Pll.harvard.edu - SEO Checker

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Visión general del análisis SEO
Metadatos
79% 
Calidad de la página
90% 
Estructura
68% 
Enlazado
60% 
Servidor
100% 
Factores externos
100% 
Puntuación SEO
Tiempo de carga
0,16 s
Tamaño HTML
109,50 kB
Palabras
658
Medios
29
Cantidad de enlaces
121 internos / 8 externos

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Metadatos

Título
(Extremadamente importante)
Professional and Lifelong Learning | Harvard University
La longitud del título es óptima (492 píxeles de una longitud máxima de 580 píxeles).
No se repite ninguna palabra en el título.
Meta descripción
(Extremadamente importante)
Explore professional and lifelong learning courses from Harvard University. From free online literature classes to in-person business courses for executives, there’s something for everyone. Earn certificates for professional development, receive college degree credit, or take a class just for fun! Advance your career. Pursue your passion. Keep learning.
La meta descripción es demasiado larga: 1000 píxelesOptimizar la descripción.
Rastreabilidad
(Extremadamente importante)
No se detectan problemas para acceder al sitio web.
Redirección canónica
(Importante)
https://pll.harvard.edu/
La página tiene una redirección canónica correcta.
Idioma
(Poco importante)
Idioma reconocido automáticamente en el contenido: en
Idioma declarado en el código HTML: en
Ubicación geográfica del servidor: Estados Unidos de América
El idioma ha sido correctamente declarado en el código HTML: en.
Enlaces Alternate/Hreflang
(Poco importante)
No se ha encontrado ningún enlace alternativo (alternate) en esta página.
Otras Metaetiquetas
(Poco importante)
No se detecta ninguna metaetiqueta de paginación rel next en la página.
No se detecta ninguna metaetiqueta de paginación rel prev en la página.
Dominio
(Poco importante)
Esta página está alojada en un subdominio. Para que la optimización de tu web en los buscadores tenga éxito, deberías utilizar tu propio dominio.
El dominio no contiene caracteres especiales.
URL de la página
(Poco importante)
No se detecta ningún parámetro dinámico en la URL.
No se detecta ningún ID de sesión en la URL.
La URL no contiene demasiados subdirectorios.
Codificación de caracteres
(Poco importante)
La codificación de caracteres (UTF-8) ha sido declarada correctamente.
Doctype
(Deseable)
La etiqueta doctype HTML 5 está configurada correctamente.
La declaración del doctype se ubica al inicio del código HTML.
Favicon
(Deseable)
El favicon está enlazado correctamente.

Metaetiquetas

NombreValor
descriptionExplore professional and lifelong learning courses from Harvard University. From free online literature classes to in-person business courses for executives, there’s something for everyone. Earn certificates for professional development, receive college degree credit, or take a class just for fun! Advance your career. Pursue your passion. Keep learning.
GeneratorDrupal 10 (https://www.drupal.org)
MobileOptimizedwidth
HandheldFriendlytrue
viewportwidth=device-width, initial-scale=1.0
langen
twitter:cardsummary
twitter:site@harvardonline
twitter:descriptionExplore professional and lifelong learning courses from Harvard University. From free online literature classes to in-person business courses for executives, there’s something for everyone. Earn certificates for professional development, receive college degree credit, or take a class just for fun! Advance your career. Pursue your passion. Keep learning.
twitter:titleHomepage
og:site_nameHarvard University
og:typewebsite
og:urlhttps://pll.harvard.edu/homepage
og:titleHomepage | Harvard University
og:descriptionExplore professional and lifelong learning courses from Harvard University. From free online literature classes to in-person business courses for executives, there’s something for everyone. Earn certificates for professional development, receive college degree credit, or take a class just for fun! Advance your career. Pursue your passion. Keep learning.
ImageToolbarfalse
charsetutf-8

