Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 13.192.228.198 |
| Server Software | nginx |
| CDN | CDN (Miss from cloudfront) |
|
🔒 🟡 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. |
|
🕐 🟡 Slow Response (1919 ms) | Response time exceeds 1 second. Consider optimizing the server or using caching. |
|
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 13.192.228.198
Server Software nginx
CDN CDN (Miss from cloudfront)
🔒 🟡 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.
🕐 🟡 Slow Response (1919 ms) Response time exceeds 1 second. Consider optimizing the server or using caching.
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://kds.jp:443 | 302 | HTTP/2 302 |
| 2 | https://www.kodansha.co.jp:443/ | 200 | HTTP/2 200 |
#1 URL https://kds.jp:443
HTTP Status Code 302
Status HTTP/2 302
#2 URL https://www.kodansha.co.jp:443/
HTTP Status Code 200
Status HTTP/2 200
Performance
| DNS Lookup | 157.7 ms |
| TCP Connect | 158.6 ms |
| TLS Handshake | 7.5 ms |
| Time To First Byte (TTFB) | 1040.9 ms |
| Content Download | 878.2 ms |
| Total Response Time | 1919.1 ms |
DNS Lookup 157.7 ms
TCP Connect 158.6 ms
TLS Handshake 7.5 ms
Time To First Byte (TTFB) 1040.9 ms
Content Download 878.2 ms
Total Response Time 1919.1 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=31536000 |
| CSP | ✔ Configured |
| X-Frame-Options | ✔ SAMEORIGIN |
| X-Content-Type-Options | ✔ nosniff |
| Referrer Policy | strict-origin-when-cross-origin |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=31536000
CSP ✔ Configured
X-Frame-Options ✔ SAMEORIGIN
X-Content-Type-Options ✔ nosniff
Referrer Policy strict-origin-when-cross-origin
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | 講談社「おもしろくて、ためになる」を世界へ |
| Meta Description | 講談社の公式ホームページ総合トップページ。講談社が出版する書籍・コミックの新刊情報、作品検索、会社情報、講談社が運営する各種サービス・コンテンツなどをご紹介します。 |
| Robots Meta | index,follow |
| Open Graph Title | 講談社「おもしろくて、ためになる」を世界へ |
| Open Graph Description | 講談社の公式ホームページ総合トップページ。講談社が出版する書籍・コミックの新刊情報、作品検索、会社情報、講談社が運営する各種サービス・コンテンツなどをご紹介します。 |
| Open Graph Image | https://www.kodansha.co.jp/build/assets/ogp-DizeNaVn.png |
Title 講談社「おもしろくて、ためになる」を世界へ Meta Description 講談社の公式ホームページ総合トップページ。講談社が出版する書籍・コミックの新刊情報、作品検索、会社情報、講談社が運営する各種サービス・コンテンツなどをご紹介します。 Robots Meta index,follow Open Graph Title 講談社「おもしろくて、ためになる」を世界へ Open Graph Description 講談社の公式ホームページ総合トップページ。講談社が出版する書籍・コミックの新刊情報、作品検索、会社情報、講談社が運営する各種サービス・コンテンツなどをご紹介します。 Open Graph Image https://www.kodansha.co.jp/build/assets/ogp-DizeNaVn.png Detected Technologies
| Technology | Google Analytics Google Tag Manager Nginx |
Technology Google Analytics Google Tag Manager Nginx
HTTP Headers
| Content-type
| text/html; charset=utf-8 |
| Date
| Fri, 21 Aug 2026 09:21:26 GMT |
| X-xss-protection
| 1; mode=block |
| X-content-type-options
| nosniff |
| Server
| nginx |
| Cache-control
| no-cache, private |
| Content-security-policy
| default-src 'self'; img-src 'self' https://www-static.kodansha.co.jp https://dvs-cover.kodansha.co.jp https://image.news.kodansha.co.jp https://*.mzstatic.com https://*.google-analytics.com https://*.analytics.google.com https://*.googletagmanager.com https://*.g.doubleclick.net https://*.google.com https://*.google.co.jp; media-src 'self' https://www-static.kodansha.co.jp; frame-src 'self' https://www.youtube.com; frame-ancestors 'self'; form-action 'self' https://id-members.kodansha.co.jp https://www.kinokuniya.co.jp; font-src 'self' https://fonts.gstatic.com; connect-src 'self' https://*.google-analytics.com https://*.analytics.google.com https://*.googletagmanager.com https://*.g.doubleclick.net https://*.google.com https://*.google.co.jp; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; script-src 'nonce-J4xLVTgxRx7u07Qq0Op6iDPJCtnhu4o6qk6U1OCa' |
