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core-econ.org

https://core-econ.org· First analyzed 12 May 2026· Updated 12 May 2026
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core-econ.org
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Mobile

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Hosting Provider

LiteSpeed
cloudflare.com

IP Address

104.26.12.245

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

uma.ns.cloudflare.com.curt.ns.cloudflare.com.

Performance

97

Core Web Vitals

Weight

First Contentful Paint
968 ms10%
Speed Index
1.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
13.6 MB
192 requests

Image Optimization

Responsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
CMS
WordPressv6.9.4
Infrastructure
Hosting
Cloudflare
CDN
Cloudflare

Technology Stack

31 Technologies Detected

Plugins

11
Asgaros Forum
Contact Form 7
GiveGive Form Field ManagerGive Gift AidGive RecurringUser Access ManagerElasticpressMailinWp Statistics
Yoast SEO

Libraries

4
jQueryv3.7.1
jQuery UI
Underscore.jsMoment.js

CSS Frameworks

3
Bootstrapv1.0.0
Tailwind CSS
Foundation

Analytics

3
Google Analytics
Google Analytics 4
Hotjar

UI Components

2
Slick CarouselFancybox

Frameworks

1
React

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Email Marketing

1
Brevo (Sendinblue)

Payments

1
Stripe

CDN

1
Cloudflare

Security

1
reCAPTCHA

SEO Analysis

A86/100
25
4
1
Meta Tags15/15
Content11/12
Headings6/8
Technical25/25
E-E-A-T2/7
Images2/7
Links5/5
URL5/5
Social5/5
Freshness4/4
Mobile3/4
Indexability3/3
C
core-econ.orgcore-econ.org

CORE Econ: Home of The Economy 2.0 and More | CORE Econ

Accessible, relevant, real-world economics teaching, free to everyone. CORE is home to The Economy 2.0 & other economics ebooks.

Title Length55 chars

Recommended: 50-60 chars (~348px / 580px)

Description Length128 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (66/92) — critical for accessibility and SEO

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

5 URLs

5 sub-sitemaps

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

22/100
Needs Work
6 11

Sponsored

AI & LLM Readiness

D56/100
Bot Access
20/25
Machine Read.
13/25
Schema Data
7/25
Citation
16/25

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:4%
Words:1,877
Token eff.:Optimal
Sections/1K:19.2
Depth:1/5

Structured Data

4 JSON-LD
Organization×1.1WebSiteBreadcrumbListSearchAction

Citation Readiness

Opening Summary11w
Descriptive Headingsavg 4.8w
Canonical URL
Open Graph2/3
Twitter Card3/3
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
79/100
13
Passed
3
Critical
2
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
18/20
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
11/15
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...
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.
26/100
F
1.41 g
CO₂e / view
13.6 MB
Page Weight
5%
Cleaner Than
New Visitor
1.61 g
vs
Returning (cached)
803 mg
Annual (10K/mo)
168.7 kg
Emission Segments
Data Center
69 mg
Network
413 mg
Device
924 mg
Resource Breakdown
JavaScript
1.3 MB
Images
9.5 MB
CSS
2.8 MB
Fonts
1.0 KB
HTML
42.6 KB
Other
1.2 KB
Green Hosting Verified
Cloudflare
GWF Verified
8 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

0%Critical
Critical / Transactional

HTTPS

WAF

31d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

14.03.2026

Valid Until

12.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

core-econ.org*.core-econ.org

SHA-256 Fingerprint

07:1A:5A:14:9F:28:D5:65:22:24:6C:AF:D4:9A:2F:06:89:D7:DA:51...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cf-cache-status
DYNAMIC
cf-ray🇮🇹 Milan
9fa7593f2e230d61-MXP
content-encoding
⚡ Brotli(br)
content-type
text/html; charset=UTF-8
date
Tue, 12 May 2026 06:25:54 GMT
host-header
6b7412fb82ca5edfd0917e3957f05d89
Good Warning Issue

Email Infrastructure

Google Workspace

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

aspmx3.googlemail.com
alt1.aspmx.l.google.com
alt2.aspmx.l.google.com
aspmx2.googlemail.com

+1 more

Domain Information

core-econ.org

Domain Age
12y 6m

Created

05.11.2013

Expires

05.11.2030

Last Updated

13.03.2025

Registrar

NameCheap, Inc.

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
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.
B
77/100
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, initial-scale=1.0
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Source Sans Pro

WCAG AA
76/100
Readability
/30
17/30

18px · LH 1.20

Hierarchy
/20
20/20

3.11x ratio · ✓ H1→H6

WCAG
/25
19/25

4.55:1 min contrast

Performance
/25
20/25

1 font · 2 req

Heading Font

Source Sans Pro

Sans56px

Body Font

Source Sans Pro

Sans18px

Contrast Ratio

4.55:1

WCAG AA (≥4.5:1)

Reading Comfort

~37 CPL

Narrow lines
56px
h1
40px
h2
24px
h3
16px
h4
18px
p

✅ Excellent readability: 18px body text is ideal for all devices.

⚠️ Tight line spacing (1.20). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 27/100. Consider shorter sentences and simpler words.

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

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

✅ Strong hierarchy: Headlines are 3.1x larger than body text.

GGoogle FontsBuy on MyFontsFlesch 27

Color Palette

7 unique colors
16.36:1 AAA Light
#ffffff
Background· 29.700000000000003%
#211f22
Text· 22.1%
#583d3c
Primary· 8.2%
#a16d6d
Secondary· 2%

Business & Marketing Stack

3 Tools Detected

Advanced

Marketing Automation

1
Brevo (Sendinblue)SMB

Email marketing and automation platforms

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

2

Categories

3

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Well-developed marketing technology stack

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Scripts & Styles

30 Resources

20
Scripts
10
Styles
8
Async
1
Defer

Top Script Sources

core-econ.org(12)cdn.by.wonderpush.com(2)gstatic.com(2)googletagmanager.com(2)sibautomation.com(1)

Website Identity

CORE

CORE

Organization

Accessible, relevant, real-world economics teaching, free to everyone. CORE is home to The Economy 2.0 & other economics ebooks.

www.core-econ.org/
12 years old
Location detected: 🇨🇦 Canadavia ip
NameCheap, Inc.📧 Google Workspaceen

Sponsored

Last analyzed: 12 May 2026 at 06:26

Historical Analysis & Change Tracking