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Calidad de la página

Contenido
(Extremadamente importante)
El número total de palabras en la página es bueno: 658 palabras.
Un 22.3% del contenido está constituido por palabras vacías.
Las palabras clave del título también se repiten en el texto del cuerpo.
Las palabras del encabezado H1 también aparecen en el cuerpo del texto.
La página contiene un listado, lo que indica una buena estructuración del contenido.
Se han encontrado 9 párrafos en esta página.
El contenido en formato texto de esta página es óptimo.
No se detecta ningún placeholder de texto ni imagen.
No se detecta contenido duplicado.
La cantidad media de palabras por frase es buena: 20.4 palabras.
Frames
(Extremadamente importante)
Esta página no utiliza ningún frameset.
Optimización para móviles
(Poco importante)
No se ha especificado ningún icono de Apple Touch.
El valor de la etiqueta viewport es correcto: (width=device-width, initial-scale=1.0).
Etiquetas Bold y Strong
(Poco importante)
El uso de etiquetas de negritas en esta página es óptimo. Te recomendamos emplear hasta 13 etiquetas de negritas en una página.
Optimización de imágenes
(Poco importante)
La descripción del atributo ALT se utiliza correctamente en todas las imágenes rastreadas.
Redes Sociales
(Deseable)
Esta página apenas ofrece posibilidades de compartir el contenido en redes sociales. Con la integración de widgets puedes conseguir que tus contenidos se popularicen en redes.
Etiquetas markup adicionales
(Deseable)
No se detecta ninguna etiqueta markup (de Schema.org) adicional.
HTTPS
(Poco importante)
El sitio utiliza HTTPS para transferir datos de forma segura.
Todos los archivos incluidos se transfieren a través de HTTPS.

Lista de medios

URLAtributo ALTTítulo
/themes/custom/twel_scholar/logo.svgHarvard University logo
.../oibw-pll-course-image.png?itok=rKGFoTeXPhoto of Professor Banaji filming for her course Outsmarting Implicit Bias in a film studio.
...06/TMHC_pll-site_image.png?itok=JCzzdd05Woman in scrubs pointing to screen with medical results while two other medical professional look on
...an-traveler-crossroa_1.jpg?itok=tK6MH8bEPerson standing outdoors looking at a map in the woods.
...rse/GSE2x for EdPortal.jpg?itok=5pbqBf_zOrange wall with pink block letters that say For a Better Education
...blic/course/CS50AI_pll.png?itok=xPwrFW6ACS50AI
...ublic/course/CS50P_pll.png?itok=YoOeOqcSCS50P
...public/course/einstein.png?itok=byU2mhZbheadshot of Albert Einstein, smiling slightly, appears to be wearing a suit or at least collared shirt
...um/public/course/e2e 2.png?itok=07aHyTmbvan de graaff generator
...18-07-16 at 3.16.24 PM.png?itok=SAk2xuGXBell curve with course name below and small cartoon figure wearing skis on top of curve.
...yImages-810564474017_6.JPG?itok=Pc6C9BZTHuman brain illustation.
...s-nonprofit-management.jpg?itok=O1FFnh3DProfessor Rangan teaching executives in a HBS classroom
...Images-157315276014_12.JPG?itok=xAV-2vi_Internal medicine icon.
.../logo/harvard-business.png?itok=9qHqPu7yHarvard Business School
.../logo/harvard-divinity.png?itok=xFBhBN_qHarvard Divinity School
...ools/logo/EXT_centered.png?itok=sN63ACGlHarvard Extension School
...ls/logo/harvard-health.png?itok=qU5ggV1jHarvard T.H. Chan School of Public Health
...s/logo/harvard-kennedy.png?itok=39BwrHNAHarvard Kennedy School
...s/logo/HLS_shield_2021.png?itok=BIoqltl1Harvard Law School
...ols/logo/harvard-fac_0.png?itok=MpEKFIyYHarvard Faculty of Arts & Sciences
...go/harvard-engineering.png?itok=KniJ3c_cHarvard School of Engineering and Applied Sciences
...ls/logo/harvard-design.png?itok=S42YquskHarvard Graduate School of Design
...ools/logo/harvard-gedu.png?itok=lkqAy0pgHarvard Graduate School of Education
...s/logo/harvard-medical.png?itok=IbibkvQ3Harvard Medical School
...logo/harvard-fac_0_0_1.png?itok=6TUIzTvZHarvard Summer School
...s/logo/harvard-fac_0_0.png?itok=-9w58KB3Harvard Division of Continuing Education
...logo/harvard-fac_0_0_0.png?itok=LtSxY6u0Professional & Executive Development
.../harvard-dental-school.png?itok=_rMLdtisHarvard School of Dental Medicine Logo
...custom/twel_scholar/images/vpal-logo.svgVPAL Logo

Estructura de la página

Encabezado H1
(Extremadamente importante)
Professional and Lifelong Learning
El encabezado H1 es óptimo.
Encabezados
(Importante)
Hay 40 encabezados H en esta página. La cantidad de encabezados debería guardar una mejor proporción en relación al texto.

