csl.com
Global Biotechnology Company | CSL
Last scanned Aug 4, 2026, 3:00 PM · 10 views
Overall score
Excellent
Summary
CSL consists of CSL Behring, CSL Seqirus and CSL Vifor. This website uses jQuery. SEO is excellent (90/100) and accessibility is excellent (100/100). Security scores good (85/100) and performance excellent (90/100). Top issue: robots.txt not found.
CSL consists of CSL Behring, CSL Seqirus and CSL Vifor. Together they help ensure people everywhere get the treatments they need.
Top issues to fix
6 issues found · 1 high priority
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.
3 cookies without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
20 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
2 issue(s) found
Performance
1.65 s
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
+1 overall since Jul 27, 2026
- Overall
- 91
- SEO
- 90
- Security
- 85
- Performance
- 90
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
CSL consists of CSL Behring, CSL Seqirus and CSL Vifor. Together they help ensure people everywhere get the treatments they need.
Meta tags
- Title
- Global Biotechnology Company | CSL
- Description
- CSL consists of CSL Behring, CSL Seqirus and CSL Vifor. Together they help ensure people everywhere get the treatments they need.
- Canonical
- https://www.csl.com/
- Language
- en-US
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1.0 user-scalable=yes
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- —
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.2
- Issuer
- DigiCert Inc
- Subject
- www.csl.com
- Valid from
- Mar 29, 2026
- Valid to
- Oct 13, 2026
- Days until expiry
- 70
- SAN domains
- www.csl.com, csl.com, employeecloud.csl.com, mediakop.csl.com, privacyinfo.csl.com, siteaccess.csl.com
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: none · 4 cookie(s) observed
Content & assets
Headings
H1 1 · H2 10 · H3 11
Links
89 internal · 12 external · 20 broken
Images
31 total · 0 missing alt
Scripts / Styles
12 scripts · 3 stylesheets
JS / CSS size
5.1 KB · 3.9 KB
Page size
249 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://csl.com
- Final URL
- https://www.csl.com/
- HTTP status
- 200
- HTTP version
- HTTP/1.1
- Response time
- 1.65 s
- HTML size
- 249 KB
- Redirect chain
- https://csl.com → https://www.csl.com/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does csl.com use?
- csl.com is built with jQuery.
- Is csl.com secure (HTTPS)?
- Yes. csl.com uses TLS 1.2 with a certificate issued by DigiCert Inc, valid until Oct 13, 2026.
- Who hosts csl.com?
- Hosting provider information for csl.com is not available yet.
- What is csl.com's SEO score?
- csl.com scored 90/100 for SEO in the latest analysis (excellent).
- What is csl.com's overall website score?
- csl.com has an overall SiteGraph score of 91/100, combining SEO, performance, security, and accessibility.
- Has csl.com's score changed over time?
- csl.com's overall score has improved by 1 point (from 90 to 91) since Jul 27, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card