wistar.org

https://wistar.org· First analyzed 22 May 2026· Updated 22 May 2026

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wistar.org

Mobile

Sponsored

Hosting Provider

Google Cloud Platform

cloud.google.com

IP Address

130.211.184.161

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Council Bluffs, United States

ASN

AS396982

Organization

Google Cloud (us-central1)

Server

Nginx

Nameservers

ns-1262.awsdns-29.org.ns-1884.awsdns-43.co.uk.ns-62.awsdns-07.com.ns-1016.awsdns-63.net.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.4 s10%

Speed Index

1.8 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.3 MB

62 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

YOOtheme Childv5.0.0Custom

by wsigenesis

Technology Stack

19 Technologies Detected

Plugins

Genesispro Wp Popups Lite

Gravity Forms

Gravityformsrecaptcha

CSS Frameworks

Analytics

Libraries

Icon Libraries

Fonts

Tag Managers

Web Servers

Security

SEO Analysis

A87/100

Meta Tags14/15

Content11/12

Headings8/8

Technical24/25

E-E-A-T2/7

Images3/7

Links5/5

URL5/5

Social4/5

Freshness4/4

Mobile4/4

Indexability3/3

wistar.orgwistar.org

The Wistar Institute is a Global Leader in Biomedical Research

The Wistar Institute, a global leader in biomedical research, specializes in cancer, immunology, infectious disease & vaccine development.

Title Length62 chars

Recommended: 50-60 chars (~370px / 580px)

Description Length138 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (11/17) — critical for accessibility and SEO

3 issues found

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Crawlability

Sitemap

Type: index

5 URLs

5 sub-sitemaps

robots.txt

18 rules

Sitemap reference found

Local SEO

Local Search Readiness

29/100

Needs Work

9 9

Sponsored

AI & LLM Readiness

C61/100

Bot Access

20/25

Machine Read.

19/25

Schema Data

8/25

Citation

14/25

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.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

navheader/footer

Text ratio:6%

Words:1,150

Token eff.:Optimal

Sections/1K:7

Depth:2/5

Structured Data

5 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

sameAs entity links

Citation Readiness

Opening Summary497w

Descriptive Headingsavg 3.6w

Canonical URL

Open Graph2/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (8)

AI readiness recommendation preview...

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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.

75/100

Passed

Critical

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

5/15

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.

3 recommendations

•Accessibility recommendation preview...

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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.

62/100

139 mg

CO₂e / view

1.3 MB

Page Weight

70%

Cleaner Than

New Visitor

158 mg

Returning (cached)

79 mg

Annual (10K/mo)

16.6 kg

Emission Segments

Data Center

7 mg

Network

41 mg

Device

91 mg

Resource Breakdown

JavaScript

350.6 KB

Images

803.4 KB

CSS

199.3 KB

HTML

19.2 KB

Green Hosting Verified

Google Cloud

GWF Verified

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

61%Fair

Interactive

HTTPS

No WAF

84d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1+H3

Valid From

17.05.2026

Valid Until

15.08.2026

Subject Alternative Names (2)

wistar.orgwww.wistar.org

SHA-256 Fingerprint

25:D1:AB:AF:8F:14:C9:51:4F:BB:AF:31:A8:D0:3B:D9:A5:3B:3E:9D...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-length

19395

content-type

text/html; charset=UTF-8

date

Fri, 22 May 2026 11:26:27 GMT

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

wistar-org.mail.protection.outlook.com

Domain Information

wistar.org

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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.

77/100

Mobile Friendly2 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...

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Typography & Readability

Merriweather Sans

WCAG Partial

71/100

Readability

/30

23/30

16px · LH 1.50

Hierarchy

/20

14/20

2.62x ratio

WCAG

/25

16/25

2.57:1 min contrast

Performance

/25

18/25

2 fonts · 4 req

Heading Font

Merriweather Sans

Sans42px

Body Font

Merriweather Sans

Sans16px

Contrast Ratio

2.57:1

21 issues

Reading Comfort

~37 CPL

Narrow lines

42px

24px

35px

16px

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).

❌ Very complex text: Flesch score 25/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 21 elements below WCAG AA threshold (min 2.6:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ Strong hierarchy: Headlines are 2.6x larger than body text.

Buy on MyFontsFlesch 25

Color Palette

13 unique colors

18.6:1 AAA Dark

#131311

Text· 19.2%

#ffffff

Text· 13.2%

#01345a

Primary· 9.6%

#021724

Accent· 6%

#3d372f

Secondary· 5.3%

#022942

Accent· 3.5%

#d4dadd

Secondary· 3.1%

#885841

Secondary· 2.2%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

28 Resources

Scripts

Styles

Async

Defer

Top Script Sources

wistar.org(10)connect.facebook.net(2)googletagmanager.com(2)wsmcdn.audioeye.com(1)google-analytics.com(1)

Website Identity

The Wistar Institute

Organization

The Wistar Institute is a global leader in biomedical research with special expertise in cancer, immunology, infectious disease, and vaccine development. Wistar is the nation’s first independent institution devoted to biomedical research, training the next generation of leaders in science and suppor

215-898-3701

www.wistar.org/

Location detected: 🇺🇸 United Statesvia ip

📧 Microsoft 365en-USEst. 1892

Social Profiles

Facebook X (Twitter)Instagram LinkedIn YouTube Bluesky

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Last analyzed: 22 May 2026 at 11:26

Historical Analysis & Change Tracking