Estructura de los encabezados

Jerarquía de encabezadosContenido
H1 Professional and Lifelong Learning
H2 Browse by Subject Area
H2 In-person, blended, and online courses
H2 Featured
H2 Subject Areas
H2 Trending Courses
H2 Featured topics
H2 Join our list to learn more
H2 Recently added
H2 Starting soon
H2 Schools
H2 Keep learning.
H2 Footer Links
H3 Outsmarting Implicit Bias
H3 Innovations in Teamwork for Health Care
H3 Managing Happiness
H3 Leaders of Learning
H3 CS50's Introduction to Artificial Intelligence with Python
H3 CS50's Introduction to Programming with Python
H3 The Einstein Revolution
H3 Energy to Electrochemistry Final Exam
H3 Introduction to Probability (on edX)
H3 Update in Neuro-Oncology
H3 Strategic Perspectives in Nonprofit Management
H3 Intensive Review of Internal Medicine
H3 Harvard Business School
H3 Harvard Divinity School
H3 Harvard Extension School
H3 Harvard T.H. Chan School of Public Health
H3 Harvard Kennedy School
H3 Harvard Law School
H3 Harvard Faculty of Arts & Sciences
H3 Harvard School of Engineering and Applied Sciences
H3 Harvard Graduate School of Design
H3 Harvard Graduate School of Education
H3 Harvard Medical School
H3 Harvard Summer School
H3 Harvard Division of Continuing Education
H3 Professional & Executive Development
H3 Harvard School of Dental Medicine
Algunos enlaces internos contienen parámetros dinámicos. Las URL internas no deberían contener parámetros dinámicos, salvo que estén marcadas como nofollow.
Algunos textos ancla se repiten más de una vez en varios enlaces.
La cantidad de enlaces internos es adecuada.
Ningún texto ancla es excesivamente largo.
Hay 8 enlaces externos en esta página.

