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jbl.de

https://jbl.de· First analyzed 17 May 2026· Updated 17 May 2026
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jbl.de
Desktop screenshot of jbl.de
Mobile screenshot of jbl.de
Mobile

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Hosting Provider

First Colo GmbH

IP Address

79.133.54.25

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS44066

Organization

First Colo GmbH

Server

Apache

Nameservers

ns1.routing.net.ns3.routing.net.ns2.routing.net.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
672 ms10%
Speed Index
874 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
23.1 MB
55 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
First Colo GmbH

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

3 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Web Servers

1
Apache

SEO Analysis

D55/100
16
8
3
Meta Tags9/15
Content3/12
Headings3/8
Technical20/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social2/5
Freshness0/4
Mobile3/4
Indexability3/3
J
jbl.dejbl.de

JBL | Ahead through research

JBL is your expert for aquaristics, pond & terraristics. Since 1960, JBL has maintained its reputation for high-quality products based on its own research.

Title Length28 chars

Recommended: 50-60 chars (~171px / 580px)

Description Length155 chars

Recommended: 120-160 chars

Issues (3)

  • • Very thin content (5 words). Search engines need substantial content for ranking.
  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (50/61) — critical for accessibility and SEO

11 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

11 URLs

11 sub-sitemaps

robots.txt

21 rules

Sitemap reference found

Local SEO

Local Search Readiness

16/100
Poor
4 13 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

F38/100
Bot Access
20/25
Machine Read.
12/25
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.txtinvalid
llms-full.txt
Semantic HTML
Heading Hierarchy
Text ratio:5%
Words:2,773
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...
Upgrade to view recommendations

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.
B
76/100
12
Passed
4
Critical
1
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
9/20
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
14/15
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
7/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

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.
43/100
F
2.38 g
CO₂e / view
23.1 MB
Page Weight
5%
Cleaner Than
New Visitor
2.73 g
vs
Returning (cached)
1.36 g
Annual (10K/mo)
286.1 kg
Emission Segments
Data Center
117 mg
Network
701 mg
Device
1.57 g
Resource Breakdown
JavaScript
163.6 KB
Images
21.0 KB
CSS
2.9 MB
HTML
36.8 KB
Other
19.9 MB
Green Hosting Verified
firstcolo
GWF Verified
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

51%Poor
Interactive

HTTPS

No WAF

68d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp384r1) (384 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

25.04.2026

Valid Until

24.07.2026

Subject Alternative Names (3)

api.jbl.deapi3.jbl.dewww.jbl.de

SHA-256 Fingerprint

C7:42:44:91:10:B6:B1:18:4F:FC:26:B9:43:00:EB:E9:5E:FA:7A:9F...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-store, no-cache, must-revalidate)
content-encoding
📦 Gzip(gzip)
content-length
37428
content-type
text/html;charset=UTF-8
date
Sun, 17 May 2026 06:00:34 GMT
expires
Thu, 19 Nov 1981 08:52:00 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

50

SPF
DKIM
DMARC

MX Records (2)

asl4.speyerweb.de
mx04.speyerweb.de

Domain Information

jbl.de

Last Updated

10.02.2020

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.
A
80/100
Mobile Friendly330 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=1.0
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

JBL Sans

WCAG Partial
66/100
Readability
/30
25/30

16px · LH 1.60

Hierarchy
/20
7/20
WCAG
/25
16/25

1:1 min contrast

Performance
/25
18/25

1 font · 6 req

Heading Font

JBL Sans

Sans

Body Font

JBL Sans

Sans16px

Contrast Ratio

1:1

1 issue

Reading Comfort

~37 CPL

Narrow lines
150px
h2
40px
h3
16px
p

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

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

✅ Easy to read: Flesch score 79/100 — accessible to general audiences.

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

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

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

Buy on MyFontsFlesch 79

Color Palette

7 unique colors
19.56:1 AAA Light
#ffffff
Primary· 40.9%
#0c0c0c
Text· 4%
#0b331e
Accent· 7.8%
#474a32
Secondary· 3.5%

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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Scripts & Styles

5 Resources

3
Scripts
2
Styles
0
Async
1
Defer

Top Script Sources

local(2)rybbit.oct.de(1)

Website Identity

jbl.de

JBL GmbH & Co. KGDieselstraße 367141 NeuhofenGermany

Location detected: 🇩🇪 Germanyvia tld
en

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Last analyzed: 17 May 2026 at 06:00

Historical Analysis & Change Tracking