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delpher.nl

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

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Hosting Provider

Konbib

IP Address

195.169.50.8

Site Location

🇳🇱 Netherlandsvia tld

Server Location

🇳🇱 Huissen, Netherlands

ASN

AS1103

Organization

Konbib

Server

Apache

Nameservers

ns1.zurich.surf.net.ns1.surfnet.nl.

Performance

83

Core Web Vitals

Weight

First Contentful Paint
1.9 s10%
Speed Index
2.5 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.5 MB
27 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Drupal

Technology Stack

3 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Analytics

1
Matomo

Web Servers

1
Apache

SEO Analysis

C65/100
18
7
1
Meta Tags14/15
Content9/12
Headings8/8
Technical16/25
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
D
delpher.nldelpher.nl

Delpher » Kranten, Boeken & Tijdschriften

Ruim 130.000.000 pagina's uit Nederlandse kranten, boeken en tijdschriften ✓ In zijn geheel te lezen ✓ Digitaal te doorzoeken ✓ Gratis toegankelijk ➜ Delpher.nl

Title Length41 chars

Recommended: 50-60 chars (~245px / 580px)

Description Length160 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (9/10) — critical for accessibility and SEO

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

624 URLs

624 sub-sitemaps

robots.txt

72 rules

Sitemap reference found

Allows all crawlers

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

F24/100
Bot Access
3/25
Machine Read.
11/25
Schema Data
3/25
Citation
7/25

AI Bot Access

0/14 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
navheader/footer
Text ratio:6%
Words:338
Token eff.:Optimal
Sections/1K:35.5
Depth:2/5

Structured Data

1 JSON-LD
WebSiteSearchAction

Citation Readiness

Opening Summary18w
Descriptive Headingsavg 2.9w
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...
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
82/100
13
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
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
9/15
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...
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.
28/100
C
194 mg
CO₂e / view
1.5 MB
Page Weight
60%
Cleaner Than
New Visitor
222 mg
vs
Returning (cached)
111 mg
Annual (10K/mo)
23.3 kg
Emission Segments
Data Center
43 mg
Network
47 mg
Device
104 mg
Resource Breakdown
JavaScript
647.9 KB
Images
80.0 KB
CSS
717.7 KB
HTML
36.9 KB
Other
85.2 KB
Green Hosting Not Verified
Konbib
7 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

56%Poor
Interactive

HTTPS

No WAF

202d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

ECDSA (secp384r1) (384 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

18.11.2025

Valid Until

18.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.delpher.nldelpher.nl

SHA-256 Fingerprint

C9:EF:95:A6:B6:94:09:0C:C7:95:E6:99:A1:C9:1F:95:83:38:DB:07...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-store, no-cache, must-revalidate)
connection
Keep-Alive
content-security-policy
frame-ancestors 'none';
content-type
text/html; charset=UTF-8
date
Wed, 29 Apr 2026 22:44:47 GMT
expires
Thu, 19 Nov 1981 08:52:00 GMT
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

90

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

delpher-nl.mail.protection.outlook.com

Domain Information

delpher.nl

Domain Age
12y 11m

Created

16.05.2013

Last Updated

05.03.2026

Registrar

SURF B.V.

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

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
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...
Upgrade to view recommendations

Typography & Readability

FFDINRoundMedium + FFDINRoundRegular

WCAG Partial
68/100
Readability
/30
24/30

20px · LH 1.40

Hierarchy
/20
14/20

1.5x ratio · ✓ H1→H6

WCAG
/25
15/25

1.38:1 min contrast

Performance
/25
15/25

System fonts

Heading Font

FFDINRoundMedium

Sans30px

Body Font

FFDINRoundRegular

Sans20px

Contrast Ratio

1.38:1

2 issues

Reading Comfort

Dual Sans-Serif

left aligned
30px
h1
30px
h2
20px
p
Minor Second
Scale

✅ Excellent readability: 20px body text is ideal for all devices.

✅ Optimal line spacing: 1.40 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 48/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 1.4:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

✅ System fonts: Zero font loading delay — best possible LCP impact.

Buy on MyFontsFlesch 48

Color Palette

7 unique colors
Dark
#746f7c
Other· 2.9%
#9ddbda
Primary· 57.800000000000004%
#f1fbfc
Primary· 14.200000000000001%
#01415c
Primary· 11.799999999999999%
#ccbcbc
Secondary· 8.5%
#8dc7c7
Secondary· 4.1%
#c7e9e8
Secondary· 0.8%

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

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Scripts & Styles

9 Resources

6
Scripts
3
Styles
2
Async
1
Defer

Top Script Sources

webstatistieken.kb.nl(2)local(2)cdnjs.cloudflare.com(1)cdn.jsdelivr.net(1)

Website Identity

delpher.nl

12 years old
Location detected: 🇳🇱 Netherlandsvia tld
SURF B.V.📧 Microsoft 365nl

Social Profiles

Facebook

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Last analyzed: 29 Apr 2026 at 22:45

Historical Analysis & Change Tracking