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mathematische-basteleien.de

https://mathematische-basteleien.de· First analyzed 16 May 2026· Updated 16 May 2026
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mathematische-basteleien.de
Desktop screenshot of mathematische-basteleien.de
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Mobile

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Hosting Provider

VAUTRON

IP Address

83.243.58.25

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Regensburg, Germany

ASN

AS25504

Server

Apache

Nameservers

ns2.n5q.de.ns1.n5q.de.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
307 ms10%
Speed Index
399 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
13 KB
4 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
VAUTRON

Technology Stack

1 Technologies Detected

Web Servers

1
Apachev2.4.67

SEO Analysis

D43/100
10
9
3
Meta Tags8/15
Content11/12
Headings0/8
Technical5/21
E-E-A-T3/7
Images1/7
Links3/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
M
mathematische-basteleien.demathematische-basteleien.de

Mathematische Basteleien

Topics include Flexagon, Soma Cube, Pentominos, Cube-it, Rubik's Cube, Froebel's Star, Tangram, House of Santa Claus, Chronogram, Numeric Palindromes. Englis...

Description truncated.
Title Length24 chars

Recommended: 50-60 chars (~147px / 580px)

Description Length166 chars

Recommended: 120-160 chars

Issues (3)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (3/3) — critical for accessibility and SEO
  • • Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

12 issues found

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Local SEO

Local Search Readiness

0/100
Poor
15 2

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

F35/100
Bot Access
20/25
Machine Read.
9/25
Schema Data
0/25
Citation
6/25

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
def. lists
Text ratio:16%
Words:1,232
Token eff.:Optimal
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary60w
Descriptive Headings
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (9)
AI readiness recommendation preview...
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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
48/100
6
Passed
6
Critical
0
Warnings
Images & Alt Text
5/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
3/20
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
9/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
1/15
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.
61/100
A+
2 mg
CO₂e / view
13.4 KB
Page Weight
95%
Cleaner Than
New Visitor
2 mg
vs
Returning (cached)
<0.001 g
Annual (10K/mo)
204 g
Emission Segments
Data Center
<0.001 g
Network
<0.001 g
Device
<0.001 g
Resource Breakdown
Images
5.7 KB
HTML
7.8 KB
Green Hosting Not Verified
VAUTRON
3 recommendations
  • •Carbon footprint recommendation preview...
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B

Security Score

71%Good
Static / Informational

HTTPS

No WAF

79d

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

05.05.2026

Valid Until

03.08.2026

Subject Alternative Names (2)

mathematische-basteleien.dewww.mathematische-basteleien.de

SHA-256 Fingerprint

EE:2D:F5:8F:17:A8:99:3D:C9:7F:B4:BC:50:61:D8:93:F1:56:44:56...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges
bytes
connection
Keep-Alive
content-encoding
📦 Gzip(gzip)
content-length
7649
content-type
text/html
date
Sat, 16 May 2026 19:08:56 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

45

SPF
DKIM
DMARC

MX Records (1)

mail3.netbeat.de

Domain Information

mathematische-basteleien.de

Last Updated

24.01.2026

DNSSEC
Not Enabled

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.
F
29/100
Not Mobile Friendly
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.
5 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Times New Roman

WCAG AA
68/100
Readability
/30
22/30

16px · LH --

Hierarchy
/20
10/20
WCAG
/25
22/25

5.25:1 min contrast

Performance
/25
14/25

1 font

Heading Font

Times New Roman

Body Font

Times New Roman

Serif16px

Contrast Ratio

5.25:1

WCAG AA (≥4.5:1)

Reading Comfort

~57 CPL

Optimal (45–75)
16px
p

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

✅ Optimal line length: ~57 chars/line (ideal 45–75 CPL).

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.2:1).

✅ Lean font stack: 1 font families keeps load times fast.

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFontsFlesch 0

Color Palette

7 unique colors
Light
#ffffff
Background· 66.10000000000001%
#ffffcb
Primary· 23.6%
#a49aca
Secondary· 2.5%
#b6b2da
Secondary· 2.2%
#dc262f
Accent· 1.7%
#d8d5e7
Secondary· 1.5%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Website Identity

mathematische-basteleien.de

Location detected: 🇩🇪 Germanyvia tld

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Last analyzed: 16 May 2026 at 19:05

Historical Analysis & Change Tracking