额外信息 针对 https://clker.com
Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 45.79.93.41 |
| Server Software | Apache/2.4.52 (Ubuntu) |
| Compression | gzip |
|
🔒 🟡 Mixed Content (4 HTTP resources) | The page is served over HTTPS but loads 4 resource(s) over HTTP. This may be blocked in modern browsers. |
|
🕐 🟡 Slow Response (1442 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 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 45.79.93.41
Server Software Apache/2.4.52 (Ubuntu)
Compression gzip
🔒 🟡 Mixed Content (4 HTTP resources) The page is served over HTTPS but loads 4 resource(s) over HTTP. This may be blocked in modern browsers.
🕐 🟡 Slow Response (1442 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 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).
Redirect Chain
| # | URL | HTTP Status Code | Status |
| 1 | https://clker.com:443 | 301 | HTTP/1.1 301 Moved Permanently |
| 2 | http://www.clker.com/ | 200 | HTTP/1.1 200 OK |
#1 URL https://clker.com:443
HTTP Status Code 301
Status HTTP/1.1 301 Moved Permanently
#2 URL http://www.clker.com/
HTTP Status Code 200
Status HTTP/1.1 200 OK
Performance
| DNS Lookup | 318.7 ms |
| TCP Connect | 483 ms |
| TLS Handshake | ~80 ms |
| Time To First Byte (TTFB) | 1442 ms |
| Content Download | 0.2 ms |
| Total Response Time | 1442.2 ms |
DNS Lookup 318.7 ms
TCP Connect 483 ms
TLS Handshake ~80 ms
Time To First Byte (TTFB) 1442 ms
Content Download 0.2 ms
Total Response Time 1442.2 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 | Free Clip Art & Images - Millions of Royalty Free Images | Clker |
| Meta Description | Clker.com provides hundreds of thousands of free clip art & vector images that you can download or embed anywhere at no cost. The best in free images. |
| Robots Meta | all |
Title Free Clip Art & Images - Millions of Royalty Free Images | Clker
Meta Description Clker.com provides hundreds of thousands of free clip art & vector images that you can download or embed anywhere at no cost. The best in free images.
Robots Meta all
Detected Technologies
| Technology | Google Analytics Apache PHP |
Technology Google Analytics Apache PHP
HTTP Headers
| Date
| Sun, 23 Aug 2026 06:57:37 GMT |
| Server
| Apache/2.4.52 (Ubuntu) |
| Content-language
| en |
| Cache-Control
| no-cache |
| Vary
| Accept-Encoding |
| Content-Encoding
| gzip |
| Content-Length
| 6063 |
| Content-Type
| text/html; charset=UTF-8 |
Meta Tags
| Keywords | royalty free images, royalty free clip art, clker, clipart, clip, art, openoffice, openoffice.org, public domain, creative commons, svg, odg, png, cartoon, vector clip art, royalty free images, royalty free graphic, stock photos |
| Description | Clker.com provides hundreds of thousands of free clip art & vector images that you can download or embed anywhere at no cost. The best in free images. |
| Robots | all |
Date Sun, 23 Aug 2026 06:57:37 GMT
Server Apache/2.4.52 (Ubuntu)
Content-language en
Cache-Control no-cache
Vary Accept-Encoding
Content-Encoding gzip
Content-Length 6063
Content-Type text/html; charset=UTF-8
Keywords royalty free images, royalty free clip art, clker, clipart, clip, art, openoffice, openoffice.org, public domain, creative commons, svg, odg, png, cartoon, vector clip art, royalty free images, royalty free graphic, stock photos
Description Clker.com provides hundreds of thousands of free clip art & vector images that you can download or embed anywhere at no cost. The best in free images.
Robots all
