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https://seen.es· First analyzed 21 May 2026· Updated 21 May 2026
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seen.es
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Mobile

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Hosting Provider

Arsys Internet S.L.

IP Address

82.223.210.129

Site Location

🇪🇸 Spainvia phone

Server Location

🇪🇸 Madrid, Spain

ASN

AS8560

Organization

Arsys Internet S.L.

Server

Microsoft IIS

Nameservers

dns1.laeme.es.dns2.laeme.es.

Performance

96

Core Web Vitals

Weight

First Contentful Paint
1.1 s10%
Speed Index
1.4 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
15.7 MB
89 requests

Image Optimization

WebP
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
Infrastructure
Hosting
Arsys Internet S.L.

Technology Stack

6 Technologies Detected

Libraries

1
jQueryv3.3.1

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Web Servers

1
Microsoft IISv10.0

Frameworks

1
ASP.NET

Customer Support

1
Zendesk

SEO Analysis

B72/100
20
4
1
Meta Tags15/15
Content11/12
Headings3/8
Technical13/25
E-E-A-T3/7
Images5/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
S
seen.esseen.es

SEEN | Sociedad Española de Endocrinología y Nutrición

La Sociedad Española de Endocrinología y Nutrición (SEEN) impulsa la investigación y la difusión científica en endocrinología, nutrición y metabolismo

Title Length54 chars

Recommended: 50-60 chars (~319px / 580px)

Description Length150 chars

Recommended: 120-160 chars

Issues (1)

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

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

202 URLs

robots.txt

Local SEO

Local Search Readiness

15/100
Poor
5 10 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.
14/25
Schema Data
0/25
Citation
11/25

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:11%
Words:1,446
Token eff.:Optimal
Sections/1K:6.9
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary12w
Descriptive Headingsavg 7.8w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (6)
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.
B
71/100
12
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
20/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
3/15
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
9/15
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.
34/100
F
1.62 g
CO₂e / view
15.7 MB
Page Weight
5%
Cleaner Than
New Visitor
1.86 g
vs
Returning (cached)
928 mg
Annual (10K/mo)
194.9 kg
Emission Segments
Data Center
80 mg
Network
477 mg
Device
1.07 g
Resource Breakdown
JavaScript
323.7 KB
Images
15.1 MB
CSS
144.2 KB
HTML
27.9 KB
Other
85.5 KB
Green Hosting Verified
IONOS SE
GWF Verified
6 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

0%Critical
Critical / Transactional

HTTPS

No WAF

15d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Soluciones Corporativas IP, SL

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

05.05.2025

Valid Until

05.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.seen.esseen.es

SHA-256 Fingerprint

75:11:BD:C8:FB:2E:36:B1:F8:C2:D2:F8:23:46:74:78:C2:99:D2:88...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🟣 Private(private)
content-encoding
📦 Gzip(gzip)
content-length
28257
content-type
text/html; charset=utf-8
date
Thu, 21 May 2026 17:12:57 GMT
server
Microsoft-IIS/10.0
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

mx.serviciodecorreo.es

Domain Information

seen.es

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
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.
C
65/100
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
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Carlito

WCAG Partial
63/100
Readability
/30
22/30

16px · LH 1.50

Hierarchy
/20
7/20
WCAG
/25
16/25

2.89:1 min contrast

Performance
/25
18/25

1 font · 3 req

Heading Font

Carlito

Sans

Body Font

Carlito

Sans16px

Contrast Ratio

2.89:1

43 issues

Reading Comfort

~38 CPL

Narrow lines
20px
h2
20px
h3
24px
h4
16px
p
Major Second
Scale

✅ Excellent readability: 16px body text is ideal for all devices.

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

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

⚠️ Partial contrast: 43 elements below WCAG AA threshold (min 2.9:1).

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

✅ Lean font stack: 1 font families keeps load times fast.

Buy on MyFontsFlesch 0

Color Palette

8 unique colors
4:1 AA Large Light
#7f7f7f
Other· 37.1%
#ffffff
Background· 15.4%
#cf7d23
Primary· 0%
#02305c
Accent· 17.6%
#1d889f
Accent· 5.9%
#79695b
Secondary· 5.3%
#e2e6e8
Secondary· 3.6%

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

11 Resources

8
Scripts
3
Styles
0
Async
0
Defer

Top Script Sources

local(7)ajax.googleapis.com(1)

Website Identity

seen.es

QR@adisen.es
+34914313294
Location detected: 🇪🇸 Spainvia phone
es

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Last analyzed: 21 May 2026 at 17:13

Historical Analysis & Change Tracking