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edx.org

https://edx.org· First analyzed 11 Feb 2026· Updated 11 Feb 2026
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edx.org
Desktop screenshot of edx.org
Mobile screenshot of edx.org
Mobile

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Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

18.165.122.124

Server Location

🇮🇪 Dublin, Ireland

ASN

AS16509

Organization

AWS CloudFront (GLOBAL)

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns-828.awsdns-39.net.ns-1472.awsdns-56.org.ns-1753.awsdns-27.co.uk.ns-73.awsdns-09.com.

Performance

Page Speed

2.2 MB
141 requests
0–49
50–89
90–100

Architecture Stack

JAMstack
🔀 Hybrid
Decoupled
Frontend
Framework
Next.js
Styling
Tailwind CSS
API
Data Source
Headless CMS
Contentful
Infrastructure
Hosting
Amazon Web Services (AWS)
CDN
Cloudflare

Detected API Sources

https://images.ctfassets.net/i...

Technology Stack

12 Technologies Detected

Frameworks

3
React
Angular
Alpine.js

Analytics

3
Google Analytics
Google Analytics 4
Segment

Meta Frameworks

2
Next.jsAstro

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

CDN

1
Cloudflare

Marketing

1
HubSpot

SEO Analysis

B72/100
11
2
1
E
edx.orgedx.org

edX | Online Courses, Certificates & Degrees from Leading Institutions

Find the online learning path for you, delivered by world-class institutions like Harvard, Google, Amazon, and more.

Title Length70 chars

Recommended: 50-60 chars

Description Length116 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing H1 tag - every page should have one H1

3 issues found

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Sponsored

A

Security Score

86%Very Good
Interactive

HTTPS

WAF

251d

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HTTP Headers

Developer Console

age
38835
cache-control
🔴 No Cache(private, no-cache, no-store, max-age=0, must-revalidate)
cdn-cache-control
public, max-age=86400, stale-while-revalidate=60, stale-if-e...
cf-cache-status
HIT
cf-ray🇩🇪 Frankfurt
9cc1d26a49e03053-FRA
content-encoding
📦 Gzip(gzip)
Good Warning Issue

Typography & Readability

Inter

80/100
Readability
/30
32/40

14px · LH 1.40

Hierarchy
/20
25/25

2.14x ratio

WCAG
/25
15/15

Contrast: undefined

Performance
/25
13/20

1 font

Heading Font

Inter

Sans30px

Body Font

Inter

Sans14px

Contrast Ratio

--

Reading Comfort

~33 CPL

Needs attention
30px
h1
72px
h2
41px
h3
24px
h4
14px
p
Minor Third
Scale

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.1x larger than body text.

✅ Good performance: Using 1 font families keeps load times fast.

✅ Consistent design: Single font family with weight variations is a modern best practice.

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Enterprise

Behavior Analytics

3
Google Tag ManagerFree
SegmentEnterprise
Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

1
OneTrustEnterprise

Cookie consent and privacy compliance tools

2

Categories

4

Total Tools

2

Enterprise

0

Mid-Market

Assessment: Sophisticated marketing and sales technology infrastructure

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Scripts & Styles

30 Resources

20
Scripts
10
Styles
20
Async
0
Defer

Top Script Sources

local(17)gstatic.com(1)googletagmanager.com(1)cdn.segment.com(1)

Website Identity

edx.org

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Last analyzed: 11 Feb 2026 at 06:35

Historical Analysis & Change Tracking