Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 172.66.145.189 |
| Server Software | cloudflare |
| CDN | Cloudflare |
| Compression | gzip |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 172.66.145.189
Server Software cloudflare
CDN Cloudflare
Compression gzip
Redirect Chain
| # | URL | HTTP Status Code | Status |
| 1 | https://worldhistory.org:443 | 301 | HTTP/2 301 |
| 2 | https://www.worldhistory.org/ | 200 | HTTP/2 200 |
#1 URL https://worldhistory.org:443
HTTP Status Code 301
Status HTTP/2 301
#2 URL https://www.worldhistory.org/
HTTP Status Code 200
Status HTTP/2 200
Performance
| DNS Lookup | 22.9 ms |
| TCP Connect | 24.6 ms |
| TLS Handshake | 6.1 ms |
| Time To First Byte (TTFB) | 38.8 ms |
| Content Download | 1.5 ms |
| Total Response Time | 40.3 ms |
DNS Lookup 22.9 ms
TCP Connect 24.6 ms
TLS Handshake 6.1 ms
Time To First Byte (TTFB) 38.8 ms
Content Download 1.5 ms
Total Response Time 40.3 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=31536000; includeSubDomains; preload |
| CSP | ✔ Configured |
| X-Frame-Options | ✔ sameorigin |
| X-Content-Type-Options | ✔ nosniff |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=31536000; includeSubDomains; preload
CSP ✔ Configured
X-Frame-Options ✔ sameorigin
X-Content-Type-Options ✔ nosniff
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | World History Encyclopedia |
| Meta Description | The free online history encyclopedia with fact-checked articles, images, videos, maps, timelines and more; operated as a non-profit organization. |
| Canonical | https://www.worldhistory.org/ |
| Robots Meta | max-image-preview:large |
| Open Graph Title | World History Encyclopedia |
| Open Graph Image | https://www.worldhistory.org/images/ahe-og-preview.jpg |
| Twitter Card | summary_large_image |
| Twitter Title | World History Encyclopedia |
| Twitter Description | The free online history encyclopedia with fact-checked articles, images, videos, maps, timelines and more; operated as a non-profit organization. |
Title World History Encyclopedia Meta Description The free online history encyclopedia with fact-checked articles, images, videos, maps, timelines and more; operated as a non-profit organization. Canonical https://www.worldhistory.org/ Robots Meta max-image-preview:large Open Graph Title World History Encyclopedia Open Graph Image https://www.worldhistory.org/images/ahe-og-preview.jpg Twitter Card summary_large_image Twitter Title World History Encyclopedia Twitter Description The free online history encyclopedia with fact-checked articles, images, videos, maps, timelines and more; operated as a non-profit organization. Detected Technologies
| Technology | jQuery Google Analytics Google Tag Manager Cloudflare PHP |
Technology jQuery Google Analytics Google Tag Manager Cloudflare PHP
HTTP Headers
| Date
| Fri, 24 Jul 2026 03:40:10 GMT |
| Content-type
| text/html; charset=UTF-8 |
| Content-length
| 35258 |
| Server
| cloudflare |
| X-frame-options
| sameorigin |
| Content-security-policy
| frame-ancestors 'self' |
| Cache-control
| public, max-age=30, s-maxage=86400 |
| X-whe-cache-control
| public, max-age=30, s-maxage=86400 |
| Cdn-cache-control
| max-age=86400, stale-while-revalidate=86400 |
| X-whe-cdn-cache-control
| max-age=86400, stale-while-revalidate=86400 |
| X-whe-cache
| cache file, last transmitted on 2026-07-24 02:00:12 |
| Expires
| Sat, 25 Jul 2026 01:51:14 GMT |
| Last-modified
| Fri, 24 Jul 2026 01:51:14 GMT |
| Etag
| "ff1a2f5a3064295b5f2ed43b2f3258d6-gzip" |
| Vary
| Accept-Encoding,User-Agent |
| Content-encoding
| gzip |
| X-content-type-options
| nosniff |
| Strict-transport-security
| max-age=31536000; includeSubDomains; preload |
| Cross-origin-opener-policy
| same-origin-allow-popups |
| Accept-ch
| Sec-CH-UA-Mobile, Sec-CH-UA-Model, Sec-CH-UA-Platform, Sec-CH-UA-Platform-Version |
| Accept-ranges
| bytes |
| Age
| 5997 |
| Cf-cache-status
| HIT |
| Server-timing
| cfEdge;dur=4,cfOrigin;dur=0 |
| Cf-ray
| a1ffe6e39fc3d475-CDG |
| Alt-svc
| h3=":443"; ma=86400 |
Meta Tags
| Viewport | width=device-width, initial-scale=1.0, shrink-to-fit=no |
| Content-Type | text/html; charset=utf-8 |
| Theme-color | #293744 |
| Msapplication-navbutton-color | #293744 |
| Apple-mobile-web-app-status-bar-style | #293744 |
| Robots | max-image-preview:large |
| Description | The free online history encyclopedia with fact-checked articles, images, videos, maps, timelines and more; operated as a non-profit organization. |
| Push:image |  |
| Fb:pages | 104430692066157 |
| Article:content_tier | free |
| Article:opinion | false |
| Content-Security-Policy | upgrade-insecure-requests |
| P:domain_verify | b24695bfa00137b2e95cb4ca94c3f5dd |
| Flattr:id | 62l7dn |
| Apple-itunes-app | app-id=6759783430 |
Date Fri, 24 Jul 2026 03:40:10 GMT
Content-type text/html; charset=UTF-8
Content-length 35258
Server cloudflare
X-frame-options sameorigin
Content-security-policy frame-ancestors 'self'
Cache-control public, max-age=30, s-maxage=86400
X-whe-cache-control public, max-age=30, s-maxage=86400
Cdn-cache-control max-age=86400, stale-while-revalidate=86400
X-whe-cdn-cache-control max-age=86400, stale-while-revalidate=86400
X-whe-cache cache file, last transmitted on 2026-07-24 02:00:12
Expires Sat, 25 Jul 2026 01:51:14 GMT
Last-modified Fri, 24 Jul 2026 01:51:14 GMT
Etag "ff1a2f5a3064295b5f2ed43b2f3258d6-gzip"
Vary Accept-Encoding,User-Agent
Content-encoding gzip
X-content-type-options nosniff
Strict-transport-security max-age=31536000; includeSubDomains; preload
Cross-origin-opener-policy same-origin-allow-popups
Accept-ch Sec-CH-UA-Mobile, Sec-CH-UA-Model, Sec-CH-UA-Platform, Sec-CH-UA-Platform-Version
Accept-ranges bytes
Age 5997
Cf-cache-status HIT
Server-timing cfEdge;dur=4,cfOrigin;dur=0
Cf-ray a1ffe6e39fc3d475-CDG
Alt-svc h3=":443"; ma=86400
