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Metadatos
95% 
Calidad de la página
83% 
Estructura
29% 
Enlazado
38% 
Servidor
0% 
Factores externos
100% 
Puntuación SEO
Tiempo de carga
0,73 s
Tamaño HTML
207,20 kB
Palabras
1561
Medios
35
Cantidad de enlaces
137 internos / 101 externos

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Metadatos

Título
(Extremadamente importante)
The National Academies Press
La longitud del título es óptima (276 píxeles de una longitud máxima de 580 píxeles).
No se repite ninguna palabra en el título.
Meta descripción
(Extremadamente importante)
The National Academies Press (NAP) publishes authoritative reports issued by The National Academies of Science, Engineering, and Medicine (NASEM).
La longitud de la meta descripción es óptima (947 píxeles de una longitud máxima de 1000 píxeles).
Rastreabilidad
(Extremadamente importante)
No se detectan problemas para acceder al sitio web.
Redirección canónica
(Importante)
https://nap.nationalacademies.org/
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
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No se ha encontrado ningún enlace alternativo (alternate) en esta página.
Otras Metaetiquetas
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No se detecta ninguna metaetiqueta de paginación rel next en la página.
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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
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La etiqueta doctype HTML 5 está configurada correctamente.
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Metaetiquetas

NombreValor
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descriptionThe National Academies Press (NAP) publishes authoritative reports issued by The National Academies of Science, Engineering, and Medicine (NASEM).
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Calidad de la página

Contenido
(Extremadamente importante)
El número total de palabras en la página es bueno: 1561 palabras.
Un 31.6% 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 16 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: 23.94 palabras.
Frames
(Extremadamente importante)
Esta página no utiliza ningún frameset.
Optimización para móviles
(Poco importante)
No se ha especificado ningún icono de Apple Touch.
Esta página carga 12 archivos JavaScript. Esto puede afectar negativamente a la velocidad de carga.
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 31 etiquetas de negritas en una página.
Optimización de imágenes
(Poco importante)
No se detecta ninguna descripción del atributo ALT en 2 imágenes. El contenido de los atributos ALT también es evaluado como texto por los buscadores y es muy importante para la búsqueda de imágenes.
Redes Sociales
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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
...elToken=d2dc71410b56f1d61406108f1738d0f4Carece de atributo ALT
...elToken=d2dc71410b56f1d61406108f1738d0f4Carece de atributo ALT
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/cover/13165/200Cover Image: A Framework for K-12 Science Education
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/cover/26967/200Cover Image: Report of the Materials Advisory Board Ad Hoc Panel on the Manufacture of Advanced Electronic Components.
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/images/video_thumbs/mm-18373.jpgVideo: Abrupt Impacts of Climate Change
/images/video_thumbs/mm-12192.jpgVideo: On Being a Scientist
/images/video_thumbs/mm-immigrants-vis.pngInfographic: Ten Things You Probably Didn't Know About Immigrants
/images/video_thumbs/mm-23482.jpgVideo: Bullying: Through a Teacher's Eyes
/images/icon_academyscope.pngBrowse titles in AcademyScope
/images/footer-nap-text.pngNational Academies Press: Washington, DC | Home
data:[...] Base64NAS Logo
data:[...] Base64NAE Logo
data:[...] Base64NAM Logo

Estructura de la página

Encabezado H1
(Extremadamente importante)
National Academies Press
Más de un encabezado H1.
Encabezados
(Importante)
Algunos de los encabezados H se repiten dos veces.
En la estructura de los encabezados H faltan uno o varios niveles.
Hay 47 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 National Academies Press
H1 Emergency Preparedness Collection
H1 Climate Change Collection
H1 Quantum Information Science Collection
H2 Featured Titles
H2 New Releases more
H2 Most Downloaded (last 7 days) more
H2 From the Archives
H2 Searchable Collections more
H2 Featured Multimedia
H3 ×BROWSE BY TOPIC
H4 Social Media and Adolescent Health
H4 The Next Decade of Discovery in Solar and Space Physics: Exploring and Safeguarding Humanity's Home in Space
H4 Preventing and Treating Dementia: Research Priorities to Accelerate Progress
H4 K-12 STEM Education and Workforce Development in Rural Areas
H4 Modernizing Probable Maximum Precipitation Estimation
H4 Women's Empowerment, Population Dynamics, and Socioeconomic Development
H4 Exploring the Changing Diversity, Equity, and Inclusion Legislation and Policy Landscape and Its Impact on Health and Public Health's Workforce, Education, Training, and Research: Proceedings of a ...
H4 Identifying Midlife Social Exposures That Might Modify Risks of Cognitive Impairment Associated with Early Life Disadvantage: Proceedings of a Workshop
H4 Advancing Vineyard Health: Insights and Innovations for Combating Grapevine Red Blotch and Leafroll Diseases
H4 Geospatial Data Governance Policies and Procedures: A Guide
H4 Social Isolation and Loneliness in Older Adults: Opportunities for the Health Care System
H4 Promising Practices for Addressing the Underrepresentation of Women in Science, Engineering, and Medicine: Opening Doors
H4 Leading Health Indicators 2030: Advancing Health, Equity, and Well-Being
H4 A Framework for K-12 Science Education: Practices, Crosscutting Concepts, and Core Ideas
H4 The Future of Nursing: Leading Change, Advancing Health
H4 Report of the Materials Advisory Board Ad Hoc Panel on the Manufacture of Advanced Electronic Components.
H4 A Survey of Transplantable and Transmissible Animal Tumors
H4 Resident Research Associateships: Postdoctoral and Senior Research Awards
H4 Research Concerning Metrology and Fundamental Constants
H4 Polychlorinated biphenyls: a case study by Edward J. Burger
H4 Crisis Standards of Care
H4 Cybersecurity
H4 Emergency Preparedness / Disaster Management
H4 Genomics
H4 Climate Change
H6 Video
H6 Video Texto duplicado
H6 Video Texto duplicado
H6 Infographic
H6 Video Texto duplicado
H6 NAP Quick Links
H6 Request A
H6 Browse Publications
H6 NAP Ordering
H6 Using NAP.edu
H6 NAP Information
Algunos textos ancla son demasiado largos.
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.
Hay 3 links con un texto ancla que no es suficientemente relevante.
La cantidad de enlaces internos es adecuada.
Hay demasiados enlaces externos (101) en esta página.

Enlaces detectados en esta página

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https://www.nationalacademies....Externo Subdominio Texto duplicado Diversity, Equity, and Inclusion
https://www.nationalacademies....Externo Subdominio Texto duplicado Climate
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A-TITLE Learn More
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https://www.nationalacademies....Externo Subdominio Texto duplicado Careers
https://www.nationalacademies....Externo Subdominio Texto duplicado Fellowships and Grants
https://www.nationalacademies....Externo Subdominio Texto duplicado Volunteers
https://www.nationalacademies....Externo Subdominio Texto duplicado Sponsors
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A-TITLE Learn More
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https://www.nap.edu/collection...Externo Subdominio Texto duplicado Learn more
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/Texto ancla Sin texto
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IMG-ALT Cover Image: The Next Decade of Discovery in Solar and Space Physics
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http://www.nap.edu/catalog.php...Externo Subdominio Texto ancla IMG-ALT Video: Confronting Commercial Sexual Exploitation and Sex Trafficking of Minors in the United States
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