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pqrs.org

https://pqrs.org· First analyzed 30 Apr 2026· Updated 30 Apr 2026
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pqrs.org
Desktop screenshot of pqrs.org
Mobile screenshot of pqrs.org
Mobile

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Hosting Provider

Architectural Systems Inc.

IP Address

133.242.162.147

Site Location

🇯🇵 Japanvia ip

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS7684

Organization

Architectural Systems Inc.

Server

Nginx

CDN

Cloudflare

WAF

Cloudflare

Nameservers

irma.ns.cloudflare.com.dean.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
623 ms10%
Speed Index
810 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
142 KB
14 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
Infrastructure
Hosting
Architectural Systems Inc.
CDN
Cloudflare

Technology Stack

4 Technologies Detected

CSS Frameworks

2
Bootstrap
Tailwind CSS

Libraries

1
jQueryv3.7.1

Web Servers

1
Nginxv1.24.0

SEO Analysis

D42/100
12
10
1
Meta Tags4/15
Content7/12
Headings4/8
Technical9/21
E-E-A-T0/7
Images4/7
Links2/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
P
pqrs.orgpqrs.org

pqrs.org

No description available for this page.

Title Length8 chars

Recommended: 50-60 chars (~47px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

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

11 issues found

Upgrade to view details

Local SEO

Local Search Readiness

0/100
Poor
15 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

F27/100
Bot Access
20/25
Machine Read.
6/25
Schema Data
0/25
Citation
1/25

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
header/footer
Text ratio:11%
Words:149
Token eff.:Too Short
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary
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 (10)
AI readiness recommendation preview...
Upgrade to view recommendations

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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
73/100
8
Passed
4
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
13/20
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...
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.
60/100
A+
18 mg
CO₂e / view
141.9 KB
Page Weight
95%
Cleaner Than
New Visitor
20 mg
vs
Returning (cached)
10 mg
Annual (10K/mo)
2.1 kg
Emission Segments
Data Center
4 mg
Network
4 mg
Device
9 mg
Resource Breakdown
JavaScript
2.6 KB
Images
135.4 KB
CSS
1.2 KB
HTML
2.8 KB
Green Hosting Not Verified
Architectural Systems Inc.
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A

Security Score

81%Very Good
Static / Informational

HTTPS

No WAF

71d

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

12.04.2026

Valid Until

11.07.2026

Subject Alternative Names (3)

appcast.pqrs.orgpqrs.orgu.pqrs.org

SHA-256 Fingerprint

78:FB:76:A6:FD:90:2A:0A:96:10:1E:DC:77:D1:BE:EA:4F:20:BA:31...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding
📦 Gzip(gzip)
content-type
text/html
date
Thu, 30 Apr 2026 14:49:18 GMT
etag
W/"6892a2b1-2978"
last-modified
Wed, 06 Aug 2025 00:32:49 GMT
server
nginx/1.24.0 (Ubuntu)
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

75

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

pqrs.org

Domain Information

pqrs.org

Domain Age
22 years

Created

20.04.2004

Expires

20.04.2027

Last Updated

26.03.2026

Registrar

Cloudflare, Inc.

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
58/100
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, shrink-to-fit=no
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Times New Roman

WCAG Partial
63/100
Readability
/30
20/30

16px · LH --

Hierarchy
/20
12/20

1.5x ratio

WCAG
/25
17/25

2.06:1 min contrast

Performance
/25
14/25

1 font

Heading Font

Times New Roman

Serif24px

Body Font

Times New Roman

Serif16px

Contrast Ratio

2.06:1

3 issues

Reading Comfort

Single Font Family

left aligned
24px
h1

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

⚠️ Hard to read: Flesch score 33/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 3 elements below WCAG AA threshold (min 2.1:1).

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

✅ 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 33

Color Palette

8 unique colors
Light
#ffffff
Background· 88.4%
#3174db
Primary· 2.1%
#dbe0e3
Border· 1.9%
#a0abbc
Secondary· 1.8%
#345187
Secondary· 1.4%
#7484a6
Secondary· 1.1%

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

4 Resources

2
Scripts
2
Styles
0
Async
0
Defer

Top Script Sources

code.jquery.com(1)assets(1)

Website Identity

pqrs.org

22 years old
Location detected: 🇯🇵 Japanvia ip
Cloudflare, Inc.

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Last analyzed: 30 Apr 2026 at 14:49

Historical Analysis & Change Tracking