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- Heinemann
Media, music & gameswww.heinemann.com
Heinemann — website check
founded 1890, based in London. Heinemann’s website (www.heinemann.com) runs on ASP.NET. It is delivered through cdnjs. There is no DMARC record, so the domain can be spoofed in email.
45
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.
78
Security
40
Speed & delivery
13
Email & domain
45
SEO & markup
Official siteChecked 23 Oct 2026
About the brand
Facts: Wikidata (CC0).
Built with
Tag managersGoogle Tag Manager
Web frameworksASP.NET
A/B testingAB Tasty
Web serversnginx
Security & bot protectionImperva (Incapsula)
Web fontsFont AwesomeGoogle Fonts
VideoWistia
Hosting & delivery
Servernginx
Network (AS)Imperva
HTTP versionHTTP/3
TLSTLS 1.3
CertificateGlobalSign nv-sa · valid until 2027-01-11
First response2,676 ms
Homepage weight68 KB
IPv6no
Email & domain
Mail providerMimecast
SPFyes
DMARC policyno
BIMIno
DNSSECno
CAAno
Verified servicesAdobe (Admin Console), Anthropic, Atlassian Cloud, Canva, DocuSign, Meta Business (domain verification), GlobalSign, Google Search Console
SEO & social
Title121 characters
Meta description151 characters
Canonicalno
Structured datano
Language versions0
Open Graphno
Social profiles linkedFacebook, Instagram, Linkedin, 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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