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sunlightfoundation.com

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

Sponsored

Hosting Provider

Harvard University

IP Address

128.103.64.94

Site Location

🇺🇸 United Statesvia phone

Server Location

🇺🇸 Quincy, United States

ASN

AS1742

Organization

Harvard University

Server

Nginx

Nameservers

b.dns.gandi.net.c.dns.gandi.net.a.dns.gandi.net.

Performance

96

Core Web Vitals

Weight

First Contentful Paint
1.1 s10%
Speed Index
1.4 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
15.1 MB
78 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPressv5.6.2
cms
sfcom-wordpress-themeCustom

Technology Stack

7 Technologies Detected

CSS Frameworks

2
Tailwind CSS
Foundation

Plugins

2
Jquery Collapse O Matic
TablePress

Libraries

1
jQueryv1.9.1

Other

1
Modernizr

Web Servers

1
Nginx

SEO Analysis

D58/100
18
9
0
Meta Tags5/15
Content9/12
Headings8/8
Technical15/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
S
sunlightfoundation.comsunlightfoundation.com

Sunlight Foundation

Sunlight is said to be the best of disinfectants…

Title Length19 chars

Recommended: 50-60 chars (~111px / 580px)

Description Length49 chars

Recommended: 120-160 chars

Issues (0)

    9 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    14 URLs

    14 sub-sitemaps

    robots.txt

    4 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    18/100
    Poor
    5 10 2

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

    Sponsored

    AI & LLM Readiness

    D42/100
    Bot Access
    20/25
    Machine Read.
    11/25
    Schema Data
    0/25
    Citation
    11/25

    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:9%
    Words:483
    Token eff.:Optimal
    Sections/1K:16.6
    Depth:2/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary26w
    Descriptive Headingsavg 3.2w
    Canonical URL
    Open Graph0/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (9)
    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.
    C
    65/100
    10
    Passed
    3
    Critical
    1
    Warnings
    Images & Alt Text
    10/20
    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
    10/15
    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
    9/15
    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.
    3 recommendations
    • •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.
    20/100
    F
    1.91 g
    CO₂e / view
    15.1 MB
    Page Weight
    5%
    Cleaner Than
    New Visitor
    2.18 g
    vs
    Returning (cached)
    1.09 g
    Annual (10K/mo)
    228.9 kg
    Emission Segments
    Data Center
    426 mg
    Network
    458 mg
    Device
    1.02 g
    Resource Breakdown
    JavaScript
    118.0 KB
    Images
    14.7 MB
    CSS
    196.1 KB
    HTML
    7.7 KB
    Green Hosting Not Verified
    Harvard University
    7 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    21%Critical
    Interactive

    HTTPS

    No WAF

    49d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    Valid From

    17.03.2026

    Valid Until

    15.06.2026

    Subject Alternative Names (20)

    academy.sunlightfoundation.comaccesscheck.thenetmonitor.orgcjdata.tooltrack.orgclassifurlr.thenetmonitor.orgcore.thenetmonitor.orgcriminaljustice.tooltrack.orgdashboard.thenetmonitor.orgdonate.sunlightfoundation.com+12 more

    SHA-256 Fingerprint

    A3:7C:D5:F8:BF:07:22:72:FB:3D:44:2F:38:80:96:3B:05:1B:2E:2E...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    content-encoding
    📦 Gzip(gzip)
    content-type
    text/html
    date
    Sun, 26 Apr 2026 21:06:03 GMT
    etag
    W/"60382bb7-6dd9"
    last-modified
    Thu, 25 Feb 2021 22:59:03 GMT
    server
    nginx
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    0

    SPF
    DKIM
    DMARC

    Domain Information

    sunlightfoundation.com

    Domain Age
    20y 5m

    Created

    29.11.2005

    Expires

    29.11.2027

    Last Updated

    20.10.2025

    Registrar

    Gandi SAS

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    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.
    B
    71/100
    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

    Typography & Readability

    Georgia + Helvetica Neue

    WCAG Partial
    60/100
    Readability
    /30
    19/30

    14px · LH 1.80

    Hierarchy
    /20
    16/20

    2.3x ratio · ✓ H1→H6

    WCAG
    /25
    12/25

    1.68:1 min contrast

    Performance
    /25
    13/25

    System fonts

    Heading Font

    Georgia

    Serif32px

    Body Font

    Helvetica Neue

    Sans14px

    Contrast Ratio

    1.68:1

    20 issues

    Reading Comfort

    ~36 CPL

    Narrow lines
    32px
    h1
    39px
    h2
    22px
    h3
    17px
    h4
    14px
    p

    ⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

    ❌ Very complex text: Flesch score 8/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 20 elements below WCAG AA threshold (min 1.7:1).

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

    ✅ Strong hierarchy: Headlines are 2.3x larger than body text.

    ✅ System fonts: Zero font loading delay — best possible LCP impact.

    Buy on MyFontsFlesch 8

    Color Palette

    8 unique colors
    Light
    #e3e4d6
    Primary· 46.599999999999994%
    #fffffe
    Background· 22.299999999999997%
    #8e9a22
    Accent· 9.1%
    #3d5944
    Secondary· 5.6%
    #b9b155
    Secondary· 4.6%
    #c1d0aa
    Secondary· 4.2%
    #8e762e
    Accent· 3.9%
    #eaf1ee
    Secondary· 3.8%

    Business & Marketing Stack

    1 Tools Detected

    Growing

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    1

    Categories

    1

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    13 Resources

    8
    Scripts
    5
    Styles
    0
    Async
    0
    Defer

    Top Script Sources

    sunlightfoundation.com(6)use.typekit.com(1)ajax.googleapis.com(1)

    Website Identity

    sunlightfoundation.com

    +12027421520
    20 years old

    1440 G Street NWWashington,DC20005202-742-1520Call with Skype

    Location detected: 🇺🇸 United Statesvia phone
    Gandi SASen-US

    Sponsored

    Last analyzed: 26 Apr 2026 at 21:06

    Historical Analysis & Change Tracking