip to Main Content
https://www.nasa.gov/New window External Subdomain NASA
http://earthobservatory.nasa.gov/New window External Subdomain Earth Observatory
http://visibleearth.nasa.gov/v...New window External Subdomain Terra in Visible Earth
https://www.nasa.gov/New window External Subdomain Text duplicate IMG-ALT NASA
https://terra.nasa.gov/Subdomain IMG-ALT Terra
https://terra.nasa.gov/aboutSubdomain About
/about/missionSubdomain Mission
/about/terra-instrumentsSubdomain Terra Instruments
/about/terra-instruments/asterSubdomain ASTER
/about/terra-instruments/ceresSubdomain CERES
/about/terra-instruments/misrSubdomain MISR
/about/terra-instruments/modisSubdomain MODIS
/about/terra-instruments/mopittSubdomain MOPITT
https://terra.nasa.gov/scienceSubdomain Science
/science/applicationsSubdomain Applications
/science/atmospheric-compositionSubdomain Atmosphere
/science/carbon-cycle-and-ecos...Subdomain Carbon Cycle and Ecosystems
/science/climate-variability-a...Subdomain Climate Variability and Change
/science/earths-surface-interiorSubdomain Earth’s Surface & Interior
/science/water-energy-cycleSubdomain Water & Energy Cycle
/science/weatherSubdomain Weather
https://terra.nasa.gov/dataSubdomain Data
/data/aster-dataSubdomain ASTER Data
/data/ceres-dataSubdomain CERES Data
/data/misr-dataSubdomain MISR Data
/data/modis-dataSubdomain MODIS Data
/data/mopitt-dataSubdomain MOPITT Data
https://terra.nasa.gov/multimediaSubdomain Multimedia
/multimedia/imagesSubdomain TERRA Images
/multimedia/videoSubdomain Videos
/multimedia/podcastsSubdomain Podcasts
/topics/newsSubdomain News
https://terra.nasa.gov/resourcesSubdomain Resources
/resources/for-data-usersSubdomain For Data Users
/resources/for-educatorsSubdomain For Educators
/resources/for-everyoneSubdomain For Everyone
/resources/resourcesSubdomain All Resources
https://terra.nasa.gov/peopleSubdomain Leadership
/people/kurtis-thomeSubdomain Dr. Kurtis Thome
/people/dr-david-j-dinerSubdomain Dr. David J. Diner
/people/dr-james-r-drummondSubdomain Dr. James R. Drummond
/?page_id=1453Subdomain Dr. Michael D. King
/people/michael-j-abramsSubdomain Mr. Michael J. Abrams
/people/dr-norman-g-loebSubdomain Dr. Norman G. Loeb
/people/dr-si-chee-tsaySubdomain Dr. Si-Chee Tsay
/people/mr-robert-wolfeSubdomain Mr. Robert Wolfe
/people/mr-wynn-j-watsonSubdomain Mr. Wynn J. Watson
/people/dr-nyssa-rayneSubdomain Dr. Nyssa Rayne
/about/terra-instrumentsSubdomain Terra Instruments:
/about/terra-instruments/asterSubdomain Text duplicate ASTER
A-TITLE ASTER
/about/terra-instruments/ceresSubdomain Text duplicate CERES
A-TITLE CERES
/about/terra-instruments/misrSubdomain Text duplicate MISR
A-TITLE MISR
/about/terra-instruments/modisSubdomain Text duplicate MODIS
A-TITLE MODIS
/about/terra-instruments/mopittSubdomain Text duplicate MOPITT
A-TITLE MOPITT
https://visibleearth.nasa.gov/...External Subdomain No Text
https://visibleearth.nasa.gov/...External Subdomain No Text
https://visibleearth.nasa.gov/...External Subdomain No Text
https://visibleearth.nasa.gov/...External Subdomain No Text
https://visibleearth.nasa.gov/...External Subdomain No Text
https://visibleearth.nasa.gov/...External Subdomain No Text
https://visibleearth.nasa.gov/...External Subdomain No Text
https://visibleearth.nasa.gov/...External Subdomain No Text
/news/canadian-instrument-mopi...Subdomain Terra blog post
https://www.asc-csa.gc.ca/eng/...External Subdomain Canadian Space Agency MOPITT website.
https://gcc02.safelinks.protec...External Subdomain this linked Land Processes Distributed Active Archive Center webpage
/celebrating-25-years-of-terraSubdomain IMG-ALT Image of space craft and four multi-colored globes, with the words "Celebrating 25 Years of Terra" across the top, the NASA logo, and the years 1999 - 2024 n...
/about/terra-instruments/asterSubdomain Text duplicate ASTER
/about/terra-instruments/ceresSubdomain Text duplicate CERES
/about/terra-instruments/misrSubdomain Text duplicate MISR
/about/terra-instruments/modisSubdomain Text duplicate MODIS
/about/terra-instruments/mopittSubdomain Text duplicate MOPITT
/about/instrumentupdatearchiveSubdomain Instrument Updates (Archive)
/about/terras-orbit-changesSubdomain Terra’s orbit has changed, but the data quality hasn’t! Visit this link to learn more about Terra’s new orbit.
/about/terras-orbit-changesSubdomain Terra’s New Orbit
/news/2023-terra-updatesSubdomain IMG-ALT Terra news
/news/valentines-day-2025Subdomain Valentine’s Day 2025
/news/valentines-day-2025Subdomain No Text
/news/2024-terra-social-media-...Subdomain 2024 Terra Social Media Stories
/news/2024-terra-social-media-...Subdomain No Text
/news/2024-terra-social-media-...Subdomain No Text
/news/2024-terra-social-media-...Subdomain No Text
/news/canadian-instrument-mopi...Subdomain Canadian Instrument, MOPITT, on NASA’s Terra, Powered Off
/news/canadian-instrument-mopi...Subdomain Canadian Instrument, MOPITT, on NASA’s Terra, Powered Off Read More »
/news/valentines-day-2025Subdomain Text duplicate Valentine’s Day 2025
/news/2024-terra-social-media-...Subdomain Text duplicate 2024 Terra Social Media Stories
/news/2024-terra-social-media-...Subdomain 2024 Terra Social Media Stories Read More »
/about/terra-orbital-maneuvers...Subdomain Terra’s Lower Orbit Virtual Community Forum
/news/terra-aqua-aura-drifting...Subdomain NASA’s Terra, Aqua, and Aura Drifting Orbits Workshop Information
/about/terra-orbital-drift-inf...Subdomain Terra Begins Drifting. What’s Next?
/about/terra-orbital-drift-inf...Subdomain Read more…
/wp-content/uploads/2019/12/13...Subdomain Terra: Providing Critical Data to Help Society
/news/twenty-years-of-terra-in...Subdomain Twenty Years of Terra in Our Lives
/news/twenty-years-of-terra-in...Subdomain Trivial anchor text
Read more
/terra-20-eventsSubdomain Terra 20 Events
/about/terras-orbit-changesSubdomain Text duplicate Terra’s New Orbit
https://svs.gsfc.nasa.gov/sear...New window Nofollow External Subdomain Text duplicate IMG-ALT ASTER
https://svs.gsfc.nasa.gov/sear...New window Nofollow External Subdomain Text duplicate IMG-ALT CERES
https://svs.gsfc.nasa.gov/sear...New window Nofollow External Subdomain Text duplicate IMG-ALT MISR
https://svs.gsfc.nasa.gov/sear...New window Nofollow External Subdomain IMG-ALT Ocean Color in Gulf of Alaska
https://svs.gsfc.nasa.gov/sear...New window Nofollow External Subdomain IMG-ALT MOPITT Globe
https://www.nasa.gov/general/a...New window External Subdomain Accessibility
https://www.nasa.gov/about/hig...New window External Subdomain Privacy Policy & Important Notices

