Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 23.185.0.1 |
| Server Software | nginx |
| CDN | CDN (MISS, MISS, MISS, MISS) |
| Compression | gzip |
|
🕐 🟡 Slow Response (1869 ms) | Response time exceeds 1 second. Consider optimizing the server or using caching. |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 23.185.0.1
Server Software nginx
CDN CDN (MISS, MISS, MISS, MISS)
Compression gzip
🕐 🟡 Slow Response (1869 ms) Response time exceeds 1 second. Consider optimizing the server or using caching.
Performance
| DNS Lookup | 17.7 ms |
| TCP Connect | 18.5 ms |
| TLS Handshake | 6.1 ms |
| Time To First Byte (TTFB) | 1868.4 ms |
| Content Download | 0.7 ms |
| Total Response Time | 1869.1 ms |
DNS Lookup 17.7 ms
TCP Connect 18.5 ms
TLS Handshake 6.1 ms
Time To First Byte (TTFB) 1868.4 ms
Content Download 0.7 ms
Total Response Time 1869.1 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=31622400 |
| CSP | ✔ Configured |
| X-Frame-Options | ✔ DENY |
| X-Content-Type-Options | ✔ nosniff |
| Referrer Policy | same-origin |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=31622400
CSP ✔ Configured
X-Frame-Options ✔ DENY
X-Content-Type-Options ✔ nosniff
Referrer Policy same-origin
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | Home - Knopf Doubleday |
| Meta Description | The Knopf Doubleday Publishing Group is a storied leader in commercial and literary publishing and home to some of the most iconic authors in the world, including Nobel Laureates Toni Morrison, Kazuo Ishiguro, and Alice Munro; Prize-winners Robert Caro, Joan Didion, Yaa Gyasi, Jhumpa Lahiri, Cormac McCarthy, Michael Ondaatje, Tommy Orange, Patti Smith, Anne Tyler, and Colson Whitehead; and global bestsellers Dan Brown, John Grisham, Erin Morgenstern, and Jo Nesbo. |
| Canonical | https://knopfdoubleday.com/ |
| Robots Meta | index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1 |
| Open Graph Title | Home - Knopf Doubleday |
| Open Graph Description | The Knopf Doubleday Publishing Group is a storied leader in commercial and literary publishing and home to some of the most iconic authors in the world, including Nobel Laureates Toni Morrison, Kazuo Ishiguro, and Alice Munro; Prize-winners Robert Caro, Joan Didion, Yaa Gyasi, Jhumpa Lahiri, Cormac McCarthy, Michael Ondaatje, Tommy Orange, Patti Smith, Anne Tyler, and Colson Whitehead; and global bestsellers Dan Brown, John Grisham, Erin Morgenstern, and Jo Nesbo. |
| Twitter Card | summary_large_image |
Title Home - Knopf Doubleday
Meta Description The Knopf Doubleday Publishing Group is a storied leader in commercial and literary publishing and home to some of the most iconic authors in the world, including Nobel Laureates Toni Morrison, Kazuo Ishiguro, and Alice Munro; Prize-winners Robert Caro, Joan Didion, Yaa Gyasi, Jhumpa Lahiri, Cormac McCarthy, Michael Ondaatje, Tommy Orange, Patti Smith, Anne Tyler, and Colson Whitehead; and global bestsellers Dan Brown, John Grisham, Erin Morgenstern, and Jo Nesbo.
Canonical https://knopfdoubleday.com/
Robots Meta index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
Open Graph Title Home - Knopf Doubleday
Open Graph Description The Knopf Doubleday Publishing Group is a storied leader in commercial and literary publishing and home to some of the most iconic authors in the world, including Nobel Laureates Toni Morrison, Kazuo Ishiguro, and Alice Munro; Prize-winners Robert Caro, Joan Didion, Yaa Gyasi, Jhumpa Lahiri, Cormac McCarthy, Michael Ondaatje, Tommy Orange, Patti Smith, Anne Tyler, and Colson Whitehead; and global bestsellers Dan Brown, John Grisham, Erin Morgenstern, and Jo Nesbo.
