bcl.lu

https://bcl.lu· First analyzed 17 May 2026· Updated 17 May 2026

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bcl.lu

Mobile

Sponsored

Hosting Provider

Worldline Financial Services (Europe) S.A

IP Address

217.117.196.133

Site Location

🇱🇺 Luxembourgvia tld

Server Location

🇱🇺 Bertrange, Luxembourg

ASN

AS3347

Organization

Worldline Financial Services (Europe) S.A

Nameservers

ns1.pt.lu.ns3.pt.lu.ns2.pt.lu.

Performance

Core Web Vitals

Weight

First Contentful Paint

856 ms10%

Speed Index

1.1 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.6 MB

54 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Worldline Financial Services (Europe) S.A

Technology Stack

2 Technologies Detected

CSS Frameworks

Tailwind CSS

Icon Libraries

Font Awesome

SEO Analysis

D56/100

Meta Tags10/15

Content12/12

Headings3/8

Technical13/25

E-E-A-T0/7

Images4/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

bcl.lubcl.lu

Banque centrale du Luxembourg - Français

Title Length40 chars

Recommended: 50-60 chars (~246px / 580px)

Description Length1 chars

Recommended: 120-160 chars

Issues (1)

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

11 issues found

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Crawlability

Sitemap

Type: standard

robots.txt

7 rules

Local SEO

Local Search Readiness

15/100

Poor

5 10 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

F32/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

0/25

Citation

5/25

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.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

nav

Text ratio:9%

Words:3,238

Token eff.:Poor Structure

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary511w

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 (12)

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.

71/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

9/20

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

6/15

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.

10/100

326 mg

CO₂e / view

2.6 MB

Page Weight

30%

Cleaner Than

New Visitor

373 mg

Returning (cached)

186 mg

Annual (10K/mo)

39.1 kg

Emission Segments

Data Center

73 mg

Network

78 mg

Device

175 mg

Resource Breakdown

JavaScript

161.1 KB

Images

1.3 MB

CSS

870.5 KB

HTML

246.3 KB

Other

8.2 KB

Green Hosting Not Verified

Worldline Financial Services (Europe) S.A

8 recommendations

•Carbon footprint recommendation preview...

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Security Score

36%Critical

Interactive

HTTPS

No WAF

75d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

16.07.2025

Valid Until

31.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (3)

www.bcl.lubcl.luhfcs.bcl.lu

SHA-256 Fingerprint

F3:23:A9:09:5B:17:72:3A:A1:3B:BE:4E:E4:66:6E:E5:98:3D:68:33...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

connection

Keep-Alive

content-length

456

content-type

text/html; charset=UTF-8

date

Sun, 17 May 2026 22:15:04 GMT

keep-alive

timeout=5, max=100

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

mailsrv1.bcl.lu

mailsrv2.bcl.lu

Domain Information

bcl.lu

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.

63/100

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

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Helvetica Neue

WCAG Partial

50/100

Readability

/30

10/30

13px · LH 1.15

Hierarchy

/20

5/20

WCAG

/25

16/25

1:1 min contrast

Performance

/25

19/25

System fonts

Heading Font

Helvetica Neue

Sans

Body Font

Helvetica Neue

Sans13px

Contrast Ratio

1:1

23 issues

Reading Comfort

~43 CPL

Narrow lines

14px

13px

❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Tight line spacing (1.15). Increase to 1.4–1.6 for better readability.

⚠️ Partial contrast: 23 elements below WCAG AA threshold (min 1.0:1).

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

⚠️ Text justify detected: Justified text creates uneven word spacing, hurting readability on web.

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

Color Palette

8 unique colors

Light

#ffffff

Background· 38.300000000000004%

#853345

Primary· 8.6%

#2180a4

Accent· 8.5%

#9b8877

Secondary· 6%

#dbd1c5

Secondary· 5.6%

#9aafb8

Secondary· 5.5%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

14 Resources

Scripts

Styles

Async

Defer

Top Script Sources

..(7)cse.google.com(2)google.com(1)

Website Identity

bcl.lu

suspicious@bcl.lu

//352-4774-1

Location detected: 🇱🇺 Luxembourgvia tld

Social Profiles

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Last analyzed: 17 May 2026 at 22:15

Historical Analysis & Change Tracking