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citeulike.org

CiteULike: Everyone's library

Last scanned Jul 26, 2026, 5:47 AM

87

Overall score

Great

Summary

citeulike. This website is hosted on Cloudflare. SEO is fair (70/100) and accessibility is good (85/100). Security scores excellent (95/100) and performance excellent (100/100). Top issue: Missing canonical link.

citeulike

United States
Hosted on Cloudflare

Top issues to fix

6 issues found · 2 high priority

  • 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 viewport meta tag

    Accessibility

    Add <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.

  • Missing X-Content-Type-Options header

    Security

    Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.

  • Missing canonical link

    SEO

    Add <link rel="canonical"> so search engines know which URL variant to index.

  • No structured data (JSON-LD) found

    SEO

    Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

  • Missing OpenGraph tags

    SEO

    Add og:title/og:description/og:image so shared links render a proper preview card.

70

SEO

4 issue(s) found

100

Performance

13 ms

95

Security

HTTPS & header checks

85

Accessibility

2 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

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

citeulike

Meta tags

Title
CiteULike: Everyone's library
Description
citeulike
Canonical
Language
en
Charset
utf-8
Viewport
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

twitter:card
—
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

No technologies detected.

Hosting & CDN

Hosting provider
Cloudflare
CDN provider
Cloudflare
IP address
104.26.14.146
ASN
AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)

DNS records

TypeValue
A
  • 104.26.14.146
  • 172.67.74.222
  • 104.26.15.146
AAAA
  • 2606:4700:20::681a:e92
  • 2606:4700:20::681a:f92
  • 2606:4700:20::ac43:4ade
MX
  • route3.mx.cloudflare.net
  • route2.mx.cloudflare.net
  • route1.mx.cloudflare.net
TXT
  • v=spf1 include:_spf.mx.cloudflare.net ~all
  • google-site-verification=w-3QuLdPVchQxy46wzGg_7OBoLiTp5PTMG6Hoib6Vqo
NS
  • kareem.ns.cloudflare.com
  • tori.ns.cloudflare.com
CAA
  • 0 issuewild "pki.goog; cansignhttpexchanges=yes"
  • 0 issuewild "digicert.com; cansignhttpexchanges=yes"
  • 0 issue "ssl.com"
  • 0 issue "pki.goog; cansignhttpexchanges=yes"
  • 0 issue "comodoca.com"
  • 0 issuewild "letsencrypt.org"
  • 0 issuewild "comodoca.com"
  • 0 issuewild "ssl.com"
  • 0 issue "letsencrypt.org"
  • 0 issue "digicert.com; cansignhttpexchanges=yes"
CNAME—
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Google Trust Services
Subject
citeulike.org
Valid from
Jul 20, 2026
Valid to
Oct 18, 2026
Days until expiry
83
SAN domains
citeulike.org, *.citeulike.org

Security headers

  • Strict-Transport-SecurityEnabled
  • Content-Security-PolicyEnabled
  • X-Frame-OptionsEnabled
  • X-Content-Type-OptionsMissing
  • Referrer-PolicyEnabled
  • Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 0 · H3 0

Links

0 internal · 0 external · 0 broken

Images

12 total · 0 missing alt

Scripts / Styles

0 scripts · 1 stylesheets

JS / CSS size

0 B · 0 B

Page size

5.3 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
0
sitemap.xml
Found
URLs in sitemap
1

SEO issues

  • Missing canonical link
  • No H1 heading found
  • No structured data (JSON-LD) found
  • Missing OpenGraph tags

Accessibility issues

  • No H1 heading found
  • Missing viewport meta tag

Scan details

Requested URL
https://citeulike.org
Final URL
https://citeulike.org
HTTP status
200
HTTP version
HTTP/2
Response time
13 ms
HTML size
5.3 KB
Redirect chain
https://citeulike.org

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does citeulike.org use?
We did not detect any specific technologies for citeulike.org in the latest scan.
Is citeulike.org secure (HTTPS)?
Yes. citeulike.org uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 18, 2026.
Who hosts citeulike.org?
citeulike.org is hosted on Cloudflare, behind Cloudflare CDN.
What is citeulike.org's SEO score?
citeulike.org scored 70/100 for SEO in the latest analysis (fair).
What is citeulike.org's overall website score?
citeulike.org has an overall SiteGraph score of 87/100, combining SEO, performance, security, and accessibility.