Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 194.245.143.90 |
| Compression | gzip |
|
🔒 🟡 Mixed Content (2 HTTP resources) | The page is served over HTTPS but loads 2 resource(s) over HTTP. This may be blocked in modern browsers. |
|
🕐 🔴 Very Slow Response (3333 ms) | Response time exceeds 3 seconds. This severely impacts SEO and user experience. |
|
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 194.245.143.90
Compression gzip
🔒 🟡 Mixed Content (2 HTTP resources) The page is served over HTTPS but loads 2 resource(s) over HTTP. This may be blocked in modern browsers.
🕐 🔴 Very Slow Response (3333 ms) Response time exceeds 3 seconds. This severely impacts SEO and user experience.
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://vdi.de:443 | 301 | HTTP/2 301 |
| 2 | https://www.vdi.de/ | 200 | HTTP/2 200 |
#1 URL https://vdi.de:443
HTTP Status Code 301
Status HTTP/2 301
#2 URL https://www.vdi.de/
HTTP Status Code 200
Status HTTP/2 200
Performance
| DNS Lookup | 52.5 ms |
| TCP Connect | 67.9 ms |
| TLS Handshake | 49.4 ms |
| Time To First Byte (TTFB) | 3316.5 ms |
| Content Download | 16.4 ms |
| Total Response Time | 3332.9 ms |
DNS Lookup 52.5 ms
TCP Connect 67.9 ms
TLS Handshake 49.4 ms
Time To First Byte (TTFB) 3316.5 ms
Content Download 16.4 ms
Total Response Time 3332.9 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=31536000; includeSubDomains |
| CSP | ⚠ Not configured |
| X-Frame-Options | ✔ sameorigin |
| X-Content-Type-Options | ✔ nosniff |
| Referrer Policy | strict-origin-when-cross-origin |
| Permissions Policy | ✔ Configured |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=31536000; includeSubDomains
CSP ⚠ Not configured
X-Frame-Options ✔ sameorigin
X-Content-Type-Options ✔ nosniff
Referrer Policy strict-origin-when-cross-origin
Permissions Policy ✔ Configured
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | Verein Deutscher Ingenieure e.V. | VDI |
| Meta Description | Rund 125.000 Ingenieurinnen und Ingenieure sind Mitglied im größten technisch-wissenschaftlichen Verein Europas, dem VDI. |
| Canonical | https://www.vdi.de/ |
| Robots Meta | index,follow |
| Open Graph Title | VDI.de |
| Open Graph Description | Rund 125.000 Ingenieurinnen und Ingenieure sind Mitglied im größten technisch-wissenschaftlichen Verein Europas, dem VDI. |
| Twitter Card | summary |
Title Verein Deutscher Ingenieure e.V. | VDI
Meta Description Rund 125.000 Ingenieurinnen und Ingenieure sind Mitglied im größten technisch-wissenschaftlichen Verein Europas, dem VDI.
Canonical https://www.vdi.de/
Robots Meta index,follow
Open Graph Title VDI.de
Open Graph Description Rund 125.000 Ingenieurinnen und Ingenieure sind Mitglied im größten technisch-wissenschaftlichen Verein Europas, dem VDI.
Twitter Card summary
Detected Technologies
| Technology | Bootstrap jQuery Google Analytics Google Tag Manager PHP |
Technology Bootstrap jQuery Google Analytics Google Tag Manager PHP
HTTP Headers
| Date
| Wed, 22 Jul 2026 11:54:58 GMT |
| Content-type
| text/html; charset=utf-8 |
| Content-language
| de-DE |
| Cache-control
| max-age=0 |
| X-typo3-parsetime
| 0ms |
| Content-encoding
| gzip |
| Vary
| Accept-Encoding |
| Strict-transport-security
| max-age=31536000; includeSubDomains |
| X-frame-options
| sameorigin |
| X-content-type-options
| nosniff |
| X-xss-protection
| 0 |
| Expires
| Wed, 22 Jul 2026 11:54:55 GMT |
| Set-cookie
| LBZ=LBZT1; path=/; secure; HttpOnly; SameSite=Strict |
| X-ua-compatible
| IE=edge |
| Cross-origin-embedder-policy
| unsafe-none |
| Cross-origin-opener-policy
| same-origin-allow-popups |
| Cross-origin-resource-policy
| cross-origin |
| Permissions-policy
| accelerometer=(), ambient-light-sensor=(), autoplay=(), battery=(), camera=(), display-capture=(), document-domain=(), encrypted-media=(), fullscreen=(), gamepad=(), geolocation=(), gyroscope=(), layout-animations=(self), legacy-image-formats=(self), magnetometer=(), microphone=(), midi=(), oversized-images=(self), payment=(), picture-in-picture=(), publickey-credentials-get=(), speaker-selection=(), sync-xhr=(self), unoptimized-images=(self), unsized-media=(self), usb=(), screen-wake-lock=(), web-share=(), xr-spatial-tracking=() |
| Referrer-policy
| strict-origin-when-cross-origin |
| X-permitted-cross-domain-policies
| none |
Meta Tags
| X-ua-compatible | IE=edge |
| Generator | TYPO3 CMS |
| Description | Rund 125.000 Ingenieurinnen und Ingenieure sind Mitglied im größten technisch-wissenschaftlichen Verein Europas, dem VDI. |
| Viewport | width=device-width, initial-scale=1, minimum-scale=1 |
| Robots | index,follow |
| Keywords | VDI, Ingenieure, Ingenieurinnen |
| Apple-mobile-web-app-capable | no |
| Theme-color | #ffffff |
| Google | notranslate |
Date Wed, 22 Jul 2026 11:54:58 GMT
Content-type text/html; charset=utf-8
Content-language de-DE
Cache-control max-age=0
X-typo3-parsetime 0ms
Content-encoding gzip
Vary Accept-Encoding
Strict-transport-security max-age=31536000; includeSubDomains
X-frame-options sameorigin
X-content-type-options nosniff
X-xss-protection 0
Expires Wed, 22 Jul 2026 11:54:55 GMT
Set-cookie LBZ=LBZT1; path=/; secure; HttpOnly; SameSite=Strict
X-ua-compatible IE=edge
Cross-origin-embedder-policy unsafe-none
Cross-origin-opener-policy same-origin-allow-popups
Cross-origin-resource-policy cross-origin
Permissions-policy accelerometer=(), ambient-light-sensor=(), autoplay=(), battery=(), camera=(), display-capture=(), document-domain=(), encrypted-media=(), fullscreen=(), gamepad=(), geolocation=(), gyroscope=(), layout-animations=(self), legacy-image-formats=(self), magnetometer=(), microphone=(), midi=(), oversized-images=(self), payment=(), picture-in-picture=(), publickey-credentials-get=(), speaker-selection=(), sync-xhr=(self), unoptimized-images=(self), unsized-media=(self), usb=(), screen-wake-lock=(), web-share=(), xr-spatial-tracking=()
Referrer-policy strict-origin-when-cross-origin
X-permitted-cross-domain-policies none
