bl.uk
The British Library - the national Library of the UK
Last scanned Jul 24, 2026, 8:25 PM · 1 view
Overall score
Excellent
Summary
Visit the national library of the UK. This website uses Next.js hosted on Azure. SEO is good (85/100) and accessibility is excellent (100/100). Security scores excellent (100/100) and performance good (85/100). Top issue: Multiple H1 headings found.
Visit the national library of the UK. Explore our buildings, study, meet friends, attend an event and get free access to over 170 million items. Join us.
- United States
- Hosted on Azure
Top issues to fix
2 issues found
Multiple H1 headings found
SEOKeep a single H1 per page and demote the others to H2/H3.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
SEO
2 issue(s) found
Performance
599 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Visit the national library of the UK. Explore our buildings, study, meet friends, attend an event and get free access to over 170 million items. Join us.
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- The British Library - the national Library of the UK
- Description
- Visit the national library of the UK. Explore our buildings, study, meet friends, attend an event and get free access to over 170 million items. Join us.
- Canonical
- https://www.bl.uk
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- index
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Azure
- CDN provider
- —
- IP address
- 150.171.109.130
- ASN
- AS8075 (MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME |
|
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- DigiCert Inc
- Subject
- www.bl.uk
- Valid from
- Jun 12, 2026
- Valid to
- Dec 12, 2026
- Days until expiry
- 141
- SAN domains
- www.bl.uk
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyEnabled
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 2 · H2 4 · H3 7
Links
31 internal · 15 external · 0 broken
Images
5 total · 0 missing alt
Scripts / Styles
65 scripts · 3 stylesheets
JS / CSS size
1.7 MB · 148 KB
Page size
185 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Found
- URLs in sitemap
- 574
SEO issues
- Multiple H1 headings found
- No structured data (JSON-LD) found
Accessibility issues
No accessibility issues detected.
Careers
This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.
Scan details
- Requested URL
- https://bl.uk
- Final URL
- https://www.bl.uk/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 596 ms
- HTML size
- 185 KB
- Redirect chain
- https://bl.uk → https://www.bl.uk/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does bl.uk use?
- bl.uk is built with Next.js, Google Analytics.
- Is bl.uk secure (HTTPS)?
- Yes. bl.uk uses TLS 1.3 with a certificate issued by DigiCert Inc, valid until Dec 12, 2026.
- Who hosts bl.uk?
- bl.uk is hosted on Azure.
- What is bl.uk's SEO score?
- bl.uk scored 85/100 for SEO in the latest analysis (great).
- What is bl.uk's overall website score?
- bl.uk has an overall SiteGraph score of 92/100, combining SEO, performance, security, and accessibility.
- Is bl.uk hiring?
- bl.uk has a careers page; check it directly for current openings.
OpenGraph & Twitter Card
OpenGraph
Twitter Card