Scienceexchange.caltech.edu - SEO Checker

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Overview of the SEO Check
Meta information
98% 
Page quality
65% 
Page structure
79% 
Link structure
73% 
Server
100% 
External factors
81% 
SEO Score
Response time
0.19 s
File size
59.20 kB
Words
460
Media files
33
Number of links
71 internal / 3 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Caltech Science Exchange
The length of the page title is perfect. (242 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Find trustworthy answers, clear explanations, and fact-driven conversation on critical topics in science and technology.
The length of the meta description is perfect. (726 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
Language defined in HTML: en
Server location: Canada
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)
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
descriptionFind trustworthy answers, clear explanations, and fact-driven conversation on critical topics in science and technology.
viewportwidth=device-width, initial-scale=1
msapplication-TileColor#D14900
msapplication-TileImage/static/core/img/favicon-144.png?v=6.6.15
msapplication-config/static/core/img/browserconfig.xml?v=6.6.15
og:image:altCaltech Science Exchange logo
langen
twitter:titleCaltech Science Exchange
twitter:descriptionFind trustworthy answers, clear explanations, and fact-driven conversation on critical topics in science and technology.
twitter:cardsummary_large_image
twitter:imagehttps://caltechsites-prod.s3.amazonaws.com/scienceexchange/images/Caltech-Science-Exchange-Logo-400x400.width-600.png
og:urlhttp://scienceexchange.caltech.edu/
og:site_nameCaltech Science Exchange
og:titleCaltech Science Exchange
og:typewebsite
og:descriptionFind trustworthy answers, clear explanations, and fact-driven conversation on critical topics in science and technology.
og:imagehttps://caltechsites-prod.s3.amazonaws.com/scienceexchange/images/Caltech-Science-Exchange-Logo-400x400.width-600.png
X-UA-CompatibleIE=edge
charsetutf-8

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Page quality

Content
(Critically important)
There are only 460 words on this page. Good pages should have about 800 words of useful content.
27.6% 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.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 17.8 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
A viewport "width=device-width, initial-scale=1" is provided.
At least one Apple touch icon is specified.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 9 tags for this page.
Image SEO
(Somewhat important)
25 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
/static/core/img/caltech-new-logo.pngCaltech
...ange-Logo-FINAL-No-Wordm.max-600x300.pngCaltech Science Exchange wordmark
/static/wagtail_menu/img/icon-search.pngNo alt attribute provided
/static/wagtail_menu/img/menu-burger.pngNo alt attribute provided
/static/wagtail_menu/img/icon-search.pngNo alt attribute provided
...ech-orig.2e16d0ba.fill-1600x500-c100.jpgCaltech Science Exchange
...AI-tinted.2e16d0ba.fill-650x365-c100.jpgBlue and orange filtered image of a human hand touching with robot
...otone-WEB.2e16d0ba.fill-650x365-c100.jpgAn illustration of a brain in soft, duotone colors, blending teal and orange hues. The lines defining the brain's anatomy are faint but detailed, highlighting the cerebral cortex and other brain structures against a gradient background.
...Exchange-.2e16d0ba.fill-650x365-c100.jpgA magnifying glass identifies a potential file with voter fraud
...lage-Tint.2e16d0ba.fill-650x365-c100.jpgIllustration of an MRI machine, semi-conductor, clock, toaster, light bulb, and laser black on tinted purple and orange background
...airspace/img/icon-chevron-white-left.pngNo alt attribute provided
...irspace/img/icon-chevron-white-right.pngNo alt attribute provided
/static/airspace/img/icon-quicklink.pngNo alt attribute provided
/static/airspace/img/icon-quicklink.pngNo alt attribute provided
/static/airspace/img/icon-quicklink.pngNo alt attribute provided
/static/airspace/img/icon-quicklink.pngNo alt attribute provided
/static/airspace/img/icon-quicklink.pngNo alt attribute provided
/static/airspace/img/icon-quicklink.pngNo alt attribute provided
/static/airspace/img/icon-quicklink.pngNo alt attribute provided
/static/airspace/img/icon-quicklink.pngNo alt attribute provided
/static/airspace/img/icon-quicklink.pngNo alt attribute provided
/static/airspace/img/icon-quicklink.pngNo alt attribute provided
/static/airspace/img/icon-quicklink.pngNo alt attribute provided
/static/airspace/img/icon-quicklink.pngNo alt attribute provided
/static/airspace/img/icon-quicklink.pngNo alt attribute provided
/static/airspace/img/icon-quicklink.pngNo alt attribute provided
/static/airspace/img/icon-quicklink.pngNo alt attribute provided
/static/airspace/img/icon-quicklink.pngNo alt attribute provided
/static/airspace/img/icon-quicklink.pngNo alt attribute provided
/static/airspace/img/icon-quicklink.pngNo alt attribute provided
/static/theme-v7.0/img/flame.pngNo alt attribute provided
/static/core/img/caltech-new-logo.pngCaltech
/static/theme-v7.0/img/icon-footerpin.pngNo alt attribute provided

