Npl.co.uk - SEO Checker

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Overview of the SEO Check
Meta information
91% 
Page quality
95% 
Page structure
58% 
Link structure
25% 
Server
84% 
External factors
100% 
SEO Score
Response time
0.56 s
File size
74.70 kB
Words
1057
Media files
7
Number of links
294 internal / 11 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
National Physical Laboratory - impact from science - NPL
The length of the page title is perfect. (510 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
National Physical Laboratory (NPL) is the UK’s National Metrology Institute, providing the measurement capability that underpins the UK’s prosperity and quality of life.
The meta description is too long: 1023 pixels from max. 1000 pixels. Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.npl.co.uk/
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en
Server location: United Kingdom of Great Britain and Northern Ireland
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
viewportwidth=device-width, initial-scale=1, user-scalable=no
descriptionNational Physical Laboratory (NPL) is the UK’s National Metrology Institute, providing the measurement capability that underpins the UK’s prosperity and quality of life.
langen
twitter:cardsummary
twitter:domainwww.npl.co.uk
twitter:urlhttps://www.npl.co.uk/
twitter:titleNational Physical Laboratory - impact from science - NPL
twitter:descriptionNational Physical Laboratory (NPL) is the UK’s National Metrology Institute, providing the measurement capability that underpins the UK’s prosperity and quality of life.
twitter:imagehttps://www.npl.co.uk/getmedia/08f4ff46-09c6-4590-8376-22765069281d/mass-spec-imaging-og.jpg?width=395
og:urlhttps://www.npl.co.uk/
og:typewebsite
og:titleNational Physical Laboratory - impact from science - NPL
og:descriptionNational Physical Laboratory (NPL) is the UK’s National Metrology Institute, providing the measurement capability that underpins the UK’s prosperity and quality of life.
og:imagehttps://www.npl.co.uk/getmedia/08f4ff46-09c6-4590-8376-22765069281d/mass-spec-imaging-og.jpg
charsetUTF-8

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Page quality

Content
(Critically important)
This page contains 1057 words. That's ok.
23.6% 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.
8 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 20.33 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, user-scalable=no" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 21 tags for this page.
Image SEO
(Somewhat important)
Alt text (alternative text) is correctly used on all found images.
Social Networks
(Nice to have)
This page is optimized perfectly for social networks.
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
...530&height=300&ext=.jpg&ext=.jpgDelivering impact
...LinkedIn.png?width=55&height=55&ext=.pngLinkedIn
...witter-X.png?width=55&height=55&ext=.pngTwitter
...Facebook.png?width=55&height=55&ext=.pngFacebook
...nstagram.png?width=55&height=55&ext=.pngInstagram
...-YouTube.png?width=55&height=55&ext=.pngYouTube

Page structure

H1 heading
(Critically important)
125 years of impact from science
The H1 heading is perfect.
Headings
(Important)
Some headings occur twice on the page.
There are 38 headings on the page. The amount of headings should be in a more proper relation to the amount of text.

