Jlab.org - SEO Checker

Overview of the SEO Check
Meta information
Page quality
Page structure
Link structure
External factors
SEO Score
Response time
0.97 s
File size
40.00 kB
Media files
Number of links
65 internal / 24 external

Task list of SEO Improvements

Meta specifications

(Critically important)
Home | Jefferson Lab
The page title is too short. (194 pixels of 580 max pixel length) Optimize title
There are no duplicate words in the title
Meta description
(Critically important)
The meta description is missing.
(Critically important)
There are no problems in accessing the website.
Canonical URL
There is a valid canonical link specified.
(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.
(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.
(Nice to have)
The doctype HTML 5 is set correctly.
The doctype is placed at first in the HTML code.
(Nice to have)
The favicon is linked correctly.

Meta tags

GeneratorDrupal 8 (https://www.drupal.org)
viewportwidth=device-width, initial-scale=1.0

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Page quality

(Critically important)
There are only 424 words on this page. Good pages should have about 1,000 words of useful content.
These Typos were found:
  • clas => class
The average number of words per sentence of 51 words is high.
20% 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.
3 paragraphs were found on this page.
No placeholders texts or images were found.
There are no duplicates on the site.
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
A viewport "width=device-width, initial-scale=1.0" is provided.
This page only loads 2 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 8 tags for this page.
Image SEO
(Somewhat important)
2 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.
(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
/sites/default/files/energy-logo_1.pngU.S. Department of Energy
...les/images/home/Web_CryomodulePhoto2.jpgtech measuring cryomoduletech measuring cryomodule
...default/files/Web_precisemeasurement.jpgMost Precise Measurement Yet of Neutral Pion Lifetime
...files/images/home/Web_MirrorNucleon2.jpgillustration of nucleons in a mirrorillustration of nucleons in a mirror
/sites/default/files/eic1.jpgNo alt attribute provided
...ie Rodriguez-social-01.jpg?itok=PJALpEwdSalute to Veterans with Bonnie Rodriguez, U.S. Marines and NavySalute to Veterans with Bonnie Rodriguez, U.S. Marines and Navy
..._325x200/public/Seay_5.jpg?itok=Q0291tvWAnita SeayAnita Seay
...00/public/200728_May_0.jpg?itok=Pg6FSnvxBob MayBob May
...c/200729_Jenord_Alston.jpg?itok=toghNE9FJenord AlstonJenord Alston
.../public/Justin_Stevens.jpg?itok=wkzio2STJustin StevensJustin Stevens
...ge_325x200/public/pion.png?itok=ixSPUmxiTwo quarks in a pion, artistically renderedArtistic rendering showing two quarks in a pion
...5x200/public/020822_28.jpg?itok=YkjeVN_LCLAS in Experimental Hall BCLAS in Experimental Hall B
...public/oartrac_image_2.jpg?itok=xovY28e2OARtrac® systemOARtrac® system
...public/jlab_srcs_hallb.jpg?itok=GOVbpHkYProtons Get Zippier in Neutron-Rich NucleiProtons Get Zippier in Neutron-Rich Nuclei
...ic/jlab_hallb_pressure.jpg?itok=ZT7ctuF5No alt attribute provided
...RD_Aerial_0.jpg?h=9ed2daa9&itok=AcYlFC-8JLab site aerialJLab site
...y Wever_COVER_crop_0_0.jpg?itok=MGwN5FuBCarly WeverCarly Wever
...rman_Keegan.jpg?h=2a507234&itok=ik5zo6xKKeegan ShermanKeegan Sherman

