slam.nl

https://slam.nl· First analyzed 22 May 2026· Updated 22 May 2026

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slam.nl

Mobile

Sponsored

Hosting Provider

TransIP B.V.

IP Address

136.144.160.47

Site Location

🇳🇱 Netherlandsvia tld

Server Location

🇳🇱 De Waal, Netherlands

ASN

AS20857

Organization

TransIP B.V.

CDN

Nameservers

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

Performance

100

Core Web Vitals

Weight

First Contentful Paint

678 ms10%

Speed Index

881 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.2 MB

154 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

Svelte

CMS

Umbraco

Infrastructure

Hosting

TransIP B.V.

CDN

Technology Stack

11 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

Frameworks

Meta Frameworks

CSS Frameworks

Tag Managers

Advertising

Libraries

Customer Support

SEO Analysis

D55/100

Meta Tags9/15

Content2/12

Headings6/8

Technical16/25

E-E-A-T0/7

Images3/7

Links5/5

URL5/5

Social2/5

Freshness0/4

Mobile4/4

Indexability3/3

slam.nlslam.nl

SLAM!

SLAM!, Boost Your Life - Luister SLAM! voor de beste pop & dance. In de randstad te ontvangen op FM en in heel Nederland digitaal via web, SLAM! app en DAB+.

Title Length5 chars

Recommended: 50-60 chars (~31px / 580px)

Description Length157 chars

Recommended: 120-160 chars

Issues (2)

• Very thin content (1 words). Search engines need substantial content for ranking.
• Most images missing alt text (40/70) — critical for accessibility and SEO

9 issues found

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Crawlability

Sitemap

Type: index

2 URLs

2 sub-sitemaps

robots.txt

6 rules

Allows all crawlers

Local SEO

Local Search Readiness

3/100

Poor

1 14 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F30/100

Bot Access

19/25

Machine Read.

7/25

Schema Data

0/25

Citation

4/25

AI Bot Access

12/14 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:556

Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph2/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

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.

77/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

12/20

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

11/15

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

ARIA & Roles

4/15

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

3 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.

58/100

123 mg

CO₂e / view

1.2 MB

Page Weight

70%

Cleaner Than

New Visitor

141 mg

Returning (cached)

70 mg

Annual (10K/mo)

14.8 kg

Emission Segments

Data Center

6 mg

Network

36 mg

Device

81 mg

Resource Breakdown

JavaScript

741.4 KB

Images

27.3 KB

CSS

129.9 KB

HTML

321.7 KB

Other

300 B

Green Hosting Verified

Transip

GWF Verified

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

81%Very Good

Static / Informational

HTTPS

No WAF

175d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

13.05.2026

Valid Until

13.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.slam.nl

SHA-256 Fingerprint

60:20:39:30:6A:F4:C9:07:AA:36:ED:2C:A9:5E:B9:9D:A5:C2:3A:5B...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🟡 300s(public, max-age=300)

content-length

329133

content-type

text/html

date

Fri, 22 May 2026 12:59:51 GMT

etag

"1wh55vk"

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

slam-nl.mail.protection.outlook.com

Domain Information

slam.nl

Domain Age

28 years

Created

29.04.1998

Last Updated

04.03.2024

Registrar

team.blue nl B.V.

DNSSEC

Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner

Quantcast Choice

GDPR Indicators

Cookie consent banner detected

CMP: Quantcast Choice

Data Protection Officer 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.

70/100

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

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

zuume + Brutal type

WCAG Partial

61/100

Readability

/30

18/30

15px · LH 1.60

Hierarchy

/20

18/20

2.93x ratio · ✓ H1→H6

WCAG

/25

14/25

1:1 min contrast

Performance

/25

11/25

3 fonts · 2 req

Heading Font

zuume

Sans44px

Body Font

Brutal type

Sans15px

Contrast Ratio

1:1

5 issues

Reading Comfort

~35 CPL

Narrow lines

44px

35px

20px

12px

15px

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

✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

⚠️ Partial contrast: 5 elements below WCAG AA threshold (min 1.0:1).

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

✅ Strong hierarchy: Headlines are 2.9x larger than body text.

⚠️ Text justify detected: Justified text creates uneven word spacing, hurting readability on web.

Buy on MyFontsFluid TypeFlesch 54

Color Palette

3 unique colors

7.52:1 AAA Light

#d2d1d1

Other· 63.100000000000016%

#3b393a

Text· 7.3%

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

Microsoft ClarityFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

sdk.privacy-center.org(3)googletagmanager.com(3)sb.scorecardresearch.com(2)connect.facebook.net(2)cdn.kaching.eu.com(2)

Website Identity

slam.nl

28 years old

Location detected: 🇳🇱 Netherlandsvia tld

team.blue nl B.V.📧 Microsoft 365

Social Profiles

Facebook Instagram

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Last analyzed: 22 May 2026 at 13:00

Historical Analysis & Change Tracking