Resultado de la comprobación para: pressbooks.com
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pressbooks.com está ONLINE
Información adicional para https://pressbooks.com
Información Técnica
| Código de estado HTTP | 200 |
| Versión HTTP | HTTP/1.1 |
| HTTPS | ✔ Disponible |
| Dirección IP | 13.249.228.71 |
| Software del servidor | nginx |
| CDN | CDN (Miss from cloudfront) |
| Compresión | gzip |
|
🕐 🟡 Respuesta lenta (1440 ms) | El tiempo de respuesta supera 1 segundo. Considera optimizar el servidor o usar caché. |
|
ℹ 🔵 Falta HSTS | No se ha configurado HTTP Strict Transport Security. Recomendado para sitios HTTPS. |
|
ℹ 🔵 Falta X-Frame-Options | El sitio puede ser incrustado en iframes por terceros (riesgo de clickjacking). |
Código de estado HTTP 200
Versión HTTP HTTP/1.1
HTTPS ✔ Disponible
Dirección IP 13.249.228.71
Software del servidor nginx
CDN CDN (Miss from cloudfront)
Compresión gzip
🕐 🟡 Respuesta lenta (1440 ms) El tiempo de respuesta supera 1 segundo. Considera optimizar el servidor o usar caché.
ℹ 🔵 Falta HSTS No se ha configurado HTTP Strict Transport Security. Recomendado para sitios HTTPS.
ℹ 🔵 Falta X-Frame-Options El sitio puede ser incrustado en iframes por terceros (riesgo de clickjacking).
Rendimiento
| Resolución DNS | 2 ms |
| Conexión TCP | 3.2 ms |
| Negociación TLS | 5.9 ms |
| Tiempo hasta el primer byte (TTFB) | 1436.8 ms |
| Descarga de contenido | 2.9 ms |
| Tiempo total de respuesta | 1439.6 ms |
Resolución DNS 2 ms
Conexión TCP 3.2 ms
Negociación TLS 5.9 ms
Tiempo hasta el primer byte (TTFB) 1436.8 ms
Descarga de contenido 2.9 ms
Tiempo total de respuesta 1439.6 ms
Seguridad
| HTTPS | ✔ Activado |
| HSTS | ✘ No configurado |
| CSP | ✔ Configurado |
| X-Frame-Options | ⚠ No configurado |
| X-Content-Type-Options | ✔ nosniff |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Activado
HSTS ✘ No configurado
CSP ✔ Configurado
X-Frame-Options ⚠ No configurado
X-Content-Type-Options ✔ nosniff
HTTP/2 ⚠ HTTP/1.1
Comprobación SEO
| Título | Pressbooks: The Leading Platform for Digital Publishing & OER |
| Meta descripción | Pressbooks empowers authors, educators and organizations to create, publish and share digital books and open educational resources (OER) |
| Canonical | https://pressbooks.com/ |
| Robots Meta | index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1 |
| Título Open Graph | Pressbooks: The Leading Platform for Digital Publishing & OER |
| Descripción Open Graph | Pressbooks empowers authors, educators and organizations to create, publish and share digital books and open educational resources (OER) opti |
| Imagen Open Graph | https://pressbooks.com/app/uploads/2023/03/Website-Illust... |
| Twitter Card | summary_large_image |
| Título Twitter | Pressbooks: The Leading Platform for Digital Publishing & OER |
| Descripción Twitter | Pressbooks empowers authors, educators and organizations to create, publish and share digital books and open educational resources (OER) opti |
| Imagen Twitter | https://pressbooks.com/app/uploads/2023/03/Website-Illust... |
Título Pressbooks: The Leading Platform for Digital Publishing & OER Meta descripción Pressbooks empowers authors, educators and organizations to create, publish and share digital books and open educational resources (OER) Canonical https://pressbooks.com/ Robots Meta index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1 Título Open Graph Pressbooks: The Leading Platform for Digital Publishing & OER Descripción Open Graph Pressbooks empowers authors, educators and organizations to create, publish and share digital books and open educational resources (OER) opti Imagen Open Graph https://pressbooks.com/app/uploads/2023/03/Website-Illust... Twitter Card summary_large_image Título Twitter Pressbooks: The Leading Platform for Digital Publishing & OER Descripción Twitter Pressbooks empowers authors, educators and organizations to create, publish and share digital books and open educational resources (OER) opti Imagen Twitter https://pressbooks.com/app/uploads/2023/03/Website-Illust... Tecnologías Detectadas
