Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 104.21.92.81 |
| Server Software | cloudflare |
| CDN | Cloudflare |
| Compression | gzip |
|
🔒 🟡 Mixed Content (1 HTTP resources) | The page is served over HTTPS but loads 1 resource(s) over HTTP. This may be blocked in modern browsers. |
|
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 104.21.92.81
Server Software cloudflare
CDN Cloudflare
Compression gzip
🔒 🟡 Mixed Content (1 HTTP resources) The page is served over HTTPS but loads 1 resource(s) over HTTP. This may be blocked in modern browsers.
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 | 24.2 ms |
| TCP Connect | 26.4 ms |
| TLS Handshake | 10 ms |
| Time To First Byte (TTFB) | 469.5 ms |
| Content Download | 75 ms |
| Total Response Time | 544.5 ms |
DNS Lookup 24.2 ms
TCP Connect 26.4 ms
TLS Handshake 10 ms
Time To First Byte (TTFB) 469.5 ms
Content Download 75 ms
Total Response Time 544.5 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 | Prevent Blindness: Eye Health Resources and Advocacy |
| Meta Description | Discover eye health resources from Prevent Blindness. Learn about vision diseases, safety tips, and ways to support our mission to save sight. |
| Canonical | https://preventblindness.org/ |
| Robots Meta | follow, index, max-snippet:-1, max-video-preview:-1, max-image-preview:large |
| Open Graph Title | Prevent Blindness: Eye Health Resources and Advocacy |
| Open Graph Description | Discover eye health resources from Prevent Blindness. Learn about vision diseases, safety tips, and ways to support our mission to save sight. |
| Open Graph Image | https://preventblindness.org/wp-content/uploads/2021/03/d... |
| Twitter Card | summary_large_image |
| Twitter Title | Prevent Blindness: Eye Health Resources and Advocacy |
| Twitter Description | Discover eye health resources from Prevent Blindness. Learn about vision diseases, safety tips, and ways to support our mission to save sight. |
| Twitter Image | https://preventblindness.org/wp-content/uploads/2021/03/d... |
Title Prevent Blindness: Eye Health Resources and Advocacy Meta Description Discover eye health resources from Prevent Blindness. Learn about vision diseases, safety tips, and ways to support our mission to save sight. Canonical https://preventblindness.org/ Robots Meta follow, index, max-snippet:-1, max-video-preview:-1, max-image-preview:large Open Graph Title Prevent Blindness: Eye Health Resources and Advocacy Open Graph Description Discover eye health resources from Prevent Blindness. Learn about vision diseases, safety tips, and ways to support our mission to save sight. Open Graph Image https://preventblindness.org/wp-content/uploads/2021/03/d... Twitter Card summary_large_image Twitter Title Prevent Blindness: Eye Health Resources and Advocacy Twitter Description Discover eye health resources from Prevent Blindness. Learn about vision diseases, safety tips, and ways to support our mission to save sight. Twitter Image https://preventblindness.org/wp-content/uploads/2021/03/d... Detected Technologies
| Technology | WordPress jQuery Google Analytics Google Tag Manager Cloudflare PHP Hotjar |
Technology WordPress jQuery Google Analytics Google Tag Manager Cloudflare PHP Hotjar
HTTP Headers
| Date
| Tue, 25 Aug 2026 17:58:23 GMT |
| Content-type
| text/html; charset=UTF-8 |
| Server
| cloudflare |
| Last-modified
| Tue, 25 Aug 2026 17:28:26 GMT |
| Cache-control
| max-age=0 |
| Expires
| Tue, 25 Aug 2026 17:58:23 GMT |
| Vary
| Accept-Encoding,User-Agent |
| Report-to
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| X-proxy-cache
| MISS |
| Cf-cache-status
| DYNAMIC |
| Nel
| {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800} |
| Speculation-rules
| "/cdn-cgi/speculation" |
| Server-timing
| cfEdge;dur=17,cfOrigin;dur=326 |
| Content-encoding
| gzip |
| Cf-ray
| a30c7c0b8b9543a8-CDG |
| Alt-svc
| h3=":443"; ma=86400 |
Meta Tags
| Viewport | width=device-width, initial-scale=1 |
| Msapplication-TileColor | #da532c |
| Msapplication-config | https://preventblindness.org/wp-content/uploads/fbrfg/browserconfig.xml |
| Description | Discover eye health resources from Prevent Blindness. Learn about vision diseases, safety tips, and ways to support our mission to save sight. |
| Robots | follow, index, max-snippet:-1, max-video-preview:-1, max-image-preview:large |
| Article:published_time | 2020-04-20T13:12:35-05:00 |
| Article:modified_time | 2026-08-11T17:10:00-05:00 |
| Tec-api-version | v1 |
| Tec-api-origin | https://preventblindness.org |
| Generator | Powered by WPBakery Page Builder - drag and drop page builder for WordPress. |
Date Tue, 25 Aug 2026 17:58:23 GMT
Content-type text/html; charset=UTF-8
Server cloudflare
Last-modified Tue, 25 Aug 2026 17:28:26 GMT
Cache-control max-age=0
Expires Tue, 25 Aug 2026 17:58:23 GMT
Vary Accept-Encoding,User-Agent
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X-proxy-cache MISS
Cf-cache-status DYNAMIC
Nel {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
Speculation-rules "/cdn-cgi/speculation"
Server-timing cfEdge;dur=17,cfOrigin;dur=326
Content-encoding gzip
Cf-ray a30c7c0b8b9543a8-CDG
Alt-svc h3=":443"; ma=86400
