Spark.iop.org - SEO Checker

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Overview of the SEO Check
Meta information
61% 
Page quality
90% 
Page structure
70% 
Link structure
82% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.33 s
File size
48.50 kB
Words
541
Media files
9
Number of links
56 internal / 11 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
IOPSpark
The page title is too short. (86 pixels of 580 max pixel length) Optimize title
The page title is only one word.
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://spark.iop.org/
There is a valid canonical link 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)
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
GeneratorDrupal 10 (https://www.drupal.org)
MobileOptimizedwidth
HandheldFriendlytrue
viewportwidth=device-width, initial-scale=1.0
langen
twitter:cardsummary_large_image
twitter:imagehttps://spark.iop.org/themes/custom/iop_spark/images/metadata/iop_default_social_media.jpg
og:imagehttps://spark.iop.org/themes/custom/iop_spark/images/metadata/iop_default_social_media.jpg
charsetutf-8

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Page quality

Content
(Critically important)
This page contains 541 words. That's ok.
29.9% of the text are stop words.
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.
The average number of words per sentence of 12.58 words is good.
Frames
(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.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 11 tags for this page.
Image SEO
(Somewhat important)
Alt text (alternative text) is correctly used on all found images.
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
...s/custom/iop_spark/images/iop-loader.gifloading
/themes/custom/iop_spark/logo.svgHome
/sites/default/files/media/images/iop.pngInstitute of Physics website
...ult/files/media/images/iop.education.pngEducation section of IOP website
...t/files/media/images/seedash.logo__0.pngSEEdash insights and tools for understanding STEM education in England
...s/default/files/2018-11/IOPRESOURCES.pngIOP RESOURCES
...s/default/files/2018-11/IOPRESOURCES.pngIOP RESOURCES
...s/default/files/2018-11/IOPRESOURCES.pngIOP RESOURCES
...s/default/files/2018-11/IOPRESOURCES.pngIOP RESOURCES

Page structure

H1 heading
(Critically important)
IOPSpark
The H1 heading consists of only one word. There should be more information given.
The H1 heading is too short (8 characters). It should be at least 20 Characters long.
Headings
(Important)
Some headings occur twice on the page.

Heading structure

Heading levelContent
H1 IOPSpark
H2 Physics topics
H2 Selected activities
H2 Teaching Advanced Physics
H2 The Science Teaching Survey 2025
H2 Selected demonstrations
H2 Slink-o-scope
H2 Kettle power
H2 Magnetic force pairs
H2 Colourful convection
H2 Selected demonstrations Duplicate text
H2 Stories from physics: Astronomy and space
H2 DOMAINS CPD videos
H2 Quick demonstrations and activities
H2 Teaching Medical Physics
H2 Marvin and Milo
H2 Teachers of Physics Awards
H3 Physics Links Explorer
H4 Collections
H5 Take a browse
H5 Travel to
H6 Established resources
H6 Popular resources
Some internal link anchor texts are too long.
Some anchor texts are used more than once.
The number of internal links is ok.
All internal links are not using dynamic parameters.
There are 11 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://spark.iop.org/Anchor Skip to main content
https://spark.iop.org/IMG-ALT Home
A-TITLE Home
/physics-cpd-videosCPD
https://spark.iop.org/Collections
A-TITLE Explore our resource collections
/practical-physicsPractical Physics
/supporting-physics-teachingSupporting Physics Teaching
/teaching-advanced-physicsTeaching Advanced Physics
/collections/marvin-and-miloMarvin and Milo
https://spark.iop.org/quickQuick demonstrations and activities
/stories-physicsStories from Physics
/collections/energy-new-curric...Energy in the New Curriculum
/collections/glossaryGlossary
/perspectivesPerspectives
/collections/teaching-medical-...Teaching Medical Physics
/collections/teaching-exoplanetsTeaching Exoplanet Physics
https://spark.iop.org/footballTeaching Football and Physics
/collections/teaching-astronom...Teaching Astronomy and Space
/collections/teaching-radioact...Teaching Radioactivity
/collections/inclusive-teachin...Inclusive teaching resources
/collections/inside-story-phys...Inside Story: Physics in Medicine
https://spark.iop.org/at-homeDo Try This at Home
/casgliad-o-adnoddau-yn-y-gymraegCasgliad o Adnoddau yn y Gymraeg
https://spark.iop.org/collectionsMore...
/misconceptionsMisconceptions
https://spark.iop.org/eventsEvents
A-TITLE Events
/classroom-physicsClassroom Physics
https://beta.iop.org/External Subdomain IMG-ALT Institute of Physics website
http://www.iop.org/educationExternal Subdomain IMG-ALT Education section of IOP website
http://www.seedash.org/External Subdomain IMG-ALT SEEdash insights and tools for understanding STEM education in England
/taxonomy/term/445Earth and Space
/taxonomy/term/446Electricity and Magnetism
/taxonomy/term/447Energy and Thermal Physics
/taxonomy/term/452Forces and Motion
/taxonomy/term/449Light, Sound and Waves
/taxonomy/term/450Properties of Matter
/taxonomy/term/451Quantum and Nuclear
/elastic-band-universeElastic band universe
/circuits-diagramsCircuits on diagrams
/stacked-ball-dropStacked ball drop
/cardboard-arrowsCardboard force arrows
/reversing-arrowReversing arrow
https://spark.iop.org/loaded-shipLoaded ship
/sweet-simulationsSweet simulations
/teaching-advanced-physicsTeaching Advanced Physics The Teaching Advanced Physics collection gives ideas and resources for teaching physics to students aged 16 to 19 years old.
https://schoolzone.questionpro...External Subdomain The Science Teaching Survey 2025 What needs to change in science education? Take the survey now
https://schoolzone.questionpro...External Subdomain Take the survey now
/slink-o-scopeSound Wave Light, Sound and Waves Slink-o-scope In this demonstration students are introduced to a mechanical model of how sound displays on an oscilloscope....
IMG-ALT IOP RESOURCES
/kettle-powerPower Energy and Thermal Physics Kettle power In this demonstration students predict which kettle boils first. You can use it to illustrate that power is the...
IMG-ALT IOP RESOURCES
/magnetic-force-pairsMagnetic Force Electricity and Magnetism Magnetic force pairs This demonstration shows that the forces of attraction between two magnetically interacting obj...
IMG-ALT IOP RESOURCES
/colourful-convectionConvective Heating Energy and Thermal Physics Colourful convection Show that if hot water is below cold water, they mix, but if the situation is reversed the...
IMG-ALT IOP RESOURCES
/stories-spaceThinking About Teaching Collection Stories from physics: Astronomy and space Download the full booklet and explore more stories from physics. Introduction Th...
/collections/domains-cpd-videosThinking About Teaching Collection DOMAINS CPD videos In this collection, you will find short videos to support the teaching of physics... For 11-14 14-16 16...
https://spark.iop.org/quickReady To Teach Collection Quick demonstrations and activities The activities in this collection are all easy to set up, require minimal equipment... For 11-1...
/collections/teaching-medical-...Ready To Teach Collection Teaching Medical Physics The Teaching Medical Physics resources are designed for teaching 14-16 science using... For 14-16 6 Resour...
/marvin-and-miloCurated Collection Marvin and Milo Our intrepid cat and dog team have lots of physics activities for your students to... For 11-14 14-16 155 Resources
https://spark.iop.org/Anchor Back to top
https://www.iop.org/about/awar...New window External Subdomain Start your nomination now
/about-iopsparkAbout IOPSpark
A-TITLE Our mission is to be the best place to start looking for online support in teaching pre-19 physics.
/supporting-physics-teachingNew window Subdomain Text duplicate Supporting Physics Teaching
A-TITLE The Supporting Physics Teaching resources have been created to help you grow your professional subject knowledge.
/teaching-advanced-physicsNew window Subdomain Text duplicate Teaching Advanced Physics
A-TITLE TAP gives ideas and resources for teaching physics to students aged 16–19.
/practical-physicsNew window Subdomain Text duplicate Practical Physics
A-TITLE Practical activities designed for use in the classroom with 11 to 19 year olds.
/website-accessibilityAccessibility
A-TITLE Website accessibility
https://beta.iop.org/copyrightNew window External Subdomain Copyright
A-TITLE Copyright
https://beta.iop.org/disclaimerNew window External Subdomain Disclaimer
A-TITLE Disclaimer
https://beta.iop.org/privacy-n...New window External Subdomain Privacy
A-TITLE Privacy notice
https://beta.iop.org/terms-and...New window External Subdomain Terms & Conditions
A-TITLE Terms and conditions
https://www.catchdigital.com/New window External Subdomain Website by Catch

