StackOptic
Back to Search
joostdevree.nl favicon

joostdevree.nl

https://joostdevree.nl· First analyzed 16 May 2026· Updated 16 May 2026
Export
joostdevree.nl
Desktop screenshot of joostdevree.nl
Mobile screenshot of joostdevree.nl
Mobile

Sponsored

Hosting Provider

Onworx BV

IP Address

188.116.45.75

Site Location

🇳🇱 Netherlandsvia tld

Server Location

🇳🇱 Zwijndrecht, The Netherlands

ASN

AS12595

Organization

Onworx BV

Server

Apache

Nameservers

web5.hsqd.nl.ns2.wanassist.nl.

Performance

97

Core Web Vitals

Weight

First Contentful Paint
1.0 s10%
Speed Index
1.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
251 KB
22 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Joomla!

Technology Stack

3 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Web Servers

1
Apachev2

SEO Analysis

C69/100
20
8
1
Meta Tags9/15
Content12/12
Headings5/8
Technical19/25
E-E-A-T5/7
Images3/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile3/4
Indexability3/3
J
joostdevree.nljoostdevree.nl

Bouwkundige Kennisbank – JoostdeVree.nl | Encyclopedie Architectuur...

JoostdeVree.nl is een onafhankelijke, niet-commerciële kennisbank met duizenden begrippen en afbeeldingen over bouwkunde, architectuur, archeologie en geologie.

Title truncated.
Title Length79 chars

Recommended: 50-60 chars (~477px / 580px)

Description Length160 chars

Recommended: 120-160 chars

Issues (1)

  • • Title is too long (79 chars, ~477px). Will be truncated in search results.

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

3,917 URLs

robots.txt

19 rules

Sitemap reference found

Local SEO

Local Search Readiness

14/100
Poor
4 13

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

Sponsored

AI & LLM Readiness

D46/100
Bot Access
20/25
Machine Read.
12/25
Schema Data
6/25
Citation
8/25

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
code blocksheader/footer
Text ratio:24%
Words:1,027
Token eff.:Optimal
Depth:2/5

Structured Data

3 JSON-LD
Organization×1.1WebSiteSearchAction

Citation Readiness

Opening Summary221w
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 (8)
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.
A
83/100
14
Passed
2
Critical
1
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
10/15
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
10/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 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.
85/100
A+
25 mg
CO₂e / view
251.5 KB
Page Weight
95%
Cleaner Than
New Visitor
29 mg
vs
Returning (cached)
15 mg
Annual (10K/mo)
3.0 kg
Emission Segments
Data Center
1 mg
Network
8 mg
Device
17 mg
Resource Breakdown
JavaScript
11.5 KB
Images
1.9 KB
CSS
228.5 KB
HTML
9.6 KB
Green Hosting Verified
HostingSquad
GWF Verified
1 recommendation
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

31%Critical
Interactive

HTTPS

No WAF

81d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp384r1) (384 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

Valid From

07.05.2026

Valid Until

05.08.2026

Subject Alternative Names (2)

*.joostdevree.nljoostdevree.nl

SHA-256 Fingerprint

46:89:1C:BD:E8:80:EF:D5:4A:D7:0B:0E:AF:4D:83:87:F7:69:62:B4...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges
bytes
content-encoding
📦 Gzip(gzip)
content-length
393
content-type
text/html
date
Sat, 16 May 2026 02:26:17 GMT
etag
"3a5-6407e57376023-gzip"
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

mail.joostdevree.nl

Domain Information

joostdevree.nl

Domain Age
25y 5m

Created

27.11.2000

Last Updated

12.07.2023

Registrar

Xynta Hosting B.V.

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.
B
70/100
Mobile Friendly2 breakpoints
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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

-apple-system + Times New Roman

WCAG AA
73/100
Readability
/30
20/30

16px · LH 1.10

Hierarchy
/20
11/20

1.88x ratio

WCAG
/25
23/25

4.59:1 min contrast

Performance
/25
19/25

System fonts

Heading Font

-apple-system

Sans30px

Body Font

Times New Roman

Serif16px

Contrast Ratio

4.59:1

WCAG AA (≥4.5:1)

Reading Comfort

~32 CPL

Narrow lines
30px
h1
18px
h4
16px
p

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

⚠️ Tight line spacing (1.10). Increase to 1.4–1.6 for better readability.

⚠️ Hard to read: Flesch score 32/100. Simplify sentences for wider reach.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 4.6:1).

❌ Broken heading hierarchy: 2 level skip(s). Screen readers rely on sequential headings (h1→h2→h3).

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

Fluid Type (rem)Flesch 32

Color Palette

7 unique colors
Light
#eeeeee
Background· 32.400000000000006%
#038180
Accent· 38.7%
#ffffff
Primary· 0%
#074747
Accent· 15.6%
#679288
Secondary· 4.7%
#d3d2ba
Secondary· 4.6%
#f4f49b
Accent· 3%
#36605d
Secondary· 1%

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

Sponsored

Scripts & Styles

15 Resources

7
Scripts
8
Styles
1
Async
1
Defer

Top Script Sources

local(6)scripts.simpleanalyticscdn.com(1)

Website Identity

Joost de Vree

Organization

JoostdeVree.nl is een onafhankelijke, niet-commerciële kennisbank met duizenden begrippen en afbeeldingen over bouwkunde, architectuur, archeologie en geologie.

www.joostdevree.nl/
25 years old
Location detected: 🇳🇱 Netherlandsvia tld
Xynta Hosting B.V.nl-nl

Sponsored

Last analyzed: 16 May 2026 at 02:26

Historical Analysis & Change Tracking