Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 104.21.65.88 |
| 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 104.21.65.88
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 | 160.2 ms |
| TCP Connect | 162.2 ms |
| TLS Handshake | 167.5 ms |
| Time To First Byte (TTFB) | 365.5 ms |
| Content Download | 0.2 ms |
| Total Response Time | 365.8 ms |
DNS Lookup 160.2 ms
TCP Connect 162.2 ms
TLS Handshake 167.5 ms
Time To First Byte (TTFB) 365.5 ms
Content Download 0.2 ms
Total Response Time 365.8 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 | Web Reference - AI Coding & Web Development Docs |
| Meta Description | Practical AI coding guides for Cursor, MCP, and prompt engineering — plus trusted HTML, CSS, and JavaScript reference documentation since 1995. |
Title Web Reference - AI Coding & Web Development Docs
Meta Description Practical AI coding guides for Cursor, MCP, and prompt engineering — plus trusted HTML, CSS, and JavaScript reference documentation since 1995.
Detected Technologies
| Technology | React Google Analytics Cloudflare Next.js |
Technology React Google Analytics Cloudflare Next.js
HTTP Headers
| Date
| Fri, 21 Aug 2026 16:42:07 GMT |
| Content-type
| text/html; charset=utf-8 |
| Set-cookie
| __cf_bm=tCVKjiFseIMg66ngmW5FXq0IiuynKRQr4rS91.L_g4c-1787330527.5591207-1.0.1.1-v4m_6QDQT6_AQ.rO8Fel0d3I5V_Vr5j7q9rcFwTfgcUpGJYxqGaglSIJlolCFF8WMCOGEGDv4XJokkQJ6MFgUB7zF5bJ2CrLmdHB_pCyKxtbCoApmN7zT.8o8lFs_xP9; HttpOnly; SameSite=None; Secure; Path=/; Domain=webreference.com; Expires=Fri, 21 Aug 2026 17:12:07 GMT |
| Server
| cloudflare |
| Last-modified
| Tue, 11 Aug 2026 12:10:52 GMT |
| X-rgw-object-type
| Normal |
| Cf-cache-status
| DYNAMIC |
| X-amz-request-id
| tx0000020dfd7090bbe689e-006a845c7b-2e1c4f29-fra1c |
| Cache-control
| public,max-age=10,s-maxage=86400 |
| Age
| 9573 |
| X-do-app-origin
| 768fb9c1-4821-423d-b0c7-a0f1dd33a6ee |
| X-do-orig-status
| 200 |
| Report-to
| {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=qA1DPMSkRV9n03rGjJ4IrNIRPylicD1zCcu%2BNQ608xVcr3l%2FrJYBkTJTeV0qO%2FcS52Qt1%2F8YGItbdsN9HbH%2FGrsxxameEVrF16zBOEwj37QYvLWUlzS77tWjZpkCFjvIGaUC2PmX75Kvn12pHkLx"}]} |
| Nel
| {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800} |
| Vary
| accept-encoding |
| Content-encoding
| gzip |
| Cf-ray
| a2eb16d52922d0ae-CDG |
| Alt-svc
| h3=":443"; ma=86400 |
Meta Tags
| Viewport | width=device-width |
| Description | Practical AI coding guides for Cursor, MCP, and prompt engineering — plus trusted HTML, CSS, and JavaScript reference documentation since 1995. |
| Next-head-count | 4 |
Date Fri, 21 Aug 2026 16:42:07 GMT
Content-type text/html; charset=utf-8
Set-cookie __cf_bm=tCVKjiFseIMg66ngmW5FXq0IiuynKRQr4rS91.L_g4c-1787330527.5591207-1.0.1.1-v4m_6QDQT6_AQ.rO8Fel0d3I5V_Vr5j7q9rcFwTfgcUpGJYxqGaglSIJlolCFF8WMCOGEGDv4XJokkQJ6MFgUB7zF5bJ2CrLmdHB_pCyKxtbCoApmN7zT.8o8lFs_xP9; HttpOnly; SameSite=None; Secure; Path=/; Domain=webreference.com; Expires=Fri, 21 Aug 2026 17:12:07 GMT
Server cloudflare
Last-modified Tue, 11 Aug 2026 12:10:52 GMT
X-rgw-object-type Normal
Cf-cache-status DYNAMIC
X-amz-request-id tx0000020dfd7090bbe689e-006a845c7b-2e1c4f29-fra1c
Cache-control public,max-age=10,s-maxage=86400
Age 9573
X-do-app-origin 768fb9c1-4821-423d-b0c7-a0f1dd33a6ee
X-do-orig-status 200
Report-to {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=qA1DPMSkRV9n03rGjJ4IrNIRPylicD1zCcu%2BNQ608xVcr3l%2FrJYBkTJTeV0qO%2FcS52Qt1%2F8YGItbdsN9HbH%2FGrsxxameEVrF16zBOEwj37QYvLWUlzS77tWjZpkCFjvIGaUC2PmX75Kvn12pHkLx"}]}
Nel {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
Vary accept-encoding
Content-encoding gzip
Cf-ray a2eb16d52922d0ae-CDG
Alt-svc h3=":443"; ma=86400
