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vliz.be

https://vliz.be· First analyzed 02 May 2026· Updated 02 May 2026
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vliz.be
Desktop screenshot of vliz.be
Mobile screenshot of vliz.be
Mobile

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Hosting Provider

Flanders Marine Institute

IP Address

193.191.134.34

Site Location

🇧🇪 Belgiumvia tld

Server Location

🇧🇪 Affligem, Belgium

ASN

AS2611

Organization

Flanders Marine Institute

Server

Apache

Nameservers

ns1.belnet.be.ns2.belnet.be.ns3.belnet.be.ns.vliz.be.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
521 ms10%
Speed Index
677 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
16.9 MB
53 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Flanders Marine Institute

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

4 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Analytics

1
Matomo

Web Servers

1
Apachev2.4.62

SEO Analysis

B71/100
23
4
1
Meta Tags4/15
Content11/12
Headings8/8
Technical19/25
E-E-A-T0/7
Images5/7
Links5/5
URL5/5
Social5/5
Freshness2/4
Mobile4/4
Indexability3/3
V
vliz.bevliz.be

Vlaams Instituut voor de Zee

No description available for this page.

Title Length28 chars

Recommended: 50-60 chars (~169px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing meta description — important for click-through rates in SERPs

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

2,631 URLs

robots.txt

61 rules

Sitemap reference found

Local SEO

Local Search Readiness

12/100
Poor
4 12 2

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

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AI & LLM Readiness

D47/100
Bot Access
20/25
Machine Read.
11/25
Schema Data
0/25
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:10%
Words:2,303
Token eff.:Optimal
Sections/1K:24.8
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary201w
Descriptive Headingsavg 3.5w
Canonical URL
Open Graph2/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (10)
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.
A
81/100
14
Passed
3
Critical
2
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
17/20
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
7/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
7/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 recommendations
  • •Accessibility recommendation preview...
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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.
25/100
F
2.14 g
CO₂e / view
16.9 MB
Page Weight
5%
Cleaner Than
New Visitor
2.44 g
vs
Returning (cached)
1.22 g
Annual (10K/mo)
256.7 kg
Emission Segments
Data Center
478 mg
Network
513 mg
Device
1.15 g
Resource Breakdown
JavaScript
103.4 KB
Images
601.2 KB
CSS
997.6 KB
HTML
116.0 KB
Other
15.1 MB
Green Hosting Not Verified
Flanders Marine Institute
6 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A

Security Score

84%Very Good
Interactive

HTTPS

No WAF

80d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

23.04.2026

Valid Until

22.07.2026

Subject Alternative Names (2)

vliz.bewww.vliz.be

SHA-256 Fingerprint

A8:16:6A:AC:EB:F1:EF:45:C5:CD:D0:81:8E:87:C2:81:2D:D6:BC:C1...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🔵 1 Days(max-age=86400, public)
content-language
nl
content-length
118451
content-security-policy
upgrade-insecure-requests; script-src * 'unsafe-inline' 'uns...
content-type
text/html; charset=UTF-8
cross-origin-opener-policy
same-origin
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

98

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

vliz-be.mail.protection.outlook.com

Domain Information

vliz.be

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
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.
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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Sofia Pro

WCAG Partial
63/100
Readability
/30
24/30

20px · LH 1.50

Hierarchy
/20
18/20

2x ratio · ✓ H1→H6

WCAG
/25
10/25

1:1 min contrast

Performance
/25
11/25

1 font · 7 req

Heading Font

Sofia Pro

Sans40px

Body Font

Sofia Pro

Sans20px

Contrast Ratio

1:1

8 issues

Reading Comfort

~38 CPL

Narrow lines
40px
h1
40px
h2
28px
h3
24px
h4
20px
p

✅ Excellent readability: 20px body text is ideal for all devices.

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

❌ Very complex text: Flesch score 13/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 8 elements below WCAG AA threshold (min 1.0:1).

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

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

Buy on MyFontsFlesch 13

Color Palette

12 unique colors
18.87:1 AAA Light
#ffffff
Primary· 22.3%
#111112
Text· 6.8%
#fff8d2
Accent· 6.9%
#4e5a61
Secondary· 6.7%
#6f7f8a
Secondary· 5.6%
#f3f2ea
Primary· 2.1%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Matomo (Piwik)Mid-Market
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

24 Resources

14
Scripts
10
Styles
1
Async
2
Defer

Top Script Sources

local(13)piwik.vliz.be(1)

Website Identity

vliz.be

Location detected: 🇧🇪 Belgiumvia tld
📧 Microsoft 365nl

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Last analyzed: 02 May 2026 at 05:35

Historical Analysis & Change Tracking