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://terra.nasa.gov/"
HTTP header
(Important)
The HTML page should be transferred using GZip compression.
No X-Powered HTTP header is sent.
Performance
(Somewhat important)
The page response time is slow (1.10 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 14 CSS files. This may affect the page load time negatively.
This page loads 12 JavaScript files. This may affect the load time negatively.
The file size of the HTML document is fine (100 kB).

HTTP Response Header

NameValue
dateWed, 18 Jun 2025 19:49:33 GMT
serverApache
strict-transport-securitymax-age=31557600
x-frame-optionsSAMEORIGIN
transfer-encodingchunked
content-typetext/html; charset=UTF-8
statuscode200
http_versionHTTP/1.1

External factors

This website has excellent links from other websites.
This page has backlinks from 1,154 referring domains.
This page has 7,152 backlinks.
This page has backlinks from 438 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

User-agent: *
Disallow: /wp-admin/
Allow: /wp-admin/admin-ajax.php

Sitemap: https://terra.nasa.gov/wp-sitemap.xml

User-agent: *
Disallow: /wp-content/uploads/wpo/wpo-plugins-tables-list.json

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terra.nasa.gov
Terra | The EOS Flagship
Home for the Terra Satellite Earth Observing System

Most important keywords

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

KeywordResultRecheck
Terra79%Check
Terra new63%Check
Terra satellite62%Check
Terra data61%Check
EOS56%Check
Terra Mission56%Check
EOS Flagship55%Check
NASA54%Check
Flagship54%Check
orbit51%Check
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