Desi.lbl.gov - SEO Checker

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Overview of the SEO Check
Meta information
77% 
Page quality
62% 
Page structure
70% 
Link structure
90% 
Server
48% 
External factors
100% 
SEO Score
Response time
1.45 s
File size
60.40 kB
Words
647
Media files
10
Number of links
82 internal / 18 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Dark Energy Spectroscopic Instrument (DESI)
The length of the page title is perfect. (413 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)
https://www.desi.lbl.gov/
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en-gb
Server location: United States of America
The following language is defined by HTML: en-gb
Alternate/Hreflang Links
(Somewhat important)
Language for link pointing to page itself inaccurate
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
viewportwidth=device-width, initial-scale=1
robotsmax-image-preview:large
langen-gb
charsetUTF-8

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Page quality

Content
(Critically important)
The average number of words per sentence of 31 words is high.
This page contains 647 words. That's ok.
26.7% of the text are stop words.
Keywords used in the page title are also used in the page content. That's good!
Words from the H1 heading are used in the page content.
The page contains a listing, which indicates a good text layout.
7 paragraphs were found on this page.
The text content is perfect.
No placeholders texts or images were found.
There are no duplicates on the site.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
This page loads 13 JavaScript files. This may affect the load time negatively.
A viewport "width=device-width, initial-scale=1" is provided.
Bold and strong tags
(Somewhat important)
Some tags are too long. With 73 characters this one is longer than 70 characters:
"dark energy spectroscopic instrument creates largest 3d map of the cosmos"
Image SEO
(Somewhat important)
6 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
...ent/uploads/sites/8/2018/06/member-1.pngNo alt attribute provided
...tent/uploads/sites/8/2018/06/science.pngNo alt attribute provided
...uploads/sites/8/2018/06/instrument-1.jpgNo alt attribute provided
...s/sites/8/2024/08/2_DSC_0141-500x500.jpgNo alt attribute provided
...2024/06/LSStechplot4wiki_new-500x500.pngNo alt attribute provided
...sites/8/2024/05/noirlab2414h-500x500.jpgNo alt attribute provided
...ads/sites/8/2018/06/[email protected]twitter
...s/sites/8/2018/06/[email protected]instagram
...ds/sites/8/2018/06/[email protected]facebook
Video URLWidthHeight
https://vimeo.com/422889846?loop=0&_=1

