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1728.org

https://1728.org· First analyzed 09 May 2026· Updated 09 May 2026
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1728.org
Desktop screenshot of 1728.org
Mobile screenshot of 1728.org
Mobile

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Hosting Provider

Cloudflare
cloudflare.com

IP Address

188.114.97.3

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

CloudFlare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

hasslo.ns.cloudflare.com.sonia.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
299 ms10%
Speed Index
389 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
461 KB
36 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Cloudflare
CDN
Cloudflare

Technology Stack

12 Technologies Detected

Advertising

4
Google AdsGoogle AdSenseCriteoOutbrain

Analytics

3
Google Analytics
Google Analytics 4
Clicky

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Material Icons

Fonts

1
Google Fonts

Payments

1
Square

CDN

1
Cloudflare

SEO Analysis

D52/100
12
12
2
Meta Tags8/15
Content10/12
Headings6/8
Technical11/25
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile3/4
Indexability3/3
1
1728.org1728.org

CALCULATOR CITY: Resource for Mathematics, Algebra, Geometry, Trigo...

Calculator City, calculators for algebra, geometry, trigonometry, calculus, finance, astronomy, physics, chemistry, time cards, HTML Colors, percentages, fra...

Title truncated. Description truncated.
Title Length138 chars

Recommended: 50-60 chars (~841px / 580px)

Description Length163 chars

Recommended: 120-160 chars

Issues (2)

  • • Title is too long (138 chars, ~841px). Will be truncated in search results.
  • • Most images missing alt text (17/20) — critical for accessibility and SEO

14 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

1 URLs

1 sub-sitemaps

robots.txt

5 rules

Sitemap reference found

Allows all crawlers

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.

Sponsored

AI & LLM Readiness

F28/100
Bot Access
20/25
Machine Read.
2/25
Schema Data
0/25
Citation
6/25

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:12%
Words:8,673
Token eff.:Excessive
Sections/1K:1.4

Structured Data

No Schema

Citation Readiness

Opening Summary26w
Descriptive Headingsavg 3.6w
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...
Upgrade to view recommendations

Sponsored

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.
D
53/100
7
Passed
7
Critical
1
Warnings
Images & Alt Text
5/20
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
10/15
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.
4 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.
54/100
A
47 mg
CO₂e / view
461.4 KB
Page Weight
90%
Cleaner Than
New Visitor
53 mg
vs
Returning (cached)
27 mg
Annual (10K/mo)
5.6 kg
Emission Segments
Data Center
2 mg
Network
14 mg
Device
31 mg
Resource Breakdown
JavaScript
368.7 KB
Images
79.5 KB
Fonts
6.2 KB
HTML
7.1 KB
Green Hosting Verified
Cloudflare
GWF Verified
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

0%Critical
Critical / Transactional

HTTPS

WAF

49d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

30.03.2026

Valid Until

28.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

1728.org*.1728.org

SHA-256 Fingerprint

18:52:1D:37:8A:9A:B3:E1:16:9E:E0:DD:D4:43:9E:9A:21:C1:CF:C3...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

alt-svc
h3=":443"; ma=86400
cf-cache-status
DYNAMIC
cf-ray🇮🇹 Milan
9f8eb0cc8c195246-MXP
content-encoding
zstd
content-type
text/html; charset=UTF-8
date
Sat, 09 May 2026 06:36:34 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

45

SPF
DKIM
DMARC

MX Records (3)

route2.mx.cloudflare.net
route3.mx.cloudflare.net
route1.mx.cloudflare.net

Domain Information

1728.org

Domain Age
25y 11m

Created

14.06.2000

Expires

14.06.2026

Last Updated

25.11.2025

Registrar

Internet Domain Service BS Corp

DNSSEC
Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner
Quantcast Choice
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Quantcast Choice
Privacy policy page linked
Legitimate interest basis mentioned

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.
C
62/100
Mobile Friendly11 breakpoints
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
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Arial

WCAG Partial
71/100
Readability
/30
23/30

16px · LH --

Hierarchy
/20
16/20

2x ratio

WCAG
/25
18/25

3.95:1 min contrast

Performance
/25
14/25

System fonts

Heading Font

Arial

Sans32px

Body Font

Arial

Sans16px

Contrast Ratio

3.95:1

2 issues

Reading Comfort

~53 CPL

Optimal (45–75)
32px
h1
14px
h2
19px
h3
16px
p

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

✅ Optimal line length: ~52 chars/line (ideal 45–75 CPL).

⚠️ Hard to read: Flesch score 43/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 4.0:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

GGoogle FontsFlesch 43

Color Palette

8 unique colors
5.74:1 AA Dark
#666666
Other· 65.30000000000001%
#ffffff
Background· 21%
#515265
Primary· 4.5%
#eef0f1
Secondary· 2.3%
#38394f
Secondary· 2.1%
#275eae
Accent· 1.4%
#5c7596
Secondary· 0.4%

Business & Marketing Stack

2 Tools Detected

Advanced

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

Advertising

1
Google AdsEnterprise

Ad platforms and retargeting pixels

2

Categories

2

Total Tools

1

Enterprise

0

Mid-Market

Assessment: Well-developed marketing technology stack

Ad Networks

Google AdSenseMedia.netSovrnPubMaticOpenXIndex Exchange

Sponsored

Scripts & Styles

11 Resources

10
Scripts
1
Styles
8
Async
0
Defer

Top Script Sources

pagead2.googlesyndication.com(4)fundingchoicesmessages.google.com(2)d31qbv1cthcecs.cloudfront.net(1)static.getclicky.com(1)googletagmanager.com(1)

Website Identity

1728.org

25 years old
Location detected: 🇨🇦 Canadavia ip
Internet Domain Service BS Corp

Social Profiles

FacebookX (Twitter)

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Last analyzed: 09 May 2026 at 06:36

Historical Analysis & Change Tracking