| Tecnología | WordPress Google Analytics Google Tag Manager Nginx PHP HubSpot |
Tecnología WordPress Google Analytics Google Tag Manager Nginx PHP HubSpot
Cabeceras HTTP
| Content-type
| text/html; charset=UTF-8 |
| Server
| nginx |
| Date
| Tue, 28 Jul 2026 16:56:47 GMT |
| X-content-type-options
| nosniff |
| Content-encoding
| gzip |
| Link
| ; rel=shortlink |
| X-tec-api-version
| v1 |
| X-tec-api-root
| https://pressbooks.com/wp-json/tribe/events/v1/ |
| X-tec-api-origin
| https://pressbooks.com |
| Server-timing
| wp-before-template;dur=355.25 |
| Content-security-policy
| frame-ancestors * |
| X-xss-protection
| 1; mode=block |
| Vary
| Accept-Encoding |
| X-cache
| Miss from cloudfront |
| Via
| 1.1 0fd6bf69faf9a940dcc6042ea0b65bee.cloudfront.net (CloudFront) |
| X-amz-cf-pop
| CDG50-P6 |
| X-amz-cf-id
| B7bEVzSV7QhshnXbWsffKVjvO6dKjvmDVxwVdCJhKTu8VPjJrPBmcg== |
Meta Tags
| Viewport | width=device-width, initial-scale=1, minimum-scale=1 |
| Robots | index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1 |
| Description | Pressbooks empowers authors, educators and organizations to create, publish and share digital books and open educational resources (OER) |
| Article:modified_time | 2025-07-30T17:15:41+00:00 |
| Google-site-verification | Xic4BeEq8h0LB68oSONR3G5SNEpN6DMUjgPTByr8Hd4 |
| Generator | performance-lab 3.9.0; plugins: |
| Tec-api-version | v1 |
| Tec-api-origin | https://pressbooks.com |
| Msapplication-TileImage |  |
Content-type text/html; charset=UTF-8
Server nginx
Date Tue, 28 Jul 2026 16:56:47 GMT
X-content-type-options nosniff
Content-encoding gzip
Link ; rel=shortlink
X-tec-api-version v1
X-tec-api-root https://pressbooks.com/wp-json/tribe/events/v1/
X-tec-api-origin https://pressbooks.com
Server-timing wp-before-template;dur=355.25
Content-security-policy frame-ancestors *
X-xss-protection 1; mode=block
Vary Accept-Encoding
X-cache Miss from cloudfront
Via 1.1 0fd6bf69faf9a940dcc6042ea0b65bee.cloudfront.net (CloudFront)
X-amz-cf-pop CDG50-P6
X-amz-cf-id B7bEVzSV7QhshnXbWsffKVjvO6dKjvmDVxwVdCJhKTu8VPjJrPBmcg==
Viewport width=device-width, initial-scale=1, minimum-scale=1 Robots index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1 Description Pressbooks empowers authors, educators and organizations to create, publish and share digital books and open educational resources (OER) Og:locale en_US Og:type website Og:title Pressbooks: The Leading Platform for Digital Publishing & OER Og:description Pressbooks empowers authors, educators and organizations to create, publish and share digital books and open educational resources (OER) opti Og:url https://pressbooks.com/ Og:site_name Pressbooks Article:modified_time 2025-07-30T17:15:41+00:00 Og:image 
Og:image:width 1687 Og:image:height 1219 Og:image:type image/png Twitter:card summary_large_image Twitter:title Pressbooks: The Leading Platform for Digital Publishing & OER Twitter:description Pressbooks empowers authors, educators and organizations to create, publish and share digital books and open educational resources (OER) opti Twitter:image Google-site-verification Xic4BeEq8h0LB68oSONR3G5SNEpN6DMUjgPTByr8Hd4 Generator performance-lab 3.9.0; plugins: Tec-api-version v1 Tec-api-origin https://pressbooks.com Msapplication-TileImage
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