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Media, music & gameswww.penguin.co.uk
Penguin Books — website check
Imprint of Penguine Random House, founded 1935, based in London. Penguin Books’s website (www.penguin.co.uk) runs on WordPress. It is delivered through Cloudflare. Email from the domain is protected by an enforced DMARC policy.
70
Brand Web Indexout of 100
Share of 26 technical checks the site passes: security, speed, email and SEO. A measurement of the website — not a popularity ranking.
89
Security
40
Speed & delivery
63
Email & domain
73
SEO & markup
Official siteChecked 22 Oct 2026
About the brand
Founded1935
CountryUnited Kingdom
HeadquartersLondon
IndustryBook publishing
Official websitewww.penguin.co.uk
Facts: Wikidata (CC0).
Built with
CMSWordPress
Cookie consent (CMP)OneTrust
CDNCloudflare
Affiliate networksAwin
Web serversEnvoy
Hosting platformsWP Engine
Security & bot protectionCloudflare Bot Management
Hosting & delivery
Servercloudflare
Network (AS)Cloudflare
HTTP versionHTTP/3
TLSTLS 1.3
CertificateLet's Encrypt · valid until 2026-12-17
First response9,177 ms
Homepage weight506 KB
IPv6no
Email & domain
Mail providerMimecast
SPFyes
DMARC policyp=reject
BIMIno
DNSSECno
CAAno
Verified servicesMeta Business (domain verification), Google Search Console, Microsoft 365
SEO & social
Title35 characters
Meta description116 characters
Canonicalyes
Structured dataOrganization, PostalAddress, WebPage, WebSite
Language versions0
Open Graphyes
Social profiles linkedFacebook, Instagram, Linkedin, Tiktok, X, Youtube
AI crawlers & robots
AI crawlers blockednone
llms.txtno
ads.txtno
security.txtno
Checklist
Security
- HTTPS by default
- HSTS header
- TLS 1.3
- Content-Security-Policy
- X-Content-Type-Options
- Referrer-Policy
Speed & delivery
- HTTP/3
- IPv6
- First response under 1.5 s
- Homepage under 1.5 MB
Email & domain
- SPF record
- DMARC record
- DMARC enforced (quarantine / reject)
- BIMI logo record
- DNSSEC
- CAA record
SEO & markup
- Title tag 10–70 characters
- Meta description
- Canonical link
- Exactly one H1
- Structured data (JSON-LD)
- Open Graph title and image
- All images have alt text
- XML sitemap
- robots.txt
- security.txt
More media, music & games brands All
| Brand | Website | Platform | Security | Speed & delivery | Email & domain | SEO & markup | Index |
|---|---|---|---|---|---|---|---|
| BBC | www.bbc.co.uk | — | 100 | 60 | 88 | 100 | 91 |
| D. C. Thomson | www.dcthomson.co.uk | HubSpot CMS | 89 | 100 | 63 | 91 | 85 |
| London Review of Books | www.lrb.co.uk | — | 100 | 40 | 75 | 91 | 82 |
| Time Out | www.timeout.com | — | 100 | 80 | 75 | 73 | 82 |
| Classic FM | www.classicfm.com | — | 89 | 20 | 75 | 100 | 79 |
| LBC | www.lbc.co.uk | — | 100 | 20 | 75 | 91 | 79 |
| Smooth Radio | www.smoothradio.com | — | 89 | 20 | 75 | 100 | 79 |
| Capital | www.capitalfm.com | — | 89 | 20 | 63 | 100 | 76 |
Data from our own crawler: homepage, DNS, TLS and robots.txt of each brand’s official website. coolbrands.uk.com is an independent catalogue. It is not affiliated with Superbrands (UK) Ltd or the CoolBrands® awards programme, and does not publish their results.
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