Heading structure

Heading levelContent
H1 125 years of impact from science
H2 For people, place, prosperity and planet, we deliver impact with measurement science
H2 125 years of impact from science Duplicate text
H2 Measurement for Business
H2 Measurement for Quantum
H2 Measurement services from NPL
H2 UK Telecoms Lab drives the security and resilience of future telecoms
H2 Tribology testing ebook
H2 Condition monitoring
H2 Innovation in action
H2 National challenges
H2 News and views
H2 Enduring capability
H2 Contact us
H3 Biosciences
H3 Chemical analysis
H3 Acoustics
H3 Communications
H3 Engineering
H3 Environmental monitoring
H3 Ionising radiation
H3 Materials
H3 Research
H3 Biosciences Duplicate text
H3 Chemical analysis Duplicate text
H3 Acoustics Duplicate text
H3 Communications Duplicate text
H3 Engineering Duplicate text
H3 Environmental monitoring Duplicate text
H3 Ionising radiation Duplicate text
H3 Materials Duplicate text
H3 Products and services
H3 Industries
H3 About us
H3 Careers
H3 Resources
H3 Skills and learning
H4 The National Physical Laboratory celebrates 125 years of supporting business growth, innovation and impact.
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 11 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://www.npl.co.uk/Anchor Skip to content
https://www.npl.co.uk/Home
A-TITLE Home
https://www.npl.co.uk/contactContact us
https://www.npl.co.uk/Text duplicate Home
https://www.npl.co.uk/researchResearch
https://www.npl.co.uk/researchOverview
https://www.npl.co.uk/biosciencesBiosciences
https://www.npl.co.uk/biosciencesText duplicate Biosciences
/biometrologyBiometrology
/mass-spectrometryMass spectrometry imaging
/surface-technologySurface technology
/chemical-analysisChemical analysis
/chemical-analysisText duplicate Chemical analysis
/electrochemistryElectrochemistry
/gas-particle-metrologyGas and particle metrology
/surface-technologyText duplicate Surface technology
/mass-spectrometryMass spectrometry
https://www.npl.co.uk/acousticsAcoustics
https://www.npl.co.uk/acousticsText duplicate Acoustics
https://www.npl.co.uk/ultrasoundUltrasound
/underwater-acousticsUnderwater acoustics
/communicationsCommunications
/communicationsText duplicate Communications
/electromagneticsElectromagnetics
/quantum-detectionQuantum detection
/time-frequencyTime and frequency
/data-scienceData science
https://www.npl.co.uk/engineeringEngineering
https://www.npl.co.uk/engineeringText duplicate Engineering
https://www.npl.co.uk/dimensionalDimensional metrology
/electrochemistryText duplicate Electrochemistry
/electronic-magnetic-materialsElectronic and magnetic materials
/mass-mechanical-measurementMass and mechanical measurement
/temperature-and-humidityTemperature and humidity
/environmental-monitoringEnvironmental monitoring
/environmental-monitoringText duplicate Environmental monitoring
/air-quality-aerosol-metrologyAir quality and aerosol metrology
/earth-observationEarth observation, climate and optical
/emissions-atmospheric-metrologyEmissions and atmospheric metrology
/gas-particle-metrologyText duplicate Gas and particle metrology
/temperature-and-humidityText duplicate Temperature and humidity
/underwater-acousticsText duplicate Underwater acoustics
/ionising-radiationIonising radiation
/ionising-radiationText duplicate Ionising radiation
/radiation-dosimetryRadiation dosimetry
/nuclear-metrologyNuclear metrology
https://www.npl.co.uk/materialsMaterials
https://www.npl.co.uk/materialsText duplicate Materials
/advanced-materialsAdvanced materials
https://www.npl.co.uk/dimensionalText duplicate Dimensional metrology
/electrochemistryText duplicate Electrochemistry
/electronic-magnetic-materialsText duplicate Electronic and magnetic materials
https://www.npl.co.uk/grapheneGraphene
/surface-technologyText duplicate Surface technology
/medical-physicsMedical physics
https://www.npl.co.uk/quantumQuantum technologies
/time-frequencyText duplicate Time and frequency
/products-servicesProducts and services
/products-servicesProducts and services A to Z
https://www.npl.co.uk/consultancyConsultancy
/products-services/calibrationCalibration
https://training.npl.co.uk/External Subdomain Training
/products-services/instrumentsInstruments
/products-services/commerciali...Commercialising technology
https://www.npl.co.uk/industries/Industries
https://www.npl.co.uk/aerospaceAerospace
https://www.npl.co.uk/automotiveAutomotive
/defence-and-securityDefence and security
https://www.npl.co.uk/energyEnergy and utilities
https://www.npl.co.uk/environmentEnvironment
https://www.npl.co.uk/financeFinance
/food-and-agritechFood and agritech
/industries/healthcareHealthcare
/industries/it-and-telecomsIT and telecoms
/life-sciencesLife sciences
/industries/manufacturingManufacturing
/industries/medical-devicesMedical devices
/industries/oil-and-gasOil and gas
https://www.npl.co.uk/spaceSpace
/national-challenges/National challenges
/case-studiesCase studies
/government/major-programmesMajor programmes
https://www.npl.co.uk/about-us/About us
https://www.npl.co.uk/about-us/Text duplicate About us
A-TITLE Back to main menu
https://www.npl.co.uk/about-usText duplicate Overview
https://www.npl.co.uk/peoplePeople
/about-us/national-metrology-i...National Metrology Institute
/about-us/diversity-and-inclusionDiversity and inclusion
https://www.npl.co.uk/locationsLocations
/about-us/who-we-work-withWho we work with
/about-us/internationalInternational reach
/about-us/corporate-informatio...Strategic partners
/about-us/historyHistory
/about-us/corporate-informationCorporate information
https://www.npl.co.uk/careers/Careers
https://www.npl.co.uk/careers/Text duplicate Careers
A-TITLE Back to main menu
https://www.npl.co.uk/careersText duplicate Overview
/careers/current-vacanciesCurrent vacancies
/careers/the-measure-of-usThe measure of us
