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zandronum.com

https://zandronum.com· First analyzed 02 Jun 2026· Updated 02 Jun 2026
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zandronum.com
Desktop screenshot of zandronum.com
Mobile screenshot of zandronum.com
Mobile

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Hosting Provider

MISTRAL

IP Address

217.154.79.34

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Berlin, Germany

ASN

AS8560

Server

Nginx

Nameservers

dns2.registrar-servers.com.dns1.registrar-servers.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
603 ms10%
Speed Index
784 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
229 KB
20 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
MISTRAL

Technology Stack

1 Technologies Detected

Web Servers

1
Nginx

SEO Analysis

D54/100
15
8
2
Meta Tags9/15
Content10/12
Headings8/8
Technical9/25
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
Z
zandronum.comzandronum.com

Zandronum - Multiplayer ZDoom

Zandronum is a modern multiplayer-oriented source port for the Doom engine, with seemless netcode, mod support, and cross-platform compatibility.

Title Length29 chars

Recommended: 50-60 chars (~181px / 580px)

Description Length145 chars

Recommended: 120-160 chars

Issues (2)

  • • Most images missing alt text (8/9) — critical for accessibility and SEO
  • • Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

10 issues found

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Crawlability

Sitemap
robots.txt

20 rules

Local SEO

Local Search Readiness

6/100
Poor
2 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

D43/100
Bot Access
20/25
Machine Read.
16/25
Schema Data
0/25
Citation
7/25

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:36%
Words:444
Token eff.:Optimal
Sections/1K:4.5

Structured Data

No Schema

Citation Readiness

Opening Summary17w
Descriptive Headingsavg 4.5w
Canonical URL
Open Graph0/3
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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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
71/100
8
Passed
4
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
11/20
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.
1 recommendation
  • •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.
70/100
A+
23 mg
CO₂e / view
229.0 KB
Page Weight
95%
Cleaner Than
New Visitor
26 mg
vs
Returning (cached)
13 mg
Annual (10K/mo)
2.8 kg
Emission Segments
Data Center
1 mg
Network
7 mg
Device
15 mg
Resource Breakdown
Images
91.5 KB
CSS
134.2 KB
HTML
3.3 KB
Green Hosting Verified
IONOS SE
GWF Verified
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

36%Critical
Interactive

HTTPS

No WAF

81d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

24.05.2026

Valid Until

22.08.2026

Subject Alternative Names (3)

auth.zandronum.comwww.zandronum.comzandronum.com

SHA-256 Fingerprint

43:5C:28:89:3D:5C:0F:DF:62:61:D9:81:99:98:AC:F2:81:F4:DA:6E...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-store)
content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=utf-8
date
Tue, 02 Jun 2026 04:58:03 GMT
server
nginx
strict-transport-security
max-age=0
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

45

SPF
DKIM
DMARC

MX Records (1)

mailserver.zandronum.xyz

Domain Information

zandronum.com

Domain Age
14 years

Created

30.05.2012

Expires

30.05.2030

Last Updated

29.04.2021

Registrar

NameCheap, Inc.

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
30/100
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.
4 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Tahoma

WCAG Fail
65/100
Readability
/30
20/30

16px · LH 1.20

Hierarchy
/20
19/20

2x ratio · ✓ H1→H6

WCAG
/25
12/25

1:1 min contrast

Performance
/25
14/25

1 font

Heading Font

Tahoma

Sans32px

Body Font

Tahoma

Sans16px

Contrast Ratio

1:1

46 issues

Reading Comfort

~66 CPL

Optimal (45–75)
32px
h1
28px
h2
20px
h3
16px
p

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

⚠️ Tight line spacing (1.20). Increase to 1.4–1.6 for better readability.

✅ Optimal line length: ~66 chars/line (ideal 45–75 CPL).

⚠️ Hard to read: Flesch score 47/100. Simplify sentences for wider reach.

❌ Low contrast: 46 elements fail WCAG AA (min 1.0:1). Increase text/background contrast.

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

Buy on MyFontsFlesch 47

Color Palette

6 unique colors
5.64:1 AA Dark
#000000
Background· 28.899999999999995%
#7b8878
Other· 6.1%
#1d1a2c
Primary· 45.7%
#0b0f11
Secondary· 7%
#465843
Secondary· 6.4%

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Scripts & Styles

1 Resources

0
Scripts
1
Styles
0
Async
0
Defer

Top Script Sources

Website Identity

zandronum.com

14 years old
Location detected: 🇩🇪 Germanyvia ip
NameCheap, Inc.en

Social Profiles

Discord

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Last analyzed: 02 Jun 2026 at 04:58

Historical Analysis & Change Tracking

zandronum.com Technology Stack - Built With Nginx | StackOptic | StackOptic