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harmonie.nl

https://harmonie.nl· First analyzed 31 May 2026· Updated 31 May 2026
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harmonie.nl
Desktop screenshot of harmonie.nl
Mobile screenshot of harmonie.nl
Mobile

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Hosting Provider

Osso B.V.

IP Address

217.21.205.238

Site Location

🇳🇱 Leeuwarden, Netherlandsvia schema_nap

Server Location

🇳🇱 Haren, Netherlands

ASN

AS43366

Server

Nginx

CDN

Proxy Cache

Nameservers

ns1.transip.nl.ns2.transip.eu.ns0.transip.net.

Performance

93

Core Web Vitals

Weight

First Contentful Paint
1.3 s10%
Speed Index
1.6 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
668 KB
58 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Osso B.V.
CDN
Proxy Cache

Technology Stack

11 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Microsoft Clarity

UI Components

2
Slick CarouselLightbox

Libraries

1
jQueryv3.4.1

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginxv1.18.0

SEO Analysis

C60/100
17
9
2
Meta Tags8/15
Content8/12
Headings3/8
Technical16/25
E-E-A-T5/7
Images1/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile1/4
Indexability3/3
H
harmonie.nlharmonie.nl

Stadsschouwburg De Harmonie

Bekijk welke voorstellingen we op onze agenda hebben staan en bestel! De officiële aanbieder van tickets.

Title Length27 chars

Recommended: 50-60 chars (~170px / 580px)

Description Length105 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (20/20) — critical for accessibility and SEO

11 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

2 rules

Allows all crawlers

Local SEO

Local Search Readiness

32/100
Needs Work
9 11

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AI & LLM Readiness

D45/100
Bot Access
20/25
Machine Read.
12/25
Schema Data
3/25
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.txtinvalid
llms-full.txt
Semantic HTML
Heading Hierarchy
Text ratio:3%
Words:1,202
Token eff.:Optimal

Structured Data

1 JSON-LD
Organization×1.1
sameAs entity links

Citation Readiness

Opening Summary
Descriptive Headings
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (9)
AI readiness recommendation preview...
Upgrade to view recommendations

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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.
D
46/100
9
Passed
6
Critical
2
Warnings
Images & Alt Text
5/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
7/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
5/15
Verifies form fields have labels, error messages are clear, and inputs are properly associated.
Color & Contrast
14/15
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.
4 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.
46/100
B
83 mg
CO₂e / view
668.4 KB
Page Weight
80%
Cleaner Than
New Visitor
95 mg
vs
Returning (cached)
47 mg
Annual (10K/mo)
9.9 kg
Emission Segments
Data Center
19 mg
Network
20 mg
Device
44 mg
Resource Breakdown
JavaScript
145.3 KB
Images
28.8 KB
CSS
455.4 KB
Fonts
2.3 KB
HTML
36.7 KB
Green Hosting Not Verified
Osso B.V.
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

21%Critical
Interactive

HTTPS

No WAF

62d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

04.05.2026

Valid Until

02.08.2026

Subject Alternative Names (2)

*.harmonie.nlharmonie.nl

SHA-256 Fingerprint

AC:87:74:13:94:26:C5:0F:35:FF:03:4A:03:92:84:1A:26:DD:90:F2...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🟣 Private(private, must-revalidate)
content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=UTF-8
date
Sun, 31 May 2026 22:13:55 GMT
expires
-1
pragma
no-cache
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

95

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

harmonie-nl.mail.protection.outlook.com

Domain Information

harmonie.nl

Domain Age
27y 2m

Created

12.03.1999

Last Updated

06.11.2021

Registrar

team.blue nl B.V.

DNSSEC
Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner
Cookiebot
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Cookiebot
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.
D
49/100
Not 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, maximum-scale=1, user-scalable=no
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Baikal + Times New Roman

WCAG Partial
61/100
Readability
/30
21/30

16px · LH 1.63

Hierarchy
/20
6/20
WCAG
/25
16/25

1:1 min contrast

Performance
/25
18/25

3 fonts · 3 req

Heading Font

Baikal

Sans

Body Font

Times New Roman

Serif16px

Contrast Ratio

1:1

8 issues

Reading Comfort

Sans Headlines + Serif Body

left aligned
32px
h2
32px
h3
24px
h4
16px
p

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

❌ Very complex text: Flesch score 28/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 8 elements below WCAG AA threshold (min 1.0:1).

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

✅ Smart font loading: font-display: swap prevents invisible text during load (FOIT).

✅ Variable fonts: Single file replaces multiple weights — better performance & flexibility.

GGoogle FontsBuy on MyFontsVariable FontsFlesch 28

Color Palette

11 unique colors
4.17:1 AA Large Light
#ffffff
Background· 37.39999999999999%
#7b7c80
Other· 10.9%
#371b55
Accent· 15%
#1b1b3d
Secondary· 7.3%
#0d1026
Primary· 6%
#41132b
Accent· 4.3%
#645063
Secondary· 4.1%

Business & Marketing Stack

3 Tools Detected

Growing

Behavior Analytics

3
Google AnalyticsFree
Microsoft ClarityFree
Google Tag ManagerFree

User behavior and product analytics

1

Categories

3

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

21 Resources

13
Scripts
8
Styles
3
Async
0
Defer

Top Script Sources

cdn.jsdelivr.net(3)code.jquery.com(2)harmonie.nl(2)scripts.clarity.ms(1)clarity.ms(1)

Website Identity

Stadsschouwburg De Harmonie

Stadsschouwburg De Harmonie

Organization

Bekijk welke voorstellingen we op onze agenda hebben staan en bestel! De officiële aanbieder van tickets.

[email protected]
0582330230 
27 years old

Ruiterskwartier 4, Leeuwarden

8911, Leeuwarden, BP

NL

Location detected: 🇳🇱 Netherlands, Leeuwardenvia schema_nap
team.blue nl B.V.📧 Microsoft 365nl

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Last analyzed: 31 May 2026 at 22:14

Historical Analysis & Change Tracking