Page structure

H1 heading
(Critically important)
Caltech Science Exchange
The H1 heading is perfect.
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H1 Caltech Science Exchange
H2 Science Explained
H2 Essential Perspective
H2 Have a Question?
H2 Explore Topics
H6 ASK A QUESTION >
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 3 external links on this page.

Found links on this page

LinkAttributesAnchor text
/Anchor skip to main content
https://www.caltech.edu/External Subdomain IMG-ALT Caltech
/IMG-ALT Caltech Science Exchange wordmark
/topicsTopics
/topics/artificial-intelligenc...Artificial Intelligence
/topics/covid-19-coronavirus-s...COVID-19 and Viruses
/topics/earthquakesEarthquakes
/topics/sustainability/ask-exp...Greater Los Angeles Fires
/topics/neuroscienceNeuroscience
/topics/quantum-science-explainedQuantum Science and Technology
/topics/sustainabilitySustainability
/topics/voting-electionsVoting and Elections
/connect/after-the-firesAfter the Fires Podcast
/connect/ask-a-questionAsk a Question
/connect/conversationsCaltech Conversations
/connect/conversations/convers...Conversations on Sustainability
/connect/conversations/convers...Conversations on COVID-19
/connect/conversations/convers...Conversations on the Quantum World
/connect/conversations/convers...Conversations on Artificial Intelligence
/connect/conversations/convers...Conversations After the Fires
/connect/resources-for-student...Resources for Students & Educators
/aboutAbout
/topicsText duplicate Topics
/aboutText duplicate About
/topics/artificial-intelligenc...Text duplicate Artificial Intelligence
/topics/covid-19-coronavirus-s...Text duplicate COVID-19 and Viruses
/topics/earthquakesText duplicate Earthquakes
/topics/sustainability/ask-exp...Text duplicate Greater Los Angeles Fires
/topics/neuroscienceText duplicate Neuroscience
/topics/quantum-science-explainedText duplicate Quantum Science and Technology
/topics/sustainabilityText duplicate Sustainability
/topics/voting-electionsText duplicate Voting and Elections
/connect/after-the-firesText duplicate After the Fires Podcast
/connect/ask-a-questionText duplicate Ask a Question
/connect/conversationsText duplicate Caltech Conversations
/connect/conversations/convers...Text duplicate Conversations on Sustainability
/connect/conversations/convers...Text duplicate Conversations on COVID-19
/connect/conversations/convers...Text duplicate Conversations on the Quantum World
/connect/conversations/convers...Text duplicate Conversations on Artificial Intelligence
/connect/conversations/convers...Text duplicate Conversations After the Fires
/connect/resources-for-student...Text duplicate Resources for Students & Educators
/topics/artificial-intelligenc...Can We Trust AI?
IMG-ALT Blue and orange filtered image of a human hand touching with robot
/topics/neuroscience/how-the-b...How Does the Human Brain Work?
IMG-ALT An illustration of a brain in soft, duotone colors, blending teal and orange hues. The lines defining the brain's anatomy are faint but detailed, highlightin...
/topics/voting-elections/voter...How Do Election Officials Check for and Prevent Voter-Registration Fraud?
IMG-ALT A magnifying glass identifies a potential file with voter fraud
/topics/quantum-science-explai...How Are Quantum Phenomena Used in Technology Today?
IMG-ALT Illustration of an MRI machine, semi-conductor, clock, toaster, light bulb, and laser black on tinted purple and orange background
/connect/ask-a-questionASK A QUESTION >
/topics/covid-19-coronavirus-s...COVID-19 and other viral threats
/topics/voting-electionsvoting and elections
/topics/earthquakesearthquakes
/topics/sustainabilitysustainability
/topics/quantum-science-explainedquantum physics
/topics/artificial-intelligenc...artificial intelligence
/topics/neuroscienceneuroscience
/topics/artificial-intelligenc...Text duplicate Artificial Intelligence
/topics/covid-19-coronavirus-s...Text duplicate COVID-19 and Viruses
/topics/earthquakesText duplicate Earthquakes
/topics/sustainabilityText duplicate Sustainability
/topics/quantum-science-explainedText duplicate Quantum Science and Technology
/topics/voting-electionsText duplicate Voting and Elections
/topics/neuroscienceText duplicate Neuroscience
/Scientific Practice (Coming Soon)
/Biotechnology (Coming Soon)
/topics/artificial-intelligenc...Text duplicate Artificial Intelligence
/topics/covid-19-coronavirus-s...Text duplicate COVID-19 and Viruses
/topics/earthquakesText duplicate Earthquakes
/topics/sustainabilityText duplicate Sustainability
/topics/quantum-science-explainedText duplicate Quantum Science and Technology
/topics/voting-electionsText duplicate Voting and Elections
/topics/neuroscienceText duplicate Neuroscience
/Text duplicate Scientific Practice (Coming Soon)
/Text duplicate Biotechnology (Coming Soon)
/about/content-use-policyContent Use Policy
https://digitalaccessibility.c...External Subdomain Digital Accessibility
https://www.caltech.edu/privac...External Subdomain Privacy Notice

