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Media, music & gamesharpercollins.co.uk

HarperCollins — website check

Anglo-American publishing house, founded 1817, based in 195 Broadway. HarperCollins’s website (harpercollins.co.uk) runs on Shopify. It is delivered through cdnjs. Email from the domain is protected by an enforced DMARC policy.

Logo: Original uploader was Stepshep at en.wikipedia · Public domain · Wikimedia Commons
73
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
82
SEO & markup
Official siteChecked 22 Oct 2026

About the brand

Founded1817
CountryUnited States
Headquarters195 Broadway
IndustryPublishing
Part ofNews Corp
Official websiteharpercollins.co.uk

Facts: Wikidata (CC0).

Built with

E-commerce platformsShopify
Cookie consent (CMP)OneTrust
Web frameworksVue.js
CSS frameworksBootstrap
JavaScript librariesjQuerySwiperVite
PaymentsShop Pay

Hosting & delivery

Servercloudflare
Network (AS)Cloudflare
HTTP versionHTTP/3
TLSTLS 1.3
CertificateLet's Encrypt · valid until 2026-12-28
First response6,017 ms
Homepage weight762 KB
IPv6no

Email & domain

Mail providerProofpoint
SPFyes
DMARC policyp=reject
BIMIno
DNSSECno
CAAno
Verified servicesAdobe (Admin Console), Atlassian Cloud, Amazon SES / AWS, Cloudflare (Zero Trust / Pages), DocuSign, Dropbox, Google Search Console, Have I Been Pwned

SEO & social

Title62 characters
Meta description276 characters
Canonicalyes
Structured dataOrganization, PostalAddress, SearchAction, WebSite
Language versions0
Open Graphyes
Social profiles linkedFacebook, Instagram, Pinterest, Tiktok, X

AI crawlers & robots

AI crawlers blockednone
llms.txtyes
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

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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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