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mathiasbynens.be

https://mathiasbynens.be· First analyzed 01 May 2026· Updated 01 May 2026
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mathiasbynens.be
Desktop screenshot of mathiasbynens.be
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Mobile

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Hosting Provider

Quickhost B.V

IP Address

83.137.145.144

Site Location

🇧🇪 Belgiumvia tld

Server Location

🇳🇱 Blauwestad, Netherlands

ASN

AS31477

Organization

Quickhost B.V

Server

Apache

Nameservers

ns1.exsilia.net.ns2.exsilia.net.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
648 ms10%
Speed Index
842 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
21 KB
5 requests

Image Optimization

Responsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Quickhost B.V

Progressive Web App

Web Manifest

Technology Stack

2 Technologies Detected

Libraries

1
jQueryv2.2.0

Web Servers

1
Apache

SEO Analysis

C60/100
17
11
1
Meta Tags7/15
Content8/12
Headings6/8
Technical18/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social0/5
Freshness2/4
Mobile4/4
Indexability3/3
M
mathiasbynens.bemathiasbynens.be

Mathias Bynens

Mathias Bynens is a web standards enthusiast currently working on Chrome at Google.

Title Length14 chars

Recommended: 50-60 chars (~87px / 580px)

Description Length83 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (1/1) — critical for accessibility and SEO

12 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

58 URLs

robots.txt

8 rules

Local SEO

Local Search Readiness

3/100
Poor
1 14 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

D50/100
Bot Access
20/25
Machine Read.
17/25
Schema Data
3/25
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 blocksnavheader/footer
Text ratio:40%
Words:388
Token eff.:Optimal
Sections/1K:2.6
Depth:3/5

Structured Data

Microdata
Article×1.2microdata

Citation Readiness

Opening Summary29w
Descriptive Headingsavg 2w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (8)
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.
B
78/100
10
Passed
3
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
18/20
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...
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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.
62/100
A+
3 mg
CO₂e / view
21.0 KB
Page Weight
95%
Cleaner Than
New Visitor
3 mg
vs
Returning (cached)
2 mg
Annual (10K/mo)
312 g
Emission Segments
Data Center
<0.001 g
Network
<0.001 g
Device
1 mg
Resource Breakdown
JavaScript
15.0 KB
HTML
2.4 KB
Other
3.6 KB
Green Hosting Not Verified
Quickhost B.V
3 recommendations
  • •Carbon footprint recommendation preview...
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A+

Security Score

91%Excellent
Static / Informational

HTTPS

No WAF

88d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

29.04.2026

Valid Until

28.07.2026

Subject Alternative Names (6)

*.mathiasbynens.bebynens.eumathiasbynens.bemathibus.comwww.bynens.euwww.mathibus.com

SHA-256 Fingerprint

AF:32:36:68:61:76:98:52:3C:4A:BE:72:C4:E7:5F:4E:30:41:35:C5...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🟡 0s(max-age=0)
content-encoding
📦 Gzip(gzip)
content-length
2171
content-type
text/html; charset=UTF-8
date
Fri, 01 May 2026 00:41:44 GMT
expires
Fri, 01 May 2026 00:41:44 GMT
Good Warning Issue

Email Infrastructure

Google Workspace

Score

45

SPF
DKIM
DMARC

MX Records (6)

aspmx2.googlemail.com
aspmx5.googlemail.com
aspmx.l.google.com
alt2.aspmx.l.google.com

+2 more

Domain Information

mathiasbynens.be

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.
D
55/100
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.
Viewport
width=device-width
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

sans-serif

WCAG Partial
65/100
Readability
/30
24/30

17px · LH 1.60

Hierarchy
/20
10/20

1.25x ratio

WCAG
/25
17/25

3.86:1 min contrast

Performance
/25
14/25

0 fonts

Heading Font

sans-serif

Sans21px

Body Font

sans-serif

Sans17px

Contrast Ratio

3.86:1

23 issues

Reading Comfort

~43 CPL

Narrow lines
21px
h1
21px
h2
17px
p
Minor Second
Scale

✅ Excellent readability: 17px body text is ideal for all devices.

✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 32/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 23 elements below WCAG AA threshold (min 3.9:1).

⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

Flesch 32

Color Palette

9 unique colors
5.39:1 AA Light
#ffffff
Background· 41.9%
#766765
Secondary· 0.6%
#336799
Primary· 35%
#c6d6de
Secondary· 3.5%
#7e9aae
Secondary· 2%
#364c62
Secondary· 0.4%

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Scripts & Styles

3 Resources

2
Scripts
1
Styles
0
Async
0
Defer

Top Script Sources

ajax.googleapis.com(1)local(1)

Website Identity

mathiasbynens.be

Location detected: 🇧🇪 Belgiumvia tld
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Last analyzed: 01 May 2026 at 00:41

Historical Analysis & Change Tracking