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://scienceexchange.caltech.edu/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
The web server transmits the web page (HTML) in compressed form.
Performance
(Somewhat important)
The page response time is excellent with 0.19 seconds.
The file size of the HTML document is fine (59 kB).

HTTP Response Header

NameValue
dateMon, 07 Jul 2025 23:21:09 GMT
content-typetext/html; charset=utf-8
cdn-cache-controlpublic, max-age=600
cross-origin-opener-policysame-origin
permissions-policyaccelerometer=(), camera=(), gyroscope=(), magnetometer=(), microphone=()
referrer-policystrict-origin-when-cross-origin
varyCookie,Accept-Encoding
x-content-type-optionsnosniff
x-frame-optionsSAMEORIGIN
last-modifiedMon, 07 Jul 2025 23:17:32 GMT
cf-cache-statusHIT
age217
set-cookie277 Characters
servercloudflare
cf-ray95bb1398ac8a0496-CDG
content-encodinggzip
statuscode200
http_versionHTTP/2

External factors

This page is very well linked from other websites.
This page has backlinks from 27 referring domains.
This page has 116,581 backlinks.
This page has backlinks from 23 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

User-agent: SemrushBot
Disallow: /

User-agent: BLP_bbot
Disallow: /

User-agent: *
Disallow: /map/landmark_ajax/*
Disallow: /map/milestone/*
Crawl-delay: 10
Allow: *
Sitemap: https://scienceexchange.caltech.edu/sitemap.xml

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scienceexchange.caltech.edu
Caltech Science Exchange
Find trustworthy answers, clear explanations, and fact-driven conversation on critical topics in science and technology.

Most important keywords

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

KeywordResultRecheck
Science93%Check
Caltech Science86%Check
Science Exchange86%Check
Caltech Science Exchange84%Check
Caltech77%Check
Exchange77%Check
Science and Technology63%Check
Caltech Conversations56%Check
Topics50%Check
Trust48%Check
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