xavierstuder.com

https://xavierstuder.com· First analyzed 04 Jun 2026· Updated 04 Jun 2026

Export

xavierstuder.com

Mobile

Sponsored

Hosting Provider

Infomaniak Cloud

IP Address

195.15.220.221

Site Location

🇨🇭 Switzerlandvia ip

Server Location

🇨🇭 Geneva, Switzerland

ASN

AS29222

Organization

Infomaniak Cloud

Server

Apache

Nameservers

nsany1.infomaniak.com.nsany2.infomaniak.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

306 ms10%

Speed Index

398 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.7 MB

96 requests

Image Optimization

Lazy LoadResponsiveJetpack Photon (WordPress)

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

OceanWPv4.1.6

by OceanWP

View Theme

Progressive Web App

Service WorkerApple Touch Icon

Technology Stack

14 Technologies Detected

Plugins

Jetpack

Onesignal Free Web Push Notifications

Analytics

Advertising

Google Ads Google AdSense

UI Components

CSS Frameworks

Icon Libraries

Fonts

Web Servers

Customer Support

SEO Analysis

C69/100

Meta Tags14/15

Content6/12

Headings3/8

Technical23/25

E-E-A-T0/7

Images6/7

Links2/5

URL5/5

Social4/5

Freshness0/4

Mobile3/4

Indexability3/3

xavierstuder.comxavierstuder.com

Le blog high-tech et télécom de Xavier Studer

High-tech, multimédia, internet et télécoms en Suisse: TV, cellulaires, tablettes, tests. La société de l'information par Xavier Studer.

Title Length45 chars

Recommended: 50-60 chars (~273px / 580px)

Description Length136 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

3 URLs

3 sub-sitemaps

robots.txt

2 rules

Allows all crawlers

Local SEO

Local Search Readiness

15/100

Poor

5 11 1

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

Sponsored

AI & LLM Readiness

F39/100

Bot Access

20/25

Machine Read.

8/25

Schema Data

4/25

Citation

7/25

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

nav

Text ratio:2%

Words:1,051

Token eff.:Optimal

Depth:1/5

Structured Data

3 JSON-LD

WebSiteBreadcrumbListSearchAction

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph2/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

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.

77/100

Passed

Critical

Warnings

Images & Alt Text

18/20

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

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

11/15

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.

1 recommendation

•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.

62/100

175 mg

CO₂e / view

1.7 MB

Page Weight

60%

Cleaner Than

New Visitor

200 mg

Returning (cached)

100 mg

Annual (10K/mo)

21.0 kg

Emission Segments

Data Center

9 mg

Network

52 mg

Device

115 mg

Resource Breakdown

JavaScript

559.3 KB

Images

686.6 KB

CSS

388.6 KB

Fonts

4.2 KB

HTML

38.8 KB

Other

56.2 KB

Green Hosting Verified

Infomaniak Cloud

Provider Match

4 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

36%Critical

Interactive

HTTPS

No WAF

137d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

18.09.2025

Valid Until

19.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

xavierstuder.comwww.xavierstuder.com

SHA-256 Fingerprint

57:55:17:6C:AA:55:77:46:6B:F2:CF:01:FE:D7:40:97:9E:B7:C4:F1...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

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

content-encoding

📦 Gzip(gzip)

content-length

39426

content-type

text/html; charset=UTF-8

date

Thu, 04 Jun 2026 13:06:25 GMT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

aspmx2.googlemail.com

alt2.aspmx.l.google.com

aspmx3.googlemail.com

alt1.aspmx.l.google.com

+1 more

Domain Information

xavierstuder.com

Domain Age

14y 11m

Created

25.06.2011

Expires

25.06.2029

Last Updated

30.05.2026

Registrar

Infomaniak Network SA

DNSSEC

Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner

Quantcast Choice

GDPR Indicators

Cookie consent banner detected

CMP: Quantcast Choice

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.

84/100

Mobile Friendly16 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

Verdana

WCAG Partial

62/100

Readability

/30

17/30

15px · LH 1.80

Hierarchy

/20

7/20

WCAG

/25

20/25

4.41:1 min contrast

Performance

/25

18/25

System fonts

Heading Font

Verdana

Sans

Body Font

Verdana

Sans15px

Contrast Ratio

4.41:1

1 issue

Reading Comfort

Single Font Family

left aligned

18px

14px

15px

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

⚠️ Hard to read: Flesch score 38/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 4.4:1).

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

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

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

GGoogle Fonts Buy on MyFontsFluid Type (rem)Flesch 38

Color Palette

6 unique colors

Light

#ffffff

Background· 71%

#e000ac

Primary· 16.2%

#310025

Accent· 5.8%

#c7b8c5

Secondary· 4.7%

#644b65

Secondary· 2.3%

#8b096d

Accent· 0%

Business & Marketing Stack

2 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

fundingchoicesmessages.google.com(6)pagead2.googlesyndication.com(3)xavierstuder.com(3)cdn.onesignal.com(2)stats.wp.com(1)

Website Identity

Le blog high-tech et télécom de Xavier Studer

High-tech, multimédia, internet et télécoms en Suisse: TV, cellulaires, tablettes, tests. La société de l'information par Xavier Studer.

[email protected]

www.xavierstuder.com/

14 years old

Location detected: 🇨🇭 Switzerlandvia ip

Infomaniak Network SA📧 Google Workspacefr-FR

Social Profiles

Facebook X (Twitter)Instagram LinkedIn YouTube TikTok Mastodon Threads Bluesky

Sponsored

Last analyzed: 04 Jun 2026 at 13:06

Historical Analysis & Change Tracking