didierstevens.com

https://didierstevens.com· First analyzed 11 May 2026· Updated 11 May 2026

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didierstevens.com

Mobile

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Hosting Provider

OVHcloud

ovhcloud.com

IP Address

148.113.201.69

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Beauharnois, Canada

ASN

AS16276

Organization

OVH Hosting, Inc

Server

Apache

Nameservers

ns1.hover.com.ns2.hover.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

267 ms10%

Speed Index

347 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

3 KB

1 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

OVHcloud

Technology Stack

1 Technologies Detected

Web Servers

Apachev2.4.62

SEO Analysis

F32/100

Meta Tags4/15

Content7/12

Headings0/8

Technical7/25

E-E-A-T0/7

Images0/7

Links2/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

didierstevens.comdidierstevens.com

Didier Stevens

No description available for this page.

Title Length14 chars

Recommended: 50-60 chars (~82px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

• Missing meta description — important for click-through rates in SERPs
• Missing H1 tag — every page should have exactly one H1
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

12 issues found

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Crawlability

Sitemap

robots.txt

4 rules

Local SEO

Local Search Readiness

0/100

Poor

15 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

F26/100

Bot Access

20/25

Machine Read.

5/25

Schema Data

0/25

Citation

1/25

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:71%

Words:76

Token eff.:Too Short

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

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.

63/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

3/20

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.

3 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.

76/100

A+

<0.001 g

CO₂e / view

2.7 KB

Page Weight

95%

Cleaner Than

New Visitor

<0.001 g

Returning (cached)

<0.001 g

Annual (10K/mo)

36 g

Emission Segments

Data Center

<0.001 g

Network

<0.001 g

Device

<0.001 g

Resource Breakdown

Images

556 B

HTML

2.1 KB

Green Hosting Verified

OVHcloud

GWF Verified

2 recommendations

•Carbon footprint recommendation preview...

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Security Score

71%Good

Static / Informational

HTTPS

No WAF

31d

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

14.03.2026

Valid Until

12.06.2026

Subject Alternative Names (1)

didierstevens.com

SHA-256 Fingerprint

4F:C5:22:A3:41:96:EF:73:C0:52:73:90:3D:1C:6B:57:34:62:BE:6F...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

content-length

1874

content-type

text/html

date

Mon, 11 May 2026 03:08:17 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

Domain Information

didierstevens.com

Domain Age

19y 11m

Created

12.06.2006

Expires

12.06.2026

Last Updated

11.06.2025

Registrar

Tucows Domains Inc.

DNSSEC

Not Enabled

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.

33/100

Not 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.

4 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Times New Roman

WCAG AAA

65/100

Readability

/30

19/30

16px · LH --

Hierarchy

/20

8/20

WCAG

/25

24/25

9.4:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Times New Roman

Body Font

Times New Roman

Serif16px

Contrast Ratio

9.4:1

WCAG AAA (≥7:1)

Reading Comfort

Single Family

left aligned

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

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 9.4:1).

✅ Lean font stack: 1 font families keeps load times fast.

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFontsFlesch 0

Color Palette

7 unique colors

3.58:1 AA Large Light

#ffffff

Background· 83.2%

#878693

Other· 2.1%

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Website Identity