hypertextbook.com - Secure (SSL)

Проверка результатов для: hypertextbook.com

hypertextbook.com ОНЛАЙН

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Дополнительная информация for https://hypertextbook.com

Technical Information

HTTP Status Code	200
HTTP Version	HTTP/1.1
HTTPS	✔ Available
IP Address	188.114.97.2
Server Software	cloudflare
CDN	Cloudflare
Compression	gzip
ℹ 🔵 Missing HSTS	HTTP Strict Transport Security is not configured. Recommended for HTTPS sites.
ℹ 🔵 Missing Content Security Policy	CSP is not configured. It helps prevent XSS attacks and content injection.
ℹ 🔵 Missing X-Frame-Options	The site can be embedded in iframes by third parties (clickjacking risk).

HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 188.114.97.2
Server Software cloudflare
CDN Cloudflare
Compression gzip
ℹ 🔵 Missing HSTS HTTP Strict Transport Security is not configured. Recommended for HTTPS sites.
ℹ 🔵 Missing Content Security Policy CSP is not configured. It helps prevent XSS attacks and content injection.
ℹ 🔵 Missing X-Frame-Options The site can be embedded in iframes by third parties (clickjacking risk).

Performance

DNS Lookup	18.3 ms
TCP Connect	20 ms
TLS Handshake	7.6 ms
Time To First Byte (TTFB)	374.4 ms
Content Download	70.9 ms
Total Response Time	445.2 ms

DNS Lookup 18.3 ms
TCP Connect 20 ms
TLS Handshake 7.6 ms
Time To First Byte (TTFB) 374.4 ms
Content Download 70.9 ms
Total Response Time 445.2 ms

Security

HTTPS	✔ Enabled
HSTS	✘ Not configured
CSP	⚠ Not configured
X-Frame-Options	⚠ Not configured
X-Content-Type-Options	⚠ Not configured
HTTP/2	⚠ HTTP/1.1

HTTPS ✔ Enabled
HSTS ✘ Not configured
CSP ⚠ Not configured
X-Frame-Options ⚠ Not configured
X-Content-Type-Options ⚠ Not configured
HTTP/2 ⚠ HTTP/1.1

SEO Quick Check

Title	hypertextbook
Meta Description	Free books to read and enjoy online. General interest hypertext-books and technical hyper-textbooks — physics, mathematics, cycling, education, media, skepticism, West Africa, and more.
Canonical	https://hypertextbook.com
Open Graph Title	hypertextbook
Open Graph Description	Free books to read and enjoy online. General interest hypertext-books and technical hyper-textbooks — physics, mathematics, cycling, education, media, skepticism, West Africa, and more.
Open Graph Image	https://hypertextbook.com/hypertextbook/og-image.jpg
Twitter Card	summary
Twitter Title	hypertextbook
Twitter Description	Free books to read and enjoy online. General interest hypertext-books and technical hyper-textbooks — physics, mathematics, cycling, education, media, skepticism, West Africa, and more.
Twitter Image	https://hypertextbook.com/hypertextbook/og-image.jpg

Title hypertextbook
Meta Description Free books to read and enjoy online. General interest hypertext-books and technical hyper-textbooks — physics, mathematics, cycling, education, media, skepticism, West Africa, and more.
Canonical https://hypertextbook.com
Open Graph Title hypertextbook
Open Graph Description Free books to read and enjoy online. General interest hypertext-books and technical hyper-textbooks — physics, mathematics, cycling, education, media, skepticism, West Africa, and more.
Open Graph Image https://hypertextbook.com/hypertextbook/og-image.jpg
Twitter Card summary
Twitter Title hypertextbook
Twitter Description Free books to read and enjoy online. General interest hypertext-books and technical hyper-textbooks — physics, mathematics, cycling, education, media, skepticism, West Africa, and more.
Twitter Image https://hypertextbook.com/hypertextbook/og-image.jpg

Detected Technologies

Technology	jQuery Google Analytics Google Tag Manager Cloudflare

Technology jQuery Google Analytics Google Tag Manager Cloudflare

HTTP Headers

Date	Fri, 21 Aug 2026 13:38:10 GMT
Content-type	text/html
Report-to	{"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=rLxo34Atx4hXzO62bjSlc%2BVr7zaCEkSCuECHO7ZiaWXGSwHEACyL1KGMLPhKX7vo3P808aFW3IJ8RDyg41LP4fxTzCyrz9mNHz9KRgqHeLdN5HfyLWt%2FcQ2TG%2BhRVdqrnk9Y6VqEGKxyJ0aHUmRPWw%3D%3D"}]}
Vary	Accept-Encoding
Server	cloudflare
Alt-svc	h3=":443"; ma=86400
X-turbo-charged-by	LiteSpeed
Cf-cache-status	DYNAMIC
Nel	{"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
Server-timing	cfEdge;dur=11,cfOrigin;dur=330
Content-encoding	gzip
Cf-ray	a2ea095f7c53b6e3-CDG

Meta Tags

Viewport	width=416
Author	Glenn Elert
Apple-mobile-web-app-title	hypertextbook
Application-name	hypertextbook
Msapplication-config	https://hypertextbook.com/hypertextbook/browserconfig.xml
Msapplication-TileColor	#001f3d
Theme-color	#ffffff
Description	Free books to read and enjoy online. General interest hypertext-books and technical hyper-textbooks — physics, mathematics, cycling, education, media, skepticism, West Africa, and more.

Date Fri, 21 Aug 2026 13:38:10 GMT
Content-type text/html
Report-to {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=rLxo34Atx4hXzO62bjSlc%2BVr7zaCEkSCuECHO7ZiaWXGSwHEACyL1KGMLPhKX7vo3P808aFW3IJ8RDyg41LP4fxTzCyrz9mNHz9KRgqHeLdN5HfyLWt%2FcQ2TG%2BhRVdqrnk9Y6VqEGKxyJ0aHUmRPWw%3D%3D"}]}
Vary Accept-Encoding
Server cloudflare
Alt-svc h3=":443"; ma=86400
X-turbo-charged-by LiteSpeed
Cf-cache-status DYNAMIC
Nel {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
Server-timing cfEdge;dur=11,cfOrigin;dur=330
Content-encoding gzip
Cf-ray a2ea095f7c53b6e3-CDG

Viewport width=416
Author Glenn Elert
Apple-mobile-web-app-title hypertextbook
Application-name hypertextbook
Msapplication-config https://hypertextbook.com/hypertextbook/browserconfig.xml
Msapplication-TileColor #001f3d
Theme-color #ffffff
Description Free books to read and enjoy online. General interest hypertext-books and technical hyper-textbooks — physics, mathematics, cycling, education, media, skepticism, West Africa, and more.
Og:type website
Og:site_name hypertextbook.com
Og:url https://hypertextbook.com
Og:title hypertextbook
Og:description Free books to read and enjoy online. General interest hypertext-books and technical hyper-textbooks — physics, mathematics, cycling, education, media, skepticism, West Africa, and more.
Og:image

Twitter:card summary
Twitter:site @hypertextbook
Twitter:creator @glennelert
Twitter:url https://hypertextbook.com
Twitter:title hypertextbook
Twitter:description Free books to read and enjoy online. General interest hypertext-books and technical hyper-textbooks — physics, mathematics, cycling, education, media, skepticism, West Africa, and more.
Twitter:image

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Проверка результатов для: hypertextbook.com

hypertextbook.com ОНЛАЙН

Дополнительная информация for https://hypertextbook.com

Technical Information

Performance

Security

SEO Quick Check

Detected Technologies

HTTP Headers

Meta Tags

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