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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rospotrebnadzor.ru

https://rospotrebnadzor.ru· First analyzed 14 Feb 2026· Updated 14 Feb 2026

Export

rospotrebnadzor.ru

Mobile

Sponsored

Hosting Provider

Kaspersky Lab AO

IP Address

82.202.190.187

Server Location

🇷🇺 Moscow, Russia

ASN

AS209030

Organization

Kaspersky Lab AO

Server

Nginx

Nameservers

ns1.rsnx.ru.ns2.rsnx.ru.

Performance

Page Speed

1007 KB

61 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Kaspersky Lab AO

Technology Stack

3 Technologies Detected

Libraries

jQueryv3.6.0

CSS Frameworks

Tailwind CSS

Web Servers

Nginx

SEO Analysis

F27/100

rospotrebnadzor.rurospotrebnadzor.ru

Роспотребнадзор

Федеральная служба по надзору в сфере защиты прав потребителей и благополучия человека

Title Length15 chars

Recommended: 50-60 chars

Description Length86 chars

Recommended: 120-160 chars

Issues (3)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (26/31)
• Missing viewport meta tag - page may not be mobile-friendly

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

46 URLs

robots.txt

4 rules

Sitemap reference found

Sponsored

Security Score

56%Poor

Interactive

HTTPS

No WAF

113d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

07.05.2025

Valid Until

08.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.rospotrebnadzor.rurospotrebnadzor.ru

SHA-256 Fingerprint

58:27:99:6C:40:C3:EC:50:09:83:66:B6:BE:CD:69:62:EC:83:4C:B5...

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)

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=windows-1251

date

Sat, 14 Feb 2026 14:20:10 GMT

expires

Thu, 19 Nov 1981 08:52:00 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

smtp.sup.gsen.ru

Domain Information

rospotrebnadzor.ru

Domain Age

20y 10m

Created

10.04.2005

Expires

10.04.2026

Registrar

RU-CENTER-RU

DNSSEC

Not Enabled

Typography & Readability

arial

42/100

Readability

/30

24/40

14px · LH 1.30

Hierarchy

/20

8/25

WCAG

/25

5/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

arial

Sans

Body Font

arial

Sans14px

Contrast Ratio

Reading Comfort

~34 CPL

Needs attention

14px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

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

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

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

⚠️ Cramped layout: 29 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

19 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(14)mc.yandex.ru(1)stat.sputnik.ru(1)bitrix.info(1)

Website Identity

Sponsored

Last analyzed: 14 Feb 2026 at 14:20

Historical Analysis & Change Tracking