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ef.com.es

https://ef.com.es· First analyzed 20 May 2026· Updated 20 May 2026
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ef.com.es
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Mobile screenshot of ef.com.es
Mobile

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Hosting Provider

Cloudflare
cloudflare.com

IP Address

104.18.10.139

Site Location

🇪🇸 Spainvia tld

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

anirban.ns.cloudflare.com.pam.ns.cloudflare.com.

Performance

98

Core Web Vitals

Weight

First Contentful Paint
896 ms10%
Speed Index
1.2 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.5 MB
117 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

JAMstack
⚡ SSG
Decoupled
Frontend
Framework
Next.js
Styling
Tailwind CSS
API
Data Source
Headless CMS
Storyblok
Infrastructure
Platform
AWS CloudFront
CDN
Cloudflare

Detected API Sources

https://a.storyblok.com/f/3411...

Technology Stack

8 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Meta Frameworks

1
Next.js

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

Other

1
Optimizely

Reviews

1
Trustpilot

CDN

1
Cloudflare

SEO Analysis

B70/100
19
7
1
Meta Tags13/15
Content6/12
Headings3/8
Technical23/25
E-E-A-T2/7
Images3/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile3/4
Indexability3/3
E
ef.com.esef.com.es

EF - Idiomas. Educación. Viajes. | EF España

Líder mundial en intercambios estudiantiles, cursos de inglés y otros idiomas, y programas académicos en el extranjero. Elige entre más de 50 escuelas alrede...

Description truncated.
Title Length44 chars

Recommended: 50-60 chars (~258px / 580px)

Description Length171 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing H1 tag — every page should have exactly one H1

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

7 URLs

7 sub-sitemaps

robots.txt

15 rules

Sitemap reference found

Local SEO

Local Search Readiness

17/100
Poor
5 11 1

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

Sponsored

AI & LLM Readiness

D44/100
Bot Access
20/25
Machine Read.
7/25
Schema Data
3/25
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.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
Text ratio:2%
Words:1,261
Token eff.:Optimal

Structured Data

Microdata
Organization×1.1microdataWebSitemicrodata

Citation Readiness

Opening Summary19w
Descriptive Headingsavg 5.5w
Canonical URL
Open Graph3/3
Twitter Card2/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
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.
A
80/100
12
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
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
11/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
6/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 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.
64/100
C
153 mg
CO₂e / view
1.5 MB
Page Weight
60%
Cleaner Than
New Visitor
174 mg
vs
Returning (cached)
87 mg
Annual (10K/mo)
18.3 kg
Emission Segments
Data Center
8 mg
Network
45 mg
Device
100 mg
Resource Breakdown
JavaScript
1.4 MB
Images
1.5 KB
CSS
60.8 KB
HTML
38.5 KB
Other
3.7 KB
Green Hosting Verified
Cloudflare
GWF Verified
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

56%Poor
Interactive

HTTPS

WAF

76d

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

07.05.2026

Valid Until

05.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.ef.com.es

SHA-256 Fingerprint

A0:B7:8B:29:C6:AA:DC:48:37:DC:FC:4A:D1:EB:8C:A7:C1:6A:D2:80...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

age
18685
alt-svc
h3=":443"; ma=86400
cache-control
🟡 1200s(max-age=1200)
cf-cache-status
DYNAMIC
cf-placement
remote-AMS
cf-ray🇮🇹 Milan
9fe9ffb41b595837-MXP
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

98

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

ef-com-es.mail.protection.outlook.com

Domain Information

ef.com.es

DNSSEC
Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner
OneTrust
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: OneTrust
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.
A
82/100
Mobile Friendly17 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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Helvetica

WCAG Partial
65/100
Readability
/30
20/30

24px · LH 1.33

Hierarchy
/20
8/20
WCAG
/25
17/25

1:1 min contrast

Performance
/25
20/25

2 fonts · 5 req

Heading Font

Helvetica

Sans

Body Font

Helvetica

Sans24px

Contrast Ratio

1:1

5 issues

Reading Comfort

~34 CPL

Narrow lines
40px
h2
16px
h3
32px
h4
24px
p
Minor Third
Scale

✅ Excellent readability: 24px body text is ideal for all devices.

⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 5 elements below WCAG AA threshold (min 1.0:1).

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

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

Buy on MyFontsVariable FontsFluid Type (rem)Flesch 0

Color Palette

13 unique colors
15.54:1 AAA Light
#ffffff
Background· 77.6%
#222428
Secondary· 2.8%
#aab3c1
Primary· 3.1%
#7197ae
Secondary· 2.4%
#71635c
Secondary· 2.1%
#584037
Secondary· 1.8%
#d1cbc6
Secondary· 1.8%
#bac3cf
Secondary· 1.7%

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

1
OneTrustEnterprise

Cookie consent and privacy compliance tools

A/B Testing & Optimization

1
OptimizelyEnterprise

Experimentation and conversion optimization

Reviews & Social Proof

1
TrustpilotMid-Market

Customer reviews and testimonials

4

Categories

5

Total Tools

2

Enterprise

1

Mid-Market

Assessment: Sophisticated marketing and sales technology infrastructure

Sponsored

Scripts & Styles

21 Resources

20
Scripts
1
Styles
7
Async
10
Defer

Top Script Sources

local(14)googletagmanager.com(1)invitejs.trustpilot.com(1)ef.com.es(1)ef.com(1)

Website Identity

ef.com.es

933672600
Location detected: 🇪🇸 Spainvia tld
📧 Microsoft 365es-ES

Sponsored

Last analyzed: 20 May 2026 at 08:34

Historical Analysis & Change Tracking