lantarenvenster.nl

https://lantarenvenster.nl· First analyzed 19 May 2026· Updated 19 May 2026

Export

lantarenvenster.nl

Mobile

Sponsored

Hosting Provider

Exonet

IP Address

178.22.60.159

Site Location

🇳🇱 Netherlandsvia phone

Server Location

🇳🇱 Zevenaar, The Netherlands

ASN

AS12859

CDN

Nameservers

ns1.digitalocean.com.ns2.digitalocean.com.ns3.digitalocean.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

668 ms10%

Speed Index

868 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

12.1 MB

225 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.2.9

cms

LantarenVensterv4.5.3Custom

by Menno Luitjes & Jeroen Schmit

View Theme

Technology Stack

14 Technologies Detected

Plugins

Mennolui Activetickets For Theatre 3Ad3Eea253E5 Yikes Inc Easy Mailchimp Extender Url Shortify Premium

Disable Gravity Forms Fields

Analytics

Libraries

Other

CSS Frameworks

Icon Libraries

Tag Managers

Payments

SEO Analysis

B78/100

Meta Tags14/15

Content10/12

Headings3/8

Technical24/25

E-E-A-T2/7

Images3/7

Links2/5

URL5/5

Social5/5

Freshness4/4

Mobile3/4

Indexability3/3

lantarenvenster.nllantarenvenster.nl

LantarenVenster | bioscoop, jazzpodium en restaurant in Rotterdam

LantarenVenster is het theater voor film en jazz in Rotterdam. Met de vele filmvoorstellingen, concerten en festivals is er altijd wat te beleven.

Title Length65 chars

Recommended: 50-60 chars (~397px / 580px)

Description Length146 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (421/484) — critical for accessibility and SEO

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

14 URLs

14 sub-sitemaps

robots.txt

4 rules

Sitemap reference found

Local SEO

Local Search Readiness

30/100

Needs Work

9 9

Sponsored

AI & LLM Readiness

D44/100

Bot Access

20/25

Machine Read.

1/25

Schema Data

7/25

Citation

16/25

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

Text ratio:15%

Words:22,667

Token eff.:Excessive

Structured Data

3 JSON-LD

Organization×1.1WebSiteSearchAction

sameAs entity links

Citation Readiness

Opening Summary115w

Descriptive Headingsavg 3.6w

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...

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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.

64/100

Passed

Critical

Warnings

Images & Alt Text

10/20

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

Semantic Structure

11/20

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

11/15

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.

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.

35/100

1.26 g

CO₂e / view

12.1 MB

Page Weight

Cleaner Than

New Visitor

1.43 g

Returning (cached)

717 mg

Annual (10K/mo)

150.6 kg

Emission Segments

Data Center

62 mg

Network

369 mg

Device

825 mg

Resource Breakdown

JavaScript

123.5 KB

Images

11.8 MB

CSS

137.5 KB

HTML

77.0 KB

Green Hosting Verified

BIT

GWF Verified

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

18d

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/1.1

Valid From

09.03.2026

Valid Until

07.06.2026

Subject Alternative Names (2)

lantarenvenster.nlwww.lantarenvenster.nl

SHA-256 Fingerprint

E3:80:FF:DB:D2:77:54:F0:B9:9B:29:44:4E:A4:F6:DD:36:A6:53:ED...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

access-control-allow-origin

age

726

cache-control

🟡 900s(max-age=900, public)

content-encoding

📦 Gzip(gzip)

content-length

78582

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

lantarenvenster-nl.mail.protection.outlook.com

Domain Information

lantarenvenster.nl

Domain Age

20y 10m

Created

25.07.2005

Last Updated

19.03.2024

Registrar

NETIM

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Legitimate interest basis mentioned

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.

76/100

Mobile Friendly24 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, maximum-scale=1.0, user-scalable=0

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

LanThermo + CourierSans

WCAG Partial

60/100

Readability

/30

18/30

15px · LH 1.40

Hierarchy

/20

8/20

WCAG

/25

19/25

2.32:1 min contrast

Performance

/25

15/25

2 fonts · 3 req

Heading Font

LanThermo

Sans

Body Font

CourierSans

Sans15px

Contrast Ratio

2.32:1

2 issues

Reading Comfort

~52 CPL

Optimal (45–75)

79px

28px

23px

15px

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

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

✅ Optimal line length: ~52 chars/line (ideal 45–75 CPL).

❌ Very complex text: Flesch score 13/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 2.3:1).

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

Buy on MyFontsFlesch 13

Color Palette

7 unique colors

19.15:1 AAA Dark

#010101

Primary· 42.00000000000001%

#f5f5f5

Background· 26.4%

#63243b

Secondary· 7.4%

#abbed0

Secondary· 6.3%

#ded0d4

Secondary· 6%

#cc7d99

Secondary· 5.5%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

CookiebotMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

21 Resources

Scripts

Styles

Async

Defer

Top Script Sources

lantarenvenster.nl(7)consent.cookiebot.com(2)googletagmanager.com(2)use.fontawesome.com(1)cdn.jsdelivr.net(1)

Website Identity

LantarenVenster

Organization

LantarenVenster is het theater voor film en jazz in Rotterdam. Met de vele filmvoorstellingen, concerten en festivals is er altijd wat te beleven.

[email protected]

+31102772277

www.lantarenvenster.nl/

20 years old

Location detected: 🇳🇱 Netherlandsvia phone

NETIM📧 Microsoft 365nl-NL

Social Profiles

Facebook Instagram

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Last analyzed: 19 May 2026 at 21:31

Historical Analysis & Change Tracking