Enlaces detectados en esta página

EnlacePropiedadesTexto ancla
https://pll.harvard.edu/Texto ancla Skip to main content
https://pll.harvard.edu/Professional and Lifelong Learning | Harvard University
IMG-ALT Harvard University logo
A-TITLE Professional and Lifelong Learning | Harvard University
/subject/art-designArt & Design
/subject/businessBusiness
/subject/computer-scienceComputer Science
/subject/data-scienceData Science
/subject/education-teachingEducation & Teaching
/subject/health-medicineHealth & Medicine
/subject/humanitiesHumanities
/subject/mathematicsMathematics
/subject/programmingProgramming
/subject/scienceScience
/subject/social-sciencesSocial Sciences
/subject/theologyTheology
https://pll.harvard.edu/catalogAll courses
/catalog?max_price&start_date&...Online Courses
/catalog?price[1]=1Free Courses
/course/outsmarting-implicit-biasIMG-ALT Photo of Professor Banaji filming for her course Outsmarting Implicit Bias in a film studio.
/subject/social-sciencesTexto duplicado Social Sciences
/course/outsmarting-implicit-biasOutsmarting Implicit Bias
/course/innovations-teamwork-h...IMG-ALT Woman in scrubs pointing to screen with medical results while two other medical professional look on
/subject/businessTexto duplicado Business
/course/innovations-teamwork-h...Innovations in Teamwork for Health Care
/course/managing-happinessIMG-ALT Person standing outdoors looking at a map in the woods.
/subject/businessTexto duplicado Business
/course/managing-happinessManaging Happiness
/subject/art-designTexto duplicado Art & Design
/subject/businessTexto duplicado Business
/subject/computer-scienceTexto duplicado Computer Science
/subject/data-scienceTexto duplicado Data Science
/subject/education-teachingTexto duplicado Education & Teaching
/subject/health-medicineTexto duplicado Health & Medicine
/subject/humanitiesTexto duplicado Humanities
/subject/mathematicsTexto duplicado Mathematics
/subject/programmingTexto duplicado Programming
/subject/scienceTexto duplicado Science
/subject/social-sciencesTexto duplicado Social Sciences
/subject/theologyTexto duplicado Theology
https://pll.harvard.edu/catalogView all courses
/course/leaders-learningIMG-ALT Orange wall with pink block letters that say For a Better Education
/subject/education-teachingTexto duplicado Education & Teaching
/course/leaders-learningLeaders of Learning
/course/cs50s-introduction-art...IMG-ALT CS50AI
/subject/computer-scienceTexto duplicado Computer Science
/course/cs50s-introduction-art...CS50's Introduction to Artificial Intelligence with Python
/course/cs50s-introduction-pro...IMG-ALT CS50P
/subject/programmingTexto duplicado Programming
/course/cs50s-introduction-pro...CS50's Introduction to Programming with Python
https://pll.harvard.edu/trendingView all trending
/subject/data-science-0Texto duplicado Data Science
/subject/financeFinance
/subject/self-improvementSelf-Improvement
/subject/social-sciencesTexto duplicado Social Sciences
/subject/public-global-healthPublic & Global Health
/subject/public-healthPublic Health
/subject/leadershipLeadership
/subject/data-science-toolsData Science Tools
/subject/data-visualizationData Visualization
/subject/business-developmentBusiness Development
/subject/medicineMedicine
/subject/healthHealth
/subject/healthcareHealthcare
https://pll.harvard.edu/subject/rR
/subject/professional-developmentProfessional Development
/subject/professional-developm...Texto duplicado Professional Development
/subject/entrepreneurshipEntrepreneurship
/subject/finance-0Texto duplicado Finance
/subject/social-scienceSocial Science
/subject/generalGeneral
/course/einstein-revolutionIMG-ALT headshot of Albert Einstein, smiling slightly, appears to be wearing a suit or at least collared shirt
/subject/humanitiesTexto duplicado Humanities
/course/einstein-revolutionThe Einstein Revolution
/course/energy-electrochemistr...IMG-ALT van de graaff generator
/subject/scienceTexto duplicado Science
/course/energy-electrochemistr...Energy to Electrochemistry Final Exam
/course/introduction-probabili...IMG-ALT Bell curve with course name below and small cartoon figure wearing skis on top of curve.
/subject/mathematicsTexto duplicado Mathematics
/course/introduction-probabili...Introduction to Probability (on edX)
https://pll.harvard.edu/recentView all recently added
/course/update-neuro-oncologyIMG-ALT Human brain illustation.
/subject/health-medicineTexto duplicado Health & Medicine
/course/update-neuro-oncologyUpdate in Neuro-Oncology
/course/strategic-perspectives...IMG-ALT Professor Rangan teaching executives in a HBS classroom
/subject/businessTexto duplicado Business
/course/strategic-perspectives...Strategic Perspectives in Nonprofit Management
/course/intensive-review-inter...IMG-ALT Internal medicine icon.
/subject/health-medicineTexto duplicado Health & Medicine
/course/intensive-review-inter...Intensive Review of Internal Medicine
/starting-soonView all starting soon
/school/harvard-business-schoolIMG-ALT Harvard Business School
/school/harvard-business-schoolTexto duplicado Harvard Business School
/school/harvard-divinity-schoolIMG-ALT Harvard Divinity School
/school/harvard-divinity-schoolTexto duplicado Harvard Divinity School
/school/harvard-extension-schoolIMG-ALT Harvard Extension School
/school/harvard-extension-schoolTexto duplicado Harvard Extension School
/school/harvard-th-chan-school...IMG-ALT Harvard T.H. Chan School of Public Health
/school/harvard-th-chan-school...Texto duplicado Harvard T.H. Chan School of Public Health
/school/harvard-kennedy-schoolIMG-ALT Harvard Kennedy School
/school/harvard-kennedy-schoolTexto duplicado Harvard Kennedy School
/school/harvard-law-schoolIMG-ALT Harvard Law School
/school/harvard-law-schoolTexto duplicado Harvard Law School
/school/harvard-faculty-arts-s...IMG-ALT Harvard Faculty of Arts & Sciences
/school/harvard-faculty-arts-s...Texto duplicado Harvard Faculty of Arts & Sciences
/school/harvard-school-enginee...IMG-ALT Harvard School of Engineering and Applied Sciences
/school/harvard-school-enginee...Texto duplicado Harvard School of Engineering and Applied Sciences
/school/harvard-graduate-schoo...IMG-ALT Harvard Graduate School of Design
/school/harvard-graduate-schoo...Texto duplicado Harvard Graduate School of Design
/school/harvard-graduate-schoo...IMG-ALT Harvard Graduate School of Education
/school/harvard-graduate-schoo...Texto duplicado Harvard Graduate School of Education
/school/harvard-medical-schoolIMG-ALT Harvard Medical School
/school/harvard-medical-schoolTexto duplicado Harvard Medical School
/school/harvard-summer-schoolIMG-ALT Harvard Summer School
/school/harvard-summer-schoolTexto duplicado Harvard Summer School
/school/harvard-division-conti...IMG-ALT Harvard Division of Continuing Education
/school/harvard-division-conti...Texto duplicado Harvard Division of Continuing Education
/school/professional-executive...IMG-ALT Professional & Executive Development
/school/professional-executive...Texto duplicado Professional & Executive Development
/school/harvard-school-dental-...IMG-ALT Harvard School of Dental Medicine Logo
/school/harvard-school-dental-...Harvard School of Dental Medicine
https://pll.harvard.edu/catalogView All Courses
https://community.alumni.harva...Nueva ventana Externo Subdominio Donate
http://accessibility.harvard.edu/Nueva ventana Externo Subdominio Accessibility
https://www.harvard.edu/privac...Nueva ventana Externo Subdominio Privacy Policy
https://pll.harvard.edu/terms-useTerms of Use
https://internationaldatapriva...Nueva ventana Externo Subdominio EEA Privacy Disclosures
https://www.flickr.com/photos/...Nueva ventana Externo Subdominio Harvard Gates, Fall #2
https://www.flickr.com/photos/...Nueva ventana Externo Subdominio Tim Sackton
https://creativecommons.org/li...Nueva ventana Externo CC BY-SA 2.0
https://vpal.harvard.edu/Nueva ventana Externo Subdominio IMG-ALT VPAL Logo

