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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zoon.ru

https://zoon.ru· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

zoon.ru

Sponsored

Hosting Provider

JSC Selectel

IP Address

31.184.217.177

Server Location

🇷🇺 St Petersburg, Russia

ASN

AS49505

Server

Nginx

CDN

Cloudflare

WAF

Cloudflare

Nameservers

elliot.ns.cloudflare.com.alice.ns.cloudflare.com.

Performance

Page Speed

502 KB

46 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

JSC Selectel

CDN

Cloudflare

Technology Stack

9 Technologies Detected

Libraries

Other

Frameworks

Other

UI Components

CSS Frameworks

Web Servers

SEO Analysis

D52/100

zoon.ruzoon.ru

Zoon.ru - удобный выбор ресторанов, медицинских центров, спа-салоно...

Выбор лучших услуг в Москве: рестораны, салоны красоты, медицина и многое другое на Zoon.ru. Фотографии, отзывы, акции, скидки, фильтры для поиска.

Title truncated.

Title Length107 chars

Recommended: 50-60 chars

Description Length147 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (105/108)

4 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

130 rules

Sitemap reference found

Sponsored

Security Score

46%Poor

Interactive

HTTPS

No WAF

40d

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

01.01.2026

Valid Until

01.04.2026

Subject Alternative Names (4)

*.analytics-service.zoon.ru*.analytics.zoon.ru*.zoon.ruzoon.ru

SHA-256 Fingerprint

0B:DB:0D:CB:D7:8E:1A:20:32:71:A1:18:68:A6:A6:38:E1:25:AF:4E...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin

cache-control

🔴 No Cache(max-age=0, must-revalidate, proxy-revalidate, private, no-ca...)

content-encoding

zstd

content-security-policy-report-only

default-src 'unsafe-inline' 'self' *.zoon.by zoon.by *.zoon....

content-type

text/html; charset=utf-8

date

Thu, 19 Feb 2026 16:21:03 GMT

Good Warning Issue

Email Infrastructure

Zoho Mail

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (3)

mx3.zoho.com

mx2.zoho.com

mx.zoho.com

Domain Information

zoon.ru

Domain Age

20y 6m

Created

23.08.2005

Expires

23.08.2026

Registrar

RU-CENTER-RU

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Data Protection Officer mentioned

Typography & Readability

Roboto

78/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Roboto

Body Font

Roboto

Sans16px

Contrast Ratio

Reading Comfort

~50 CPL

Optimal (45–75)

16px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

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

✅ Optimal line length: ~50 characters per line is comfortable to read.

⚠️ Cramped layout: 21 elements lack adequate spacing.

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

13 Resources

Scripts

Styles

Async

Defer

Top Script Sources

zoon.ru(9)mc.yandex.ru(1)

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Last analyzed: 19 Feb 2026 at 16:21

Historical Analysis & Change Tracking