Twitter Card summary_large_image
Detected Technologies
| Technology | WordPress React jQuery Google Analytics Nginx PHP |
Technology WordPress React jQuery Google Analytics Nginx PHP
HTTP Headers
| Cache-control
| no-store |
| Content-encoding
| gzip |
| Content-security-policy
| frame-ancestors 'self' |
| Content-type
| text/html; charset=UTF-8 |
| Link
| ; rel=shortlink |
| Pragma
| no-cache |
| Referrer-policy
| same-origin |
| Server
| nginx |
| Strict-transport-security
| max-age=31622400 |
| X-content-type-options
| nosniff |
| X-frame-options
| DENY |
| X-pantheon-styx-hostname
| styx-us-a-55f5b7b84b-n4n6w |
| X-permitted-cross-domain-policies
| none |
| X-styx-req-id
| 2d6dab6a-a098-11f1-b5cc-ba756b74649e |
| Age
| 0 |
| Accept-ranges
| bytes |
| Via
| 1.1 varnish, 1.1 varnish, 1.1 varnish, 1.1 varnish |
| Date
| Tue, 25 Aug 2026 15:18:10 GMT |
| X-served-by
| cache-chi-kmdw8640092-CHI, cache-par-lfpb1150083-PAR, cache-par-lfpg1960086-PAR, cache-par-lfpg1960086-PAR |
| X-cache
| MISS, MISS, MISS, MISS |
| X-cache-hits
| 0, 0, 0, 0 |
| X-timer
| S1787671088.218189,VS0,VE1842 |
| Vary
| Accept-Encoding, x-geo-country, Cookie, Cookie |
| Content-length
| 27831 |
Meta Tags
| Viewport | width=device-width, initial-scale=1 |
| Robots | index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1 |
| Description | The Knopf Doubleday Publishing Group is a storied leader in commercial and literary publishing and home to some of the most iconic authors in the world, including Nobel Laureates Toni Morrison, Kazuo Ishiguro, and Alice Munro; Prize-winners Robert Caro, Joan Didion, Yaa Gyasi, Jhumpa Lahiri, Cormac McCarthy, Michael Ondaatje, Tommy Orange, Patti Smith, Anne Tyler, and Colson Whitehead; and global bestsellers Dan Brown, John Grisham, Erin Morgenstern, and Jo Nesbo. |
| Article:modified_time | 2026-01-14T16:56:01+00:00 |
| Generator | WordPress 7.0.2 |
| Msapplication-TileImage |  |
Cache-control no-store
Content-encoding gzip
Content-security-policy frame-ancestors 'self'
Content-type text/html; charset=UTF-8
Link ; rel=shortlink
Pragma no-cache
Referrer-policy same-origin
Server nginx
Strict-transport-security max-age=31622400
X-content-type-options nosniff
X-frame-options DENY
X-pantheon-styx-hostname styx-us-a-55f5b7b84b-n4n6w
X-permitted-cross-domain-policies none
X-styx-req-id 2d6dab6a-a098-11f1-b5cc-ba756b74649e
Age 0
Accept-ranges bytes
Via 1.1 varnish, 1.1 varnish, 1.1 varnish, 1.1 varnish
Date Tue, 25 Aug 2026 15:18:10 GMT
X-served-by cache-chi-kmdw8640092-CHI, cache-par-lfpb1150083-PAR, cache-par-lfpg1960086-PAR, cache-par-lfpg1960086-PAR
X-cache MISS, MISS, MISS, MISS
X-cache-hits 0, 0, 0, 0
X-timer S1787671088.218189,VS0,VE1842
Vary Accept-Encoding, x-geo-country, Cookie, Cookie
Content-length 27831
