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csl.com

Global Biotechnology Company | CSL

Last scanned Jul 27, 2026, 12:43 PM · 2 views

90

Overall score

Excellent

Summary

CSL consists of CSL Behring, CSL Seqirus and CSL Vifor. This website uses jQuery hosted on CSL-ASN-AS17033 - CSL Behring L.L.C, US. SEO is excellent (100/100) and accessibility is excellent (100/100). Security scores good (85/100) and performance good (75/100).

CSL consists of CSL Behring, CSL Seqirus and CSL Vifor. Together they help ensure people everywhere get the treatments they need.

United States
Hosted on CSL-ASN-AS17033 - CSL Behring L.L.C, US

Top issues to fix

3 issues found · 1 high priority

  • 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.

  • 2 cookies 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.

100

SEO

0 issue(s) found

75

Performance

1.94 s

85

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.

CSL consists of CSL Behring, CSL Seqirus and CSL Vifor. Together they help ensure people everywhere get the treatments they need.

LinkedInX (Twitter)YouTubeFacebookInstagram

Contact

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

Source: https://www.csl.com/contact

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

OpenGraph & Twitter Card

OpenGraph

og:title
CSL| Global Biotechnology Company
og:description
CSL consists of CSL Behring, CSL Seqirus and CSL Vifor. Together they help ensure people everywhere get the treatments they need.
og:type
website
og:url
https://www.csl.com/

Twitter Card

twitter:card
summary
twitter:title
CSL| Global Biotechnology Company
twitter:description
CSL consists of CSL Behring, CSL Seqirus and CSL Vifor. Together they help ensure people everywhere get the treatments they need.

Technologies

Detected frameworks, languages, and tools.

jQuery

Hosting & CDN

CDN provider
—
IP address
12.3.33.229
ASN
AS17033 (CSL-ASN-AS17033 - CSL Behring L.L.C, US)

DNS records

TypeValue
A
  • 12.3.33.229
AAAA—
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportNo

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
78
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 · 3 cookie(s) observed

Content & assets

Headings

H1 1 · H2 10 · H3 11

Links

90 internal · 11 external · 0 broken

Images

29 total · 0 missing alt

Scripts / Styles

12 scripts · 3 stylesheets

JS / CSS size

1.8 MB · 3.9 KB

Page size

250 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
9
sitemap.xml
Found
URLs in sitemap
1117

SEO issues

No SEO issues detected.

Accessibility issues

No accessibility issues detected.

Careers

View careers page
RoleLocationPosted
Inclusion and Belonging——
How CSL Supports Your Well-being——
Early Careers at CSL——
Life at CSL——
Explore Careers at CSL——
People Powering Science——
Internships at CSL——
Graduate Rotational Programs at CSL——

Scan details

Requested URL
https://csl.com
Final URL
https://www.csl.com/
HTTP status
200
HTTP version
HTTP/1.1
Response time
1.93 s
HTML size
250 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?
csl.com is hosted on CSL-ASN-AS17033 - CSL Behring L.L.C, US.
What is csl.com's SEO score?
csl.com scored 100/100 for SEO in the latest analysis (excellent).
What is csl.com's overall website score?
csl.com has an overall SiteGraph score of 90/100, combining SEO, performance, security, and accessibility.
Is csl.com hiring?
Yes. csl.com has 8 open roles listed on their careers page.