Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 45.60.11.203 |
| Server Software | nginx |
| CDN | CDN |
| Compression | gzip |
|
🔒 🟡 Mixed Content (1 HTTP resources) | The page is served over HTTPS but loads 1 resource(s) over HTTP. This may be blocked in modern browsers. |
|
🕐 🟡 Slow Response (1939 ms) | Response time exceeds 1 second. Consider optimizing the server or using caching. |
|
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 45.60.11.203
Server Software nginx
CDN CDN
Compression gzip
🔒 🟡 Mixed Content (1 HTTP resources) The page is served over HTTPS but loads 1 resource(s) over HTTP. This may be blocked in modern browsers.
🕐 🟡 Slow Response (1939 ms) Response time exceeds 1 second. Consider optimizing the server or using caching.
ℹ 🔵 Missing X-Frame-Options The site can be embedded in iframes by third parties (clickjacking risk).
Redirect Chain
| # | URL | HTTP Status Code | Status |
| 1 | https://heinemann.com:443 | 301 | HTTP/2 301 |
| 2 | https://www.heinemann.com/ | 200 | HTTP/2 200 |
#1 URL https://heinemann.com:443
HTTP Status Code 301
Status HTTP/2 301
#2 URL https://www.heinemann.com/
HTTP Status Code 200
Status HTTP/2 200
Performance
| DNS Lookup | 24.2 ms |
| TCP Connect | 33.9 ms |
| TLS Handshake | 13.6 ms |
| Time To First Byte (TTFB) | 1928.8 ms |
| Content Download | 9.8 ms |
| Total Response Time | 1938.7 ms |
DNS Lookup 24.2 ms
TCP Connect 33.9 ms
TLS Handshake 13.6 ms
Time To First Byte (TTFB) 1928.8 ms
Content Download 9.8 ms
Total Response Time 1938.7 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=15768000 |
| CSP | ✔ Configured |
| X-Frame-Options | ⚠ Not configured |
| X-Content-Type-Options | ⚠ Not configured |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=15768000
CSP ✔ Configured
X-Frame-Options ⚠ Not configured
X-Content-Type-Options ⚠ Not configured
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | Heinemann | Publisher of professional resources and provider of educational services for teachers |
| Meta Description | Heinemann is a publisher of professional resources and a provider of educational services for teachers and educators from kindergarten through college. |
| Open Graph Image | http://www.heinemann.com/shared/index_files/H-logo-fb.png |
Title Heinemann | Publisher of professional resources and provider of educational services for teachers Meta Description Heinemann is a publisher of professional resources and a provider of educational services for teachers and educators from kindergarten through college. Open Graph Image http://www.heinemann.com/shared/index_files/H-logo-fb.png Detected Technologies
| Technology | jQuery Google Analytics Google Tag Manager Cloudflare Nginx Node.js |
Technology jQuery Google Analytics Google Tag Manager Cloudflare Nginx Node.js
HTTP Headers
| Date
| Sat, 22 Aug 2026 09:29:54 GMT |
| Content-type
| text/html; charset=utf-8 |
| Server
| nginx |
| Vary
| Accept-Encoding |
| Cache-control
| private |
| X-aspnet-version
| 4.0.30319 |
| X-powered-by
| ASP.NET |
| Access-control-allow-origin
| * |
| Strict-transport-security
| max-age=15768000 |
| Content-security-policy
| upgrade-insecure-requests; |
| Content-encoding
| gzip |
| Set-cookie
| incap_ses_431_2118990=iU6ue+LOXgSWWdSofzj7BRFsiWoAAAAAqW/LvMioXdvhsyfHXGFzeg==; path=/; Domain=.heinemann.com; Secure; SameSite=None |
| X-cdn
| Imperva |
| X-iinfo
| 8-1662950-1662952 NNNN CT(103 209 0) RT(1787390992281 14) q(0 0 3 1) r(18 18) U5 |
Meta Tags
| X-UA-Compatible | IE=edge |
| Description | Heinemann is a publisher of professional resources and a provider of educational services for teachers and educators from kindergarten through college. |
| Keywords | heinemann, teaching, training, professional development, education, training, resources, services, books, seminars |
| Viewport | width=device-width, initial-scale=1 |
| Cache-control | no-cache, no-store, must-revalidate |
| Pragma | no-cache |
| Facebook-domain-verification | l5w8vb8v2gxaawjm08lrli4wnvtmna |
| Fb:pages | 96011276891 |
| Msapplication-TileColor | #2b5797 |
| Msapplication-TileImage |  |
| Theme-color | #ffffff |
Date Sat, 22 Aug 2026 09:29:54 GMT
Content-type text/html; charset=utf-8
Server nginx
Vary Accept-Encoding
Cache-control private
X-aspnet-version 4.0.30319
X-powered-by ASP.NET
Access-control-allow-origin *
Strict-transport-security max-age=15768000
Content-security-policy upgrade-insecure-requests;
Content-encoding gzip
Set-cookie incap_ses_431_2118990=iU6ue+LOXgSWWdSofzj7BRFsiWoAAAAAqW/LvMioXdvhsyfHXGFzeg==; path=/; Domain=.heinemann.com; Secure; SameSite=None
X-cdn Imperva
X-iinfo 8-1662950-1662952 NNNN CT(103 209 0) RT(1787390992281 14) q(0 0 3 1) r(18 18) U5
