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vanstockum.nl

https://vanstockum.nl· First analyzed 02 Jun 2026· Updated 02 Jun 2026
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vanstockum.nl
Desktop screenshot of vanstockum.nl
Mobile screenshot of vanstockum.nl
Mobile

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Hosting Provider

Onworx BV

IP Address

185.117.226.70

Site Location

🇳🇱 Netherlandsvia tld

Server Location

🇳🇱 Zwijndrecht, The Netherlands

ASN

AS12595

Organization

Onworx BV

Server

Nginx

Nameservers

ns1.naamservert.nl.ns2.naamservert.nl.

Performance

93

Core Web Vitals

Weight

First Contentful Paint
1.3 s10%
Speed Index
1.7 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.2 MB
113 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Onworx BV

Technology Stack

9 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Facebook Pixel

Libraries

1
jQuery

UI Components

1
Swiper

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginx

SEO Analysis

C63/100
18
5
1
Meta Tags8/15
Content9/12
Headings6/8
Technical16/25
E-E-A-T0/7
Images5/7
Links5/5
URL5/5
Social2/5
Freshness0/4
Mobile4/4
Indexability3/3
V
vanstockum.nlvanstockum.nl

Boekhandel De Vries Van Stockum | Haarlem en Den Haag | De Vries Va...

De Vries Van Stockum is een historische boekhandel met winkels in Den Haag en Haarlem en een webshop. Een onafhankelijke familiebedrijf - en al meer dan een ...

Title truncated. Description truncated.
Title Length76 chars

Recommended: 50-60 chars (~466px / 580px)

Description Length189 chars

Recommended: 120-160 chars

Issues (1)

  • • Title is too long (76 chars, ~466px). Will be truncated in search results.

6 issues found

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Crawlability

Sitemap
robots.txt

25 rules

Local SEO

Local Search Readiness

7/100
Poor
2 14 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

F22/100
Bot Access
16/25
Machine Read.
1/25
Schema Data
0/25
Citation
5/25

AI Bot Access

10/14 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:3%
Words:5,214
Token eff.:Excessive
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary
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.
B
71/100
9
Passed
4
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
10/20
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
5/15
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...
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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.
52/100
B
125 mg
CO₂e / view
1.2 MB
Page Weight
70%
Cleaner Than
New Visitor
143 mg
vs
Returning (cached)
71 mg
Annual (10K/mo)
15.0 kg
Emission Segments
Data Center
6 mg
Network
37 mg
Device
82 mg
Resource Breakdown
JavaScript
246.2 KB
Images
511.3 KB
CSS
267.4 KB
Fonts
123.5 KB
HTML
85.6 KB
Other
3.7 KB
Green Hosting Verified
xYnta
GWF Verified
5 recommendations
  • •Carbon footprint recommendation preview...
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F

Security Score

36%Critical
Interactive

HTTPS

No WAF

62d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

05.05.2026

Valid Until

03.08.2026

Subject Alternative Names (2)

devriesvanstockum.nlwww.devriesvanstockum.nl

SHA-256 Fingerprint

E1:2B:17:2C:7F:0C:BF:92:BF:63:8A:6C:DC:F8:B8:03:69:DF:A7:95...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-cache, private)
content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=utf-8
date
Tue, 02 Jun 2026 01:49:31 GMT
server
nginx
strict-transport-security
max-age=31536000; includeSubDomains; preload
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

75

SPF
DKIM
DMARC

MX Records (1)

mail.vanstockum.nl

Domain Information

vanstockum.nl

Domain Age
28y 8m

Created

19.09.1997

Last Updated

24.05.2026

Registrar

Xynta Hosting B.V.

DNSSEC
Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner
Cookiebot
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Cookiebot
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.
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=1.0
2 recommendations
  • •Mobile compatibility recommendation preview...
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Typography & Readability

font-template

WCAG Partial
65/100
Readability
/30
23/30

14px · LH 1.57

Hierarchy
/20
8/20

1.43x ratio

WCAG
/25
16/25

1:1 min contrast

Performance
/25
18/25

1 font · 5 req

Heading Font

font-template

Sans20px

Body Font

font-template

Sans14px

Contrast Ratio

1:1

22 issues

Reading Comfort

~46 CPL

Optimal (45–75)
20px
h1
47px
h2
16px
h3
17px
h4
14px
p
Major Second
Scale

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.57 ratio (ideal range 1.4–1.6).

✅ Optimal line length: ~46 chars/line (ideal 45–75 CPL).

❌ Very complex text: Flesch score 17/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 22 elements below WCAG AA threshold (min 1.0:1).

⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

GGoogle FontsBuy on MyFontsFlesch 17

Color Palette

9 unique colors
12.23:1 AAA Light
#ffffff
Background· 39.699999999999996%
#313639
Text· 10.4%
#5c5042
Secondary· 6.2%
#dcdad4
Secondary· 5.6%
#aea299
Secondary· 4.1%

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

2
Google AnalyticsFree
Google Tag ManagerFree

User behavior and product analytics

Advertising

1
Facebook PixelMid-Market

Ad platforms and retargeting pixels

Social Media

1
Twitter/X WidgetsFree

Social widgets and sharing tools

3

Categories

4

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Well-developed marketing technology stack

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Scripts & Styles

17 Resources

12
Scripts
5
Styles
6
Async
6
Defer

Top Script Sources

cdn.belco.io(4)local(4)connect.facebook.net(2)googletagmanager.com(1)widget-portal.givacard.nl(1)

Website Identity

vanstockum.nl

28 years old
Location detected: 🇳🇱 Netherlandsvia tld
Xynta Hosting B.V.nl

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Last analyzed: 02 Jun 2026 at 01:49

Historical Analysis & Change Tracking

vanstockum.nl Technology Stack - Built With jQuery, Swiper, Tailwind CSS, Google Fonts, Google Analytics | StackOptic | StackOptic