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reactome.org

Home - Reactome Pathway Database

Last scanned Jul 26, 2026, 5:47 AM

84

Overall score

Great

Summary

Reactome is pathway database which provides intuitive bioinformatics tools for the visualisation, interpretation and analysis of pathway knowledge. This website uses Google Analytics hosted on Cloudflare behind Cloudflare CDN. SEO is good (85/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (90/100). Top issue: Missing canonical link.

Reactome is pathway database which provides intuitive bioinformatics tools for the visualisation, interpretation and analysis of pathway knowledge.

United States
Hosted on Cloudflare

Top issues to fix

9 issues found · 2 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.

  • 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.

  • 1 cookie without Secure/HttpOnly flags

    Security

    Set Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.

  • Missing canonical link

    SEO

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

+3 more issues — details in the sections below.

85

SEO

3 issue(s) found

90

Performance

2.17 s

65

Security

HTTPS & header checks

100

Accessibility

0 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.

Reactome is pathway database which provides intuitive bioinformatics tools for the visualisation, interpretation and analysis of pathway knowledge.

Contact

Email, phone, and address published on this site's own pages.

Meta tags

Title
Home - Reactome Pathway Database
Description
Reactome is pathway database which provides intuitive bioinformatics tools for the visualisation, interpretation and analysis of pathway knowledge.
Canonical
Language
en-gb
Charset
utf-8
Viewport
width=device-width, initial-scale=1, maximum-scale=1
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.

Hosting & CDN

Hosting provider
Cloudflare
CDN provider
Cloudflare
IP address
172.67.186.47
ASN
AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)

DNS records

TypeValue
A
  • 172.67.186.47
  • 104.21.19.129
AAAA
  • 2606:4700:3031::6815:1381
  • 2606:4700:3037::ac43:ba2f
MX
  • smtp.google.com
TXT
  • OSSRH-50041
  • google-site-verification=ZsHpxuW3NfxlesV4RitGSCxECzkDnax6QaYi_htXrBQ
  • v=spf1 include:_spf.google.com ~all
NS
  • ishaan.ns.cloudflare.com
  • oaklyn.ns.cloudflare.com
CAA
CNAME
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
reactome.org
Valid from
Jul 24, 2026
Valid to
Oct 22, 2026
Days until expiry
88
SAN domains
*.reactome.org, reactome.org

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 2 · H2 25 · H3 8

Links

82 internal · 9 external · 1 broken

Images

7 total · 1 missing alt

Scripts / Styles

23 scripts · 17 stylesheets

JS / CSS size

7.5 KB · 84.8 KB

Page size

90.5 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
45
sitemap.xml
Found
URLs in sitemap
-1

SEO issues

  • Missing canonical link
  • Multiple H1 headings found
  • Missing OpenGraph tags

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://reactome.org
Final URL
https://reactome.org
HTTP status
200
HTTP version
HTTP/2
Response time
2.17 s
HTML size
90.5 KB
Redirect chain
https://reactome.org

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Frequently asked questions

What technology does reactome.org use?
reactome.org is built with Joomla, Bootstrap, jQuery, Google Analytics, Cloudflare Analytics.
Is reactome.org secure (HTTPS)?
Yes. reactome.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 22, 2026.
Who hosts reactome.org?
reactome.org is hosted on Cloudflare, behind Cloudflare CDN.
What is reactome.org's SEO score?
reactome.org scored 85/100 for SEO in the latest analysis (great).
What is reactome.org's overall website score?
reactome.org has an overall SiteGraph score of 84/100, combining SEO, performance, security, and accessibility.