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nji.nl

https://nji.nl· First analyzed 29 Apr 2026· Updated 29 Apr 2026
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nji.nl
Desktop screenshot of nji.nl
Mobile screenshot of nji.nl
Mobile

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Hosting Provider

True B.V

IP Address

87.233.198.7

Site Location

🇳🇱 Netherlandsvia tld

Server Location

🇳🇱 Amsterdam, The Netherlands

ASN

AS15703

Organization

True B.V

CDN

Cloudflare

WAF

Cloudflare

Nameservers

brett.ns.cloudflare.com.zoe.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
599 ms10%
Speed Index
779 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
592 KB
41 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
True B.V
CDN
Cloudflare

Technology Stack

7 Technologies Detected

Analytics

4
Google Analytics
Google Analytics 4
Hotjar
Matomo

Libraries

1
jQuery

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

SEO Analysis

C67/100
18
7
1
Meta Tags12/15
Content11/12
Headings8/8
Technical17/25
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile3/4
Indexability3/3
N
nji.nlnji.nl

Nederlands Jeugdinstituut | Nationaal kenniscentrum over opgroeien

Het Nederlands Jeugdinstituut (NJi) is een nationaal kenniscentrum dat actuele kennis over opvoeden en opgroeien verzamelt, verrijkt, duidt en deelt.

Title Length66 chars

Recommended: 50-60 chars (~394px / 580px)

Description Length149 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (6/9) — critical for accessibility and SEO

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

3 URLs

3 sub-sitemaps

robots.txt

36 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.

Sponsored

AI & LLM Readiness

D41/100
Bot Access
20/25
Machine Read.
11/25
Schema Data
0/25
Citation
10/25

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:8%
Words:1,655
Token eff.:Optimal
Sections/1K:7.3
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary1089w
Descriptive Headingsavg 4.5w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
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.
B
74/100
13
Passed
2
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
2/15
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
9/15
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.
60/100
A
73 mg
CO₂e / view
592.3 KB
Page Weight
80%
Cleaner Than
New Visitor
84 mg
vs
Returning (cached)
42 mg
Annual (10K/mo)
8.8 kg
Emission Segments
Data Center
16 mg
Network
18 mg
Device
39 mg
Resource Breakdown
JavaScript
83.9 KB
Images
377.7 KB
CSS
118.1 KB
HTML
12.6 KB
Green Hosting Not Verified
True B.V
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
C

Security Score

61%Fair
Interactive

HTTPS

No WAF

47d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

18.03.2026

Valid Until

16.06.2026

Subject Alternative Names (2)

nji.nlwww.nji.nl

SHA-256 Fingerprint

56:1B:0A:92:94:89:F8:80:3A:B7:AE:18:E9:53:0A:E2:9E:DE:47:6E...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🟡 60s(max-age=60, public)
content-encoding
📦 Gzip(gzip)
content-language
nl
content-type
text/html; charset=UTF-8
date
Wed, 29 Apr 2026 11:09:37 GMT
etag
W/"1777456897"
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

100

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

nji-nl.o-v1.mx.microsoft

Domain Information

nji.nl

Domain Age
26y 1m

Created

27.03.2000

Last Updated

21.09.2021

Registrar

Stichting Sekondant

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
75/100
Mobile Friendly23 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=1.0
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Unit Rounded Pro

WCAG Partial
65/100
Readability
/30
17/30

14px · LH 1.50

Hierarchy
/20
18/20

3.43x ratio · ✓ H1→H6

WCAG
/25
17/25

1:1 min contrast

Performance
/25
13/25

1 font · 4 req

Heading Font

Unit Rounded Pro

Sans48px

Body Font

Unit Rounded Pro

Sans14px

Contrast Ratio

1:1

3 issues

Reading Comfort

~36 CPL

Narrow lines
48px
h1
40px
h2
24px
h3
14px
p

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

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

⚠️ Hard to read: Flesch score 30/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 3 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 3.4x larger than body text.

Buy on MyFontsFlesch 30

Color Palette

10 unique colors
2.28:1 Fail Light
#bfbfbf
Other· 29.5%
#807b73
Other· 4.8%
#66472f
Primary· 9%
#021a35
Accent· 6.7%
#191d26
Secondary· 5.9%
#1c3545
Secondary· 5.3%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

17 Resources

15
Scripts
2
Styles
6
Async
1
Defer

Top Script Sources

local(7)nji.containers.piwik.pro(2)googletagmanager.com(2)consent.studio(2)cdn.jsdelivr.net(2)

Website Identity

nji.nl

26 years old
Location detected: 🇳🇱 Netherlandsvia tld
Stichting Sekondantnl

Sponsored

Last analyzed: 29 Apr 2026 at 11:09

Historical Analysis & Change Tracking