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21kschool.com

https://21kschool.com· First analyzed 29 May 2026· Updated 29 May 2026
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21kschool.com
Desktop screenshot of 21kschool.com
Mobile screenshot of 21kschool.com
Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

13.202.19.174

Site Location

🇮🇳 Bangalore, Indiavia schema_nap

Server Location

🇮🇳 Mumbai, India

ASN

AS16509

Organization

AWS EC2 (ap-south-1)

Server

Apache

Nameservers

ns54.domaincontrol.com.ns53.domaincontrol.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
346 ms10%
Speed Index
450 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
3 MB
112 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
CMS
WordPressv6.7.2
Infrastructure
Hosting
Amazon Web Services (AWS)

Technology Stack

15 Technologies Detected

Analytics

4
Google Analytics
Google Analytics 4
Facebook PixelMicrosoft Clarity

CSS Frameworks

2
Bootstrap
Tailwind CSS

Libraries

1
jQueryv3.7.1

UI Components

1
Owl Carousel

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Advertising

1
LinkedIn Ads

Web Servers

1
Apachev2.4.52

Security

1
reCAPTCHA

Plugins

1
Yoast SEO

SEO Analysis

A+90/100
28
3
0
Meta Tags14/15
Content11/12
Headings8/8
Technical25/25
E-E-A-T2/7
Images7/7
Links4/5
URL5/5
Social4/5
Freshness4/4
Mobile3/4
Indexability3/3
2
21kschool.com21kschool.com

#1 Best Online School in India | Admissions Open 2026-27

21K School – 1st Accredited online school in India. Offers personalized, flexible learning with the best curriculums. Enroll now for the brightest future of ...

Description truncated.
Title Length56 chars

Recommended: 50-60 chars (~333px / 580px)

Description Length166 chars

Recommended: 120-160 chars

Issues (0)

    3 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    7 URLs

    7 sub-sitemaps

    robots.txt

    414 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    54/100
    Fair
    15 7

    Sponsored

    AI & LLM Readiness

    C64/100
    Bot Access
    20/25
    Machine Read.
    12/25
    Schema Data
    16/25
    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.txtvalid
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    Text ratio:9%
    Words:4,747
    Token eff.:Poor Structure

    Structured Data

    6 JSON-LD
    FAQPage×1.5Person×1.3Organization×1.1WebSiteBreadcrumbListSearchAction
    sameAs entity links

    Citation Readiness

    Opening Summary18w
    Descriptive Headingsavg 5.4w
    Canonical URL
    Open Graph3/3
    Twitter Card1/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (9)
    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
    58/100
    9
    Passed
    4
    Critical
    3
    Warnings
    Images & Alt Text
    15/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    16/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    2/15
    Verifies form fields have labels, error messages are clear, and inputs are properly associated.
    Color & Contrast
    12/15
    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
    4/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    4 recommendations
    • •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.
    50/100
    E
    311 mg
    CO₂e / view
    3.0 MB
    Page Weight
    30%
    Cleaner Than
    New Visitor
    355 mg
    vs
    Returning (cached)
    178 mg
    Annual (10K/mo)
    37.3 kg
    Emission Segments
    Data Center
    15 mg
    Network
    91 mg
    Device
    204 mg
    Resource Breakdown
    JavaScript
    472.8 KB
    Images
    2.2 MB
    CSS
    267.0 KB
    Fonts
    1.1 KB
    HTML
    39.7 KB
    Green Hosting Verified
    Amazon Web Services (AWS)
    Provider Match
    5 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    36%Critical
    Interactive

    HTTPS

    No WAF

    66d

    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

    05.05.2026

    Valid Until

    03.08.2026

    Subject Alternative Names (2)

    21kschool.comwww.21kschool.com

    SHA-256 Fingerprint

    22:C3:3E:8F:03:8B:C8:45:A3:30:06:16:D4:76:FF:B4:45:8A:0F:1F...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🟡 600s(private, max-age=600, must-revalidate)
    content-encoding
    📦 Gzip(gzip)
    content-length
    40378
    content-type
    text/html; charset=UTF-8
    date
    Fri, 29 May 2026 01:03:22 GMT
    expires
    Fri, 29 May 2026 02:03:22 GMT
    Good Warning Issue

    Email Infrastructure

    Google Workspace

    Score

    90

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (7)

    alt1.aspmx.l.google.com
    mx2.mailer91.com
    mx1.mailer91.com
    alt4.aspmx.l.google.com

    +3 more

    Domain Information

    21kschool.com

    Domain Age
    6y 1m

    Created

    27.04.2020

    Expires

    27.04.2027

    Last Updated

    09.04.2026

    Registrar

    GoDaddy.com, LLC

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    Privacy policy page linked

    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
    78/100
    Mobile Friendly27 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, maximum-scale=5.0, user-scalable=yes
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Noto Sans

    WCAG Partial
    68/100
    Readability
    /30
    26/30

    18px · LH 1.50

    Hierarchy
    /20
    6/20

    1.94x ratio

    WCAG
    /25
    14/25

    1.62:1 min contrast

    Performance
    /25
    22/25

    1 font · 2 req

    Heading Font

    Noto Sans

    Sans35px

    Body Font

    Noto Sans

    Sans18px

    Contrast Ratio

    1.62:1

    2 issues

    Reading Comfort

    ~41 CPL

    Narrow lines
    35px
    h1
    35px
    h2
    25px
    h3
    11px
    h4
    18px
    p

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

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

    ❌ Very complex text: Flesch score 25/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 1.6:1).

    ❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

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

    GGoogle FontsBuy on MyFontsVariable FontsFlesch 25

    Color Palette

    7 unique colors
    Light
    #ececec
    Background· 37.699999999999996%
    #02366d
    Primary· 11.3%
    #fabe24
    Accent· 5.9%
    #b6cacf
    Secondary· 5.1%
    #355d7f
    Secondary· 4.8%
    #a48681
    Secondary· 4.6%

    Business & Marketing Stack

    6 Tools Detected

    Enterprise

    Behavior Analytics

    4
    Google Tag ManagerFree
    Google AnalyticsFree
    Microsoft ClarityFree
    ContentsquareEnterprise

    User behavior and product analytics

    Advertising

    2
    Facebook PixelMid-Market
    LinkedIn AdsEnterprise

    Ad platforms and retargeting pixels

    2

    Categories

    6

    Total Tools

    2

    Enterprise

    1

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Sponsored

    Scripts & Styles

    30 Resources

    20
    Scripts
    10
    Styles
    17
    Async
    2
    Defer

    Top Script Sources

    clarity.ms(7)googletagmanager.com(3)snap.licdn.com(2)connect.facebook.net(2)21kschool.com(2)

    Website Identity

    21K School

    21K School

    Organization

    21K School is an accredited online K-12 school offering CBSE, Cambridge International and Pearson Edexcel curricula to learners across 78+ countries.

    +919663213636
    www.21kschool.com/in/
    6 years old

    541, 5th main, 16th Cross Rd, 2nd Stage, Hoysala Nagar, Indiranagar, Bangalore

    560038, Bangalore, KA

    IN

    Location detected: 🇮🇳 India, Bangalorevia schema_nap
    GoDaddy.com, LLC📧 Google Workspaceen-INEst. 2020

    Sponsored

    Last analyzed: 29 May 2026 at 01:03

    Historical Analysis & Change Tracking

    21kschool.com Technology Stack - Built With jQuery, Owl Carousel, Bootstrap, Tailwind CSS, Font Awesome | StackOptic | StackOptic