Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 104.18.11.47 |
| Server Software | cloudflare |
| CDN | Cloudflare |
| 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 104.18.11.47
Server Software cloudflare
CDN Cloudflare
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 | 5.2 ms |
| TCP Connect | 6.9 ms |
| TLS Handshake | 8.5 ms |
| Time To First Byte (TTFB) | 41.8 ms |
| Content Download | 0.2 ms |
| Total Response Time | 42 ms |
DNS Lookup 5.2 ms
TCP Connect 6.9 ms
TLS Handshake 8.5 ms
Time To First Byte (TTFB) 41.8 ms
Content Download 0.2 ms
Total Response Time 42 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✘ Not configured |
| CSP | ⚠ Not configured |
| X-Frame-Options | ⚠ Not configured |
| X-Content-Type-Options | ✔ nosniff |
| Referrer Policy | strict-origin-when-cross-origin |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✘ Not configured
CSP ⚠ Not configured
X-Frame-Options ⚠ Not configured
X-Content-Type-Options ✔ nosniff
Referrer Policy strict-origin-when-cross-origin
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | Signal >> Home |
| Open Graph Title | Signal Messenger: Speak Freely |
| Open Graph Description | Say "hello" to a different messaging experience. An unexpected focus on privacy, combined with all of the features you expect. |
| Open Graph Image | https://signal.org/assets/images/og/og-image.png |
| Twitter Card | app |
Title Signal >> Home Open Graph Title Signal Messenger: Speak Freely Open Graph Description Say "hello" to a different messaging experience. An unexpected focus on privacy, combined with all of the features you expect. Open Graph Image https://signal.org/assets/images/og/og-image.png Twitter Card app Detected Technologies
| Technology | Google Analytics Cloudflare Node.js |
Technology Google Analytics Cloudflare Node.js
HTTP Headers
| Date
| Tue, 21 Jul 2026 18:02:09 GMT |
| Content-type
| text/html; charset=utf-8 |
| X-content-type-options
| nosniff |
| Report-to
| {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=o96UQQhRl0jpdaDZELc6LmcS4ar6r3I%2FUNmS8QXka67C4NTBuem9UkqDy%2BhMGhCDchdFYFxezgDzQq%2BcO8uqjcIx4uVaDxIsiLMjB%2BYZOFcupGLFG37eazwWkMXB1rGK%2BokYD7eg6Fiy"}]} |
| Nel
| {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800} |
| Access-control-allow-origin
| * |
| Cache-control
| public, max-age=0, must-revalidate |
| Referrer-policy
| strict-origin-when-cross-origin |
| Vary
| accept-encoding |
| Server
| cloudflare |
| Cf-cache-status
| DYNAMIC |
| Content-encoding
| gzip |
| Cf-ray
| a1ec1d6e6f5d9378-CDG |
| Alt-svc
| h3=":443"; ma=86400 |
Meta Tags
| X-UA-Compatible | IE=edge |
| Viewport | width=device-width, initial-scale=1 |
| Apple-itunes-app | app-id=874139669 |
| Msapplication-TileColor | #e3e8fe |
| Msapplication-config | /assets/images/favicon/browserconfig.xml |
| Theme-color | #e3e8fe |
Date Tue, 21 Jul 2026 18:02:09 GMT
Content-type text/html; charset=utf-8
X-content-type-options nosniff
Report-to {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=o96UQQhRl0jpdaDZELc6LmcS4ar6r3I%2FUNmS8QXka67C4NTBuem9UkqDy%2BhMGhCDchdFYFxezgDzQq%2BcO8uqjcIx4uVaDxIsiLMjB%2BYZOFcupGLFG37eazwWkMXB1rGK%2BokYD7eg6Fiy"}]}
Nel {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
Access-control-allow-origin *
Cache-control public, max-age=0, must-revalidate
Referrer-policy strict-origin-when-cross-origin
Vary accept-encoding
Server cloudflare
Cf-cache-status DYNAMIC
Content-encoding gzip
Cf-ray a1ec1d6e6f5d9378-CDG
Alt-svc h3=":443"; ma=86400
