hypertextbook.com
hypertextbook
Last scanned Aug 5, 2026, 1:00 AM · 10 views
Overall score
Excellent
Summary
Free books to read and enjoy online. This website uses Google Analytics hosted on Cloudflare behind Cloudflare CDN. SEO is excellent (95/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.
hypertextbook
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.
- United States
- Hosted on Cloudflare
Top issues to fix
5 issues found · 2 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
SEO
1 issue(s) found
Performance
481 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
0 overall since Jul 27, 2026
- Overall
- 90
- SEO
- 95
- Security
- 65
- Performance
- 100
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
hypertextbook
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.
Meta tags
- Title
- hypertextbook
- 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
- Language
- en
- Charset
- utf-8
- Viewport
- width=416
- Robots meta
- Manifest
- https://hypertextbook.com/hypertextbook/site.webmanifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 172.67.136.155
- ASN
- AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Google Trust Services
- Subject
- hypertextbook.com
- Valid from
- Aug 4, 2026
- Valid to
- Nov 2, 2026
- Days until expiry
- 89
- SAN domains
- hypertextbook.com, *.hypertextbook.com
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 0 · H3 0
Links
9 internal · 3 external · 0 broken
Images
3 total · 0 missing alt
Scripts / Styles
11 scripts · 3 stylesheets
JS / CSS size
660 KB · 68.5 KB
Page size
26.0 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 31
- sitemap.xml
- Found
- URLs in sitemap
- 710
SEO issues
- Meta description longer than 160 characters
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://hypertextbook.com
- Final URL
- https://hypertextbook.com
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 481 ms
- HTML size
- 26.0 KB
- Redirect chain
- https://hypertextbook.com
See something wrong on this report? Request a correction
Related websites
Same technology stack
aziendeitalia.com
Server Dedicati, VPS, Hosting per WordPress, Cloud Server
cutshort.io
Cutshort: Making Top Professionals More Successful.
activtrak.com
ActivTrak Work Intelligence for Productivity Optimization
atlan.com
Atlan - The Context Layer for AI
biorbyt.com
Antibodies, Proteins & Life Science Reagents | Biorbyt
datcom.com.au
Datcom Cloud: Managed IT & Cybersecurity Services Sydney
Same hosting provider
karinderya.org
Karinderya Wiki & Guides — Codes, Workers & Updates
logiclinkrepair.com
Logic Link Repair | PC, Mac & Phone Repair in Kalispell, MT
herodash.ai
AI Customer Service Platform for Global Teams | HeroDash
emplifyhealth.org
Emplify Health | A Little Empathy Changes Everything
nudeclap.com
Naked Girls Porn: Free HD Nude Sex Videos
rbj.net
Rochester Business Journal
Frequently asked questions
- What technology does hypertextbook.com use?
- hypertextbook.com is built with Google Analytics, Cloudflare Analytics.
- Is hypertextbook.com secure (HTTPS)?
- Yes. hypertextbook.com uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Nov 2, 2026.
- Who hosts hypertextbook.com?
- hypertextbook.com is hosted on Cloudflare, behind Cloudflare CDN.
- What is hypertextbook.com's SEO score?
- hypertextbook.com scored 95/100 for SEO in the latest analysis (excellent).
- What is hypertextbook.com's overall website score?
- hypertextbook.com has an overall SiteGraph score of 90/100, combining SEO, performance, security, and accessibility.
- What company operates hypertextbook.com?
- hypertextbook.com is operated by hypertextbook. 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.
- Has hypertextbook.com's score changed over time?
- hypertextbook.com's overall score has stayed steady at 90/100 since Jul 27, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card