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coronacheck.nl

https://coronacheck.nl· First analyzed 28 May 2026· Updated 28 May 2026
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coronacheck.nl
Desktop screenshot of coronacheck.nl
Mobile screenshot of coronacheck.nl
Mobile

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Hosting Provider

Vimexx Shared

IP Address

185.104.29.170

Site Location

🇳🇱 Netherlandsvia tld

Server Location

🇳🇱 Amsterdam, The Netherlands

ASN

AS206281

Organization

Vimexx Shared

Server

Nginx

Nameservers

ns0.rijksoverheidnl.com.ns2.rijksoverheidnl.eu.ns1.rijksoverheidnl.nl.ns3.rijksoverheidnl.org.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
503 ms10%
Speed Index
654 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
547 KB
32 requests

Image Optimization

Responsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Vimexx Shared

Technology Stack

2 Technologies Detected

Libraries

1
jQuery UI

Web Servers

1
Nginx

SEO Analysis

C67/100
19
5
1
Meta Tags10/15
Content10/12
Headings8/8
Technical18/25
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
C
coronacheck.nlcoronacheck.nl

Coronavirus COVID-19 | Rijksoverheid.nl

Actuele informatie over het coronavirus COVID-19. Zoals adviezen om luchtweginfecties te voorkomen.

Title Length39 chars

Recommended: 50-60 chars (~227px / 580px)

Description Length99 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (11/12) — critical for accessibility and SEO

6 issues found

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Crawlability

Sitemap

Type: standard

6 URLs

robots.txt

5 rules

Sitemap reference found

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.

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AI & LLM Readiness

F36/100
Bot Access
20/25
Machine Read.
5/25
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:10%
Words:288
Token eff.:Too Short
Sections/1K:72.9
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary10w
Descriptive Headingsavg 2.8w
Canonical URL
Open Graph2/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
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
83/100
13
Passed
2
Critical
0
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
9/15
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.
1 recommendation
  • •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.
71/100
A
55 mg
CO₂e / view
547.3 KB
Page Weight
80%
Cleaner Than
New Visitor
63 mg
vs
Returning (cached)
32 mg
Annual (10K/mo)
6.6 kg
Emission Segments
Data Center
3 mg
Network
16 mg
Device
36 mg
Resource Breakdown
JavaScript
63.0 KB
Images
168.4 KB
CSS
309.8 KB
HTML
6.0 KB
Green Hosting Verified
Vimexx
GWF Verified
4 recommendations
  • •Carbon footprint recommendation preview...
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A

Security Score

81%Very Good
Interactive

HTTPS

No WAF

48d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Ireland Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

16.07.2025

Valid Until

15.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (9)

rijksoverheid.nlwww.rijksoverheid.nlopendata.rijksoverheid.nlfeeds.rijksoverheid.nlstatic.rijksoverheid.nlgovernment.nlwww.government.nlopendata.government.nl+1 more

SHA-256 Fingerprint

4E:25:C8:AD:D5:53:F5:6D:75:22:D1:49:F7:F7:25:E6:2B:22:76:FD...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding
📦 Gzip(gzip)
content-security-policy
default-src 'self'; base-uri 'self'; script-src 'self' 'nonc...
content-type
text/html;charset=UTF-8
date
Thu, 28 May 2026 10:14:39 GMT
referrer-policy
strict-origin-when-cross-origin
server
nginx
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

75

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

Domain Information

coronacheck.nl

Domain Age
6y 3m

Created

25.02.2020

Last Updated

09.09.2021

Registrar

Rijksoverheid

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.
D
57/100
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

RO Sans

WCAG Partial
70/100
Readability
/30
22/30

18px · LH 1.33

Hierarchy
/20
17/20

1.8x ratio · ✓ H1→H6

WCAG
/25
18/25

2.06:1 min contrast

Performance
/25
13/25

1 font · 5 req

Heading Font

RO Sans

Sans32px

Body Font

RO Sans

Sans18px

Contrast Ratio

2.06:1

1 issue

Reading Comfort

~39 CPL

Narrow lines
32px
h1
29px
h2
26px
h3
18px
p

✅ Excellent readability: 18px 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: 1 elements below WCAG AA threshold (min 2.1:1).

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

⚠️ Fluid type without rem: clamp() detected but missing rem units. May fail WCAG 1.4.4 zoom test.

Buy on MyFontsFluid TypeFlesch 0

Color Palette

10 unique colors
5.51:1 AA Light
#ffffff
Background· 23.3%
#6a686d
Other· 3.5%
#896154
Primary· 17%
#0f1b2a
Secondary· 11.5%
#163a63
Accent· 9.3%
#ded3d2
Secondary· 5.9%
#a87b71
Secondary· 5.8%
#6b4a46
Secondary· 2.9%

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

9 Resources

7
Scripts
2
Styles
5
Async
1
Defer

Top Script Sources

local(4)statistiek.rijksoverheid.nl(2)survey-deploy.platformrijksoverheid.nl(1)

Website Identity

coronacheck.nl

6 years old
Location detected: 🇳🇱 Netherlandsvia tld
Rijksoverheidnl-NL

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Last analyzed: 28 May 2026 at 10:14

Historical Analysis & Change Tracking