Configuración del servidor

Redirecciones HTTP
(Extremadamente importante)
Esta página redirige a "https://pll.harvard.edu/".
Cabecera HTTP
(Importante)
La cabecera X-Powered-by no se envía en la cabecera de la página.
El servidor web transmite la página web (HTML) comprimida.
Rendimiento
(Poco importante)
El tiempo de respuesta de la página HTML es excelente: 0,16 segundos, y se sitúa por debajo de los 0,40 segundos.
El tamaño HTML de la página es adecuado: 110 kB.

Cabecera HTTP

NombreValor
cache-controlmax-age=86400, public
content-encodinggzip
content-languageen
content-typetext/html; charset=UTF-8
etagW/"1753251567"
expiresSun, 19 Nov 1978 05:00:00 GMT
last-modifiedWed, 23 Jul 2025 06:19:27 GMT
servernginx
strict-transport-securitymax-age=300
x-content-type-optionsnosniff
x-drupal-cacheMISS
x-drupal-dynamic-cacheUNCACHEABLE (poor cacheability)
x-frame-optionsSAMEORIGIN
x-generatorDrupal 10 (https://www.drupal.org)
x-pantheon-styx-hostnamestyx-fe2-a-7d5b69868b-qp7vc
x-styx-req-idfc5992b8-678c-11f0-b8e5-22495f94d67d
dateWed, 23 Jul 2025 10:46:49 GMT
x-served-bycache-chi-kigq8000111-CHI, cache-fra-eddf8230122-FRA
x-cacheHIT, HIT
x-cache-hits3, 1
x-timerS1753267610.927570,VS0,VE5
varyAccept-Encoding, Cookie, Cookie, Cookie
age16041
accept-rangesbytes
via1.1 varnish, 1.1 varnish
content-length20477
statuscode200
http_versionHTTP/2

Factores externos

Wikipedia enlaza esta página en sus fuentes.
Esta página recibe enlaces de calidad de otros sitios web.
Esta página recibe backlinks de 396 dominios de referencia.
Esta página recibe un total de 14.866 backlinks.
Esta página recibe backlinks de 280 direcciones IP distintas.

Backlinks desde Wikipedia

Descubre más links en la función de búsqueda de Wikipedia

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: /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/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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Snippet (vista previa de los resultados de búsqueda)

pll.harvard.edu
Professional and Lifelong Learning | Harvard University
Explore professional and lifelong learning courses from Harvard University. From free online literature classes to in-person business courses for executives, there’s something for everyone. Earn certificates for professional development, receive college degree credit, or take a class just for fun! Advance your career. Pursue your passion. Keep learning.

Palabras clave más importantes

Se han encontrado las siguientes palabras clave. Comprueba si esta página está bien optimizada para cada palabra clave en concreto.

Palabra claveResultadoComprobar
Learn82%Check
Professional79%Check
Learning77%Check
Lifelong Learning77%Check
long73%Check
Harvard72%Check
Professional Development67%Check
Harvard University66%Check
Harvard Business60%Check
courses59%Check
Mostrar más palabras clave

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