Skip to content
An independent index of 1,651 brand websites — platforms, security, email and SEO Web indexAdvertiseContact
coolbrands
Find a brand
coolbrands
Get in touch
  1. Home
  2. Brands
  3. Media, music & games
  4. Macmillan Publishers
Media, music & gamesmacmillan.com

Macmillan Publishers — website check

International publishing company, founded 1843, based in London. Macmillan Publishers’s website is macmillan.com; we did not detect a known CMS or shop platform. It is delivered through Amazon CloudFront. Email from the domain is protected by an enforced DMARC policy.

Logo: Holtzbrinck Publishing Group · Public domain · Wikimedia Commons
52
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.

44
Security
80
Speed & delivery
63
Email & domain
36
SEO & markup
Official siteChecked 22 Oct 2026

About the brand

Founded1843
CountryUnited Kingdom
HeadquartersLondon
IndustryPublishing
Part ofHoltzbrinck Publishing Group
Official websitemacmillan.com

Facts: Wikidata (CC0).

Built with

CDNAmazon CloudFrontjsDelivr
CSS frameworksBootstrap
Hosting platformsAmazon S3

Hosting & delivery

ServerAmazonS3
Network (AS)Amazon Web Services
HTTP versionHTTP/3
TLSTLS 1.3
First response789 ms
Homepage weight4 KB
IPv6no

Email & domain

Mail providerGoogle Workspace
SPFyes
DMARC policyp=reject
BIMIno
DNSSECno
CAAno
Verified servicesAdobe (Admin Console), Anthropic, Apple (domain verification), Amazon SES / AWS, Dropbox, Meta Business (domain verification), Google Search Console, Have I Been Pwned

SEO & social

Title56 characters
Meta description0 characters
Canonicalno
Structured datano
Language versions0
Open Graphno

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

BrandWebsitePlatformSecuritySpeed & deliveryEmail & domainSEO & markupIndex
BBC www.bbc.co.uk — 1006088100 91
D. C. Thomson www.dcthomson.co.uk HubSpot CMS 891006391 85
London Review of Books www.lrb.co.uk — 100407591 82
Time Out www.timeout.com — 100807573 82
Classic FM www.classicfm.com — 892075100 79
LBC www.lbc.co.uk — 100207591 79
Smooth Radio www.smoothradio.com — 892075100 79
Capital www.capitalfm.com — 892063100 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.

Want your brand’s website benchmarked?

We compare your site with your category on security, speed, email and SEO — and fix what lags behind.

Get in touchServices