core.ac.uk
The world’s largest collection of open access research papers
Last scanned Jul 21, 2026, 12:33 PM · 1 view
Overall score
Fair
Top issues to fix
9 issues found · 3 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEOAdd exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Title longer than 60 characters
SEOShorten the title to under 60 characters so search results don't truncate it.
+3 more issues — details in the sections below.
Summary
The world’s largest collection of open access research papers. This website uses Next.js hosted on Cloudflare behind Cloudflare CDN. SEO is fair (65/100) and accessibility is excellent (90/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Title longer than 60 characters.
SEO
5 issue(s) found
Performance
140 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
Contact
Email, phone, and address published on this site's own pages.
Source: https://core.ac.uk/about#contact
Meta tags
- Title
- The world’s largest collection of open access research papers
- Description
- The world’s largest collection of open access research papers
- Canonical
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1, shrink-to-fit=no
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 104.21.20.56
- ASN
- AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX |
|
| TXT | — |
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Google Trust Services
- Subject
- core.ac.uk
- Valid from
- May 25, 2026
- Valid to
- Aug 23, 2026
- Days until expiry
- 33
- SAN domains
- core.ac.uk, *.core.ac.uk
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 1 cookie(s) observed
Content & assets
Headings
H1 0 · H2 8 · H3 15
Links
41 internal · 10 external · 0 broken
Images
44 total · 0 missing alt
Scripts / Styles
22 scripts · 4 stylesheets
JS / CSS size
1.1 KB · 0 B
Page size
89.6 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- Title longer than 60 characters
- Missing canonical link
- No H1 heading found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
Accessibility issues
- No H1 heading found
Team
People listed on this site's own team or about page.
Petr Knoth
Founder & Head of CORE
Vako Batiashvili
Middleware Engineer
Valeriy Budko
Full Stack Developer
Matteo Cancellieri
Lead Developer (Backend)
Ekaterine Chkhaidze
Front-end developer
Temo Chkhaidze
Backend engineer
Catherine Kuliavets
Community and Relationship Manager
Artem Minakov
Backend Engineer
Suchetha N.Kunnath
ML & Data Integration Engineer
Viktoriia Pavlenko
UX designer
Mologadi Ramushu
Communications and Dissemination Specialist
Illia Siedov
Data Engineer
Friedrich Summann
Operations & Data Ingestion Specialist
Beso Tsiklauri
Infrastructure Specialist
Andrew Vasiliev
System Administrator
Anton Zhuk
Back-end developer
Scan details
- Requested URL
- https://core.ac.uk
- Final URL
- https://core.ac.uk
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 139 ms
- HTML size
- 89.6 KB
- Redirect chain
- https://core.ac.uk
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Frequently asked questions
- What technology does core.ac.uk use?
- core.ac.uk is built with Next.js, Cloudflare Analytics.
- Is core.ac.uk secure (HTTPS)?
- Yes. core.ac.uk uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Aug 23, 2026.
- Who hosts core.ac.uk?
- core.ac.uk is hosted on Cloudflare, behind Cloudflare CDN.
- What is core.ac.uk's SEO score?
- core.ac.uk scored 65/100 for SEO in the latest analysis (fair).
- What is core.ac.uk's overall website score?
- core.ac.uk has an overall SiteGraph score of 79/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card