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
Some headings occur twice on the page.
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H2 Jefferson Lab Mobile Menu
H2 Jefferson Lab Menu
H2 Cryomodule Makeovers Maintain Accelerator’s Power
H2 Most Precise Measurement Yet of Neutral Pion Lifetime
H2 Physicists Study Mirror Nuclei for Precision Theory Test
H2 The Electron-Ion Collider: The Ultimate Femtoscope
H2 Meet Our People
H2 Our research
H2 News around the lab
H2 Social media
H2 Upcoming events
H2 Upcoming events Duplicate text
H2 Footer menu right 1
H2 Footer menu right 2
H2 For The Public
H2 For Researchers
H2 For Education
H2 For Business
H3 Jefferson Lab Doubles Investment in Proof of Principle R&D
H3 Project Provides Valuable Experience and Opens New Opportunities for CNU Student
H3 Graduate Student Receives DOE Award to Conduct Research at Jefferson Lab
H3 Follow us:
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.
1 links don't have an anchor text.
The number of internal links is ok.
None of the anchor texts is too long.
There are 24 external links on this page.
LinkAttributesAnchor text
https://www.jlab.org/a-z-indexA-Z Index
/user/login?current=/node/4998Sign In
https://www.jlab.org/Text duplicate IMG-ALT Home
https://www.jlab.org/a-z-indexText duplicate A-Z Index
/user/login?current=/node/4998Text duplicate Sign In
http://energy.gov/External IMG-ALT U.S. Department of Energy
https://www.jlab.org/Text duplicate Home
https://www.jlab.org/aboutText duplicate About
https://www.jlab.org/scienceText duplicate Science
/human_resourcesText duplicate Careers
http://status.jlab.org/New window External Subdomain Jefferson Lab is in limited on-site operations for select staff and Users. Visit status.jlab.org for details.
https://www.jlab.org/node/13255Cryomodule Makeovers Maintain Accelerator’s Power
https://www.jlab.org/node/13255Learn more
/news/stories/precise-measurem...Most Precise Measurement Yet of Neutral Pion Lifetime
/news/stories/precise-measurem...Text duplicate Learn more
/news/releases/physicists-stud...Physicists Study Mirror Nuclei for Precision Theory Test
/news/releases/physicists-stud...Text duplicate Learn more
https://www.eiccenter.org/External The Electron-Ion Collider: The Ultimate Femtoscope
https://www.eiccenter.org/External Text duplicate Learn more
/people/november-salute-vetera...IMG-ALT Salute to Veterans with Bonnie Rodriguez, U.S. Marines and Navy
/people/Anita_Seay_Event_Servi...IMG-ALT Anita Seay
/people/Bob_May_ES&H_Deputy_Di...IMG-ALT Bob May
/people/Jenord_Alston_Welding_...IMG-ALT Jenord Alston
/people/Justin_Stevens_Scienti...IMG-ALT Justin Stevens
https://www.jlab.org/peopleMeet Our People
/research/pionslqcdIMG-ALT Two quarks in a pion, artistically rendered
/research/fastpairsIMG-ALT CLAS in Experimental Hall B
/research/oartracIMG-ALT OARtrac® system
/research/zippy_protonsIMG-ALT Protons Get Zippier in Neutron-Rich Nuclei
/research/pressure_protonNo Text
https://www.jlab.org/researchOur research
/pressroom/newsarchivesNews around the lab
/news/releases/jefferson-lab-d...Jefferson Lab Doubles Investment in Proof of Principle R&D
/news/stories/project-provides...Project Provides Valuable Experience and Opens New Opportunities for CNU Student
/news/releases/graduate-studen...Graduate Student Receives DOE Award to Conduct Research at Jefferson Lab
https://www.facebook.com/Jeffe...New window External No Text
https://twitter.com/jlab_newsNew window External No Text
https://www.youtube.com/user/J...New window External No Text
https://www.flickr.com/photos/...New window External No Text
https://twitter.com/JLab_NewsExternal Tweets by JLab_News
/jlab-calendarUpcoming events
/jlab-calendar-listText duplicate Upcoming events
/radcon-peer-reviewRadCon Peer Review
/remote-theory-seminar-0Remote - Theory Seminar
https://www.pnnl.gov/news-medi...New window External Nov 4, 2020COVID-19 Pandemic Sparks 3D Printing Engineering Innovation
https://www.bnl.gov/newsroom/n...New window External Nov 4, 2020ATLAS Experiment Upgrade Wins DOE Project Management Award
https://newscenter.lbl.gov/202...New window External Nov 4, 2020GRETA, a 3D Gamma-Ray Detector, Gets Green Light to Move Forward
https://misportal.jlab.org/External Subdomain INSIGHT for employees
/privacy-and-security-noticePrivacy and Security Notice
https://www.jlab.org/sitemapSite Map
/about/contact-jlabContact JLab
http://status.jlab.org/External Subdomain JLab Status
https://www.jlab.org/aboutFor The Public
https://www.jlab.org/eic/Electron-Ion Collider
A-TITLE Jefferson Lab’s proposed Electron-Ion Collider
https://careers.peopleclick.co...External Subdomain Job Openings
https://www.jlab.org/pressroomPress Room
https://www.jlab.org/researchResearch Highlights
https://www.jlab.org/scientistsFor Researchers
https://www.jlab.org/acceleratorAccelerator Science
https://www.eiccenter.org/External EIC Center
A-TITLE The Electron-Ion Collider Center at Jefferson Lab
/eic-partner-projectEIC Partner Project
https://www.jlab.org/physicsNuclear Physics
https://www.jlab.org/theoryTheory Center
/physics/user-liaisonUser Registration
https://education.jlab.org/External Subdomain For Education
A-TITLE Education
https://education.jlab.org/ind...External Subdomain Games & Puzzles
https://gspda.jlab.org/wiki/in...External Subdomain Postdoc/Grad Students
https://education.jlab.org/ind...External Subdomain Program & Events
https://education.jlab.org/ind...External Subdomain Science Cinema
https://education.jlab.org/ind...External Subdomain Student Zone
https://education.jlab.org/ind...External Subdomain Teacher Tools
/finance/procurementFor Business
A-TITLE Business Services
/about/communityimpactCommunity Impact
/eshq/emergmgtEmergency Preparedness
/about/comms/eventservicesEvent Services
https://misportal.jlab.org/sta...External Subdomain Phone Book
/finance/procurement/smallbusi...Small Business Program
https://www.jlab.org/techtransferTechnology Transfer

