Soho.nascom.nasa.gov - SEO Checker

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Overview of the SEO Check
Meta information
66% 
Page quality
37% 
Page structure
60% 
Link structure
87% 
Server
91% 
External factors
100% 
SEO Score
Response time
0.58 s
File size
11.40 kB
Words
154
Media files
14
Number of links
26 internal / 12 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Solar and Heliospheric Observatory Homepage
The length of the page title is perfect. (423 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
The meta description is missing.
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 character encoding is not specified.
The character encoding is not specified in the HTTP header.
Doctype
(Nice to have)
The doctype HTML 4.01 Transitional is set correctly.
The doctype is placed at first in the HTML code.
Favicon
(Nice to have)
No favicon is linked in the HTML code.

Meta tags

NameValue
Cache-Controlno-cache
Pragmano-cache

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Page quality

Content
(Critically important)
There are only 154 words on this page. Use at least 250 words to provide useful information.
Some words from the page title are not used within the pages content
Only 1 paragraph/s was/were found on this page.
22.7% of the text are stop words.
Words from the H1 heading are used in the page content.
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 18 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 3 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)
4 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
/imgs/soho_top.jpgSOHO
/pickoftheweek/pow_thumb.jpgPick of the Week
/pickoftheweek/old/08apr2024/pow_thumb.jpgPick of the Week
...4/JHV_Screenshot_SOHO_overlay2_thumb.jpgJHelioviewer
/data/realtime/eit_171/512/latest.jpgSOHO
/data/synoptic/sunspots/mdi_sunspots.jpgSOHO
/data/realtime/c2/512/latest.jpgspaceweather
/data/synoptic/sel/satenv-small.gifSOHO
/imgs/sws_dial_4.pngNo alt attribute provided
...lery/SolarCorona/random/sum002_thumb.jpgNo alt attribute provided
.../Helioseismology/random/gol004_thumb.jpgNo alt attribute provided
/gallery/Particle/random/cel004_thumb.jpgNo alt attribute provided
https://soho.nascom.nasa.gov/imgs/nasa.jpgSOHO
https://soho.nascom.nasa.gov/imgs/esa.jpgSOHO

Page structure

H1 heading
(Critically important)
Solar Pick
Too many H1 headings
The H1 heading is too short (10 characters). It should be at least 20 Characters long.
Headings
(Important)
Some headings occur twice on the page.

Heading structure

Heading levelContent
H1 Solar Pick
H1 SOHO sees comet Tsuchinshan-ATLAS (October 14, 2024)
H1 Solar Pick Duplicate text
H1 2024 TOTAL ECLIPSE (APRIL 8, 2024)
H1 SPOTLIGHT
H1 JHelioviewer: A new way of looking at the Sun
Some anchor texts are used more than once.
3 links don't have an anchor text.
There are 2 links with a trivial anchor text.
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
/community/localinfo.htmlAbout us
/home.htmlhome
/about/about.htmlabout
/gallery/gallery
/data/data.htmldata/archive
/operations/operations.htmloperations
/publications/publications.htmlpublications
/newsroom/newsroom.htmlnewsroom
/classroom/classroom.htmlclassroom
/community/community
/pickoftheweek/IMG-ALT Pick of the Week
/pickoftheweek/Subdomain Trivial anchor text
more
/pickoftheweek/old/08apr2024/Text duplicate IMG-ALT Pick of the Week
/pickoftheweek/old/08apr2024/Subdomain Text duplicate Trivial anchor text
more
/hotshots/2010_12_14/IMG-ALT JHelioviewer
/hotshots/2010_12_14/read the story
/data/realtime-images.htmlIMG-ALT SOHO
/sunspots/Text duplicate IMG-ALT SOHO
/spaceweather/IMG-ALT spaceweather
https://www.swpc.noaa.gov/prod...External Subdomain Text duplicate IMG-ALT SOHO
https://space.umd.edu/pm/New window External Subdomain No Text
https://space.umd.edu/pm/New window External Subdomain DOY:336 22:51 UT
https://space.umd.edu/pm/New window External Subdomain Speed:
https://space.umd.edu/pm/New window External Subdomain Density: 4.59 p/cm3
/gallery/bestofsoho.htmlNo Text
/gallery/bestofsoho.htmlNo Text
/gallery/bestofsoho.htmlNo Text
/outreach/New window Outreach Spotlight
http://astronomy2009.esa.int/s...New window External Subdomain Vodcasts
http://svs.gsfc.nasa.gov/vis/a...New window External Subdomain Sentinels of the Heliosphere
/whatsnew/What's New
/freestuff/Free Stuff
/sunworks/exhibit.htmlSunWorks Exhibit
http://soho.esac.esa.int/External Subdomain European Site
http://sohowww.nascom.nasa.gov/External Subdomain US Site
http://sohowww.nascom.nasa.gov...External Subdomain SOHO Webmaster
http://www.nasa.gov/External Subdomain Text duplicate IMG-ALT SOHO
http://www.esa.int/External Subdomain Text duplicate IMG-ALT SOHO

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://soho.nascom.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 of 0.58 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 3 JavaScript files. That's good!
The file size of the HTML document is fine (11 kB).

HTTP Response Header

NameValue
dateMon, 02 Dec 2024 01:51:48 GMT
serverApache
strict-transport-securitymax-age=31536000; includeSubdomains;
accept-rangesbytes
varyAccept-Encoding
content-encodinggzip
content-length3389
content-typetext/html
statuscode200
http_versionHTTP/1.1

External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 1,709 referring domains.
This page has 70,380 backlinks.
This page has backlinks from 1,247 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

No valid Robots.txt file was found.

Similar sites

Search preview

Most important keywords

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

KeywordResultRecheck
Solar68%Check
Pick58%Check
SOHO54%Check
Solar Eclipse54%Check
Total Solar54%Check
Solar Wind52%Check
Total Solar Eclipse49%Check
Observatory46%Check
Sun45%Check
JHelioviewer45%Check
Show more keywords and terms

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