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worldwidescience.org

https://worldwidescience.org· First analyzed 03 May 2026· Updated 03 May 2026
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worldwidescience.org
Desktop screenshot of worldwidescience.org
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Mobile

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Hosting Provider

Department of Energy, Office of Scientific and Technical Information

IP Address

192.107.175.53

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Oak Ridge, United States

ASN

AS293

Organization

Department of Energy, Office of Scientific and Technical Information

Server

Apache

Nameservers

edns1.ultradns.org.edns1.ultradns.biz.edns1.ultradns.com.edns1.ultradns.net.

Performance

95

Core Web Vitals

Weight

First Contentful Paint
1.2 s10%
Speed Index
1.5 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
462 KB
22 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Department of Energy, Office of Scientific and Technical Information

Technology Stack

7 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Segment

Libraries

1
jQueryv3.6.1

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Web Servers

1
Apache

SEO Analysis

F38/100
10
9
2
Meta Tags7/15
Content3/12
Headings0/8
Technical11/21
E-E-A-T0/7
Images4/7
Links1/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
W
worldwidescience.orgworldwidescience.org

WorldWideScience.org | WorldWideScience

No description available for this page.

Title Length39 chars

Recommended: 50-60 chars (~235px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing meta description — important for click-through rates in SERPs
  • • Missing H1 tag — every page should have exactly one H1

11 issues found

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Local SEO

Local Search Readiness

3/100
Poor
1 14 2

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

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AI & LLM Readiness

F28/100
Bot Access
20/25
Machine Read.
3/25
Schema Data
0/25
Citation
5/25

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
Text ratio:0%
Words:129
Token eff.:Too Short

Structured Data

No Schema

Citation Readiness

Opening Summary26w
Descriptive Headings
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (10)
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
71/100
10
Passed
3
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
10/20
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
7/15
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.
2 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.
49/100
A
57 mg
CO₂e / view
461.6 KB
Page Weight
90%
Cleaner Than
New Visitor
65 mg
vs
Returning (cached)
33 mg
Annual (10K/mo)
6.9 kg
Emission Segments
Data Center
13 mg
Network
14 mg
Device
31 mg
Resource Breakdown
JavaScript
111.8 KB
Images
4.0 KB
CSS
244.4 KB
HTML
101.4 KB
Green Hosting Not Verified
Department of Energy, Office of Scientific and Technical Information
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

36%Critical
Interactive

HTTPS

No WAF

245d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

03.12.2025

Valid Until

03.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

worldwidescience.orgwww.worldwidescience.org

SHA-256 Fingerprint

A4:8B:4D:2D:77:48:2E:6E:DD:AD:8F:36:A7:CE:CB:A5:C8:52:7C:D0...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges
bytes
connection
Keep-Alive
content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=utf-8
date
Sun, 03 May 2026 02:02:35 GMT
keep-alive
timeout=5, max=100
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

0

SPF
DKIM
DMARC

Domain Information

worldwidescience.org

Domain Age
18y 12m

Created

10.05.2007

Expires

10.05.2029

Last Updated

11.06.2024

Registrar

GoDaddy.com, LLC

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

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
75/100
Mobile Friendly309 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=1.0
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Roboto

WCAG AA
70/100
Readability
/30
20/30

17px · LH 1.50

Hierarchy
/20
10/20
WCAG
/25
22/25

5.37:1 min contrast

Performance
/25
18/25

System fonts

Heading Font

Roboto

Body Font

Roboto

Sans17px

Contrast Ratio

5.37:1

WCAG AA (≥4.5:1)

Reading Comfort

~43 CPL

Narrow lines
17px
p

✅ Excellent readability: 17px body text is ideal for all devices.

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

❌ Very complex text: Flesch score 3/100. Consider shorter sentences and simpler words.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.4:1).

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

✅ Smart font loading: font-display: swap prevents invisible text during load (FOIT).

Flesch 3

Color Palette

6 unique colors
2.88:1 Fail Light
#ffffff
Background· 92.6%
#989899
Other· 1.2%

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

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Scripts & Styles

12 Resources

6
Scripts
6
Styles
2
Async
1
Defer

Top Script Sources

local(3)google-analytics.com(1)googletagmanager.com(1)osti.gov(1)

Website Identity

worldwidescience.org

18 years old
Location detected: 🇺🇸 United Statesvia ip
GoDaddy.com, LLCen

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Last analyzed: 03 May 2026 at 02:03

Historical Analysis & Change Tracking