Page structure

H1 heading
(Critically important)
Dark Energy Spectroscopic Instrument (DESI)
Too many H1 headings
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 Dark Energy Spectroscopic Instrument (DESI)
H1 Tweets by desisurvey
H2 home
H2 Main Content
H2 The Dark Energy Spectroscopic Instrument (DESI)
H2 Footer
H3 Highlights
H3 MEET A MEMBER
H3 SCIENCE
H3 BLOG
H3 DESI Begins
H3 Latest Blog Posts
H3 Latest Press Releases
H4 First Cosmology Results from DESI
H4 5000 Eyes: Mapping the Universe with DESI is out now!
H4 “5000 Eyes” Premieres in Mexico City
H4 DESI 2024 Supporting Papers: June 11 Guide
H4 DESI Joins in Hosting Kitt Peak Open Night for Tohono O’odham Nation; BaoBan Makes Guest Appearances
H5 DESI Science en Español, en Français, 한국어로, 简体中文, ქართული, em Português, auf Deutsch, en Català, in Italiano.
H6 DESI has created the largest 3D map of our universe. The Universe’s expansion history is now known to better than 1% precision, yielding the best picture yet of how the universe has evolved over th...
H6 DESI's very own planetarium show is available for free to all planetariums. See the trailer and find more information here.
H6 Translations in French, Spanish, Mandarin, and German are now available.
Some anchor texts are used more than once.
3 links don't have an anchor text.
There are 1 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 18 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://www.desi.lbl.gov/Anchor Skip to main content
https://www.desi.lbl.gov/Anchor Skip to footer
https://www.desi.lbl.gov/Subdomain Dark Energy Spectroscopic Instrument (DESI)
https://www.desi.lbl.gov/science/Subdomain / science /
https://www.desi.lbl.gov/science/Subdomain science overview
/cosmology-and-dark-energy/Subdomain cosmology and dark energy
/redshifts-and-distance/Subdomain redshifts and distance
/mapping-the-universe/Subdomain mapping the universe
/the-desi-science-mission/Subdomain the DESI science mission
/the-desi-survey/Subdomain the DESI survey
/imaging-surveys/Subdomain imaging surveys
/instrument/Subdomain / instrument /
/instrument/Subdomain instrument overview
/telescope/Subdomain telescope
/tohono-oodham/Subdomain tohono o’odham
/corrector/Subdomain corrector
/focal-plane-system/Subdomain focal plane system
/fiber-system/Subdomain fiber system
/spectrograph/Subdomain spectrograph
/instrument-control-system/Subdomain instrument control system
/data-systems/Subdomain data systems
/bringing-desi-to-life/Subdomain bringing DESI to life
/bringing-desi-to-life/commiss...Subdomain commissioning Instrument
/bringing-desi-to-life/protodesi/Subdomain protoDESI
/collaboration/Subdomain / collaboration /
/trac/wiki/PublicPages/ContactsSubdomain DESI team
/collaboration/desi-builders/Subdomain DESI builders
/collaborating-institutions/Subdomain collaborating institutions
/sponsors/Subdomain sponsors
https://www.desi.lbl.gov/vendors/Subdomain vendors
/diversity/Subdomain diversity, equity, and inclusion
/policies/Subdomain collaboration policies
/category/announcements// press /
/category/announcements/Subdomain announcements
/category/news/Subdomain in the news
/category/press-releases/Subdomain press releases
/category/blog/Subdomain blog
https://twitter.com/desisurvey...External tweets by desisurvey
/acknowledgements/Subdomain acknowledgments
https://www.desi.lbl.gov/photos// galleries /
https://www.desi.lbl.gov/photos/Subdomain image gallery
https://www.desi.lbl.gov/videos/Subdomain videos
/for-scientists// for scientists /
https://data.desi.lbl.gov/docExternal Subdomain data releases
/for-scientists/instrument-des...Subdomain instrument design
/for-scientists/imaging-data/Subdomain imaging data
/for-scientists/target-selecti...Subdomain target selection and survey validation
/for-scientists/theory-and-sim...Subdomain theory and simulations
/for-scientists/other-desi-sci...Subdomain other DESI science
https://ui.adsabs.harvard.edu/...External Subdomain all DESI papers
https://desi.lbl.gov/trac/loginNew window Subdomain team login
/for-scientists/request-a-desi...Subdomain request a DESI speaker
/for-scientists/internal/Subdomain internal
/education-outreach/Subdomain / education & outreach /
/education-outreach/meet-a-des...Subdomain meet a DESI member
/category/blog/Subdomain Text duplicate blog
/education-outreach/planetariu...Subdomain planetarium show
/education-outreach/desi-high/Subdomain DESI high
/education-outreach/interactiv...Subdomain interactive visualizations
/education-outreach/swag-shop/Subdomain swag shop
/2024/04/04/first-cosmology-re...New window Subdomain announcement
https://newscenter.lbl.gov/202...New window External Subdomain BerkeleyLab Press Release.
https://www.youtube.com/watch?...New window External Subdomain APS
https://moriond.in2p3.fr/2024/...New window External Subdomain Moriond
https://www.youtube.com/watch?...New window External Subdomain Youtube
/es/science-spanishSubdomain en Español
/fr/science-frenchSubdomain en Français
/ko/science-koreanSubdomain 한국어로
/zh/science-chineseSubdomain 简体中文
/ka/science-georgianSubdomain ქართული
/pt/science-portugueseSubdomain em Português
/de/science-germanSubdomain auf Deutsch
/ca/science-catalanSubdomain en Català
/it/science-italianSubdomain in Italiano
/education-outreach/planetariu...Subdomain 5000 Eyes: Mapping the Universe with DESI
https://www.youtube.com/watch?...New window External Subdomain trailer
/education-outreach/planetariu...Subdomain Trivial anchor text
here
/education-outreach/meet-a-des...Subdomain MEET A MEMBER
https://www.desi.lbl.gov/science/SCIENCE
/category/blog/Subdomain BLOG
https://vimeo.com/422889846?lo...External URL anchor text
https://vimeo.com/422889846?loop=0
/2024/08/06/5000-eyes-premiere...Subdomain No Text
/2024/08/06/5000-eyes-premiere...Subdomain “5000 Eyes” Premieres in Mexico City
/2024/06/11/desi-2024-supporti...Subdomain No Text
/2024/06/11/desi-2024-supporti...Subdomain DESI 2024 Supporting Papers: June 11 Guide
/2024/05/30/desi-joins-in-host...Subdomain No Text
/2024/05/30/desi-joins-in-host...Subdomain DESI Joins in Hosting Kitt Peak Open Night for Tohono O’odham Nation; BaoBan Makes Guest Appearances
https://twitter.com/desisurvey...External Tweets by desisurvey
https://newscenter.lbl.gov/202...New window External Subdomain DESI Early Data Release Holds Nearly Two Million Objects
https://newscenter.lbl.gov/202...New window External Subdomain New DESI Planetarium Show to Premiere in 2023
/2022/10/07/desi-resumes-catal...New window Subdomain DESI Resumes Cataloguing the Cosmos
/2022/01/13/dark-energy-spectr...New window Subdomain Dark Energy Spectroscopic Instrument Creates Largest 3D Map of the Cosmos
https://desi.lbl.gov/trac/loginSubdomain TEAM LOGIN
https://twitter.com/desisurveyNew window External IMG-ALT twitter
https://www.instagram.com/desi...New window External Subdomain IMG-ALT instagram
https://www.facebook.com/DESI-...New window External Subdomain IMG-ALT facebook
http://my.studiopress.com/them...External Subdomain Parallax Pro DESI
https://www.studiopress.com/External Subdomain Genesis Framework
https://wordpress.org/External WordPress
/wp-login.phpSubdomain Log in

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.desi.lbl.gov/"
HTTP header
(Important)
The X-powered header is sent within the response header. (unnecessary)
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
The page response time is slow (1.45 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 6 CSS files. This may affect the page load time negatively.
This page loads 13 JavaScript files. This may affect the load time negatively.
The file size of the HTML document is fine (60 kB).

HTTP Response Header

NameValue
dateSat, 10 Aug 2024 06:50:30 GMT
content-typetext/html; charset=UTF-8
transfer-encodingchunked
connectionkeep-alive
varyAccept-Encoding
link<https://www.desi.lbl.gov/wp-json/>; rel="https://api.w.org/"
x-powered-byWP Engine
x-cacheablebot
cache-controlmax-age=10800, must-revalidate
x-cacheHIT: 12
x-cache-groupbot
cf-cache-statusDYNAMIC
strict-transport-securitymax-age=31536000
servercloudflare
cf-ray8b0e0d50c9c66909-FRA
content-encodinggzip
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 691 referring domains.
This page has 3,911 backlinks.
This page has backlinks from 551 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

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
DESI76%Check
Instrument72%Check
Dark Energy Spectroscopic Instrument71%Check
Energy70%Check
Dark70%Check
Spectroscopic70%Check
Dark Energy70%Check
DESI science58%Check
DESI survey56%Check
DESI 202455%Check
Show more keywords and terms

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