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tetra.net

https://tetra.net· First analyzed 15 May 2026· Updated 15 May 2026
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tetra.net
Desktop screenshot of tetra.net
Mobile screenshot of tetra.net
Mobile

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Hosting Provider

u+i interact GmbH

IP Address

46.231.239.119

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Hanover, Germany

ASN

AS15726

Organization

u+i interact GmbH

Server

Apache

Nameservers

ns31.constellix.com.ns41.constellix.net.ns51.constellix.net.ns61.constellix.net.+2 more

Performance

100

Core Web Vitals

Weight

First Contentful Paint
572 ms10%
Speed Index
744 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
6.6 MB
75 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
TYPO3

Technology Stack

5 Technologies Detected

Libraries

1
jQuery

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Advertising

1
Google Ads

Web Servers

1
Apache

SEO Analysis

C62/100
18
7
2
Meta Tags5/15
Content10/12
Headings8/8
Technical16/21
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
T
tetra.nettetra.net

Find a variety of aquarium products now from the experts at Tetra: ...

large selection of fish food ✔ wide range of water care products

Title truncated.
Title Length72 chars

Recommended: 50-60 chars (~446px / 580px)

Description Length64 chars

Recommended: 120-160 chars

Issues (2)

  • • Title is too long (72 chars, ~446px). Will be truncated in search results.
  • • Most images missing alt text (79/82) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Local SEO

Local Search Readiness

26/100
Needs Work
7 9 2

Sponsored

AI & LLM Readiness

D40/100
Bot Access
20/25
Machine Read.
7/25
Schema Data
0/25
Citation
13/25

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
Text ratio:6%
Words:2,084
Token eff.:Optimal
Sections/1K:1.9

Structured Data

No Schema

Citation Readiness

Opening Summary13w
Descriptive Headingsavg 4.4w
Canonical URL
Open Graph2/3
Twitter Card1/3
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.
C
68/100
12
Passed
4
Critical
2
Warnings
Images & Alt Text
13/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
17/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
5/15
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
7/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
3 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.
32/100
F
836 mg
CO₂e / view
6.6 MB
Page Weight
5%
Cleaner Than
New Visitor
955 mg
vs
Returning (cached)
478 mg
Annual (10K/mo)
100.3 kg
Emission Segments
Data Center
187 mg
Network
201 mg
Device
449 mg
Resource Breakdown
JavaScript
1.3 MB
Images
4.2 MB
CSS
72.7 KB
Fonts
1018.6 KB
HTML
17.8 KB
Green Hosting Not Verified
u+i interact GmbH
8 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

31%Critical
Interactive

HTTPS

No WAF

49d

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+H3

Valid From

04.04.2026

Valid Until

03.07.2026

Subject Alternative Names (19)

aquarium.dees.tetra.defr.tetra.deit.tetra.denl.tetra.depl.tetra.derelaunch.tetra.netru.tetra.de+11 more

SHA-256 Fingerprint

F1:0E:DC:89:38:7C:35:02:F0:45:5D:AB:33:4E:DE:5F:60:67:D0:39...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

alt-svc
h3=":443"; ma=2592000
cache-control
🟡 8 Hours(max-age=31887)
content-encoding
📦 Gzip(gzip)
content-language
en
content-length
17958
content-type
text/html; charset=utf-8
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

90

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

tetra-net.mail.protection.outlook.com

Domain Information

tetra.net

Domain Age
27y 2m

Created

09.03.1999

Expires

09.03.2027

Last Updated

07.02.2026

Registrar

Nom-iq Ltd. dba COM LAUDE

DNSSEC
Not Enabled

Privacy & Compliance

CookieFirst

Cookie Consent Banner
CookieFirst
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: CookieFirst
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
60/100
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, user-scalable=no
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

roboto-condensed-bold + roboto-condensed-regular

WCAG AAA
80/100
Readability
/30
24/30

18px · LH 1.61

Hierarchy
/20
16/20

3.5x ratio · ✓ H1→H6

WCAG
/25
24/25

9.87:1 min contrast

Performance
/25
16/25

2 fonts · 8 req

Heading Font

roboto-condensed-bold

Sans63px

Body Font

roboto-condensed-regular

Sans18px

Contrast Ratio

9.87:1

WCAG AAA (≥7:1)

Reading Comfort

~33 CPL

Narrow lines
63px
h1
50px
h2
36px
h3
23px
h4
18px
p

✅ Excellent readability: 18px body text is ideal for all devices.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 9.9:1).

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

✅ Strong hierarchy: Headlines are 3.5x larger than body text.

✅ Lean font stack: 2 font families keeps load times fast.

✅ Smart font loading: font-display: swap prevents invisible text during load (FOIT).

Buy on MyFontsFlesch 56

Color Palette

10 unique colors
5.7:1 AA Light
#ffffff
Background· 46.5%
#6b665e
Other· 3.9%
#020411
Primary· 15.9%
#c8a277
Secondary· 10.1%
#121d2f
Secondary· 9.4%
#113146
Accent· 7%
#b4a388
Secondary· 3%
#dfddc5
Secondary· 2.3%

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

24 Resources

20
Scripts
4
Styles
4
Async
2
Defer

Top Script Sources

local(12)maps.googleapis.com(4)consent.cookiefirst.com(2)events.sk.ht(1)cdn.jsdelivr.net(1)

Website Identity

tetra.net

Phone number
27 years old
Location detected: 🇩🇪 Germanyvia ip
Nom-iq Ltd. dba COM LAUDE📧 Microsoft 365en-EU

Social Profiles

FacebookYouTube

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Last analyzed: 15 May 2026 at 10:23

Historical Analysis & Change Tracking