Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 18.244.28.41 |
| Server Software | nginx |
| CDN | CDN (Miss from cloudfront) |
| Compression | gzip |
|
ℹ 🔵 Missing Content Security Policy | CSP is not configured. It helps prevent XSS attacks and content injection. |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 18.244.28.41
Server Software nginx
CDN CDN (Miss from cloudfront)
Compression gzip
ℹ 🔵 Missing Content Security Policy CSP is not configured. It helps prevent XSS attacks and content injection.
Redirect Chain
| # | URL | HTTP Status Code | Status |
| 1 | https://www.concrete5.org:443 | 301 | HTTP/2 301 |
| 2 | https://www.concretecms.com/ | 200 | HTTP/2 200 |
#1 URL https://www.concrete5.org:443
HTTP Status Code 301
Status HTTP/2 301
#2 URL https://www.concretecms.com/
HTTP Status Code 200
Status HTTP/2 200
Performance
| DNS Lookup | 17.6 ms |
| TCP Connect | 18.8 ms |
| TLS Handshake | 5.9 ms |
| Time To First Byte (TTFB) | 330.7 ms |
| Content Download | 0.3 ms |
| Total Response Time | 331 ms |
DNS Lookup 17.6 ms
TCP Connect 18.8 ms
TLS Handshake 5.9 ms
Time To First Byte (TTFB) 330.7 ms
Content Download 0.3 ms
Total Response Time 331 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=31536000 |
| CSP | ⚠ Not configured |
| X-Frame-Options | ✔ sameorigin |
| X-Content-Type-Options | ✔ nosniff |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=31536000
CSP ⚠ Not configured
X-Frame-Options ✔ sameorigin
X-Content-Type-Options ✔ nosniff
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | Concrete CMS is a Free and Open Source Content Management System for Teams |
| Meta Description | Concrete CMS is an open source content management system for teams. A website builder with built in tools make editing content easy. |
| Canonical | https://www.concretecms.com/ |
| Open Graph Title | Home |
| Open Graph Image | https://www.concretecms.com/application/files/4716/8814/5... |
Title Concrete CMS is a Free and Open Source Content Management System for Teams Meta Description Concrete CMS is an open source content management system for teams. A website builder with built in tools make editing content easy. Canonical https://www.concretecms.com/ Open Graph Title Home Open Graph Image https://www.concretecms.com/application/files/4716/8814/5... Detected Technologies
| Technology | Vue.js Bootstrap jQuery Google Analytics Google Tag Manager Nginx PHP |
Technology Vue.js Bootstrap jQuery Google Analytics Google Tag Manager Nginx PHP
HTTP Headers
| Content-type
| text/html; charset=UTF-8 |
| Date
| Mon, 27 Jul 2026 21:40:34 GMT |
| X-frame-options
| sameorigin |
| Content-encoding
| gzip |
| Server
| nginx |
| Cache-control
| max-age=600, s-maxage=600 |
| Pragma
| public |
| Expires
| Mon, 27 Jul 2026 21:50:28 GMT |
| X-xss-protection
| 1; mode=block |
| X-content-type-options
| nosniff |
| Strict-transport-security
| max-age=31536000 |
| Vary
| Accept-Encoding |
| X-cache
| Miss from cloudfront |
| Via
| 1.1 e2077a735176ccf875faf46f58083a78.cloudfront.net (CloudFront) |
| X-amz-cf-pop
| CDG50-P6 |
| X-amz-cf-id
| huiMIWSm3H5O5Oldgn-7a1uKMx6-MT-Vxuf-APOge_FIBXiu9F6zrw== |
Meta Tags
| X-UA-Compatible | IE=edge |
| Content-type | text/html; charset=UTF-8 |
| Description | Concrete CMS is an open source content management system for teams. A website builder with built in tools make editing content easy. |
| Generator | Concrete CMS |
| Viewport | width=device-width, initial-scale=1.0 |
Content-type text/html; charset=UTF-8
Date Mon, 27 Jul 2026 21:40:34 GMT
X-frame-options sameorigin
Content-encoding gzip
Server nginx
Cache-control max-age=600, s-maxage=600
Pragma public
Expires Mon, 27 Jul 2026 21:50:28 GMT
X-xss-protection 1; mode=block
X-content-type-options nosniff
Strict-transport-security max-age=31536000
Vary Accept-Encoding
X-cache Miss from cloudfront
Via 1.1 e2077a735176ccf875faf46f58083a78.cloudfront.net (CloudFront)
X-amz-cf-pop CDG50-P6
X-amz-cf-id huiMIWSm3H5O5Oldgn-7a1uKMx6-MT-Vxuf-APOge_FIBXiu9F6zrw==
