Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 185.199.110.153 |
| Server Software | GitHub.com |
| CDN | CDN (MISS) |
| Compression | gzip |
|
ℹ 🔵 Missing HSTS | HTTP Strict Transport Security is not configured. Recommended for HTTPS sites. |
|
ℹ 🔵 Missing Content Security Policy | CSP is not configured. It helps prevent XSS attacks and content injection. |
|
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 185.199.110.153
Server Software GitHub.com
CDN CDN (MISS)
Compression gzip
ℹ 🔵 Missing HSTS HTTP Strict Transport Security is not configured. Recommended for HTTPS sites.
ℹ 🔵 Missing Content Security Policy CSP is not configured. It helps prevent XSS attacks and content injection.
ℹ 🔵 Missing X-Frame-Options The site can be embedded in iframes by third parties (clickjacking risk).
Performance
| DNS Lookup | 28.9 ms |
| TCP Connect | 29.6 ms |
| TLS Handshake | 5 ms |
| Time To First Byte (TTFB) | 139.9 ms |
| Content Download | 0.1 ms |
| Total Response Time | 140 ms |
DNS Lookup 28.9 ms
TCP Connect 29.6 ms
TLS Handshake 5 ms
Time To First Byte (TTFB) 139.9 ms
Content Download 0.1 ms
Total Response Time 140 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✘ Not configured |
| CSP | ⚠ Not configured |
| X-Frame-Options | ⚠ Not configured |
| X-Content-Type-Options | ⚠ Not configured |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✘ Not configured
CSP ⚠ Not configured
X-Frame-Options ⚠ Not configured
X-Content-Type-Options ⚠ Not configured
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | Serenio |
| Meta Description | Serenio |
Title Serenio
Meta Description Serenio
HTTP Headers
| Server
| GitHub.com |
| Content-type
| text/html; charset=utf-8 |
| Last-modified
| Tue, 14 Apr 2026 08:59:38 GMT |
| Access-control-allow-origin
| * |
| Etag
| W/"69de01fa-228" |
| Expires
| Wed, 22 Jul 2026 01:30:52 GMT |
| Cache-control
| max-age=600 |
| Content-encoding
| gzip |
| X-proxy-cache
| MISS |
| X-github-request-id
| AA2A:3AD81:2966BF:2A35B2:6A601AF2 |
| Accept-ranges
| bytes |
| Age
| 0 |
| Date
| Wed, 22 Jul 2026 01:20:52 GMT |
| Via
| 1.1 varnish |
| X-served-by
| cache-par-lfpg1960096-PAR |
| X-cache
| MISS |
| X-cache-hits
| 0 |
| X-timer
| S1784683252.974122,VS0,VE104 |
| Vary
| Accept-Encoding |
| X-fastly-request-id
| 50be65b3fcad24e3e7d953e212d33bfbb063fab8 |
| Content-length
| 297 |
Meta Tags
| Viewport | width=device-width, initial-scale=1.0 |
| Description | Serenio |
Server GitHub.com
Content-type text/html; charset=utf-8
Last-modified Tue, 14 Apr 2026 08:59:38 GMT
Access-control-allow-origin *
Etag W/"69de01fa-228"
Expires Wed, 22 Jul 2026 01:30:52 GMT
Cache-control max-age=600
Content-encoding gzip
X-proxy-cache MISS
X-github-request-id AA2A:3AD81:2966BF:2A35B2:6A601AF2
Accept-ranges bytes
Age 0
Date Wed, 22 Jul 2026 01:20:52 GMT
Via 1.1 varnish
X-served-by cache-par-lfpg1960096-PAR
X-cache MISS
X-cache-hits 0
X-timer S1784683252.974122,VS0,VE104
Vary Accept-Encoding
X-fastly-request-id 50be65b3fcad24e3e7d953e212d33bfbb063fab8
Content-length 297
