Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 216.176.183.104 |
| Compression | gzip |
|
🔒 🟡 Mixed Content (29 HTTP resources) | The page is served over HTTPS but loads 29 resource(s) over HTTP. This may be blocked in modern browsers. |
|
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 216.176.183.104
Compression gzip
🔒 🟡 Mixed Content (29 HTTP resources) The page is served over HTTPS but loads 29 resource(s) over HTTP. This may be blocked in modern browsers.
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://spl.org:443 | 301 | HTTP/1.1 301 Moved Permanently |
| 2 | https://www.spl.org/ | 200 | HTTP/1.1 200 OK |
#1 URL https://spl.org:443
HTTP Status Code 301
Status HTTP/1.1 301 Moved Permanently
#2 URL https://www.spl.org/
HTTP Status Code 200
Status HTTP/1.1 200 OK
Performance
| DNS Lookup | 8.4 ms |
| TCP Connect | 151 ms |
| TLS Handshake | 148.1 ms |
| Time To First Byte (TTFB) | 558.8 ms |
| Content Download | 142.7 ms |
| Total Response Time | 701.5 ms |
DNS Lookup 8.4 ms
TCP Connect 151 ms
TLS Handshake 148.1 ms
Time To First Byte (TTFB) 558.8 ms
Content Download 142.7 ms
Total Response Time 701.5 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=31536000 |
| 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
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 | SPL - Home | The Seattle Public Library |
| Meta Description | The Seattle Public Library gives you 24/7 free access to books, music, movies, TV shows, classes and more. |
| Open Graph Title | SPL - Home |
| Open Graph Description | The Seattle Public Library gives you 24/7 free access to books, music, movies, TV shows, classes and more. |
| Open Graph Image | https://www.spl.org//Seattle-Public-Library/images/Header... |
| Twitter Card | summary |
| Twitter Title | SPL - Home |
| Twitter Description | The Seattle Public Library gives you 24/7 free access to books, music, movies, TV shows, classes and more. |
Title SPL - Home | The Seattle Public Library Meta Description The Seattle Public Library gives you 24/7 free access to books, music, movies, TV shows, classes and more. Open Graph Title SPL - Home Open Graph Description The Seattle Public Library gives you 24/7 free access to books, music, movies, TV shows, classes and more. Open Graph Image https://www.spl.org//Seattle-Public-Library/images/Header... Twitter Card summary Twitter Title SPL - Home Twitter Description The Seattle Public Library gives you 24/7 free access to books, music, movies, TV shows, classes and more. Detected Technologies
| Technology | Bootstrap jQuery Google Analytics Google Tag Manager |
Technology Bootstrap jQuery Google Analytics Google Tag Manager
HTTP Headers
| Cache-Control
| no-cache |
| Pragma
| no-cache |
| Content-Type
| text/html; charset=utf-8 |
| Content-Encoding
| gzip |
| Expires
| -1 |
| Vary
| Accept-Encoding |
| Date
| Wed, 29 Jul 2026 19:13:14 GMT |
| Content-Length
| 22957 |
| X-Frame-Options
| sameorigin |
| X-Content-Type-Options
| nosniff |
| Strict-Transport-Security
| max-age=31536000 |
| Permissions-Policy
| camera=(), microphone=() |
| Referrer-Policy
| strict-origin-when-cross-origin |
Meta Tags
| Splx | x4 |
| Viewport | width=device-width, initial-scale=1.0 |
| Description | The Seattle Public Library gives you 24/7 free access to books, music, movies, TV shows, classes and more. |
| Keywords | SPL.org, Seattle Public Library homepage, homepage |
| Facebook-domain-verification | ayr6xx67jy1u6ooqj4hq4tz40j9jsj |
Cache-Control no-cache
Pragma no-cache
Content-Type text/html; charset=utf-8
Content-Encoding gzip
Expires -1
Vary Accept-Encoding
Date Wed, 29 Jul 2026 19:13:14 GMT
Content-Length 22957
X-Frame-Options sameorigin
X-Content-Type-Options nosniff
Strict-Transport-Security max-age=31536000
Permissions-Policy camera=(), microphone=()
Referrer-Policy strict-origin-when-cross-origin
