platform31.nl

https://platform31.nl· First analyzed 17 May 2026· Updated 17 May 2026

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platform31.nl

Mobile

Sponsored

Hosting Provider

True B.V

IP Address

87.233.198.116

Site Location

🇳🇱 Netherlandsvia phone

Server Location

🇳🇱 Amsterdam, The Netherlands

ASN

AS15703

Organization

True B.V

Nameservers

ns5.leaseweb.nl.ns1.leaseweb.nl.ns4.leaseweb.net.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

597 ms10%

Speed Index

776 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.8 MB

48 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

Stuurluiv2.2.0Custom

by Stuurlui

View Theme

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

11 Technologies Detected

Plugins

Searchwp Live Ajax Search

Gravity Forms

Gravityformsturnstile

Libraries

CSS Frameworks

Icon Libraries

Analytics

Tag Managers

SEO Analysis

B77/100

Meta Tags11/15

Content11/12

Headings8/8

Technical20/21

E-E-A-T2/7

Images4/7

Links2/5

URL5/5

Social4/5

Freshness4/4

Mobile3/4

Indexability3/3

platform31.nlplatform31.nl

Home - Platform31 | Kennis en netwerk voor stad en regio

Kennis-en netwerkorganisatie voor stad en regio Platform31.

Title Length56 chars

Recommended: 50-60 chars (~344px / 580px)

Description Length59 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (96/140) — critical for accessibility and SEO

6 issues found

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Local SEO

Local Search Readiness

32/100

Needs Work

9 9

Sponsored

AI & LLM Readiness

C60/100

Bot Access

20/25

Machine Read.

16/25

Schema Data

7/25

Citation

17/25

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

nav

Text ratio:11%

Words:4,043

Token eff.:Good

Sections/1K:4.5

Depth:1/5

Structured Data

6 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

Citation Readiness

Opening Summary43w

Descriptive Headingsavg 7.4w

Canonical URL

Open Graph3/3

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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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.

87/100

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

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

13/15

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

ARIA & Roles

11/15

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.

39/100

357 mg

CO₂e / view

2.8 MB

Page Weight

30%

Cleaner Than

New Visitor

408 mg

Returning (cached)

204 mg

Annual (10K/mo)

42.9 kg

Emission Segments

Data Center

80 mg

Network

86 mg

Device

192 mg

Resource Breakdown

JavaScript

177.6 KB

Images

2.5 MB

CSS

112.4 KB

HTML

35.1 KB

Green Hosting Not Verified

True B.V

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

75%Good

Critical / Transactional

HTTPS

No WAF

58d

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)

platform31.nlwww.platform31.nl

SHA-256 Fingerprint

E4:6E:F5:C8:3B:80:6F:C6:B1:6F:08:3F:1E:C5:32:7F:6D:BD:83:59...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

age

1598

content-encoding

📦 Gzip(gzip)

content-length

35659

content-security-policy

frame-ancestors 'self'; frame-src *.savviihq.com *.facebook...

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

platform31-nl.mail.protection.outlook.com

Domain Information

platform31.nl

Domain Age

14y 6m

Created

21.11.2011

Last Updated

10.10.2023

Registrar

LeaseWeb Netherlands B.V.

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

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.

71/100

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

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Source Sans Pro

WCAG Partial

77/100

Readability

/30

20/30

22px · LH 1.20

Hierarchy

/20

19/20

2.18x ratio · ✓ H1→H6

WCAG

/25

18/25

1.06:1 min contrast

Performance

/25

20/25

1 font · 3 req

Heading Font

Source Sans Pro

Sans48px

Body Font

Source Sans Pro

Sans22px

Contrast Ratio

1.06:1

3 issues

Reading Comfort

~34 CPL

Narrow lines

48px

38px

19px

22px

✅ Excellent readability: 22px body text is ideal for all devices.

⚠️ Tight line spacing (1.20). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 14/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 3 elements below WCAG AA threshold (min 1.1:1).

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

✅ Strong hierarchy: Headlines are 2.2x larger than body text.

Buy on MyFontsFluid Type (rem)Flesch 14

Color Palette

14 unique colors

10.35:1 AAA Light

#fafafa

Background· 8%

#3d3d42

Other· 7.6%

#c9d6de

Primary· 23.3%

#a8c0c1

Secondary· 9%

#bbbe2b

Accent· 7.8%

#7a7064

Secondary· 7%

#759dc1

Secondary· 6.6%

#adb3a0

Secondary· 5.8%

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

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

platform31.nl(18)kit.fontawesome.com(1)

Website Identity

Platform31

Organization

Kennis-en netwerkorganisatie voor stad en regio Platform31.

[email protected]

+310703028484

www.platform31.nl/

14 years old

Location detected: 🇳🇱 Netherlandsvia phone

LeaseWeb Netherlands B.V.📧 Microsoft 365nl-NL

Social Profiles

Sponsored

Last analyzed: 17 May 2026 at 04:55

Historical Analysis & Change Tracking