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winterthur.org

https://winterthur.org· First analyzed 02 May 2026· Updated 02 May 2026
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winterthur.org
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Mobile

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Hosting Provider

IP Address

64.176.204.8

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Piscataway, United States

ASN

AS20473

Organization

The Constant Company, LLC

Server

Nginx

Nameservers

ns3.lnhi.net.ns1.lnhi.net.ns2.lnhi.net.

Performance

98

Core Web Vitals

Weight

First Contentful Paint
930 ms10%
Speed Index
1.2 s10%
Largest Contentful Paint
25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
15 MB
232 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPressv5.9.13
cms
Winterthurv1Custom
by Trellist Marketing & Technology
View Theme

Progressive Web App

Web ManifestApple Touch Icon

SEO Analysis

A82/100
23
5
1
Meta Tags13/15
Content11/12
Headings8/8
Technical24/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social4/5
Freshness4/4
Mobile3/4
Indexability3/3
W
winterthur.orgwinterthur.org

Home - Winterthur Museum, Garden & Library

Brandywine Valley Museum of American Decorative Arts and Gardens from home of Henry Francis du Pont (Wilmington, DE)

Title Length42 chars

Recommended: 50-60 chars (~267px / 580px)

Description Length116 chars

Recommended: 120-160 chars

Issues (1)

  • Most images missing alt text (6/8) — critical for accessibility and SEO

Crawlability

Sitemap

Type: index

6 URLs

6 sub-sitemaps

robots.txt

5 rules

Local SEO

Local Search Readiness

26/100
Needs Work
9 8 1

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AI & LLM Readiness

D52/100
Bot Access
20/25
Machine Read.
13/25
Schema Data
4/25
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
nav
Text ratio:6%
Words:1,640
Token eff.:Optimal
Sections/1K:3.7
Depth:1/5

Structured Data

3 JSON-LD
WebSiteBreadcrumbListSearchAction

Citation Readiness

Opening Summary1144w
Descriptive Headingsavg 3.2w
Canonical URL
Open Graph2/3
Twitter Card1/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (9)
AI readiness recommendation preview...

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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.
B
78/100
14
Passed
1
Critical
3
Warnings
Images & Alt Text
15/20
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
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
15/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
3/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
3 recommendations
  • Accessibility recommendation preview...

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.
18/100
F
1.90 g
CO₂e / view
15.0 MB
Page Weight
5%
Cleaner Than
New Visitor
2.18 g
vs
Returning (cached)
1.09 g
Annual (10K/mo)
228.6 kg
Emission Segments
Data Center
425 mg
Network
457 mg
Device
1.02 g
Resource Breakdown
JavaScript
466.8 KB
Images
561.0 KB
CSS
14.0 MB
Fonts
6.9 KB
HTML
25.2 KB
Other
307 B
Green Hosting Not Verified
The Constant Company, LLC
8 recommendations
  • Carbon footprint recommendation preview...
A

Security Score

86%Very Good
Interactive

HTTPS

No WAF

34d

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

HTTP Protocol

HTTP/2

Valid From

07.03.2026

Valid Until

05.06.2026

Subject Alternative Names (1)

www.winterthur.org

SHA-256 Fingerprint

B9:54:0C:C5:DA:DE:D7:CC:A4:97:59:8A:3B:AC:B3:CA:E0:9E:57:91...

Top Recommendations

Security recommendation preview

HTTP Headers

Developer Console

content-encoding
Brotli(br)
content-security-policy
form-action 'self'
content-type
text/html; charset=UTF-8
date
Sat, 02 May 2026 11:30:36 GMT
link
<https://www.winterthur.org/wp-json/>; rel="https://api.w.or...
permissions-policy
geolocation=*, private-state-token-redemption=(self "https:/...
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

95

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

winterthur-org.mail.protection.outlook.com

Domain Information

winterthur.org

Domain Age
28y 3m

Created

06.02.1998

Expires

05.02.2028

Last Updated

16.04.2026

Registrar

GoDaddy.com, LLC

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected

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
77/100
Mobile Friendly9 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
1 recommendation
  • Mobile compatibility recommendation preview...

Typography & Readability

warnock-pro-display + lato

WCAG Partial
78/100
Readability
/30
24/30

16px · LH 1.55

Hierarchy
/20
16/20

1.56x ratio · ✓ H1→H6

WCAG
/25
18/25

1:1 min contrast

Performance
/25
20/25

2 fonts · 3 req

Heading Font

warnock-pro-display

Sans25px

Body Font

lato

Sans16px

Contrast Ratio

1:1

2 issues

Reading Comfort

~40 CPL

Narrow lines
25px
h1
52px
h2
40px
h3
20px
h4
16px
p
Major Second
Scale

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

✅ Optimal line spacing: 1.55 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 40/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 1.0:1).

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

✅ Lean font stack: 2 font families keeps load times fast.

Color Palette

12 unique colors
Light
#ffffff
Background· 19.7%
#646c30
Secondary· 12.899999999999999%
#010408
Primary· 12.4%
#424623
Secondary· 7.8%
#1c2313
Secondary· 7.8%
#959159
Secondary· 7.8%
#868143
Secondary· 7.3%
#213d36
Secondary· 3.6%

Business & Marketing Stack

6 Tools Detected

Enterprise

Marketing Automation

1

Email marketing and automation platforms

Behavior Analytics

3

User behavior and product analytics

Advertising

2

Ad platforms and retargeting pixels

3

Categories

6

Total Tools

0

Enterprise

4

Mid-Market

Assessment: Sophisticated marketing and sales technology infrastructure

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Scripts & Styles

30 Resources

20
Scripts
10
Styles
17
Async
2
Defer

Top Script Sources

connect.facebook.net(4)js.adsrvr.org(2)youtube.com(2)s.pinimg.com(2)static.hotjar.com(2)

Website Identity

Winterthur Museum, Garden & Library

Brandywine Valley Museum of American Decorative Arts and Gardens from home of Henry Francis du Pont (Wilmington, DE)

Location detected: 🇺🇸 United Statesvia ip
GoDaddy.com, LLC📧 Microsoft 365en-US

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Last analyzed: 02 May 2026 at 11:31

Historical Analysis & Change Tracking