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bootlin.com

https://bootlin.com· First analyzed 29 Apr 2026· Updated 29 Apr 2026
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bootlin.com
Desktop screenshot of bootlin.com
Mobile screenshot of bootlin.com
Mobile

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Hosting Provider

MCPECloud ISP

IP Address

87.98.181.233

Site Location

🇫🇷 Francevia ip

Server Location

🇫🇷 Gravelines, France

ASN

AS16276

Organization

MCPECloud ISP

Server

Apache

Nameservers

ns-64-b.gandi.net.ns-226-a.gandi.net.ns-25-c.gandi.net.

Performance

83

Core Web Vitals

Weight

First Contentful Paint
2.0 s10%
Speed Index
2.5 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1023 KB
27 requests

Image Optimization

Lazy LoadResponsive
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

4 Technologies Detected

Libraries

1
jQueryv3.7.1

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Apache

Plugins

1
Menu Image

SEO Analysis

B72/100
22
6
1
Meta Tags9/15
Content11/12
Headings8/8
Technical16/25
E-E-A-T3/7
Images6/7
Links5/5
URL5/5
Social0/5
Freshness2/4
Mobile4/4
Indexability3/3
B
bootlin.combootlin.com

Bootlin – Embedded Linux and kernel engineering

No description available for this page.

Title Length47 chars

Recommended: 50-60 chars (~281px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing meta description — important for click-through rates in SERPs

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

6 URLs

6 sub-sitemaps

robots.txt

4 rules

Sitemap reference found

Local SEO

Local Search Readiness

8/100
Poor
3 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

D46/100
Bot Access
20/25
Machine Read.
14/25
Schema Data
0/25
Citation
12/25

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:22%
Words:2,689
Token eff.:Optimal
Sections/1K:5.2
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary52w
Descriptive Headingsavg 6.3w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (6)
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.
A
87/100
15
Passed
0
Critical
1
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
10/15
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
7/15
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.
69/100
B
103 mg
CO₂e / view
1023.0 KB
Page Weight
70%
Cleaner Than
New Visitor
118 mg
vs
Returning (cached)
59 mg
Annual (10K/mo)
12.4 kg
Emission Segments
Data Center
5 mg
Network
30 mg
Device
68 mg
Resource Breakdown
JavaScript
37.3 KB
Images
872.0 KB
CSS
95.6 KB
HTML
18.1 KB
Green Hosting Verified
OVHcloud
GWF Verified
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

21%Critical
Interactive

HTTPS

No WAF

89d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp384r1) (384 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

29.04.2026

Valid Until

28.07.2026

Subject Alternative Names (2)

bootlin.comwww.bootlin.com

SHA-256 Fingerprint

5B:0D:71:46:2F:EA:36:81:11:11:85:1F:B2:82:B3:CA:CF:DE:CB:39...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🟡 1 Hours(max-age=3600)
connection
Keep-Alive
content-encoding
📦 Gzip(gzip)
content-length
18214
content-type
text/html; charset=UTF-8
date
Wed, 29 Apr 2026 19:43:38 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

95

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

smtpin-02.galae.net
smtpin-01.galae.net

Domain Information

bootlin.com

Domain Age
8y 4m

Created

22.12.2017

Expires

22.12.2026

Last Updated

23.10.2025

Registrar

Gandi SAS

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.
B
77/100
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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Montserrat

WCAG AA
83/100
Readability
/30
24/30

16px · LH 1.75

Hierarchy
/20
17/20

1.75x ratio · ✓ H1→H6

WCAG
/25
22/25

4.51:1 min contrast

Performance
/25
20/25

1 font · 2 req

Heading Font

Montserrat

Sans28px

Body Font

Montserrat

Sans16px

Contrast Ratio

4.51:1

WCAG AA (≥4.5:1)

Reading Comfort

~36 CPL

Narrow lines
28px
h1
40px
h2
16px
p
Augmented Fourth
Scale

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

⚠️ Hard to read: Flesch score 34/100. Simplify sentences for wider reach.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 4.5:1).

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

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

✅ Smart font loading: font-display: swap prevents invisible text during load (FOIT).

Buy on MyFontsFlesch 34

Color Palette

10 unique colors
19.78:1 AAA Light
#ffffff
Background· 78.1%
#0a0a0c
Secondary· 1.7%
#1aaddd
Primary· 3.6%
#d1d9db
Border· 2.5%
#a3d5e5
Accent· 1.3%

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

9 Resources

3
Scripts
6
Styles
0
Async
1
Defer

Top Script Sources

bootlin.com(3)

Website Identity

bootlin.com

training@bootlin.com
8 years old
Location detected: 🇫🇷 Francevia ip
Gandi SASen-US

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Last analyzed: 29 Apr 2026 at 19:43

Historical Analysis & Change Tracking