opsolder.nl

https://opsolder.nl· First analyzed 31 May 2026· Updated 31 May 2026

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opsolder.nl

Mobile

Sponsored

Hosting Provider

Combell NV

IP Address

188.208.37.45

Site Location

🇳🇱 Netherlandsvia tld

Server Location

🇧🇪 Ghent, Belgium

ASN

AS34762

Organization

Combell NV

Server

Nginx

Nameservers

ns3.european-server.com.ns4.european-server.com.ns1.european-server.eu.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

503 ms10%

Speed Index

654 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.6 MB

52 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

Twenty Twenty-Onev2.7

by the WordPress team

View Theme

Technology Stack

13 Technologies Detected

Plugins

Ultimate Blocks

WPML

Add Search To Menu Mobile Menu

Analytics

Libraries

CSS Frameworks

Icon Libraries

Tag Managers

Web Servers

SEO Analysis

B73/100

Meta Tags10/15

Content8/12

Headings6/8

Technical24/25

E-E-A-T2/7

Images3/7

Links2/5

URL5/5

Social3/5

Freshness4/4

Mobile3/4

Indexability3/3

opsolder.nlopsolder.nl

Home - keuze pagina - Museum Ons' Lieve Heer op Solder

No description available for this page.

Title Length54 chars

Recommended: 50-60 chars (~337px / 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 (4/6) — critical for accessibility and SEO

9 issues found

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Crawlability

Sitemap

Type: index

5 URLs

5 sub-sitemaps

robots.txt

2 rules

Allows all crawlers

Local SEO

Local Search Readiness

19/100

Poor

6 11

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

D52/100

Bot Access

20/25

Machine Read.

13/25

Schema Data

7/25

Citation

12/25

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

navheader/footer

Text ratio:3%

Words:414

Token eff.:Optimal

Depth:2/5

Structured Data

4 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

Citation Readiness

Opening Summary58w

Descriptive Headings

Canonical URL

Open Graph1/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (7)

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.

88/100

Passed

Critical

Warnings

Images & Alt Text

18/20

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

Semantic Structure

20/20

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

5/15

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.

54/100

168 mg

CO₂e / view

1.6 MB

Page Weight

60%

Cleaner Than

New Visitor

192 mg

Returning (cached)

96 mg

Annual (10K/mo)

20.1 kg

Emission Segments

Data Center

8 mg

Network

49 mg

Device

110 mg

Resource Breakdown

JavaScript

52.3 KB

Images

36.5 KB

CSS

1.5 MB

HTML

23.6 KB

Green Hosting Verified

Combell

GWF Verified

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

44d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

16.04.2026

Valid Until

15.07.2026

Subject Alternative Names (2)

opsolder.nlwww.opsolder.nl

SHA-256 Fingerprint

45:BF:02:70:18:4E:92:A6:A5:DA:26:27:1D:CE:15:F6:45:B9:AB:A1...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Sun, 31 May 2026 20:38:08 GMT

link

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

server

nginx

vary

Accept-Encoding

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (3)

mx.mailprotect.be

opsolder-nl.mail.protection.outlook.com

mx.backup.mailprotect.be

Domain Information

opsolder.nl

Domain Age

19y 10m

Created

02.08.2006

Last Updated

24.10.2024

Registrar

Combell

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.

82/100

Mobile Friendly7 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

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Interstate-Regular

WCAG Partial

72/100

Readability

/30

20/30

18px · LH 1.70

Hierarchy

/20

15/20

3.48x ratio

WCAG

/25

17/25

1:1 min contrast

Performance

/25

20/25

2 fonts · 3 req

Heading Font

Interstate-Regular

Sans64px

Body Font

Interstate-Regular

Sans18px

Contrast Ratio

1:1

6 issues

Reading Comfort

~42 CPL

Narrow lines

64px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

⚠️ Partial contrast: 6 elements below WCAG AA threshold (min 1.0:1).

✅ Strong hierarchy: Headlines are 3.5x larger than body text.

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

✅ Lean font stack: 2 font families keeps load times fast.

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

Buy on MyFontsFluid Type (rem)

Color Palette

11 unique colors

5.76:1 AA Light

#ffffff

Background· 15.5%

#5e6866

Other· 6.1%

#361a0c

Accent· 22.9%

#1a0f07

Accent· 12.399999999999999%

#52351f

Secondary· 8.2%

#9a7f6a

Secondary· 7.4%

#030100

Primary· 6.6%

#5c4938

Secondary· 6.4%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

opsolder.nl(9)googletagmanager.com(3)cdn.cookiehub.eu(1)use.fontawesome.com(1)

Website Identity

Museum Ons' Lieve Heer op Solder

Organization

Een verborgen schat op zolder

[email protected]

opsolder.nl/

19 years old

Location detected: 🇳🇱 Netherlandsvia tld

Combell📧 Microsoft 365nl-NL

Social Profiles

Facebook X (Twitter)Instagram LinkedIn

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Last analyzed: 31 May 2026 at 20:38

Historical Analysis & Change Tracking