| Set-cookie
| kds-pr-site-web-session=eyJpdiI6Im02WTJFL21UUnRQYUU0cHNOdlR6cUE9PSIsInZhbHVlIjoiTzdyVzY5N3NaQlI2TmNzbW9Sd0FHaVBMeHpoZ0Vma1M3QjQyTDlyWDMrbi9QZ25XdHk5c2hlak5WV28rc2NaMW94ZzBYUThTN0VXTFplLzdOeTRFcko3Q3VWdDdCc1Q5V0xPQmR6bHpkaG5BRVZMRUJYTktwMHVZc3ljYVlBbkYiLCJtYWMiOiIzZjIyMzVmMTkwODYzOGIwYWJkYmQyYTYxOThhYWRjYzg5ZDI1NWE3NDNkMjYyOTJiYTU4ZmI2YTYxYWI3MTM0IiwidGFnIjoiIn0%3D; expires=Fri, 21 Aug 2026 11:21:26 GMT; Max-Age=7200; path=/; secure; httponly; samesite=lax |
| X-frame-options
| SAMEORIGIN |
| X-cache
| Miss from cloudfront |
| Via
| 1.1 5fe2da41cd75eab6975741ba54093788.cloudfront.net (CloudFront) |
| X-amz-cf-pop
| CDG54-P1 |
| X-amz-cf-id
| P28iWOE1VjzT5JL32RAME86fo-tosrtcYrgD8QHMF36K64lQKvJl2Q== |
| Referrer-policy
| strict-origin-when-cross-origin |
| Strict-transport-security
| max-age=31536000 |
Meta Tags
| X-ua-compatible | ie=edge |
| Viewport | width=device-width,initial-scale=1 |
| Robots | index,follow |
| Description | 講談社の公式ホームページ総合トップページ。講談社が出版する書籍・コミックの新刊情報、作品検索、会社情報、講談社が運営する各種サービス・コンテンツなどをご紹介します。 |
Content-type text/html; charset=utf-8
Date Fri, 21 Aug 2026 09:21:26 GMT
X-xss-protection 1; mode=block
X-content-type-options nosniff
Server nginx
Cache-control no-cache, private
Content-security-policy default-src 'self'; img-src 'self' https://www-static.kodansha.co.jp https://dvs-cover.kodansha.co.jp https://image.news.kodansha.co.jp https://*.mzstatic.com https://*.google-analytics.com https://*.analytics.google.com https://*.googletagmanager.com https://*.g.doubleclick.net https://*.google.com https://*.google.co.jp; media-src 'self' https://www-static.kodansha.co.jp; frame-src 'self' https://www.youtube.com; frame-ancestors 'self'; form-action 'self' https://id-members.kodansha.co.jp https://www.kinokuniya.co.jp; font-src 'self' https://fonts.gstatic.com; connect-src 'self' https://*.google-analytics.com https://*.analytics.google.com https://*.googletagmanager.com https://*.g.doubleclick.net https://*.google.com https://*.google.co.jp; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; script-src 'nonce-J4xLVTgxRx7u07Qq0Op6iDPJCtnhu4o6qk6U1OCa'
Set-cookie kds-pr-site-web-session=eyJpdiI6Im02WTJFL21UUnRQYUU0cHNOdlR6cUE9PSIsInZhbHVlIjoiTzdyVzY5N3NaQlI2TmNzbW9Sd0FHaVBMeHpoZ0Vma1M3QjQyTDlyWDMrbi9QZ25XdHk5c2hlak5WV28rc2NaMW94ZzBYUThTN0VXTFplLzdOeTRFcko3Q3VWdDdCc1Q5V0xPQmR6bHpkaG5BRVZMRUJYTktwMHVZc3ljYVlBbkYiLCJtYWMiOiIzZjIyMzVmMTkwODYzOGIwYWJkYmQyYTYxOThhYWRjYzg5ZDI1NWE3NDNkMjYyOTJiYTU4ZmI2YTYxYWI3MTM0IiwidGFnIjoiIn0%3D; expires=Fri, 21 Aug 2026 11:21:26 GMT; Max-Age=7200; path=/; secure; httponly; samesite=lax
X-frame-options SAMEORIGIN
X-cache Miss from cloudfront
Via 1.1 5fe2da41cd75eab6975741ba54093788.cloudfront.net (CloudFront)
X-amz-cf-pop CDG54-P1
X-amz-cf-id P28iWOE1VjzT5JL32RAME86fo-tosrtcYrgD8QHMF36K64lQKvJl2Q==
Referrer-policy strict-origin-when-cross-origin
Strict-transport-security max-age=31536000
