StackOptic
Back to Search
esn.org favicon

esn.org

https://esn.org· First analyzed 08 May 2026· Updated 08 May 2026
Export
esn.org
Desktop screenshot of esn.org
Mobile screenshot of esn.org
Mobile

Sponsored

Hosting Provider

Cloudflare
cloudflare.com

IP Address

188.114.97.3

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

CloudFlare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

phil.ns.cloudflare.com.rosa.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
547 ms10%
Speed Index
711 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.3 MB
62 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Drupal

Technology Stack

8 Technologies Detected

Analytics

4
Google Analytics
Google Analytics 4
Google Tag Manager
Segment

Libraries

1
jQuery

CSS Frameworks

1
Tailwind CSS

CDN

1
Cloudflare

Languages

1
PHPv7.2.34

SEO Analysis

D58/100
15
8
2
Meta Tags7/15
Content11/12
Headings3/8
Technical17/25
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile2/4
Indexability3/3
E
esn.orgesn.org

Erasmus Student Network

Erasmus Student Network (ESN) is a non-profit international student organisation. Our mission is to represent international students, thus provide opportunit...

Description truncated.
Title Length23 chars

Recommended: 50-60 chars (~148px / 580px)

Description Length258 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (14/26) — critical for accessibility and SEO

10 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

70 rules

Local SEO

Local Search Readiness

6/100
Poor
2 13 2

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

Sponsored

AI & LLM Readiness

D45/100
Bot Access
20/25
Machine Read.
8/25
Schema Data
0/25
Citation
17/25

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
navheader/footer
Text ratio:7%
Words:879
Token eff.:Optimal
Sections/1K:31.9
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary30w
Descriptive Headingsavg 5.1w
Canonical URL
Open Graph3/3
Twitter Card2/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (8)
AI readiness recommendation preview...
Upgrade to view recommendations

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.
C
68/100
8
Passed
5
Critical
1
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
13/20
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
9/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
1/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
4 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.
42/100
D
241 mg
CO₂e / view
2.3 MB
Page Weight
30%
Cleaner Than
New Visitor
276 mg
vs
Returning (cached)
138 mg
Annual (10K/mo)
28.9 kg
Emission Segments
Data Center
12 mg
Network
71 mg
Device
159 mg
Resource Breakdown
JavaScript
98.8 KB
Images
1.3 MB
CSS
943.9 KB
HTML
14.5 KB
Green Hosting Verified
Cloudflare
GWF Verified
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A

Security Score

81%Very Good
Static / Informational

HTTPS

WAF

60d

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+H3

Valid From

09.04.2026

Valid Until

08.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

esn.org*.esn.org

SHA-256 Fingerprint

A8:76:C0:6B:48:9F:EC:33:58:FB:9A:51:1F:21:DB:0B:9F:52:C2:C4...

Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

alt-svc
h3=":443"; ma=86400
cache-control
🔵 1 Days(public, max-age=86400)
cf-cache-status
DYNAMIC
cf-ray🇮🇹 Milan
9f890d24dc6d703a-MXP
content-encoding
zstd
content-language
en
Good Warning Issue

Email Infrastructure

Google Workspace

Score

75

SPF
DKIM
DMARC

MX Records (6)

alt1.aspmx.l.google.com
aspmx2.googlemail.com
ms95326601.msv1.invalid
aspmx3.googlemail.com

+2 more

Domain Information

esn.org

Domain Age
28y 10m

Created

27.06.1997

Expires

26.06.2026

Last Updated

25.11.2025

Registrar

Key-Systems GmbH

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked

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.
D
56/100
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
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Roboto Condensed + Open Sans

WCAG Partial
40/100
Readability
/30
13/30

13px · LH 1.38

Hierarchy
/20
5/20
WCAG
/25
13/25

1.51:1 min contrast

Performance
/25
9/25

3 fonts · 5 req

Heading Font

Roboto Condensed

Sans

Body Font

Open Sans

Sans13px

Contrast Ratio

1.51:1

36 issues

Reading Comfort

~46 CPL

Optimal (45–75)
32px
h2
13px
p

❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Tight line spacing (1.38). Increase to 1.4–1.6 for better readability.

✅ Optimal line length: ~46 chars/line (ideal 45–75 CPL).

⚠️ Hard to read: Flesch score 39/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 36 elements below WCAG AA threshold (min 1.5:1).

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

Buy on MyFontsFlesch 39

Color Palette

8 unique colors
Light
#ffffff
Background· 55.9%
#292372
Accent· 14.2%
#00adef
Primary· 13.1%
#b2d3de
Secondary· 6.2%
#7b71a1
Secondary· 4.1%
#1a6ab9
Accent· 0.3%

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

Sponsored

Scripts & Styles

11 Resources

6
Scripts
5
Styles
0
Async
0
Defer

Top Script Sources

esn.org(5)googletagmanager.com(1)

Website Identity

esn.org

28 years old
Location detected: 🇨🇦 Canadavia ip
Key-Systems GmbH📧 Google Workspaceen

Sponsored

Last analyzed: 08 May 2026 at 14:11

Historical Analysis & Change Tracking