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phyphox.org

https://phyphox.org· First analyzed 24 May 2026· Updated 24 May 2026
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phyphox.org
Desktop screenshot of phyphox.org
Mobile screenshot of phyphox.org
Mobile

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Hosting Provider

RWTH Aachen University

IP Address

137.226.117.156

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Aachen, Germany

ASN

AS47610

Organization

RWTH Aachen University

Server

Apache

Nameservers

dns-2.dfn.de.zs1.rz.rwth-aachen.de.zs2.rz.rwth-aachen.de.dns-1.dfn.de.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
606 ms10%
Speed Index
788 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
687 KB
35 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPressv6.9.4
cms
Twenty Sixteenv3.7
by the WordPress team
View Theme

Technology Stack

5 Technologies Detected

Plugins

2
Youtube Embed PlusThe Events Calendar

Libraries

1
jQueryv3.7.1

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Apachev2.4.67

SEO Analysis

B74/100
21
5
1
Meta Tags10/15
Content11/12
Headings8/8
Technical20/25
E-E-A-T3/7
Images1/7
Links4/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
P
phyphox.orgphyphox.org

phyphox – Physical Phone Experiments

Download for free: Follow us: Features Sensors Phyphox allows you to use the sensors in your phone for your experiments. For example, detect the frequency o...

Description truncated.
Title Length36 chars

Recommended: 50-60 chars (~219px / 580px)

Description Length276 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (19/21) — critical for accessibility and SEO

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

10 URLs

10 sub-sitemaps

robots.txt

2 rules

Local SEO

Local Search Readiness

12/100
Poor
4 12 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

D45/100
Bot Access
20/25
Machine Read.
14/25
Schema Data
0/25
Citation
11/25

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:10%
Words:937
Token eff.:Optimal
Sections/1K:10.7
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary32w
Descriptive Headingsavg 1.4w
Canonical URL
Open Graph3/3
Twitter Card2/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (7)
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
76/100
14
Passed
1
Critical
0
Warnings
Images & Alt Text
5/20
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
15/15
Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.
Keyboard & Focus
15/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
6/15
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.
45/100
B
85 mg
CO₂e / view
686.7 KB
Page Weight
80%
Cleaner Than
New Visitor
97 mg
vs
Returning (cached)
49 mg
Annual (10K/mo)
10.2 kg
Emission Segments
Data Center
19 mg
Network
20 mg
Device
46 mg
Resource Breakdown
JavaScript
48.7 KB
Images
278.5 KB
CSS
347.3 KB
HTML
12.2 KB
Green Hosting Not Verified
RWTH Aachen University
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

71%Good
Static / Informational

HTTPS

No WAF

78d

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/1.1

Valid From

12.05.2026

Valid Until

10.08.2026

Subject Alternative Names (10)

ameland.informatik.rwth-aachen.deforms.phyphox.orgnew.phyphox.orgphyphox.comphyphox.orgtickets.phyphox.orgtools.phyphox.orgtranslate.phyphox.org+2 more

SHA-256 Fingerprint

BA:9C:18:C2:6E:FC:80:B6:1F:E6:A5:EC:8C:6E:26:FD:86:97:5A:CF...

Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

connection
Upgrade, Keep-Alive
content-encoding
📦 Gzip(gzip)
content-length
12180
content-type
text/html; charset=UTF-8
date
Sun, 24 May 2026 14:19:11 GMT
keep-alive
timeout=5, max=100
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

75

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

mx1.rz.rwth-aachen.de

Domain Information

phyphox.org

Domain Age
10y 11m

Created

05.06.2015

Expires

05.06.2026

Last Updated

20.07.2025

Registrar

COREhub, S.R.L.

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked

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.
A
80/100
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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Arial

WCAG Partial
81/100
Readability
/30
24/30

16px · LH 1.75

Hierarchy
/20
20/20

2.5x ratio · ✓ H1→H6

WCAG
/25
15/25

2.23:1 min contrast

Performance
/25
22/25

System fonts

Heading Font

Arial

Sans40px

Body Font

Arial

Sans16px

Contrast Ratio

2.23:1

6 issues

Reading Comfort

~37 CPL

Narrow lines
40px
h1
28px
h2
23px
h3
16px
p

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

⚠️ Hard to read: Flesch score 30/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 6 elements below WCAG AA threshold (min 2.2:1).

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

✅ Strong hierarchy: Headlines are 2.5x larger than body text.

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

Fluid Type (rem)Flesch 30

Color Palette

10 unique colors
13.01:1 AAA Dark
#202020
Other· 42.400000000000006%
#e5e6e4
Other· 4.6%
#404040
Primary· 0%
#8a6753
Secondary· 4.4%
#cbb4a4
Secondary· 2.3%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

12 Resources

9
Scripts
3
Styles
0
Async
1
Defer

Top Script Sources

phyphox.org(9)

Website Identity

phyphox.org

contact@phyphox.org
10 years old
Location detected: 🇩🇪 Germanyvia ip
COREhub, S.R.L.en-US

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Last analyzed: 24 May 2026 at 14:19

Historical Analysis & Change Tracking