/careers/apprenticeshipsApprenticeships
/careers/work-experienceWork experience
/careers/early-careersEarly careers
https://www.npl.co.uk/Events/Events
/news-and-press-officeNews & Press Office
/resources/q-aQuestions and answers
https://www.npl.co.uk/Resources/Resources
https://www.npl.co.uk/Resources/Text duplicate Resources
A-TITLE Back to main menu
https://www.npl.co.uk/resourcesText duplicate Overview
https://www.npl.co.uk/si-unitsSI units
/resources/measure-of-our-successOur impact: The Measure of our Success
/resources/questions-and-answersText duplicate Questions and answers
https://www.npl.co.uk/msf-signalMSF signal
/resources/good-practice-guidesGood practice guides
http://eprintspublications.npl...External Subdomain Publications repository
https://www.npl.co.uk/softwareSoftware
/Skills-Learning/Skills and learning
/Skills-Learning/Text duplicate Skills and learning
A-TITLE Back to main menu
/skills-learningText duplicate Overview
/skills-learning/outreachOutreach
/skills-learning/pgiPostgraduate Institute
/careers/work-experienceText duplicate Work experience
https://training.npl.co.uk/External Subdomain Text duplicate Training
https://www.npl.co.uk/careersText duplicate Careers
/careers/apprenticeshipsText duplicate Apprenticeships
/sainsbury-management-fellowshipsSainsbury Management Fellows
/about-us/corporate-informatio...Text duplicate Strategic partners
https://www.npl.co.uk/contact/Text duplicate Contact us
/submit-feedback-or-product-ideasShare your feedback
https://www.npl.co.uk/find-us/Find us
https://www.npl.co.uk/measure-upSign up for NPL updates
https://www.npl.co.uk/Text duplicate Home
https://www.npl.co.uk/researchText duplicate Research
https://www.npl.co.uk/researchText duplicate Research
https://www.npl.co.uk/researchText duplicate Overview
https://www.npl.co.uk/biosciencesText duplicate Biosciences
https://www.npl.co.uk/researchBack to Research
A-TITLE Back to Research
https://www.npl.co.uk/biosciencesText duplicate Biosciences
/biometrologyText duplicate Biometrology
/mass-spectrometryText duplicate Mass spectrometry imaging
/surface-technologyText duplicate Surface technology
/chemical-analysisText duplicate Chemical analysis
https://www.npl.co.uk/researchText duplicate Back to Research
A-TITLE Back to Research
/chemical-analysisText duplicate Chemical analysis
/electrochemistryText duplicate Electrochemistry
/gas-particle-metrologyText duplicate Gas and particle metrology
/surface-technologyText duplicate Surface technology
/mass-spectrometryText duplicate Mass spectrometry
https://www.npl.co.uk/acousticsText duplicate Acoustics
https://www.npl.co.uk/researchText duplicate Back to Research
A-TITLE Back to Research
https://www.npl.co.uk/acousticsText duplicate Acoustics
https://www.npl.co.uk/ultrasoundText duplicate Ultrasound
/underwater-acousticsText duplicate Underwater acoustics
/communicationsText duplicate Communications
https://www.npl.co.uk/researchText duplicate Back to Research
A-TITLE Back to Research
/communicationsText duplicate Communications
/electromagneticsText duplicate Electromagnetics
/quantum-detectionText duplicate Quantum detection
/time-frequencyText duplicate Time and frequency
/data-scienceText duplicate Data science
https://www.npl.co.uk/engineeringText duplicate Engineering
https://www.npl.co.uk/researchText duplicate Back to Research
A-TITLE Back to Research
https://www.npl.co.uk/engineeringText duplicate Engineering
https://www.npl.co.uk/dimensionalText duplicate Dimensional metrology
/electrochemistryText duplicate Electrochemistry
/electronic-magnetic-materialsText duplicate Electronic and magnetic materials
/mass-mechanical-measurementText duplicate Mass and mechanical measurement
/temperature-and-humidityText duplicate Temperature and humidity
/environmental-monitoringText duplicate Environmental monitoring
https://www.npl.co.uk/researchText duplicate Back to Research
A-TITLE Back to Research
/environmental-monitoringText duplicate Environmental monitoring
/air-quality-aerosol-metrologyText duplicate Air quality and aerosol metrology
/earth-observationText duplicate Earth observation, climate and optical
/emissions-atmospheric-metrologyText duplicate Emissions and atmospheric metrology
/gas-particle-metrologyText duplicate Gas and particle metrology
/temperature-and-humidityText duplicate Temperature and humidity
/underwater-acousticsText duplicate Underwater acoustics
/ionising-radiationText duplicate Ionising radiation
https://www.npl.co.uk/researchText duplicate Back to Research
A-TITLE Back to Research
/ionising-radiationText duplicate Ionising radiation
/radiation-dosimetryText duplicate Radiation dosimetry
/nuclear-metrologyText duplicate Nuclear metrology
https://www.npl.co.uk/materialsText duplicate Materials
https://www.npl.co.uk/researchText duplicate Back to Research
A-TITLE Back to Research
https://www.npl.co.uk/materialsText duplicate Materials
/advanced-materialsText duplicate Advanced materials
https://www.npl.co.uk/dimensionalText duplicate Dimensional metrology
/electrochemistryText duplicate Electrochemistry
/electronic-magnetic-materialsText duplicate Electronic and magnetic materials
https://www.npl.co.uk/grapheneText duplicate Graphene
/surface-technologyText duplicate Surface technology
/medical-physicsText duplicate Medical physics
https://www.npl.co.uk/quantumText duplicate Quantum technologies
/time-frequencyText duplicate Time and frequency
/products-servicesText duplicate Products and services
/products-servicesText duplicate Products and services
/products-servicesText duplicate Products and services A to Z
https://www.npl.co.uk/consultancyText duplicate Consultancy
/products-services/calibrationText duplicate Calibration
https://training.npl.co.uk/External Subdomain Text duplicate Training
/products-services/instrumentsText duplicate Instruments
