What does StackOptic analyze?

StackOptic runs 18 analysis modules on any public website from a single URL. It detects 7,000+ technologies (CMS, frameworks, analytics, payments, CDN, hosting), evaluates SSL certificates and HTTP security headers with grades from A+ to F, measures Core Web Vitals (LCP, CLS, TBT, FCP), audits SEO meta tags and structured data, checks email security (SPF, DKIM, DMARC), analyzes AI & LLM readiness including bot access and llms.txt validation, extracts color palettes and typography, estimates carbon footprint, and generates permanent shareable reports.

Does it work on sites behind Cloudflare or bot protection?

Yes. StackOptic uses a real browser engine that loads pages exactly like a human visitor — executing JavaScript, rendering CSS, and handling redirects. This allows it to bypass Cloudflare, LiteSpeed, Sucuri, and other bot protection systems where traditional crawlers and HTTP-only tools fail.

What do I get on the free plan?

The free plan includes 5 analyses per day with access to all 18 modules, full scores, technology detection, and security grades. Every report is permanently accessible via a unique shareable URL — no login required to view. No credit card needed. AI-powered insights, re-analysis, PDF/JSON export, and comparison features are available on Pro ($24/mo) and Agency ($99/mo) plans.

What is AI & LLM readiness analysis?

This module evaluates how visible and citable your website is to AI search engines like ChatGPT, Perplexity, Google AI Overviews, and Claude. It audits access permissions for 8 major AI bots, validates llms.txt and llms-full.txt files, scores citation-ready content structure, and analyzes structured data (JSON-LD) for GEO readiness — helping you rank in the next generation of search.

How long does an analysis take?

Most analyses complete in under 10 seconds. StackOptic runs all 18 modules in parallel using a real browser session, so you get technology detection, security audit, performance metrics, SEO analysis, and AI readiness scoring simultaneously.

How accurate are the results?

Detection is based on real browser execution — DOM inspection, JavaScript runtime analysis, HTTP headers, and DNS records. With 7,000+ technology signatures and Lighthouse-calibrated performance scoring, StackOptic achieves high accuracy for mainstream technologies.

What security checks are performed?

The security module evaluates SSL/TLS certificates, 12+ HTTP security headers (HSTS, CSP, X-Frame-Options, Permissions-Policy, Referrer-Policy), HTTPS enforcement, and email authentication (SPF, DKIM, DMARC). Each site receives a letter grade from A+ to F with specific remediation steps.

Do you store the websites I analyze?

StackOptic only stores publicly available information that any visitor to a website would see — HTML content, HTTP headers, DNS records, and screenshots. We do not access private data, log in to websites, or perform any intrusive testing.

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kahoot.com

https://kahoot.com· First analyzed 15 Feb 2026· Updated 15 Feb 2026

Export

kahoot.com

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

13.33.235.114

Server Location

🇺🇸 New York, United States

ASN

AS16509

Organization

AWS CloudFront (GLOBAL)

Server

Nginx

CDN

CloudFront

Nameservers

ns-452.awsdns-56.com.ns-523.awsdns-01.net.ns-1127.awsdns-12.org.ns-2025.awsdns-61.co.uk.

Performance

Page Speed

4.6 MB

115 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

kahoot2017v1

by Andy Kleeman, Agnete Pedersen, Nathan Davies, Leon Tyler!

View Theme

Technology Stack

10 Technologies Detected

Plugins

Translations Plugin Pdf Quote Stop User Enumeration

Frameworks

Libraries

CSS Frameworks

Analytics

Tag Managers

Web Servers

SEO Analysis

A+100/100

kahoot.comkahoot.com

Kahoot! | Learning games | Make learning awesome!

Kahoot! is a game-based learning platform that brings engagement and fun to 1+ billion players every year at school, at work, and at home.

Title Length49 chars

Recommended: 50-60 chars

Description Length138 chars

Recommended: 120-160 chars

Sponsored

A+

Security Score

91%Excellent

Static / Informational

HTTPS

No WAF

227d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

01.09.2025

Valid Until

30.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.kahoot.comkahoot.com

SHA-256 Fingerprint

5B:6A:E7:D1:7C:A4:C8:07:DC:E1:8F:05:2F:86:C5:24:9E:A8:31:3D...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

500

cache-control

🟡 600s(max-age=600, must-revalidate)

content-encoding

⚡ Brotli(br)

content-security-policy

frame-ancestors 'self'

content-type

text/html; charset=UTF-8

date

Sun, 15 Feb 2026 06:02:11 GMT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (5)

aspmx3.googlemail.com

alt2.aspmx.l.google.com

aspmx.l.google.com

aspmx2.googlemail.com

+1 more

Domain Information

kahoot.com

Domain Age

27y 5m

Created

01.09.1998

Expires

31.08.2026

Last Updated

25.08.2025

Registrar

EuroDNS S.A.

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

Typography & Readability

Montserrat

58/100

Readability

/30

12/40

12px · LH 1.25

Hierarchy

/20

25/25

4.33x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Montserrat

Sans52px

Body Font

Montserrat

Sans12px

Contrast Ratio

Reading Comfort

~42 CPL

Needs attention

52px

32px

12px

❌ Critical: 12px body text is too small. Increase to at least 14px.

✅ Strong hierarchy: Headlines are 4.3x larger than body text.

✅ Good performance: Using 1 font families keeps load times fast.

✅ Consistent design: Single font family with weight variations is a modern best practice.

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

✅ Protected text on images: Using gradient for readability.

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

18 Resources

Scripts

Styles

Async

Defer

Top Script Sources

kahoot.com(10)js.recurly.com(1)local(1)cdn-ukwest.onetrust.com(1)googletagmanager.com(1)

Website Identity

kahoot.com

27 years old

EuroDNS S.A.📧 Google Workspace

Social Profiles

Facebook X (Twitter)Instagram LinkedIn TikTok

Sponsored

Last analyzed: 15 Feb 2026 at 06:10

Historical Analysis & Change Tracking