检查结果： loc.gov
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loc.gov 是在线的
额外信息 针对 https://loc.gov
Technical Information
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| Server Software | cloudflare |
| CDN | Cloudflare |
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| ℹ 🔵 No Compression | The server does not use Gzip or Brotli. Enable compression to reduce bandwidth usage. |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 104.17.6.58
Server Software cloudflare
CDN Cloudflare
🔒 🟡 Mixed Content (3 HTTP resources) The page is served over HTTPS but loads 3 resource(s) over HTTP. This may be blocked in modern browsers.
ℹ 🔵 No Compression The server does not use Gzip or Brotli. Enable compression to reduce bandwidth usage.
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 104.17.6.58
Server Software cloudflare
CDN Cloudflare
🔒 🟡 Mixed Content (3 HTTP resources) The page is served over HTTPS but loads 3 resource(s) over HTTP. This may be blocked in modern browsers.
ℹ 🔵 No Compression The server does not use Gzip or Brotli. Enable compression to reduce bandwidth usage.
Redirect Chain
| # | URL | HTTP Status Code | Status |
|---|---|---|---|
| 1 | https://loc.gov:443 | 301 | HTTP/2 301 |
| 2 | https://www.loc.gov/ | 200 | HTTP/2 200 |
#1 URL https://loc.gov:443
HTTP Status Code 301
Status HTTP/2 301
#2 URL https://www.loc.gov/
HTTP Status Code 200
Status HTTP/2 200
HTTP Status Code 301
Status HTTP/2 301
#2 URL https://www.loc.gov/
HTTP Status Code 200
Status HTTP/2 200
Performance
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| Content Download | 2.4 ms |
| Total Response Time | 31 ms |
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TLS Handshake 8.3 ms
Time To First Byte (TTFB) 28.6 ms
Content Download 2.4 ms
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TCP Connect 6.5 ms
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Security
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SEO Quick Check
| Title | Home | Library of Congress |
|---|---|
| Meta Description | The world's largest library. View historic photos, maps, books and more. Contact experts for help with research. Plan a visit. Home of U.S. Copyright Office. |
| Open Graph Title | Home | Library of Congress |
| Open Graph Description | The world's largest library. View historic photos, maps, books and more. Contact experts for help with research. Plan a visit. Home of U.S. Copyright Office. |
| Open Graph Image | http://www.loc.gov/static/images/favicons/open-graph-logo... |
Title Home | Library of Congress
Meta Description The world's largest library. View historic photos, maps, books and more. Contact experts for help with research. Plan a visit. Home of U.S. Copyright Office.
Open Graph Title Home | Library of Congress
Open Graph Description The world's largest library. View historic photos, maps, books and more. Contact experts for help with research. Plan a visit. Home of U.S. Copyright Office.
Open Graph Image http://www.loc.gov/static/images/favicons/open-graph-logo...
Meta Description The world's largest library. View historic photos, maps, books and more. Contact experts for help with research. Plan a visit. Home of U.S. Copyright Office.
Open Graph Title Home | Library of Congress
Open Graph Description The world's largest library. View historic photos, maps, books and more. Contact experts for help with research. Plan a visit. Home of U.S. Copyright Office.
Open Graph Image http://www.loc.gov/static/images/favicons/open-graph-logo...
Detected Technologies
| Technology | Shopify Google Analytics Cloudflare |
|---|
Technology Shopify Google Analytics Cloudflare
HTTP Headers
| Date | Thu, 20 Aug 2026 07:47:53 GMT |
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Meta Tags
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| Dc.title | Home | Library of Congress |
| Description | The world's largest library. View historic photos, maps, books and more. Contact experts for help with research. Plan a visit. Home of U.S. Copyright Office. |
| Dc.rights | Text is U.S. Government Work |
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Date Thu, 20 Aug 2026 07:47:53 GMT
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