nlr.nl

https://nlr.nl· First analyzed 15 May 2026· Updated 15 May 2026

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nlr.nl

Mobile

Sponsored

Hosting Provider

National Aerospace Laboratory

IP Address

137.17.231.248

Site Location

🇳🇱 Netherlandsvia tld

Server Location

🇳🇱 Kampen, The Netherlands

ASN

AS1136

Organization

National Aerospace Laboratory

Server

Nginx

Nameservers

spider.nlr.nl.nlrdns01.nlr.nl.ns2.kpn.net.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

565 ms10%

Speed Index

734 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

5.2 MB

69 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9.4

cms

Astra Childv1.0.30Custom

by Sowmedia

Technology Stack

15 Technologies Detected

Plugins

Carousel Block Getwid Gdpr Consent

WPML

Wp Media Category Management Astra Addon

Libraries

UI Components

CSS Frameworks

Icon Libraries

Analytics

Web Servers

SEO Analysis

C69/100

Meta Tags10/15

Content3/12

Headings3/8

Technical25/25

E-E-A-T2/7

Images3/7

Links4/5

URL5/5

Social4/5

Freshness4/4

Mobile3/4

Indexability3/3

nlr.nlnlr.nl

Nederlands Lucht- en Ruimtevaartcentrum

AGENDA Let’s meet! SmallSat Europe, Amsterdam 26 – 28 mei Airspace World, Lissabon 26 – 28 mei ILA Berlin 10 – 14 juni Expertiseclusters Programma’s Markten ...

Description truncated.

Title Length39 chars

Recommended: 50-60 chars (~243px / 580px)

Description Length330 chars

Recommended: 120-160 chars

Issues (3)

• Very thin content (4 words). Search engines need substantial content for ranking.
• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (32/41) — critical for accessibility and SEO

9 issues found

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Crawlability

Sitemap

Type: index

11 URLs

11 sub-sitemaps

robots.txt

2 rules

Local SEO

Local Search Readiness

24/100

Needs Work

7 11

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AI & LLM Readiness

D43/100

Bot Access

19/25

Machine Read.

7/25

Schema Data

7/25

Citation

10/25

AI Bot Access

13/14 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

Text ratio:1%

Words:845

Token eff.:Optimal

Structured Data

5 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph3/3

Twitter Card1/3

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.

82/100

Passed

Critical

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

15/15

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

ARIA & Roles

7/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

1 recommendation

•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.

27/100

665 mg

CO₂e / view

5.2 MB

Page Weight

Cleaner Than

New Visitor

760 mg

Returning (cached)

380 mg

Annual (10K/mo)

79.7 kg

Emission Segments

Data Center

148 mg

Network

160 mg

Device

357 mg

Resource Breakdown

JavaScript

112.1 KB

Images

4.8 MB

CSS

210.7 KB

Fonts

47.5 KB

HTML

41.1 KB

Other

300 B

Green Hosting Not Verified

National Aerospace Laboratory

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

76%Good

Interactive

HTTPS

No WAF

202d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

26.11.2025

Valid Until

03.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.nlr.orgnlr.org

SHA-256 Fingerprint

5B:35:CF:E3:65:A9:B3:3D:47:90:6A:F3:40:D7:00:7F:87:46:42:F4...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding

⚡ Brotli(br)

content-security-policy

default-src 'self'; connect-src 'self'; worker-src 'self' bl...

content-type

text/html; charset=UTF-8

date

Fri, 15 May 2026 03:53:03 GMT

link

<https://www.nlr.org/nl/wp-json/>; rel="https://api.w.org/",...

server

nginx

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

mx1.nlr.nl

mx2.nlr.nl

Domain Information

nlr.nl

Domain Age

39y 11m

Created

05.06.1986

Last Updated

31.03.2020

Registrar

KPN B.V.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

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.

83/100

Mobile Friendly102 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

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Cocon Light + Open Sans

WCAG Partial

66/100

Readability

/30

22/30

16px · LH 1.40

Hierarchy

/20

8/20

WCAG

/25

18/25

1:1 min contrast

Performance

/25

18/25

2 fonts · 4 req

Heading Font

Cocon Light

Sans

Body Font

Open Sans

Sans16px

Contrast Ratio

1:1

17 issues

Reading Comfort

~44 CPL

Narrow lines

32px

24px

20px

16px

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

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

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 17 elements below WCAG AA threshold (min 1.0:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

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

Buy on MyFontsFluid Type (rem)Flesch 0

Color Palette

10 unique colors

6.95:1 AA Light

#f6f6f6

Text· 8.7%

#51555a

Other· 5.6%

#506474

Secondary· 47.2%

#004c7d

Primary· 11.7%

#b7d4e9

Accent· 6%

#4a98c8

Accent· 6%

#a3aeb8

Secondary· 4.6%

#2b2322

Secondary· 4.5%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

27 Resources

Scripts

Styles

Async

Defer

Top Script Sources

nlr.org(15)eu2.snoobi.com(2)

Website Identity

Nederlands Lucht- en Ruimtevaartcentrum

Organization

www.nlr.org/

39 years old

Location detected: 🇳🇱 Netherlandsvia tld

KPN B.V.nl-NL

Social Profiles

X (Twitter)Instagram LinkedIn YouTube

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Last analyzed: 15 May 2026 at 03:53

Historical Analysis & Change Tracking