vanderkrogt.net

https://vanderkrogt.net· First analyzed 10 May 2026· Updated 10 May 2026

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vanderkrogt.net

Mobile

Sponsored

Hosting Provider

PCextreme

IP Address

92.63.168.178

Site Location

🇳🇱 Netherlandsvia ip

Server Location

🇳🇱 Amsterdam, The Netherlands

ASN

AS48635

Organization

PCextreme

Server

Nginx

Nameservers

ns-r.dns.yourhosting.nu.ns-b.dns.yourhosting.eu.ns-m.dns.yourhosting.nl.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

273 ms10%

Speed Index

355 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

42 KB

24 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

PCextreme

Technology Stack

2 Technologies Detected

CSS Frameworks

Tailwind CSS

Web Servers

Nginx

SEO Analysis

F26/100

Meta Tags4/15

Content6/12

Headings0/8

Technical4/21

E-E-A-T0/7

Images1/7

Links2/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

vanderkrogt.netvanderkrogt.net

vanderkrogt.net

No description available for this page.

Title Length15 chars

Recommended: 50-60 chars (~90px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (4)

• Missing meta description — important for click-through rates in SERPs
• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (12/12) — critical for accessibility and SEO

18 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

Local SEO

Local Search Readiness

0/100

Poor

15 2

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

Sponsored

AI & LLM Readiness

F31/100

Bot Access

20/25

Machine Read.

6/25

Schema Data

0/25

Citation

5/25

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.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:6%

Words:159

Token eff.:Too Short

Structured Data

No Schema

Citation Readiness

Opening Summary96w

Descriptive Headings

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

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.

60/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

3/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

5/15

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.

4 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.

55/100

A+

5 mg

CO₂e / view

42.3 KB

Page Weight

95%

Cleaner Than

New Visitor

6 mg

Returning (cached)

3 mg

Annual (10K/mo)

624 g

Emission Segments

Data Center

1 mg

Network

1 mg

Device

3 mg

Resource Breakdown

Images

31.9 KB

HTML

2.3 KB

Other

8.2 KB

Green Hosting Not Verified

PCextreme

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

67d

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

18.04.2026

Valid Until

17.07.2026

Subject Alternative Names (2)

vanderkrogt.netwww.vanderkrogt.net

SHA-256 Fingerprint

75:AE:38:EC:13:5C:CB:C2:69:9D:FE:95:9B:C0:67:10:0D:F9:34:8A...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding

⚡ Brotli(br)

content-type

text/html

date

Sun, 10 May 2026 10:50:11 GMT

etag

W/"6900a2fc-1e40"

last-modified

Tue, 28 Oct 2025 11:03:24 GMT

server

nginx

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

fallback.yourfilter.nl

primary.yourfilter.nl

Domain Information

vanderkrogt.net

Domain Age

25 years

Created

22.04.2001

Expires

22.04.2027

Last Updated

22.04.2026

Registrar

Hosting Concepts B.V. d/b/a Registrar.eu

DNSSEC

Not Enabled

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.

30/100

Not 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.

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Times New Roman

WCAG AAA

65/100

Readability

/30

20/30

16px · LH --

Hierarchy

/20

10/20

WCAG

/25

21/25

8.59:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Times New Roman

Body Font

Times New Roman

Serif16px

Contrast Ratio

8.59:1

WCAG AAA (≥7:1)

Reading Comfort

~41 CPL

Narrow lines

16px

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

❌ Very complex text: Flesch score 5/100. Consider shorter sentences and simpler words.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 8.6:1).

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

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFontsFlesch 5

Color Palette

4 unique colors

Light

#dfdcdd

Other· 3.3%

#f1f0ed

Primary· 82.10000000000001%

#6a5e73

Secondary· 7.8%

#b0b3c6

Secondary· 6.9%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

5 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cse.google.com(2)google.com(1)

Website Identity

vanderkrogt.net

25 years old

Location detected: 🇳🇱 Netherlandsvia ip

Hosting Concepts B.V. d/b/a Registrar.eu

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Last analyzed: 10 May 2026 at 10:50

Historical Analysis & Change Tracking