Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 47.102.224.53 |
| Server Software | nginx/1.10.2 |
| Compression | gzip |
|
🔒 🟡 Mixed Content (30 HTTP resources) | The page is served over HTTPS but loads 30 resource(s) over HTTP. This may be blocked in modern browsers. |
|
🕐 🟡 Slow Response (1399 ms) | Response time exceeds 1 second. Consider optimizing the server or using caching. |
|
ℹ 🔵 Missing HSTS | HTTP Strict Transport Security is not configured. Recommended for HTTPS sites. |
|
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 47.102.224.53
Server Software nginx/1.10.2
Compression gzip
🔒 🟡 Mixed Content (30 HTTP resources) The page is served over HTTPS but loads 30 resource(s) over HTTP. This may be blocked in modern browsers.
🕐 🟡 Slow Response (1399 ms) Response time exceeds 1 second. Consider optimizing the server or using caching.
ℹ 🔵 Missing HSTS HTTP Strict Transport Security is not configured. Recommended for HTTPS sites.
ℹ 🔵 Missing X-Frame-Options The site can be embedded in iframes by third parties (clickjacking risk).
Performance
| DNS Lookup | 454 ms |
| TCP Connect | 653.3 ms |
| TLS Handshake | 420.7 ms |
| Time To First Byte (TTFB) | 1398.3 ms |
| Content Download | 0.2 ms |
| Total Response Time | 1398.5 ms |
DNS Lookup 454 ms
TCP Connect 653.3 ms
TLS Handshake 420.7 ms
Time To First Byte (TTFB) 1398.3 ms
Content Download 0.2 ms
Total Response Time 1398.5 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✘ Not configured |
| CSP | ✔ Configured |
| X-Frame-Options | ⚠ Not configured |
| X-Content-Type-Options | ⚠ Not configured |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✘ Not configured
CSP ✔ Configured
X-Frame-Options ⚠ Not configured
X-Content-Type-Options ⚠ Not configured
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
Title 直线课吧 - 不一样的学习方式
Detected Technologies
| Technology | Bootstrap Google Analytics Nginx PHP |
Technology Bootstrap Google Analytics Nginx PHP
HTTP Headers
| Date
| Tue, 28 Jul 2026 04:48:15 GMT |
| Content-Type
| text/html; charset=utf-8 |
| Content-Length
| 6670 |
| Connection
| keep-alive |
| Server
| nginx/1.10.2 |
| Cache-Control
| private |
| Pragma
| no-cache |
| Content-Encoding
| gzip |
| Expires
| Thu, 19 Nov 1981 08:52:00 GMT |
| Vary
| Accept-Encoding |
| Content-Security-Policy
| upgrade-insecure-requests |
| X-Powered-By
| ASP.NET |
Meta Tags
| Viewport | width=1400, initial-scale=1 |
| X-UA-Compatible | IE=edge |
Date Tue, 28 Jul 2026 04:48:15 GMT
Content-Type text/html; charset=utf-8
Content-Length 6670
Connection keep-alive
Server nginx/1.10.2
Cache-Control private
Pragma no-cache
Content-Encoding gzip
Expires Thu, 19 Nov 1981 08:52:00 GMT
Vary Accept-Encoding
Content-Security-Policy upgrade-insecure-requests
X-Powered-By ASP.NET
