photovoltaikforum.com

https://photovoltaikforum.com· First analyzed 12 May 2026· Updated 12 May 2026

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Mobile

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Hosting Provider

23M.com

IP Address

62.113.233.135

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS47447

Organization

23M.com

Nameservers

ns2.checkdomain.de.ns.checkdomain.de.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

492 ms10%

Speed Index

640 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.5 MB

49 requests

Image Optimization

Lazy LoadWebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

23M.com

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

5 Technologies Detected

CSS Frameworks

Analytics

Tag Managers

Advertising

SEO Analysis

C62/100

Meta Tags9/15

Content12/12

Headings8/8

Technical17/25

E-E-A-T0/7

Images3/7

Links2/5

URL5/5

Social1/5

Freshness0/4

Mobile2/4

Indexability3/3

photovoltaikforum.comphotovoltaikforum.com

Photovoltaikforum

Photovoltaikforum: Die größte deutschsprachige Plattform für Solarfans. Hier dreht sich alles um Solarstrom, Eigenverbrauch und Batteriespeicher.

Title Length17 chars

Recommended: 50-60 chars (~103px / 580px)

Description Length145 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (16/24) — critical for accessibility and SEO

9 issues found

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Crawlability

Sitemap

Type: index

25 URLs

25 sub-sitemaps

robots.txt

44 rules

Sitemap reference found

Local SEO

Local Search Readiness

8/100

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

D44/100

Bot Access

20/25

Machine Read.

13/25

Schema Data

3/25

Citation

8/25

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

def. listsnavheader/footer

Text ratio:15%

Words:2,228

Token eff.:Optimal

Sections/1K:18.9

Depth:3/5

Structured Data

1 JSON-LD

WebSiteSearchAction

Citation Readiness

Opening Summary15w

Descriptive Headingsavg 6w

Canonical URL

Open Graph1/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

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.

68/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

7/15

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

5/15

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.

64/100

261 mg

CO₂e / view

2.5 MB

Page Weight

30%

Cleaner Than

New Visitor

299 mg

Returning (cached)

149 mg

Annual (10K/mo)

31.4 kg

Emission Segments

Data Center

13 mg

Network

77 mg

Device

172 mg

Resource Breakdown

JavaScript

348.9 KB

Images

81.7 KB

CSS

2.1 MB

HTML

24.8 KB

Other

376 B

Green Hosting Verified

23M GmbH

GWF Verified

2 recommendations

•Carbon footprint recommendation preview...

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Security Score

56%Poor

Interactive

HTTPS

No WAF

43d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

27.03.2026

Valid Until

25.06.2026

Subject Alternative Names (1)

www.photovoltaikforum.com

SHA-256 Fingerprint

97:79:15:F1:C1:86:67:AF:3A:95:58:5A:D3:9E:64:59:CD:1B:93:88...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(max-age=0, no-cache, no-store, must-revalidate)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Tue, 12 May 2026 14:27:44 GMT

last-modified

Tue, 12 May 2026 14:27:44 GMT

strict-transport-security

max-age=2592000

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

mxlb.ispgateway.de

Domain Information

photovoltaikforum.com

Domain Age

21y 4m

Created

09.01.2005

Expires

09.01.2027

Last Updated

10.01.2026

Registrar

Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USA

DNSSEC

Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner

Quantcast Choice

GDPR Indicators

Cookie consent banner detected

CMP: Quantcast Choice

Data Protection Officer mentioned

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.

76/100

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

width=device-width, initial-scale=1

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

-apple-system

WCAG Partial

70/100

Readability

/30

16/30

15px · LH 1.48

Hierarchy

/20

17/20

3x ratio · ✓ H1→H6

WCAG

/25

16/25

1:1 min contrast

Performance

/25

21/25

System fonts

Heading Font

-apple-system

Sans45px

Body Font

-apple-system

Sans15px

Contrast Ratio

1:1

19 issues

Reading Comfort

~45 CPL

Narrow lines

45px

32px

18px

15px

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.48 ratio (ideal range 1.4–1.6).

❌ Very complex text: Flesch score 6/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 19 elements below WCAG AA threshold (min 1.0:1).

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

✅ Strong hierarchy: Headlines are 3.0x larger than body text.

Flesch 6

Color Palette

14 unique colors

Light

#fefefe

Text· 5.1%

#ecf0f1

Primary· 37.4%

#3781a4

Secondary· 6.8%

#71964d

Secondary· 6.7%

#2f9793

Accent· 6.6%

#53ab8e

Secondary· 6.1%

#a6a631

Accent· 5.7%

#4fc6c0

Accent· 5.6%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

21 Resources

Scripts

Styles

Async

Defer

Top Script Sources

photovoltaikforum.com(14)cdn.privacy-mgmt.com(2)launchpad.privacymanager.io(1)googletagmanager.com(1)cdns.symplr.de(1)

Website Identity

photovoltaikforum.com

21 years old

Location detected: 🇩🇪 Germanyvia ip

Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USAde

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Last analyzed: 12 May 2026 at 14:27

Historical Analysis & Change Tracking