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bortzmeyer.org

https://bortzmeyer.org· First analyzed 11 May 2026· Updated 11 May 2026
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bortzmeyer.org
Desktop screenshot of bortzmeyer.org
Mobile screenshot of bortzmeyer.org
Mobile

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Hosting Provider

Gandi
gandi.net

IP Address

92.243.4.211

Site Location

🇫🇷 Francevia ip

Server Location

🇫🇷 Paris, France

ASN

AS203476

Server

Apache

Nameservers

ns2.bortzmeyer.org.ns.eu.org.ns4.bortzmeyer.org.ns1.shaftinc.fr.+3 more

Performance

100

Core Web Vitals

Weight

First Contentful Paint
628 ms10%
Speed Index
816 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
8.2 MB
10 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Gandi

Technology Stack

1 Technologies Detected

Web Servers

1
Apachev2.4.67

SEO Analysis

D56/100
15
8
2
Meta Tags7/15
Content12/12
Headings8/8
Technical11/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability0/3
B
bortzmeyer.orgbortzmeyer.org

Blog Stéphane Bortzmeyer: Accueil

No description available for this page.

Title Length33 chars

Recommended: 50-60 chars (~198px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing meta description — important for click-through rates in SERPs
  • • Page is set to noindex — will not appear in search results

10 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

1 URLs

robots.txt

Local SEO

Local Search Readiness

7/100
Poor
3 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

F35/100
Bot Access
20/25
Machine Read.
5/25
Schema Data
0/25
Citation
10/25

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:46%
Words:15,001
Token eff.:Excessive
Sections/1K:0.9
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary31w
Descriptive Headingsavg 7.2w
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...
Upgrade to view recommendations

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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
71/100
9
Passed
4
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
11/20
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.
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.
38/100
F
850 mg
CO₂e / view
8.2 MB
Page Weight
5%
Cleaner Than
New Visitor
972 mg
vs
Returning (cached)
486 mg
Annual (10K/mo)
102.0 kg
Emission Segments
Data Center
42 mg
Network
250 mg
Device
559 mg
Resource Breakdown
Images
8.2 MB
CSS
9.7 KB
HTML
53.8 KB
Green Hosting Verified
Gandi
Provider Match
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

41%Poor
Interactive

HTTPS

No WAF

61d

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

13.04.2026

Valid Until

12.07.2026

Subject Alternative Names (1)

www.bortzmeyer.org

SHA-256 Fingerprint

81:4F:88:86:53:CB:5A:49:21:92:EB:5D:A9:1D:F0:04:F4:94:32:19...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges
bytes
connection
Upgrade, Keep-Alive
content-encoding
📦 Gzip(gzip)
content-length
54782
content-type
text/html; charset=UTF-8
date
Mon, 11 May 2026 06:53:56 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

mail.bortzmeyer.org

Domain Information

bortzmeyer.org

Domain Age
20y 8m

Created

29.08.2005

Expires

29.08.2027

Last Updated

13.11.2025

Registrar

NETIM SAS

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked
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.
D
50/100
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.
Viewport
width=device-width, initial-scale=1, maximum-scale=1
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

arial

WCAG Partial
82/100
Readability
/30
24/30

16px · LH 1.50

Hierarchy
/20
19/20

2.4x ratio · ✓ H1→H6

WCAG
/25
19/25

1.46:1 min contrast

Performance
/25
20/25

System fonts

Heading Font

arial

Sans38px

Body Font

arial

Sans16px

Contrast Ratio

1.46:1

1 issue

Reading Comfort

~37 CPL

Narrow lines
38px
h1
29px
h2
22px
h3
16px
p

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

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 1.5:1).

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

✅ Strong hierarchy: Headlines are 2.4x larger than body text.

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

Flesch 57

Color Palette

9 unique colors
Light
#ffffff
Background· 47.6%
#000098
Primary· 17.599999999999998%
#9bcefe
Accent· 9.3%
#e0e0e6
Secondary· 8.1%
#9aaec6
Secondary· 5.2%
#505382
Secondary· 3.7%
#000079
Accent· 1.2%

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

2 Resources

0
Scripts
2
Styles
0
Async
0
Defer

Top Script Sources

Website Identity

bortzmeyer.org

20 years old
Location detected: 🇫🇷 Francevia ip
NETIM SASfr

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Last analyzed: 11 May 2026 at 06:54

Historical Analysis & Change Tracking