/products-services/commerciali...Text duplicate Commercialising technology
https://www.npl.co.uk/industries/Text duplicate Industries
https://www.npl.co.uk/industries/Text duplicate Industries
https://www.npl.co.uk/aerospaceText duplicate Aerospace
https://www.npl.co.uk/automotiveText duplicate Automotive
/defence-and-securityText duplicate Defence and security
https://www.npl.co.uk/energyText duplicate Energy and utilities
https://www.npl.co.uk/environmentText duplicate Environment
https://www.npl.co.uk/financeText duplicate Finance
/food-and-agritechText duplicate Food and agritech
/industries/healthcareText duplicate Healthcare
/industries/it-and-telecomsText duplicate IT and telecoms
/life-sciencesText duplicate Life sciences
/industries/manufacturingText duplicate Manufacturing
/industries/medical-devicesText duplicate Medical devices
/industries/oil-and-gasText duplicate Oil and gas
https://www.npl.co.uk/spaceText duplicate Space
/national-challenges/Text duplicate National challenges
/case-studiesText duplicate Case studies
/government/major-programmesText duplicate Major programmes
https://www.npl.co.uk/about-us/Text duplicate About us
https://www.npl.co.uk/about-us/Text duplicate About us
https://www.npl.co.uk/about-usText duplicate Overview
https://www.npl.co.uk/peopleText duplicate People
/about-us/national-metrology-i...Text duplicate National Metrology Institute
/about-us/diversity-and-inclusionText duplicate Diversity and inclusion
https://www.npl.co.uk/locationsText duplicate Locations
/about-us/who-we-work-withText duplicate Who we work with
/about-us/internationalText duplicate International reach
/about-us/corporate-informatio...Text duplicate Strategic partners
/about-us/historyText duplicate History
/about-us/corporate-informationText duplicate Corporate information
https://www.npl.co.uk/careers/Text duplicate Careers
https://www.npl.co.uk/careers/Text duplicate Careers
https://www.npl.co.uk/careersText duplicate Overview
/careers/current-vacanciesText duplicate Current vacancies
/careers/the-measure-of-usText duplicate The measure of us
/careers/apprenticeshipsText duplicate Apprenticeships
/careers/work-experienceText duplicate Work experience
/careers/early-careersText duplicate Early careers
https://www.npl.co.uk/Events/Text duplicate Events
/news-and-press-officeText duplicate News & Press Office
/resources/q-aText duplicate Questions and answers
https://www.npl.co.uk/Resources/Text duplicate Resources
https://www.npl.co.uk/Resources/Text duplicate Resources
https://www.npl.co.uk/resourcesText duplicate Overview
https://www.npl.co.uk/si-unitsText duplicate SI units
/resources/measure-of-our-successText duplicate Our impact: The Measure of our Success
/resources/questions-and-answersText duplicate Questions and answers
https://www.npl.co.uk/msf-signalText duplicate MSF signal
/resources/good-practice-guidesText duplicate Good practice guides
http://eprintspublications.npl...External Subdomain Text duplicate Publications repository
https://www.npl.co.uk/softwareText duplicate Software
/Skills-Learning/Text duplicate Skills and learning
/Skills-Learning/Text duplicate Skills and learning
/skills-learningText duplicate Overview
/skills-learning/outreachText duplicate Outreach
/skills-learning/pgiText duplicate Postgraduate Institute
/careers/work-experienceText duplicate Work experience
https://training.npl.co.uk/External Subdomain Text duplicate Training
https://www.npl.co.uk/careersText duplicate Careers
/careers/apprenticeshipsText duplicate Apprenticeships
/sainsbury-management-fellowshipsText duplicate Sainsbury Management Fellows
/about-us/corporate-informatio...Text duplicate Strategic partners
https://www.npl.co.uk/contact/Text duplicate Contact us
/submit-feedback-or-product-ideasText duplicate Share your feedback
https://www.npl.co.uk/find-us/Text duplicate Find us
https://www.npl.co.uk/measure-upText duplicate Sign up for NPL updates
/delivering-impactIMG-ALT Delivering impact
/delivering-impactText duplicate Delivering impact
/Celebrating-125-yearsStay up to date on latest news and events
/Campaigns/Measurement-for-bus...Check eligibility and apply now
/campaigns/measurement-for-qua...Explore our campaign
/products-servicesA-Z of our product and services
/Campaigns/UK-Telecoms-Lab/Learn more about UKTL
/products-services/advanced-ma...Download the ebook
/products-services/non-destruc...Text duplicate Download the ebook
https://www.npl.co.uk/about-usText duplicate About us
https://www.npl.co.uk/governmentWorking with government
https://www.npl.co.uk/researchText duplicate Research
/case-studiesText duplicate Case studies
/products-and-servicesText duplicate Products and services
https://www.npl.co.uk/eventsText duplicate Events
/national-challengesText duplicate National challenges
https://www.npl.co.uk/NewsNews and press
/improve-experience-on-our-web...Help us improve your experience on our website
/skills-learningText duplicate Skills and learning
/about-us/national-metrology-i...National metrology institute
/resources/q-aQuestion and answers
https://www.npl.co.uk/resourcesText duplicate Resources
https://www.npl.co.uk/contactText duplicate Contact us
https://www.npl.co.uk/contactMake a general enquiry
/privacy-noticePrivacy notice
/privacy-policy/cookiesCookies
https://www.npl.co.uk/qualityQuality
/health-safety-and-environmentHSE
https://www.npl.co.uk/ContactText duplicate Contact us
/terms-conditionsTerms
/anti-slavery-and-ethicsAnti-slavery and ethics
/accessibilityAccessibility
https://www.linkedin.com/compa...New window External Subdomain IMG-ALT LinkedIn
https://twitter.com/nplNew window External IMG-ALT Twitter
https://www.facebook.com/npldi...New window External Subdomain IMG-ALT Facebook
https://www.instagram.com/npld...New window External Subdomain IMG-ALT Instagram
https://www.youtube.com/user/N...New window External Subdomain IMG-ALT YouTube

