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chanzuckerberg.com

https://chanzuckerberg.com· First analyzed 29 Apr 2026· Updated 29 Apr 2026
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chanzuckerberg.com
Desktop screenshot of chanzuckerberg.com
Mobile screenshot of chanzuckerberg.com
Mobile

Sponsored

Hosting Provider

Automattic, Inc

IP Address

192.0.66.2

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 San Francisco, United States

ASN

AS2635

Server

Nginx

CDN

CDN

Nameservers

ns-1208.awsdns-23.org.ns-1853.awsdns-39.co.uk.ns-344.awsdns-43.com.ns-854.awsdns-42.net.

Performance

97

Core Web Vitals

Weight

First Contentful Paint
1.0 s10%
Speed Index
1.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
3.1 MB
43 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPressv6.9.4
cms
Chan Zuckerbergv1.0Custom
by Upperquad

Technology Stack

11 Technologies Detected

Libraries

2
jQuery
jQuery UI

Fonts

2
Adobe Fonts (Typekit)Adobe Fonts

Plugins

2
Wp Simple Booking Calendar Premium
Yoast SEO

CSS Frameworks

1
Tailwind CSS

Analytics

1
Google Analytics

Tag Managers

1
Google Tag Manager

Marketing

1
HubSpot

Web Servers

1
Nginx

SEO Analysis

A84/100
24
5
0
Meta Tags12/15
Content11/12
Headings8/8
Technical24/25
E-E-A-T2/7
Images3/7
Links4/5
URL5/5
Social5/5
Freshness4/4
Mobile3/4
Indexability3/3
C
chanzuckerberg.comchanzuckerberg.com

Chan Zuckerberg Initiative - Our Work

The Chan Zuckerberg Initiative tackles society’s toughest challenges: eradicating disease, improving education, and addressing local communities.

Title Length37 chars

Recommended: 50-60 chars (~226px / 580px)

Description Length145 chars

Recommended: 120-160 chars

Issues (0)

    5 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    26 URLs

    26 sub-sitemaps

    robots.txt

    3 rules

    Sitemap reference found

    Allows all crawlers

    Local SEO

    Local Search Readiness

    15/100
    Poor
    4 13

    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.
    11/25
    Schema Data
    8/25
    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:4%
    Words:530
    Token eff.:Optimal
    Sections/1K:13.2
    Depth:2/5

    Structured Data

    4 JSON-LD
    Organization×1.1WebSiteBreadcrumbListSearchAction
    sameAs entity links

    Citation Readiness

    Opening Summary112w
    Descriptive Headingsavg 2.7w
    Canonical URL
    Open Graph3/3
    Twitter Card3/3
    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
    15
    Passed
    1
    Critical
    1
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    17/20
    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
    15/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    5/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    1 recommendation
    • •Accessibility recommendation preview...
    Upgrade to view recommendations

    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.
    27/100
    F
    393 mg
    CO₂e / view
    3.1 MB
    Page Weight
    30%
    Cleaner Than
    New Visitor
    449 mg
    vs
    Returning (cached)
    225 mg
    Annual (10K/mo)
    47.2 kg
    Emission Segments
    Data Center
    88 mg
    Network
    94 mg
    Device
    211 mg
    Resource Breakdown
    JavaScript
    321.2 KB
    Images
    2.2 MB
    CSS
    329.7 KB
    HTML
    11.9 KB
    Other
    263.7 KB
    Green Hosting Not Verified
    Automattic, Inc
    5 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    C

    Security Score

    66%Fair
    Interactive

    HTTPS

    No WAF

    57d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    ECDSA (secp256r1) (256 bit)

