reactome.org
Home - Reactome Pathway Database
Last scanned Aug 3, 2026, 6:00 PM · 16 views
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 good (85/100). Security scores fair (65/100) and performance excellent (100/100). 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
10 issues found · 2 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.
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.
1 cookie without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
+4 more issues — details in the sections below.
SEO
3 issue(s) found
Performance
488 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Score history
0 overall since Jul 26, 2026
- Overall
- 84
- SEO
- 85
- Security
- 65
- Performance
- 100
- Accessibility
- 85
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.
- help@reactome.org
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
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 104.21.19.129
- 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
- Let's Encrypt
- Subject
- reactome.org
- Valid from
- Jul 24, 2026
- Valid to
- Oct 22, 2026
- Days until expiry
- 80
- 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
80 internal · 12 external · 1 broken
Images
9 total · 3 missing alt
Scripts / Styles
22 scripts · 17 stylesheets
JS / CSS size
7.5 KB · 55.5 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
- More than 20% of images are missing alt text
Scan details
- Requested URL
- https://reactome.org
- Final URL
- https://reactome.org
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 487 ms
- 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.
- Has reactome.org's score changed over time?
- reactome.org's overall score has stayed steady at 84/100 since Jul 26, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card