StackOptic
Back to Search
worldwideschool.org favicon

worldwideschool.org

https://worldwideschool.org· First analyzed 19 May 2026· Updated 19 May 2026
Export
worldwideschool.org
Desktop screenshot of worldwideschool.org
Mobile screenshot of worldwideschool.org
Mobile

Sponsored

Hosting Provider

Vercel
vercel.com

IP Address

76.76.21.21

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Walnut, United States

ASN

AS16509

Organization

Vercel, Inc

Server

Vercel

Nameservers

dns2.registrar-servers.com.dns1.registrar-servers.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
441 ms10%
Speed Index
573 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
151 KB
22 requests
0–49
50–89
90–100

Architecture Stack

Hybrid
🔀 Hybrid
Frontend
Framework
Next.js
Styling
Tailwind CSS
Infrastructure
Platform
Vercel

Technology Stack

3 Technologies Detected

Meta Frameworks

1
Next.js

CSS Frameworks

1
Tailwind CSS

Platforms

1
Vercel

SEO Analysis

D50/100
16
5
1
Meta Tags10/15
Content2/12
Headings8/8
Technical15/25
E-E-A-T0/7
Images0/7
Links3/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
W
worldwideschool.orgworldwideschool.org

World Wide School: Free, Online Library of Public Domain Texts

World Wide School is a free, online library of public domain texts.

Title Length62 chars

Recommended: 50-60 chars (~371px / 580px)

Description Length67 chars

Recommended: 120-160 chars

Issues (1)

  • • Very thin content (34 words). Search engines need substantial content for ranking.

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

67 URLs

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

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.

Sponsored

AI & LLM Readiness

F32/100
Bot Access
20/25
Machine Read.
7/25
Schema Data
0/25
Citation
5/25

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
navheader/footer
Text ratio:2%
Words:24
Token eff.:Too Short
Sections/1K:20
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary
Descriptive Headingsavg 1.5w
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

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.
A
80/100
13
Passed
1
Critical
1
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
20/20
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.
80/100
A+
15 mg
CO₂e / view
150.6 KB
Page Weight
95%
Cleaner Than
New Visitor
17 mg
vs
Returning (cached)
9 mg
Annual (10K/mo)
1.8 kg
Emission Segments
Data Center
<0.001 g
Network
5 mg
Device
10 mg
Resource Breakdown
JavaScript
126.2 KB
CSS
3.8 KB
HTML
3.4 KB
Other
17.2 KB
Green Hosting Verified
Vercel
Provider Match
1 recommendation
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

76%Good
Static / Informational

HTTPS

No WAF

64d

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

24.04.2026

Valid Until

23.07.2026

Subject Alternative Names (1)

worldwideschool.org

SHA-256 Fingerprint

C5:80:39:EF:DF:75:DD:1F:74:51:6F:C1:07:64:B8:70:37:17:8F:4D...

Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin
*
age
1019922
cache-control
🟡 0s(public, max-age=0, must-revalidate)
content-disposition
inline
content-encoding
⚡ Brotli(br)
content-type
text/html; charset=utf-8
Good Warning Issue

Email Infrastructure

Google Workspace

Score

20

SPF
DKIM
DMARC

MX Records (1)

smtp.google.com

Domain Information

worldwideschool.org

Domain Age
28y 7m

Created

16.10.1997

Expires

15.10.2026

Last Updated

20.09.2025

Registrar

NameCheap, 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.
C
69/100
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, initial-scale=1
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Arial + Spot Mono

WCAG Partial
75/100
Readability
/30
20/30

18px · LH 1.38

Hierarchy
/20
18/20

3.05x ratio · ✓ H1→H6

WCAG
/25
17/25

3.54:1 min contrast

Performance
/25
20/25

System fonts

Heading Font

Arial

Sans53px

Body Font

Spot Mono

Mono18px

Contrast Ratio

3.54:1

1 issue

Reading Comfort

Sans-Serif Pairing

left aligned
53px
h1
27px
h2
18px
p

✅ Excellent readability: 18px body text is ideal for all devices.

⚠️ Tight line spacing (1.38). Increase to 1.4–1.6 for better readability.

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 3.5:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

✅ Strong hierarchy: Headlines are 3.0x larger than body text.

✅ System fonts: Zero font loading delay — best possible LCP impact.

Color Palette

5 unique colors
15.08:1 AAA Light
#ffffff
Background· 97.09999999999998%
#272627
Other· 0.7%

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

Sponsored

Scripts & Styles

11 Resources

10
Scripts
1
Styles
8
Async
1
Defer

Top Script Sources

local(10)

Website Identity

worldwideschool.org

28 years old
Location detected: 🇺🇸 United Statesvia ip
NameCheap, Inc.📧 Google Workspaceen

Sponsored

Last analyzed: 19 May 2026 at 12:29

Historical Analysis & Change Tracking