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bast.de

https://bast.de· First analyzed 01 May 2026· Updated 01 May 2026
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bast.de
Desktop screenshot of bast.de
Mobile screenshot of bast.de
Mobile

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Hosting Provider

Deutscher Wetterdienst

IP Address

141.38.3.30

Site Location

🇩🇪 Bergisch Gladbach, Germanyvia schema_nap

Server Location

🇩🇪 Offenbach, Germany

ASN

AS41289

Organization

Deutscher Wetterdienst

Server

Apache

Nameservers

dnsisp2.dwd.de.dns-2.dfn.de.dns-1.dfn.de.dns-3.dfn.de.+1 more

Performance

92

Core Web Vitals

Weight

First Contentful Paint
1.4 s10%
Speed Index
1.8 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
6.9 MB
43 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Deutscher Wetterdienst

Technology Stack

2 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Apache

SEO Analysis

C66/100
19
6
1
Meta Tags5/15
Content12/12
Headings6/8
Technical21/25
E-E-A-T2/7
Images2/7
Links3/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
B
bast.debast.de

Startseite - BASt

Homepage des deutschsprachigen Auftritts

Title Length19 chars

Recommended: 50-60 chars (~115px / 580px)

Description Length40 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (17/21) — critical for accessibility and SEO

7 issues found

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Crawlability

Sitemap
robots.txt

8 rules

Local SEO

Local Search Readiness

28/100
Needs Work
8 12

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AI & LLM Readiness

D48/100
Bot Access
20/25
Machine Read.
11/25
Schema Data
6/25
Citation
11/25

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
nav
Text ratio:8%
Words:1,349
Token eff.:Optimal
Sections/1K:2.2
Depth:1/5

Structured Data

2 JSON-LD
Organization×1.1WebSiteSearchAction

Citation Readiness

Opening Summary500w
Descriptive Headingsavg 4.2w
Canonical URL
Open Graph3/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
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.
A
87/100
15
Passed
2
Critical
1
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
18/20
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
10/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 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.
26/100
F
870 mg
CO₂e / view
6.9 MB
Page Weight
5%
Cleaner Than
New Visitor
995 mg
vs
Returning (cached)
497 mg
Annual (10K/mo)
104.4 kg
Emission Segments
Data Center
194 mg
Network
209 mg
Device
467 mg
Resource Breakdown
JavaScript
789.9 KB
Images
5.8 MB
CSS
307.6 KB
HTML
17.8 KB
Other
3.8 KB
Green Hosting Not Verified
Deutscher Wetterdienst
7 recommendations
  • •Carbon footprint recommendation preview...
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A

Security Score

81%Very Good
Interactive

HTTPS

No WAF

71d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

11.07.2025

Valid Until

11.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

bast.mandant.dwd.deabw-360.deaugenblickwinkel-360.debast.debbd-v.deeevc.netkinderunfallatlas.denationalestelleverkehr.de+12 more

SHA-256 Fingerprint

E7:9B:BB:72:1F:A4:8E:D7:18:87:3C:D9:68:09:D5:F7:8B:49:7B:5B...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🟡 1 Hours(max-age=3600)
content-encoding
📦 Gzip(gzip)
content-language
de
content-security-policy
default-src 'self'; base-uri 'self';  connect-src 'self' sg....
content-type
text/html;charset=utf-8
date
Fri, 01 May 2026 13:05:39 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

zbcsgbbm.gbbmvi-wan.de
ofcsgbbm.gbbmvi-wan.de

Domain Information

bast.de

Last Updated

25.06.2025

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
Privacy policy page linked

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.
C
64/100
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, maximum-scale=5.0, user-scalable=1
2 recommendations
  • •Mobile compatibility recommendation preview...
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Typography & Readability

Titillium Web

WCAG Partial
70/100
Readability
/30
21/30

16px · LH 1.50

Hierarchy
/20
17/20

2x ratio

WCAG
/25
14/25

1:1 min contrast

Performance
/25
18/25

1 font · 4 req

Heading Font

Titillium Web

Sans32px

Body Font

Titillium Web

Sans16px

Contrast Ratio

1:1

6 issues

Reading Comfort

~42 CPL

Narrow lines
32px
h1
25px
h2
18px
h3
16px
p

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

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

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

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

⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

Buy on MyFontsFlesch 0

Color Palette

7 unique colors
3.8:1 AA Large Light
#ffffff
Primary· 44.800000000000004%
#738783
Secondary· 5.7%
#2c6c88
Primary· 23.1%
#566970
Secondary· 13.8%
#1f2822
Secondary· 4.8%
#c0cec2
Secondary· 4.7%
#475b57
Secondary· 3.1%

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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Scripts & Styles

13 Resources

3
Scripts
10
Styles
0
Async
0
Defer

Top Script Sources

bast.de(2)SiteGlobals(1)

Website Identity

Bundesanstalt für Straßenwesen

Bundesanstalt für Straßenwesen

Organization

Bast Website

post@bast.de
+49 2204 43-0
www.bast.de/

Brüderstraße 53, Bergisch Gladbach

51427, Bergisch Gladbach

DE

Location detected: 🇩🇪 Germany, Bergisch Gladbachvia schema_nap
de

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Last analyzed: 01 May 2026 at 13:05

Historical Analysis & Change Tracking