fhem.de

https://fhem.de· First analyzed 11 May 2026· Updated 11 May 2026

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fhem.de

Mobile

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Hosting Provider

Hetzner

hetzner.com

IP Address

188.40.131.57

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Falkenstein, Germany

ASN

AS24940

Organization

Hetzner

Server

Apache

Nameservers

ns1.first-ns.de.robotns2.second-ns.de.robotns3.second-ns.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

568 ms10%

Speed Index

738 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

32 KB

4 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Hetzner

Technology Stack

1 Technologies Detected

Web Servers

Apachev2.4.52

SEO Analysis

D45/100

Meta Tags4/15

Content12/12

Headings1/8

Technical10/25

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

fhem.defhem.de

Home of FHEM

No description available for this page.

Title Length12 chars

Recommended: 50-60 chars (~80px / 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 (1/1) — critical for accessibility and SEO

13 issues found

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Crawlability

Sitemap

robots.txt

10 rules

Local SEO

Local Search Readiness

0/100

Poor

15 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

F33/100

Bot Access

20/25

Machine Read.

11/25

Schema Data

0/25

Citation

2/25

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

code blocks

Text ratio:43%

Words:809

Token eff.:Optimal

Sections/1K:11.1

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 1.4w

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.

51/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

6/20

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.

4 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.

76/100

A+

3 mg

CO₂e / view

32.4 KB

Page Weight

95%

Cleaner Than

New Visitor

4 mg

Returning (cached)

2 mg

Annual (10K/mo)

396 g

Emission Segments

Data Center

<0.001 g

Network

1 mg

Device

2 mg

Resource Breakdown

Images

20.3 KB

CSS

7.5 KB

HTML

4.7 KB

Green Hosting Verified

Hetzner Online GmbH

GWF Verified

2 recommendations

•Carbon footprint recommendation preview...

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Security Score

71%Good

Static / Informational

HTTPS

No WAF

42d

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

24.03.2026

Valid Until

22.06.2026

Subject Alternative Names (1)

fhem.de

SHA-256 Fingerprint

F0:FD:F2:BE:14:78:9B:EE:AD:DB:D3:CE:D0:7D:E9:B3:A4:5C:CF:56...

Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

content-encoding

📦 Gzip(gzip)

content-length

4470

content-type

text/html

date

Mon, 11 May 2026 00:53:41 GMT

etag

"345f-632ebe21d388a-gzip"

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

mx2.fhem.de

Domain Information

fhem.de

Last Updated

28.02.2017

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.

43/100

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.

Viewport

initial-scale=1.0,user-scalable=1

4 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Arial

WCAG Partial

68/100

Readability

/30

21/30

16px · LH --

Hierarchy

/20

8/20

WCAG

/25

19/25

4.26:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

Arial

Sans

Body Font

Arial

Sans16px

Contrast Ratio

4.26:1

Below AA

Reading Comfort

Single Font Family

left aligned

19px

16px

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

⚠️ Hard to read: Flesch score 48/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 0 elements below WCAG AA threshold (min 4.3:1).

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

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

Flesch 48

Color Palette

8 unique colors

Light

#9c9f8e

Secondary· 4.9%

#ffffe7

Primary· 77.39999999999999%

#d6dac7

Secondary· 3.3%

#a6bea2

Secondary· 3.3%

#dbfffe

Accent· 3.2%

#cac9b6

Secondary· 2.9%

#d8efe1

Secondary· 1.2%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

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Scripts & Styles

1 Resources

Scripts

Styles

Async

Defer

Top Script Sources

Website Identity

fhem.de

Location detected: 🇩🇪 Germanyvia tld

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Last analyzed: 11 May 2026 at 00:53

Historical Analysis & Change Tracking