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 Oct 21, 2026.

Who hosts core.ac.uk?

Hosting provider information for core.ac.uk is not available yet.

What is core.ac.uk's SEO score?

core.ac.uk scored 55/100 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 76/100, combining SEO, performance, security, and accessibility.

Has core.ac.uk's score changed over time?

core.ac.uk's overall score has declined by 3 points (from 79 to 76) since Jul 21, 2026.

core.ac.uk

The world’s largest collection of open access research papers

Last scanned Jul 29, 2026, 6:00 PM · 9 views

Overall score

Fair

Summary

The world’s largest collection of open access research papers. This website uses Next.js behind Cloudflare CDN. SEO is fair (55/100) and accessibility is excellent (90/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Title longer than 60 characters.

The world’s largest collection of open access research papers

Top issues to fix

12 issues found · 3 high priority

Missing Strict-Transport-Security header
Security
Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEO
Add 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
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Title longer than 60 characters
SEO
Shorten the title to under 60 characters so search results don't truncate it.

+6 more issues — details in the sections below.

SEO

7 issue(s) found

100

Performance

154 ms

Security

HTTPS & header checks

Accessibility

1 issue(s) found

Score history

-3 overall since Jul 21, 2026

Overall: 76
SEO: 55
Security: 65
Performance: 100
Accessibility: 90

Organization

Company details published in this site's own structured data.

The world’s largest collection of open access research papers

X (Twitter)LinkedIn GitHub

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.

Next.js Cloudflare Analytics

Hosting & CDN

Hosting provider: —
CDN provider: Cloudflare
IP address: —
ASN: —

DNS records

Type	Value
A	—
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Google Trust Services
Subject: core.ac.uk
Valid from: Jul 23, 2026
Valid to: Oct 21, 2026
Days until expiry: 84
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 · 20 broken

Images

44 total · 0 missing alt

Scripts / Styles

22 scripts · 4 stylesheets

JS / CSS size

1.0 KB · 0 B

Page size

89.5 KB

Robots.txt & Sitemap

robots.txt: Not found
Disallow rules: 0
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

Title longer than 60 characters
Missing canonical link
No H1 heading found
No structured data (JSON-LD) found
Missing OpenGraph tags
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://core.ac.uk
Final URL: https://core.ac.uk
HTTP status: 200
HTTP version: HTTP/2
Response time: 153 ms
HTML size: 89.5 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 Oct 21, 2026.
Who hosts core.ac.uk?: Hosting provider information for core.ac.uk is not available yet.
What is core.ac.uk's SEO score?: core.ac.uk scored 55/100 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 76/100, combining SEO, performance, security, and accessibility.
Has core.ac.uk's score changed over time?: core.ac.uk's overall score has declined by 3 points (from 79 to 76) since Jul 21, 2026.

Top issues to fix

Score history

Organization

Meta tags

OpenGraph & Twitter Card

Technologies

Hosting & CDN

DNS records

TLS / SSL certificate

Security headers

Content & assets

Robots.txt & Sitemap

SEO issues

Accessibility issues

Scan details

Related websites

Frequently asked questions