natuurtijdschriften.nl

https://natuurtijdschriften.nl· First analyzed 21 May 2026· Updated 21 May 2026

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Mobile

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Hosting Provider

Leaseweb

leaseweb.com

IP Address

89.149.192.26

Site Location

🇳🇱 Netherlandsvia tld

Server Location

🇳🇱 Amsterdam, The Netherlands

ASN

AS60781

Organization

LeaseWeb Netherlands B.V

Nameservers

ns-213.awsdns-26.com.ns-747.awsdns-29.net.ns-1195.awsdns-21.org.ns-1600.awsdns-08.co.uk.

Performance

Core Web Vitals

Weight

First Contentful Paint

836 ms10%

Speed Index

1.1 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

6.1 MB

77 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Leaseweb

Technology Stack

1 Technologies Detected

CSS Frameworks

Tailwind CSS

SEO Analysis

D47/100

Meta Tags4/15

Content7/12

Headings5/8

Technical15/25

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile2/4

Indexability3/3

natuurtijdschriften.nlnatuurtijdschriften.nl

Natuurtijdschriften

No description available for this page.

Title Length19 chars

Recommended: 50-60 chars (~113px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description — important for click-through rates in SERPs
• Most images missing alt text (58/61) — critical for accessibility and SEO

11 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

5 URLs

5 sub-sitemaps

robots.txt

7 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

F30/100

Bot Access

20/25

Machine Read.

3/25

Schema Data

0/25

Citation

7/25

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

header/footer

Text ratio:2%

Words:106

Token eff.:Too Short

Sections/1K:56.6

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary25w

Descriptive Headingsavg 2.3w

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...

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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.

54/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

15/20

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

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

0/15

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.

25/100

635 mg

CO₂e / view

6.1 MB

Page Weight

Cleaner Than

New Visitor

726 mg

Returning (cached)

363 mg

Annual (10K/mo)

76.2 kg

Emission Segments

Data Center

31 mg

Network

187 mg

Device

417 mg

Resource Breakdown

JavaScript

483.8 KB

Images

5.1 MB

CSS

595.9 KB

HTML

5.7 KB

Green Hosting Verified

Leaseweb Global BV

GWF Verified

7 recommendations

•Carbon footprint recommendation preview...

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Security Score

51%Poor

Interactive

HTTPS

No WAF

73d

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/1.1

Valid From

05.05.2026

Valid Until

03.08.2026

Subject Alternative Names (1)

natuurtijdschriften.nl

SHA-256 Fingerprint

09:83:BB:03:C3:39:5A:8F:51:41:78:B7:DD:48:2A:03:0C:29:20:63...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-security-policy

frame-ancestors 'self'

content-type

text/html; charset=UTF-8

date

Thu, 21 May 2026 14:31:30 GMT

transfer-encoding

chunked

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

Domain Information

natuurtijdschriften.nl

Domain Age

18y 2m

Created

26.02.2008

Last Updated

04.12.2020

Registrar

Gandi

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

64/100

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

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

arial + Source Sans Pro

WCAG Partial

56/100

Readability

/30

18/30

28px · LH 1.07

Hierarchy

/20

12/20

1.29x ratio

WCAG

/25

15/25

1.13:1 min contrast

Performance

/25

11/25

System fonts

Heading Font

arial

Sans36px

Body Font

Source Sans Pro

Sans28px

Contrast Ratio

1.13:1

7 issues

Reading Comfort

Dual Sans-Serif

left aligned

36px

28px

Minor Second

Scale

✅ Excellent readability: 28px body text is ideal for all devices.

⚠️ Tight line spacing (1.07). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 11/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 7 elements below WCAG AA threshold (min 1.1:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

Flesch 11

Color Palette

11 unique colors

5.14:1 AA Light

#ffffff

Background· 32.8%

#76697d

Secondary· 6.1%

#5a4f68

Primary· 13.6%

#413b50

Secondary· 6.7%

#231f2d

Secondary· 5.8%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

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Scripts & Styles

6 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(1)natuurtijdschriften.nl(1)cdnjs.cloudflare.com(1)

Website Identity

natuurtijdschriften.nl

18 years old

Location detected: 🇳🇱 Netherlandsvia tld

Gandien

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Last analyzed: 21 May 2026 at 14:31

Historical Analysis & Change Tracking