sigrok.org

https://sigrok.org· First analyzed 13 May 2026· Updated 13 May 2026

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sigrok.org

Mobile

Sponsored

Hosting Provider

Michael Sebastian Schinzel trading as IP-Projects GmbH & Co. KG

IP Address

103.241.51.19

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Waldbrunn, Germany

ASN

AS48314

Organization

Michael Sebastian Schinzel trading as IP-Projects GmbH & Co. KG

Server

Apache

Nameservers

ns3.ip-projects.de.ns4.ip-projects.de.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

638 ms10%

Speed Index

829 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

146 KB

12 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Michael Sebastian Schinzel trading as IP-Projects GmbH & Co. KG

Technology Stack

2 Technologies Detected

CSS Frameworks

Tailwind CSS

Web Servers

Apachev2.4.62

SEO Analysis

D53/100

Meta Tags4/15

Content11/12

Headings8/8

Technical10/25

E-E-A-T0/7

Images6/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

sigrok.orgsigrok.org

sigrok

No description available for this page.

Title Length6 chars

Recommended: 50-60 chars (~35px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description — important for click-through rates in SERPs
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

11 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

9 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.

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AI & LLM Readiness

D40/100

Bot Access

19/25

Machine Read.

12/25

Schema Data

0/25

Citation

9/25

AI Bot Access

13/14 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

nav

Text ratio:13%

Words:608

Token eff.:Optimal

Sections/1K:14.8

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary26w

Descriptive Headingsavg 1.7w

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...

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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.

83/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

20/20

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

12/15

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

7/15

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.

64/100

A+

18 mg

CO₂e / view

146.2 KB

Page Weight

95%

Cleaner Than

New Visitor

21 mg

Returning (cached)

10 mg

Annual (10K/mo)

2.2 kg

Emission Segments

Data Center

4 mg

Network

4 mg

Device

10 mg

Resource Breakdown

JavaScript

85.6 KB

Images

19.3 KB

CSS

2.2 KB

HTML

31.0 KB

Other

8.2 KB

Green Hosting Not Verified

Michael Sebastian Schinzel trading as IP-Projects GmbH & Co. KG

3 recommendations

•Carbon footprint recommendation preview...

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Security Score

31%Critical

Interactive

HTTPS

No WAF

82d

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/1.1

Valid From

05.05.2026

Valid Until

03.08.2026

Subject Alternative Names (2)

sigrok.orgwww.sigrok.org

SHA-256 Fingerprint

5D:EE:B8:5B:31:EE:B1:57:1F:1A:5F:52:C6:AE:C0:B0:50:72:3F:83...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟡 0s(private, must-revalidate, max-age=0)

connection

content-length

31438

content-type

text/html; charset=UTF-8

content-language

date

Wed, 13 May 2026 03:59:46 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mail.sigrok.org

Domain Information

sigrok.org

Domain Age

17y 1m

Created

20.03.2009

Expires

20.03.2027

Last Updated

15.01.2026

Registrar

InterNetX GmbH

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

44/100

Not 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.

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Linux Libertine + sans-serif

WCAG Partial

62/100

Readability

/30

19/30

14px · LH 1.60

Hierarchy

/20

11/20

2.06x ratio

WCAG

/25

18/25

4.16:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Linux Libertine

Sans29px

Body Font

sans-serif

Sans14px

Contrast Ratio

4.16:1

1 issue

Reading Comfort

Dual Sans-Serif

left aligned

29px

24px

20px

14px

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

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

❌ Very complex text: Flesch score 23/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 4.2:1).

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

✅ Strong hierarchy: Headlines are 2.1x larger than body text.

Buy on MyFontsFlesch 23

Color Palette

5 unique colors

Light

#ffffff

Background· 48.00000000000001%

#cfdfff

Primary· 35.3%

#96a0b9

Secondary· 8.2%

#c1d1ea

Secondary· 5.3999999999999995%

#e4f2eb

Secondary· 3.2%

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Scripts & Styles

3 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(1)

Website Identity

sigrok.org

17 years old

Location detected: 🇩🇪 Germanyvia ip

InterNetX GmbHen

Social Profiles

X (Twitter)GitHub

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Last analyzed: 13 May 2026 at 04:00

Historical Analysis & Change Tracking