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.

Back to Search

websummit.com

https://websummit.com· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

websummit.com

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

172.66.173.60

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

gina.ns.cloudflare.com.brad.ns.cloudflare.com.

Performance

Page Speed

16.7 MB

132 requests

Image Optimization

Lazy LoadWebPAVIFResponsiveimgix

0–49

50–89

90–100

Architecture Stack

Hybrid

⚡ SSG

Frontend

Framework

Next.js

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

11 Technologies Detected

Fonts

Google Fonts Adobe Fonts (Typekit)Adobe Fonts

Analytics

Meta Frameworks

CSS Frameworks

Icon Libraries

Tag Managers

CDN

Security

SEO Analysis

C64/100

websummit.comwebsummit.com

Web Summit - The best tech conference in Europe | November 9-12, 2026

Your ticket to Web Summit grants you access to 20 content tracks, talks, masterclasses, and exclusive perks. Join our tech industry network.

Title Length69 chars

Recommended: 50-60 chars

Description Length140 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (77/90)

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

4 rules

Sitemap reference found

Sponsored

Security Score

51%Poor

Interactive

HTTPS

WAF

35d

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

27.12.2025

Valid Until

27.03.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

websummit.com*.websummit.com

SHA-256 Fingerprint

ED:6A:7A:57:D9:B9:A2:EF:82:8F:D3:95:C0:81:7E:BE:99:C3:B2:65...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

106

alt-svc

h3=":443"; ma=86400

cache-control

⚪ Custom(s-maxage=600, stale-while-revalidate)

cf-cache-status

HIT

cf-placement

local-FRA

cf-ray🇩🇪 Frankfurt

9d079184ee75d362-FRA

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

alt3.aspmx.l.google.com

alt4.aspmx.l.google.com

alt1.aspmx.l.google.com

aspmx.l.google.com

+1 more

Domain Information

websummit.com

Domain Age

24y 3m

Created

19.11.2001

Expires

19.11.2026

Last Updated

23.11.2025

Registrar

1API GmbH

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Data Protection Officer mentioned

Typography & Readability

Verdana + serif

43/100

Readability

/30

32/40

16px · LH 1.30

Hierarchy

/20

8/25

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Verdana

Sans

Body Font

serif

Serif16px

Contrast Ratio

Reading Comfort

~32 CPL

Needs attention

40px

48px

16px

Minor Third

Scale

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

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

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

⚠️ Risky: Text appears on background images without overlay protection.

⚠️ Cramped layout: 10 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

GGoogle Fonts AAdobe Fonts

Business & Marketing Stack

6 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

HotjarMid-Market

Matomo (Piwik)Mid-Market

KissmetricsMid-Market

Google AnalyticsFree

User behavior and product analytics

A/B Testing & Optimization

ConvertMid-Market

Experimentation and conversion optimization

Sponsored

Scripts & Styles

25 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(19)kit.fontawesome.com(1)

Website Identity

websummit.com

24 years old

1API GmbH📧 Google Workspace

Social Profiles

Facebook X (Twitter)Instagram LinkedIn

Sponsored

Last analyzed: 19 Feb 2026 at 17:43

Historical Analysis & Change Tracking