quirksmode.org

https://quirksmode.org· First analyzed 23 Apr 2026· Updated 23 Apr 2026

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quirksmode.org

Mobile

Sponsored

Hosting Provider

Signet B.V

IP Address

85.10.159.35

Site Location

🇳🇱 Netherlandsvia ip

Server Location

🇳🇱 Eindhoven, The Netherlands

ASN

AS34762

Organization

Signet B.V

Server

Nginx

Nameservers

ns2.transip.eu.ns1.transip.nl.ns0.transip.net.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

288 ms10%

Speed Index

374 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

25 KB

9 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Signet B.V

Technology Stack

1 Technologies Detected

Web Servers

Nginx

SEO Analysis

D40/100

Meta Tags9/15

Content5/12

Headings0/8

Technical7/21

E-E-A-T0/7

Images4/7

Links3/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

quirksmode.orgquirksmode.org

QuirksMode - for all your browser quirks

No description available for this page.

Title Length40 chars

Recommended: 50-60 chars (~247px / 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)

10 issues found

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Local SEO

Local Search Readiness

6/100

Poor

2 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

F33/100

Bot Access

20/25

Machine Read.

4/25

Schema Data

0/25

Citation

9/25

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

Text ratio:27%

Words:59

Token eff.:Too Short

Structured Data

No Schema

Citation Readiness

Opening Summary26w

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 (9)

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.

66/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

6/20

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.

2 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.

71/100

A+

3 mg

CO₂e / view

25.5 KB

Page Weight

95%

Cleaner Than

New Visitor

3 mg

Returning (cached)

2 mg

Annual (10K/mo)

312 g

Emission Segments

Data Center

<0.001 g

Network

<0.001 g

Device

2 mg

Resource Breakdown

JavaScript

1.0 KB

Images

17.1 KB

CSS

6.4 KB

HTML

1.0 KB

Green Hosting Verified

Combell

GWF Verified

3 recommendations

•Carbon footprint recommendation preview...

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Security Score

71%Good

Static / Informational

HTTPS

No WAF

69d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

02.04.2026

Valid Until

01.07.2026

Subject Alternative Names (3)

quirksmode.orgquirkt.site.transip.mewww.quirksmode.org

SHA-256 Fingerprint

B3:65:76:FE:79:65:39:7D:B0:1A:EC:F0:39:25:6E:46:47:55:A3:31...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding

⚡ Brotli(br)

content-type

text/html

date

Thu, 23 Apr 2026 03:19:37 GMT

server

nginx

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

mx.transip.email

Domain Information

quirksmode.org

Domain Age

22y 11m

Created

22.05.2003

Expires

22.05.2026

Last Updated

08.04.2026

Registrar

Key-Systems GmbH

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.

32/100

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

georgia

WCAG Partial

54/100

Readability

/30

16/30

13px · LH 1.40

Hierarchy

/20

10/20

WCAG

/25

14/25

1:1 min contrast

Performance

/25

14/25

1 font

Heading Font

georgia

Body Font

georgia

Serif13px

Contrast Ratio

1:1

4 issues

Reading Comfort

~36 CPL

Narrow lines

13px

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

✅ Optimal line spacing: 1.40 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 46/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 1.0:1).

✅ 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 46

Color Palette

6 unique colors

2.92:1 Fail Light

#ffffff

Background· 35.400000000000006%

#94979f

Other· 1.6%

#bcbdad

Primary· 42.9%

#4a5492

Secondary· 17.2%

#15873c

Accent· 0.4%

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Scripts & Styles

3 Resources

Scripts

Styles

Async

Defer

Top Script Sources

homepage.js(1)statcounter.com(1)

Website Identity

quirksmode.org

22 years old

Location detected: 🇳🇱 Netherlandsvia ip

Key-Systems GmbHen

Sponsored

Last analyzed: 23 Apr 2026 at 03:19

Historical Analysis & Change Tracking