Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 104.18.5.247 |
| Server Software | cloudflare |
| CDN | Cloudflare |
| Compression | gzip |
|
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 104.18.5.247
Server Software cloudflare
CDN Cloudflare
Compression gzip
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://diagrams.net:443 | 301 | HTTP/2 301 |
| 2 | https://www.drawio.com/ | 200 | HTTP/2 200 |
#1 URL https://diagrams.net:443
HTTP Status Code 301
Status HTTP/2 301
#2 URL https://www.drawio.com/
HTTP Status Code 200
Status HTTP/2 200
Performance
| DNS Lookup | 8.3 ms |
| TCP Connect | 10.2 ms |
| TLS Handshake | 8.7 ms |
| Time To First Byte (TTFB) | 67.7 ms |
| Content Download | 0.2 ms |
| Total Response Time | 67.9 ms |
DNS Lookup 8.3 ms
TCP Connect 10.2 ms
TLS Handshake 8.7 ms
Time To First Byte (TTFB) 67.7 ms
Content Download 0.2 ms
Total Response Time 67.9 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=31536000; includeSubDomains; preload |
| CSP | ⚠ Not configured |
| X-Frame-Options | ⚠ Not configured |
| X-Content-Type-Options | ✔ nosniff |
| Referrer Policy | strict-origin-when-cross-origin |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=31536000; includeSubDomains; preload
CSP ⚠ Not configured
X-Frame-Options ⚠ Not configured
X-Content-Type-Options ✔ nosniff
Referrer Policy strict-origin-when-cross-origin
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
Detected Technologies
| Technology | Google Analytics Cloudflare Apache |
Technology Google Analytics Cloudflare Apache
HTTP Headers
| Date
| Sun, 23 Aug 2026 18:36:31 GMT |
| Content-type
| text/html; charset=utf-8 |
| X-content-type-options
| nosniff |
| Report-to
| {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=jV7LKpNVYV0lF49rHBW%2BIalNqP8gXTjfmCxUPe2BIOtLONokbqYANK7PL8BKxBEO8vqNSKOUOag32ZE57h%2FtXmltJUahlpWAEUB0qUg%2FpWlpL305oOrLcmFi%2F13jDMYoJHhOLYQuSSfCh94fVQ%3D%3D"}]} |
| Nel
| {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800} |
| Access-control-allow-origin
| * |
| Cache-control
| public, max-age=0, must-revalidate |
| Referrer-policy
| strict-origin-when-cross-origin |
| Link
| ; rel="preconnect", ; rel="preload"; as=image, ; rel="preload"; as=image, ; rel="preload"; as=image, ; rel="preload"; as=image, ; rel="preload"; as=image, ; rel="preload"; as=image, ; rel="preload"; as=image, ; rel="preload"; as=image |
| Vary
| accept-encoding |
| Strict-transport-security
| max-age=31536000; includeSubDomains; preload |
| Server
| cloudflare |
| Cf-cache-status
| DYNAMIC |
| Content-encoding
| gzip |
| Cf-ray
| a2fc39269cf9237d-CDG |
Meta Tags
| Generator | Docusaurus v3.9.2 |
| Viewport | width=device-width,initial-scale=1 |
| Docusaurus_locale | en |
| Docusaurus_tag | default |
| Docsearch:language | en |
| Docsearch:docusaurus_tag | default |
| Description | Free, open source diagramming application with 100M+ users. Store your data wherever you want—we can't access it. |
Date Sun, 23 Aug 2026 18:36:31 GMT
Content-type text/html; charset=utf-8
X-content-type-options nosniff
Report-to {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=jV7LKpNVYV0lF49rHBW%2BIalNqP8gXTjfmCxUPe2BIOtLONokbqYANK7PL8BKxBEO8vqNSKOUOag32ZE57h%2FtXmltJUahlpWAEUB0qUg%2FpWlpL305oOrLcmFi%2F13jDMYoJHhOLYQuSSfCh94fVQ%3D%3D"}]}
Nel {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
Access-control-allow-origin *
Cache-control public, max-age=0, must-revalidate
Referrer-policy strict-origin-when-cross-origin
Link ; rel="preconnect", ; rel="preload"; as=image, ; rel="preload"; as=image, ; rel="preload"; as=image, ; rel="preload"; as=image, ; rel="preload"; as=image, ; rel="preload"; as=image, ; rel="preload"; as=image, ; rel="preload"; as=image
Vary accept-encoding
Strict-transport-security max-age=31536000; includeSubDomains; preload
Server cloudflare
Cf-cache-status DYNAMIC
Content-encoding gzip
Cf-ray a2fc39269cf9237d-CDG