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://spark.iop.org/"
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 0.33 seconds.
The file size of the HTML document is fine (49 kB).

HTTP Response Header

NameValue
dateTue, 22 Jul 2025 17:05:00 GMT
content-typetext/html; charset=UTF-8
content-encodingbr
cache-controlmax-age=43200, public
content-languageen
expiresSun, 19 Nov 1978 05:00:00 GMT
last-modifiedTue, 22 Jul 2025 15:00:14 GMT
x-content-type-optionsnosniff
x-drupal-cacheMISS
x-drupal-dynamic-cacheUNCACHEABLE (poor cacheability)
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x-frame-optionsSAMEORIGIN
x-permitted-cross-domain-policiesmaster-only
servercloudflare
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statuscode200
http_versionHTTP/2

External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 43 referring domains.
This page has 172 backlinks.
This page has backlinks from 40 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

#
# 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.md
Disallow: /composer/Metapackage/README.txt
Disallow: /composer/Plugin/ProjectMessage/README.md
Disallow: /composer/Plugin/Scaffold/README.md
Disallow: /composer/Plugin/VendorHardening/README.txt
Disallow: /composer/Template/README.txt
Disallow: /modules/README.txt
Disallow: /sites/README.txt
Disallow: /themes/README.txt
Disallow: /web.config
# Paths (clean URLs)
Disallow: /admin/
Disallow: /comment/reply/
Disallow: /filter/tips
Disallow: /node/add/
Disallow: /search
Disallow: /search/
Disallow: /user/register
Disallow: /user/password
Disallow: /user/login
Disallow: /user/logout
Disallow: /media/oembed
Disallow: /*/media/oembed
# 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/search/
Disallow: /index.php/user/password
Disallow: /index.php/user/register
Disallow: /index.php/user/login
Disallow: /index.php/user/logout
Disallow: /index.php/media/oembed
Disallow: /index.php/*/media/oembed

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spark.iop.org
IOPSpark

Most important keywords

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

KeywordResultRecheck
IOP77%Check
IOPSpark62%Check
resources46%Check
Physics44%Check
teaching resources44%Check
Teaching43%Check
activities43%Check
demonstration43%Check
demonstrations43%Check
Selected43%Check
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