linuxtag.org

https://linuxtag.org· First analyzed 05 May 2026· Updated 05 May 2026

Export

linuxtag.org

Mobile

Sponsored

Hosting Provider

GUUG e.V.

IP Address

91.184.37.28

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Neuss, Germany

ASN

AS34225

Organization

GUUG e.V.

Server

Apache

Nameservers

ns2.linuxtag.net.ns1.linuxtag.net.ns2.guug.de.

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%

572 KB

18 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv4.9.29

cms

huemanCustom

Technology Stack

7 Technologies Detected

Libraries

CSS Frameworks

Icon Libraries

Fonts

Web Servers

Languages

SEO Analysis

D54/100

Meta Tags9/15

Content9/12

Headings3/8

Technical12/25

E-E-A-T3/7

Images2/7

Links2/5

URL5/5

Social0/5

Freshness2/4

Mobile4/4

Indexability3/3

linuxtag.orglinuxtag.org

LinuxTag – News und Updates vom LinuxTag e.V.

No description available for this page.

Title Length45 chars

Recommended: 50-60 chars (~275px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

• Missing meta description — important for click-through rates in SERPs
• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (4/6) — critical for accessibility and SEO

12 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

10 rules

Local SEO

Local Search Readiness

3/100

Poor

1 14 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F34/100

Bot Access

20/25

Machine Read.

4/25

Schema Data

0/25

Citation

10/25

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

navheader/footer

Text ratio:6%

Words:265

Token eff.:Too Short

Sections/1K:34

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary34w

Descriptive Headingsavg 3.7w

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...

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.

71/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

13/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

10/15

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

4/15

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.

58/100

71 mg

CO₂e / view

571.9 KB

Page Weight

80%

Cleaner Than

New Visitor

81 mg

Returning (cached)

40 mg

Annual (10K/mo)

8.5 kg

Emission Segments

Data Center

16 mg

Network

17 mg

Device

38 mg

Resource Breakdown

JavaScript

80.0 KB

Images

357.6 KB

CSS

126.0 KB

Fonts

1.0 KB

HTML

7.2 KB

Green Hosting Not Verified

GUUG e.V.

3 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

0%Critical

No SSL

No WAF

N/A

Upgrade to view header details

HTTP Headers

Developer Console

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

content-length

7038

content-type

text/html; charset=UTF-8

date

Mon, 04 May 2026 23:52:20 GMT

keep-alive

timeout=5, max=100

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

mail.linuxtag.org

Domain Information

linuxtag.org

Domain Age

28 years

Created

15.04.1998

Expires

14.04.2027

Last Updated

14.04.2026

Registrar

Key-Systems GmbH

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.

69/100

Mobile Friendly4 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

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Arial

WCAG Partial

62/100

Readability

/30

19/30

16px · LH 1.60

Hierarchy

/20

7/20

WCAG

/25

17/25

1.68:1 min contrast

Performance

/25

19/25

System fonts

Heading Font

Arial

Sans

Body Font

Arial

Sans16px

Contrast Ratio

1.68:1

27 issues

Reading Comfort

~39 CPL

Narrow lines

34px

14px

16px

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

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

❌ Very complex text: Flesch score 16/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 27 elements below WCAG AA threshold (min 1.7:1).

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

✅ System fonts: Zero font loading delay — best possible LCP impact.

GGoogle FontsFlesch 16

Color Palette

9 unique colors

10.05:1 AAA Light

#ffffff

Background· 42.699999999999996%

#424242

Other· 9.5%

#dd9934

Accent· 21.700000000000003%

#e9dcc7

Primary· 2.9%

#7d6c55

Secondary· 2.6%

#126895

Accent· 2.4%

#bbb68e

Secondary· 2.4%

#543538

Secondary· 0.9%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

10 Resources

Scripts

Styles

Async

Defer

Top Script Sources

linuxtag.org(7)

Website Identity

linuxtag.org

28 years old

Location detected: 🇩🇪 Germanyvia ip

Key-Systems GmbHde

Social Profiles

Facebook X (Twitter)

Sponsored

Last analyzed: 05 May 2026 at 00:04

Historical Analysis & Change Tracking