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harperhighschool.org

https://harperhighschool.org· First analyzed 11 May 2026· Updated 11 May 2026
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harperhighschool.org
Desktop screenshot of harperhighschool.org
Mobile screenshot of harperhighschool.org
Mobile

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Hosting Provider

OVHcloud
ovhcloud.com

IP Address

51.79.169.55

Site Location

🇸🇬 Singaporevia ip

Server Location

🇸🇬 Singapore, Singapore

ASN

AS16276

Organization

Chao, Chen

Server

Apache

Nameservers

ns18.domaincontrol.com.ns17.domaincontrol.com.

Performance

98

Core Web Vitals

Weight

First Contentful Paint
875 ms10%
Speed Index
1.1 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
208 KB
11 requests

Image Optimization

Lazy LoadWebP
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
Infrastructure
Hosting
OVHcloud

Technology Stack

2 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Apachev2.4

SEO Analysis

A82/100
26
2
1
Meta Tags8/15
Content10/12
Headings6/8
Technical24/25
E-E-A-T7/7
Images6/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile3/4
Indexability3/3
H
harperhighschool.orgharperhighschool.org

คู่มือบาคาร่าออนไลน์เว็บตรงปี 2026 เล่นเป็นระบบ ปลอดภัย ฝากถอนลื่น ...

สรุปทุกเรื่องที่ควรรู้สำหรับบาคาร่าออนไลน์ปี 2026 ตั้งแต่เลือกเว็บตรงที่ไว้ใจได้ ระบบฝากถอนอัตโนมัติ การบริหารทุน อ่านเกมแบบมีวินัย ไปจนถึงคำถามยอดนิยม เพื่อ...

Title truncated. Description truncated.
Title Length82 chars

Recommended: 50-60 chars (~500px / 580px)

Description Length191 chars

Recommended: 120-160 chars

Issues (1)

  • • Title is too long (82 chars, ~500px). Will be truncated in search results.

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

9 URLs

robots.txt

13 rules

Sitemap reference found

Local SEO

Local Search Readiness

9/100
Poor
3 12 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

C64/100
Bot Access
20/25
Machine Read.
14/25
Schema Data
14/25
Citation
16/25

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:13%
Words:393
Token eff.:Optimal
Sections/1K:48.3
Depth:2/5

Structured Data

3 JSON-LD
FAQPage×1.5Article×1.2Person×1.3(min)Organization×1.1BreadcrumbList

Citation Readiness

Opening Summary36w
Descriptive Headingsavg 1.9w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (7)
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.
A
83/100
12
Passed
2
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
18/20
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
11/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
4/15
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.
86/100
A+
21 mg
CO₂e / view
207.9 KB
Page Weight
95%
Cleaner Than
New Visitor
24 mg
vs
Returning (cached)
12 mg
Annual (10K/mo)
2.5 kg
Emission Segments
Data Center
1 mg
Network
6 mg
Device
14 mg
Resource Breakdown
Images
195.1 KB
HTML
12.8 KB
Green Hosting Verified
OVHcloud
Provider Match
3 recommendations
  • •Carbon footprint recommendation preview...
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B

Security Score

71%Good
Static / Informational

HTTPS

No WAF

78d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

30.04.2026

Valid Until

29.07.2026

Subject Alternative Names (2)

harperhighschool.orgwww.harperhighschool.org

SHA-256 Fingerprint

69:87:2B:B0:A0:60:E0:B4:A1:75:3B:5A:B9:A9:85:BA:51:19:6C:97...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges
bytes
content-encoding
⚡ Brotli(br)
content-length
12846
content-type
text/html; charset=utf-8
date
Mon, 11 May 2026 21:03:16 GMT
last-modified
Thu, 05 Mar 2026 13:41:32 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

23

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

Domain Information

harperhighschool.org

Domain Age
18y 1m

Created

15.04.2008

Expires

15.04.2027

Last Updated

25.02.2026

Registrar

GoDaddy.com, LLC

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.
B
77/100
Mobile Friendly3 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=1.0
2 recommendations
  • •Mobile compatibility recommendation preview...
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Typography & Readability

Apple Color Emoji

WCAG Partial
76/100
Readability
/30
24/30

16px · LH 1.50

Hierarchy
/20
20/20

3x ratio · ✓ H1→H6

WCAG
/25
16/25

1.1:1 min contrast

Performance
/25
16/25

1 font

Heading Font

Apple Color Emoji

Sans48px

Body Font

Apple Color Emoji

Sans16px

Contrast Ratio

1.1:1

28 issues

Reading Comfort

~40 CPL

Narrow lines
48px
h1
18px
h2
18px
h3
16px
p

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

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

⚠️ Partial contrast: 28 elements below WCAG AA threshold (min 1.1:1).

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

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

✅ Lean font stack: 1 font families keeps load times fast.

Buy on MyFonts

Color Palette

7 unique colors
Dark
#79766c
Other· 6.5%
#050714
Primary· 48.8%
#0a0332
Accent· 19.7%
#ccb57d
Secondary· 7%
#19202f
Secondary· 5.8%
#473739
Secondary· 5.2%

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

1 Resources

1
Scripts
0
Styles
0
Async
0
Defer

Top Script Sources

cdn.tailwindcss.com(1)

Website Identity

harperhighschool.org

18 years old
Location detected: 🇸🇬 Singaporevia ip
GoDaddy.com, LLCth

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Last analyzed: 11 May 2026 at 21:03

Historical Analysis & Change Tracking