Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 172.104.136.213 |
| Server Software | nginx |
| Compression | gzip |
|
🔒 🟡 Mixed Content (3 HTTP resources) | The page is served over HTTPS but loads 3 resource(s) over HTTP. This may be blocked in modern browsers. |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 172.104.136.213
Server Software nginx
Compression gzip
🔒 🟡 Mixed Content (3 HTTP resources) The page is served over HTTPS but loads 3 resource(s) over HTTP. This may be blocked in modern browsers.
Redirect Chain
| # | URL | HTTP Status Code | Status |
| 1 | https://irb.hr:443 | 301 | HTTP/2 301 |
| 2 | https://www.irb.hr/ | 200 | HTTP/2 200 |
#1 URL https://irb.hr:443
HTTP Status Code 301
Status HTTP/2 301
#2 URL https://www.irb.hr/
HTTP Status Code 200
Status HTTP/2 200
Performance
| DNS Lookup | 41 ms |
| TCP Connect | 50.6 ms |
| TLS Handshake | 13.3 ms |
| Time To First Byte (TTFB) | 76 ms |
| Content Download | 9 ms |
| Total Response Time | 85 ms |
DNS Lookup 41 ms
TCP Connect 50.6 ms
TLS Handshake 13.3 ms
Time To First Byte (TTFB) 76 ms
Content Download 9 ms
Total Response Time 85 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=15768000 |
| CSP | ✔ Configured |
| X-Frame-Options | ✔ SAMEORIGIN |
| X-Content-Type-Options | ⚠ Not configured |
| Permissions Policy | ✔ Configured |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=15768000
CSP ✔ Configured
X-Frame-Options ✔ SAMEORIGIN
X-Content-Type-Options ⚠ Not configured
Permissions Policy ✔ Configured
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | Početna - Institut Ruđer Bošković |
| Meta Description | Institut je najveći hrvatski znanstveno-istraživački centar multidisciplinarnog karaktera |
| Open Graph Title | Institut Ruđer Bošković |
| Open Graph Description | Institut Ruđer Bošković |
| Open Graph Image | https://www.irb.hr/bundles/irb/images/opengraph.png |
Title Početna - Institut Ruđer Bošković Meta Description Institut je najveći hrvatski znanstveno-istraživački centar multidisciplinarnog karaktera Open Graph Title Institut Ruđer Bošković Open Graph Description Institut Ruđer Bošković Open Graph Image https://www.irb.hr/bundles/irb/images/opengraph.png Detected Technologies
| Technology | Google Analytics Google Tag Manager Nginx |
Technology Google Analytics Google Tag Manager Nginx
HTTP Headers
| Server
| nginx |
| Content-type
| text/html; charset=UTF-8 |
| Date
| Wed, 19 Aug 2026 22:34:04 GMT |
| X-varnish
| 781615604 780386754 |
| Age
| 1453 |
| Vary
| Accept-Encoding |
| Cache-control
| public, s-maxage=600, stale-while-revalidate=300, stale-if-error=300 |
| Accept-ranges
| bytes |
| Via
| 1.1 varnish |
| Strict-transport-security
| max-age=15768000 |
| Content-security-policy
| object-src *;script-src * 'unsafe-inline' 'unsafe-eval' data: blob:;worker-src blob: |
| X-frame-options
| SAMEORIGIN |
| Permissions-policy
| geolocation=(self "https://www.irb.hr"), microphone=() |
| Content-encoding
| gzip |
Meta Tags
| Keywords | Institut Ruđer Bošković |
| Description | Institut je najveći hrvatski znanstveno-istraživački centar multidisciplinarnog karaktera |
| Generator | eZ Platform powered by Netgen |
| Viewport | width=device-width, initial-scale=1.0 |
| Google-site-verification | tFUDBVCiMnH9O8PkwsmIYUYy23XLotFxVi46IpEVQp8 |
| Fb:app_id | 663271570974033 |
| Fb:pages | 212426538782159 |
Server nginx
Content-type text/html; charset=UTF-8
Date Wed, 19 Aug 2026 22:34:04 GMT
X-varnish 781615604 780386754
Age 1453
Vary Accept-Encoding
Cache-control public, s-maxage=600, stale-while-revalidate=300, stale-if-error=300
Accept-ranges bytes
Via 1.1 varnish
Strict-transport-security max-age=15768000
Content-security-policy object-src *;script-src * 'unsafe-inline' 'unsafe-eval' data: blob:;worker-src blob:
X-frame-options SAMEORIGIN
Permissions-policy geolocation=(self "https://www.irb.hr"), microphone=()
Content-encoding gzip