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.jlab.org/"
HTTP header
The HTML page should be transferred using GZip compression.
The web server version is sent within the HTTP header.
The X-powered header is sent within the response header. (unnecessary)
(Somewhat important)
The page response time of 0.97 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 3 CSS files. That's ok.
This page only loads 2 JavaScript files. That's good!
The file size of the HTML document is fine (40 kB).

HTTP Response Header

dateThu, 05 Nov 2020 19:38:55 GMT
serverApache/2.4.6 (Red Hat Enterprise Linux)
strict-transport-securitymax-age=63072000; preload
cache-controlmax-age=600, public
link<https://www.jlab.org/>; rel="shortlink", <https://www.jlab.org/>; rel="canonical"
link<https://www.jlab.org/home>; rel="revision"
expiresSun, 19 Nov 1978 05:00:00 GMT
last-modifiedThu, 05 Nov 2020 17:45:06 GMT
x-generatorDrupal 8 (https://www.drupal.org)
content-typetext/html; charset=UTF-8

External factors

(Critically important)
This website is not classified "for adult only".
This website is not listed on the Shallalist.
This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 6,426 referring domains.
This page has 1,358,815 backlinks.
This page has backlinks from 5,246 different ip addresses.
Facebook popularity
(Somewhat important)
This page is not very popular on facebook.
Listed on Webwiki
(Nice to have)
This website is listed on Webwiki.


# robots.txt
# This file is to prevent the crawling and indexing of certain parts
# of your site by web crawlers and spiders run by sites like Yahoo!
# and Google. By telling these "robots" where not to go on your site,
# you save bandwidth and server resources.
# This file will be ignored unless it is at the root of your host:
# Used:    http://example.com/robots.txt
# Ignored: http://example.com/site/robots.txt
# For more information about the robots.txt standard, see:
# http://www.robotstxt.org/robotstxt.html

User-agent: *
# CSS, JS, Images
Allow: /core/*.css$
Allow: /core/*.css?
Allow: /core/*.js$
Allow: /core/*.js?
Allow: /core/*.gif
Allow: /core/*.jpg
Allow: /core/*.jpeg
Allow: /core/*.png
Allow: /core/*.svg
Allow: /profiles/*.css$
Allow: /profiles/*.css?
Allow: /profiles/*.js$
Allow: /profiles/*.js?
Allow: /profiles/*.gif
Allow: /profiles/*.jpg
Allow: /profiles/*.jpeg
Allow: /profiles/*.png
Allow: /profiles/*.svg
# Directories
Disallow: /core/
Disallow: /profiles/
# Files
Disallow: /README.txt
Disallow: /web.config
# Paths (clean URLs)
Disallow: /admin/
Disallow: /comment/reply/
Disallow: /filter/tips
Disallow: /node/add/
Disallow: /search/
Disallow: /user/register/
Disallow: /user/password/
Disallow: /user/login/
Disallow: /user/logout/
# Paths (no clean URLs)
Disallow: /index.php/admin/
Disallow: /index.php/comment/reply/
Disallow: /index.php/filter/tips
Disallow: /index.php/node/add/
Disallow: /index.php/search/
Disallow: /index.php/user/password/
Disallow: /index.php/user/register/
Disallow: /index.php/user/login/
Disallow: /index.php/user/logout/

Facebook popularity

Shares / Likes / Comments

Only the data for the given URL is shown. We cannot determine the social actions for a linked fan page.

Search preview

Home | Jefferson Lab

Most important keywords

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

Jefferson Lab63%Check
Research at Jefferson Lab53%Check
Conduct Research at Jefferson46%Check
Thomas Jefferson46%Check

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