q4os.org

https://q4os.org· First analyzed 15 May 2026· Updated 15 May 2026

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q4os.org

Mobile

Sponsored

Hosting Provider

Websupport s.r.o.

IP Address

37.9.175.211

Site Location

🇸🇰 Slovakiavia ip

Server Location

🇸🇰 Bratislava, Slovakia

ASN

AS51013

Organization

Websupport s.r.o.

Server

OpenResty

Nameservers

ns1.websupport.cz.ns2.websupport.cz.ns3.websupport.eu.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

328 ms10%

Speed Index

426 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.1 MB

14 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Websupport s.r.o.

Technology Stack

1 Technologies Detected

Web Servers

OpenResty

SEO Analysis

D54/100

Meta Tags7/15

Content10/12

Headings6/8

Technical10/25

E-E-A-T0/7

Images4/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

q4os.orgq4os.org

Q4OS - desktop operating system

No description available for this page.

Title Length31 chars

Recommended: 50-60 chars (~198px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

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

10 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

2 rules

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.

Sponsored

AI & LLM Readiness

D40/100

Bot Access

20/25

Machine Read.

13/25

Schema Data

0/25

Citation

7/25

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:29%

Words:467

Token eff.:Optimal

Sections/1K:6.4

Structured Data

No Schema

Citation Readiness

Opening Summary53w

Descriptive Headingsavg 3w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

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.

72/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

12/20

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.

64/100

110 mg

CO₂e / view

1.1 MB

Page Weight

70%

Cleaner Than

New Visitor

126 mg

Returning (cached)

63 mg

Annual (10K/mo)

13.2 kg

Emission Segments

Data Center

5 mg

Network

32 mg

Device

72 mg

Resource Breakdown

Images

1021.5 KB

CSS

65.8 KB

HTML

2.9 KB

Green Hosting Verified

Websupport.sk

GWF Verified

3 recommendations

•Carbon footprint recommendation preview...

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Security Score

76%Good

Static / Informational

HTTPS

No WAF

52d

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+H3

Valid From

07.04.2026

Valid Until

06.07.2026

Subject Alternative Names (2)

q4os.orgwww.q4os.org

SHA-256 Fingerprint

1E:A2:4B:56:8E:22:C7:5F:E8:E0:F2:FE:FE:81:08:41:C8:41:41:29...

Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

content-encoding

⚡ Brotli(br)

content-security-policy

upgrade-insecure-requests

content-type

text/html

date

Fri, 15 May 2026 06:41:31 GMT

etag

W/"2728-64fbe12b8211b"

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mailin1.q4os.org

mailin2.q4os.org

Domain Information

q4os.org

Domain Age

14y 2m

Created

27.02.2012

Expires

27.02.2027

Last Updated

04.02.2026

Registrar

Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USA

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.

43/100

Not 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.

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

lucida sans unicode + arial

WCAG Partial

57/100

Readability

/30

15/30

14px · LH 1.70

Hierarchy

/20

8/20

1.5x ratio

WCAG

/25

14/25

1.5:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

lucida sans unicode

Mono22px

Body Font

arial

Sans14px

Contrast Ratio

1.5:1

21 issues

Reading Comfort

~80 CPL

Wide lines

22px

14px

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

⚠️ Wide lines: ~80 chars/line. Use max-width: 65ch for comfortable reading.

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

⚠️ Partial contrast: 21 elements below WCAG AA threshold (min 1.5:1).

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

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

Buy on MyFontsFlesch 46

Color Palette

4 unique colors

Light

#efefef

Background· 45.49999999999999%

#505c86

Primary· 11.5%

#b5bbc5

Secondary· 8.1%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

2 Resources

Scripts

Styles

Async

Defer

Top Script Sources

Website Identity

q4os.org

14 years old

Location detected: 🇸🇰 Slovakiavia ip

Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USAen

Social Profiles

X (Twitter)

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Last analyzed: 15 May 2026 at 06:41

Historical Analysis & Change Tracking