    Signature

    ECDSA with SHA-384

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    27.03.2026

    Valid Until

    25.06.2026

    Subject Alternative Names (1)

    chanzuckerberg.com

    SHA-256 Fingerprint

    BB:E9:3B:1E:27:1B:92:62:4A:FC:30:3E:99:58:06:EF:81:02:A9:F6...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    accept-ranges
    bytes
    cache-control
    🟡 300s(max-age=300, must-revalidate)
    content-encoding
    ⚡ Brotli(br)
    content-security-policy
    base-uri 'none'; connect-src 'self' https://*.algolia.net ...
    content-type
    text/html; charset=UTF-8
    date
    Wed, 29 Apr 2026 12:19:49 GMT
    Good Warning Issue

    Email Infrastructure

    Google Workspace

    Score

    70

    SPF
    DKIM
    DMARC

    DMARC Policy

    Reject (Strictest)

    MX Records (5)

    alt2.aspmx.l.google.com
    alt4.aspmx.l.google.com
    aspmx.l.google.com
    alt1.aspmx.l.google.com

    +1 more

    Domain Information

    chanzuckerberg.com

    Domain Age
    10y 5m

    Created

    18.11.2015

    Expires

    18.11.2026

    Last Updated

    17.10.2024

    Registrar

    MarkMonitor Inc.

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookiebot

    Cookie Consent Banner
    Cookiebot
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: Cookiebot
    Privacy policy page linked
    Data Protection Officer mentioned

    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.
    A
    83/100
    Mobile Friendly3 breakpoints
    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, initial-scale=1

    Typography & Readability

    Amiri + hk_groteskmedium

    WCAG AA
    67/100
    Readability
    /30
    21/30

    16px · LH 1.50

    Hierarchy
    /20
    15/20

    5x ratio

    WCAG
    /25
    20/25

    4.71:1 min contrast

    Performance
    /25
    11/25

    3 fonts · 3 req

    Heading Font

    Amiri

    Sans80px

    Body Font

    hk_groteskmedium

    Sans16px

    Contrast Ratio

    4.71:1

    WCAG AA (≥4.5:1)

    Reading Comfort

    ~39 CPL

    Narrow lines
    80px
    h1
    60px
    h2
    20px
    h3
    44px
    h4
    16px
    p
    Minor Second
    Scale

    ✅ Excellent readability: 16px body text is ideal for all devices.

    ✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

    ⚠️ Hard to read: Flesch score 34/100. Simplify sentences for wider reach.

    ✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 4.7:1).

    ⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

    ✅ Strong hierarchy: Headlines are 5.0x larger than body text.

    AAdobe FontsBuy on MyFontsFluid TypeFlesch 34

    Color Palette

    8 unique colors
    6.93:1 AA Light
    #ffffff
    Background· 73.30000000000001%
    #665656
    Secondary· 3.4%
    #101926
    Primary· 6.4%
    #bea6a0
    Secondary· 3.6%
    #e9eaed
    Secondary· 2.8%
    #5b2c2d
    Secondary· 2.3%

    Business & Marketing Stack

    4 Tools Detected

    Enterprise

    CRM Systems

    1
    HubSpotMid-Market

    Customer Relationship Management platforms

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Privacy & Cookies

    1
    OneTrustEnterprise

    Cookie consent and privacy compliance tools

    3

    Categories

    4

    Total Tools

    1

    Enterprise

    1

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Sponsored

    Scripts & Styles

    15 Resources

    12
    Scripts
    3
    Styles
    2
    Async
    1
    Defer

    Top Script Sources

    chanzuckerberg.com(5)googletagmanager.com(1)js.hsforms.net(1)browser.sentry-cdn.com(1)config.datas3ntinel.com(1)

    Website Identity

    Chan Zuckerberg Initiative

    Chan Zuckerberg Initiative

    Organization

    The Chan Zuckerberg Initiative tackles society’s toughest challenges: eradicating disease, improving education, and addressing local communities.

    chanzuckerberg.com/
    10 years old
    Location detected: 🇺🇸 United Statesvia ip
    MarkMonitor Inc.📧 Google Workspaceen-US

    Sponsored

    Last analyzed: 29 Apr 2026 at 12:20

    Historical Analysis & Change Tracking