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.npl.co.uk/"
HTTP header
(Important)
The web server version is sent within the HTTP header.
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 of 0.56 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.
The file size of the HTML document is fine (75 kB).

HTTP Response Header

NameValue
content-typetext/html; charset=utf-8
varyAccept-Encoding
strict-transport-securitymax-age=31536000; preload
referrer-policystrict-origin-when-cross-origin
access-control-allow-originhttps://www.npl.co.uk
x-content-type-optionsnosniff
x-permitted-cross-domain-policiesnone
x-xss-protection1; mode=block
expect-ctmax-age=0, enforce
permissions-policyaccelerometer=(), camera=(), geolocation=(), gyroscope=(), magnetometer=(), microphone=(), payment=(), usb=()
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dateSat, 26 Jul 2025 15:47:28 GMT
serverPAC 4.3.00.20190521
hostpac1-cor.hybridcloudspan.com
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External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 938 referring domains.
This page has 29,455 backlinks.
This page has backlinks from 737 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

User-agent: *
Disallow: /special-pages/
Disallow: /search

SITEMAP: https://www.npl.co.uk/sitemap.xml

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www.npl.co.uk
National Physical Laboratory - impact from science - NPL
National Physical Laboratory (NPL) is the UK’s National Metrology Institute, providing the measurement capability that underpins the UK’s prosperity and quality of life.

Most important keywords

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

KeywordResultRecheck
NPL72%Check
impact70%Check
National66%Check
science65%Check
National Physical Laboratory65%Check
measurement science59%Check
Physical58%Check
Laboratory58%Check
National Metrology58%Check
measurement54%Check
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