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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phoca.cz

https://phoca.cz· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

phoca.cz

Mobile

Sponsored

Hosting Provider

Networking s.r.o.

IP Address

213.211.34.110

Server Location

🇨🇿 Brno, Czechia

ASN

AS12570

Organization

Networking s.r.o.

Server

Apache

Nameservers

ns1.videon-znojmo.cz.ns2.videon-znojmo.cz.

Performance

Page Speed

1.3 MB

77 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Joomla!

Technology Stack

13 Technologies Detected

Advertising

Google Ads Google AdSense Criteo Outbrain

Icon Libraries

Font Awesome Material Icons

Analytics

CSS Frameworks

Fonts

Payments

Web Servers

Languages

SEO Analysis

B72/100

phoca.czphoca.cz

Phoca

Phoca - Building Web Apps. Powerful extensions for Joomla CMS.

Title Length5 chars

Recommended: 50-60 chars

Description Length62 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

25 rules

Sponsored

Security Score

5%Critical

Critical / Transactional

HTTPS

No WAF

83d

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

07.02.2026

Valid Until

08.05.2026

Subject Alternative Names (2)

phoca.czwww.phoca.cz

SHA-256 Fingerprint

4B:A1:CC:D3:CA:DE:DF:84:C9:D8:48:90:09:FC:C4:B6:7B:3B:E6:24...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate, post-check=0, pre-check...)

content-type

text/html; charset=utf-8

date

Fri, 13 Feb 2026 11:49:55 GMT

expires

Wed, 17 Aug 2005 00:00:00 GMT

last-modified

Fri, 13 Feb 2026 11:49:55 GMT

pragma

no-cache

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mail.videon-znojmo.cz

Domain Information

phoca.cz

Domain Age

18y 6m

Created

08.08.2007

Expires

07.08.2026

Last Updated

27.07.2020

Registrar

REG-ZONER

DNSSEC

Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner

Quantcast Choice

GDPR Indicators

Cookie consent banner detected

CMP: Quantcast Choice

Legitimate interest basis mentioned

Typography & Readability

Mulish + Inter

76/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

18/25

3x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Mulish

Sans48px

Body Font

Inter

Sans16px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

48px

26px

28px

16px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

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

✅ Good performance: Using 2 font families keeps load times fast.

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

⚠️ Cramped layout: 18 elements lack adequate spacing.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Enterprise

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(16)cse.google.com(1)pagead2.googlesyndication.com(1)googletagmanager.com(1)google.com(1)

Website Identity

Facebook X (Twitter)YouTube GitHub Pinterest

Sponsored

Last analyzed: 13 Feb 2026 at 11:45

Historical Analysis & Change Tracking