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regeneron.com

https://regeneron.com· First analyzed 26 Apr 2026· Updated 26 Apr 2026
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regeneron.com
Desktop screenshot of regeneron.com
Mobile screenshot of regeneron.com
Mobile

Sponsored

Hosting Provider

Interliant

IP Address

209.235.68.11

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Brooklyn, United States

ASN

AS14135

Organization

Interliant

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns5.markmonitor.com.ns6.markmonitor.com.ns7.markmonitor.com.ns1.markmonitor.com.+3 more

Performance

100

Core Web Vitals

Weight

First Contentful Paint
510 ms10%
Speed Index
663 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.3 MB
62 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Kentico

Technology Stack

8 Technologies Detected

Libraries

1
jQueryv3.5.1

Other

1
Lottie

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

Analytics

1
Google Analytics

Tag Managers

1
Google Tag Manager

CDN

1
Cloudflare

Frameworks

1
ASP.NET

SEO Analysis

B75/100
20
8
0
Meta Tags14/15
Content10/12
Headings8/8
Technical19/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social3/5
Freshness2/4
Mobile4/4
Indexability3/3
R
regeneron.comregeneron.com

Regeneron | Pushing the Bounds of Science

Discover how Regeneron (NASDAQ: REGN) harmonizes biology and technology to create life-changing medicines. Join our team and explore clinical trials.

Title Length41 chars

Recommended: 50-60 chars (~247px / 580px)

Description Length149 chars

Recommended: 120-160 chars

Issues (0)

    8 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    187 URLs

    robots.txt

    36 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    12/100
    Poor
    4 13 1

    This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

    Sponsored

    AI & LLM Readiness

    D54/100
    Bot Access
    20/25
    Machine Read.
    13/25
    Schema Data
    6/25
    Citation
    15/25

    AI Bot Access

    14/14 accessible
    AI Search
    OAI-SearchBot
    PerplexityBot
    Claude-SearchBot
    Gemini-Deep-Research
    DuckAssistBot
    Training
    GPTBot
    ClaudeBot
    Google-Extended
    Meta-ExternalAgent
    Bytespiderinfo
    Amazonbot
    Applebot-Extended
    CCBotinfo
    Fetch
    ChatGPT-User

    Machine Readability

    llms.txt
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    navheader/footer
    Text ratio:5%
    Words:832
    Token eff.:Optimal
    Sections/1K:9.6
    Depth:2/5

    Structured Data

    1 JSON-LD
    Organization×1.1VideoObjectBreadcrumbList
    sameAs entity links

    Citation Readiness

    Opening Summary10w
    Descriptive Headingsavg 5w
    Canonical URL
    Open Graph3/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (7)
    AI readiness recommendation preview...
    Upgrade to view recommendations

    Sponsored

    Accessibility

    WCAG 2.1 Compliance

    Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.
    A
    87/100
    14
    Passed
    0
    Critical
    1
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    20/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    15/15
    Verifies form fields have labels, error messages are clear, and inputs are properly associated.
    Color & Contrast
    15/15
    Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.
    Keyboard & Focus
    13/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    4/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

    Carbon Footprint

    SWDM v4 · Eco-Score

    Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.
    28/100
    E
    293 mg
    CO₂e / view
    2.3 MB
    Page Weight
    30%
    Cleaner Than
    New Visitor
    335 mg
    vs
    Returning (cached)
    167 mg
    Annual (10K/mo)
    35.1 kg
    Emission Segments
    Data Center
    65 mg
    Network
    70 mg
    Device
    157 mg
    Resource Breakdown
    JavaScript
    317.9 KB
    Images
    1014.5 KB
    CSS
    1019.7 KB
    Fonts
    2.6 KB
    HTML
    11.7 KB
    Other
    1.3 KB
    Green Hosting Not Verified
    Interliant
    5 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    A

    Security Score

    86%Very Good
    Interactive

    HTTPS

    WAF

    168d

    Certificate Details

    Type

    Organization Validated (OV)

    Certificate Authority

    Sectigo Limited

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    27.03.2026

    Valid Until

    11.10.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    regeneron.comwww.regeneron.com

    SHA-256 Fingerprint

    B5:23:B1:53:5B:F4:82:D9:C5:C2:99:D6:C7:65:37:6D:C3:F3:0F:D0...

    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🔵 1 Days(public, max-age=86400, must-revalidate)
    cf-cache-status
    DYNAMIC
    cf-ray🇮🇹 Milan
    9f28b34b3e130df1-MXP
    content-encoding
    📦 Gzip(gzip)
    content-security-policy
    script-src 'self' 'unsafe-inline' code.jquery.com connect.fa...
    content-type
    text/html; charset=utf-8
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    100

    SPF
    DKIM
    DMARC

    DMARC Policy

    Reject (Strictest)

    MX Records (2)

    mxb-002cca01.gslb.pphosted.com
    mxa-002cca01.gslb.pphosted.com

    Domain Information

    regeneron.com

    Domain Age
    28y 9m

    Created

    10.07.1997

    Expires

    09.07.2030

    Last Updated

    21.11.2025

    Registrar

    MarkMonitor Inc.

    DNSSEC
    Not Enabled

    Privacy & Compliance

    OneTrust

    Cookie Consent Banner
    OneTrust
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: OneTrust
    Privacy policy page linked

    Mobile Compatibility

    Viewport & Responsive Test

    Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.
    D
    52/100
    Mobile Friendly1 breakpoint
    Viewport Meta
    The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.
    Responsive Design
    Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.
    Touch Icons
    Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.
    Readable Font Size
    Base font size should be at least 16px on mobile to ensure text is readable without zooming.
    Relative Units
    Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.
    No H-Scroll Risk
    No elements wider than the viewport that would cause horizontal scrolling on mobile devices.
    Tap Targets OK
    Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.
    No Fixed Widths
    No elements with fixed pixel widths that could overflow on smaller screens and break the layout.
    Viewport
    width=device-width
    3 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Barlow Condensed + Roboto

    WCAG AA
    69/100
    Readability
    /30
    20/30

    18px · LH 1.33

    Hierarchy
    /20
    20/20

    4x ratio · ✓ H1→H6

    WCAG
    /25
    15/25

    4.97:1 min contrast

    Performance
    /25
    14/25

    System fonts

    Heading Font

    Barlow Condensed

    Sans72px

    Body Font

    Roboto

    Sans18px

    Contrast Ratio

    4.97:1

    WCAG AA (≥4.5:1)

    Reading Comfort

    ~36 CPL

    Narrow lines
    72px
    h1
    86px
    h2
    40px
    h3
    18px
    p

    ✅ Excellent readability: 18px body text is ideal for all devices.

    ⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

    ❌ Very complex text: Flesch score 29/100. Consider shorter sentences and simpler words.

    ✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.0:1).

    ✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

    ✅ Strong hierarchy: Headlines are 4.0x larger than body text.

    GGoogle FontsBuy on MyFontsFlesch 29

    Color Palette

    8 unique colors
    Light
    #eff0f1
    Background· 50.4%
    #072b5b
    Primary· 13.100000000000001%
    #5c6e9b
    Secondary· 7%
    #041e46
    Accent· 6.3%
    #3a5a8f
    Secondary· 5.6%
    #343b6d
    Secondary· 5.2%
    #a2aab8
    Secondary· 4.9%

    Business & Marketing Stack

    3 Tools Detected

    Advanced

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Privacy & Cookies

    1
    OneTrustEnterprise

    Cookie consent and privacy compliance tools

    2

    Categories

    3

    Total Tools

    1

    Enterprise

    0

    Mid-Market

    Assessment: Well-developed marketing technology stack

    Sponsored

    Scripts & Styles

    11 Resources

    8
    Scripts
    3
    Styles
    1
    Async
    0
    Defer

    Top Script Sources

    local(5)googletagmanager.com(1)code.jquery.com(1)cdn.cookielaw.org(1)

    Website Identity

    Home

    MedicalWebPage

    Discover how Regeneron (NASDAQ: REGN) harmonizes biology and technology to create lifechanging medicines. Join our team and explore clinical trials.

    www.regeneron.com
    28 years old
    Location detected: 🇺🇸 United Statesvia ip
    MarkMonitor Inc.en

    Sponsored

    Last analyzed: 26 Apr 2026 at 21:32

    Historical Analysis & Change Tracking