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

pr-cy.ru

https://pr-cy.ru· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

pr-cy.ru

Sponsored

Hosting Provider

JSC Selectel

IP Address

188.124.45.106

Server Location

🇷🇺 St Petersburg, Russia

ASN

AS49505

CDN

Cloudflare

WAF

Cloudflare

Nameservers

sid.ns.cloudflare.com.sharon.ns.cloudflare.com.

Performance

Page Speed

2.2 MB

60 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Ghost

Technology Stack

6 Technologies Detected

CSS Frameworks

Analytics

Tag Managers

Frameworks

CDN

SEO Analysis

B78/100

pr-cy.rupr-cy.ru

PR-CY 🔥 Анализ сайта: Сервис самостоятельного продвижения сайта - ...

PR-CY – сервис для продвижения своего сайта. Проверьте сайт на ошибки и получите рекомендации по улучшению Более 70 параметров проверки для вашего сайта.

Title truncated.

Title Length131 chars

Recommended: 50-60 chars

Description Length153 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (26/28)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

37 URLs

robots.txt

44 rules

Sitemap reference found

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

69d

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

30.01.2026

Valid Until

30.04.2026

Subject Alternative Names (6)

*.pr-cy.io*.pr-cy.org*.pr-cy.rupr-cy.iopr-cy.orgpr-cy.ru

SHA-256 Fingerprint

A5:8C:3B:8F:CF:F6:81:15:90:93:55:5C:F7:54:F0:C7:30:E3:06:12...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Fri, 20 Feb 2026 09:16:17 GMT

vary

Accept-Encoding, Origin

x-powered-by

Express

Good Warning Issue

Email Infrastructure

Yandex Mail

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

mx.yandex.net

Domain Information

pr-cy.ru

Domain Age

19y 5m

Created

17.09.2006

Expires

17.09.2026

Registrar

REGRU-RU

DNSSEC

Not Enabled

Typography & Readability

Helvetica Neue

95/100

Readability

/30

40/40

16px · LH 1.62

Hierarchy

/20

25/25

2.2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Helvetica Neue

Sans35px

Body Font

Helvetica Neue

Sans16px

Contrast Ratio

Reading Comfort

~43 CPL

Needs attention

35px

19px

16px

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

✅ Optimal line spacing: 1.62 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.2x larger than body text.

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

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

⚠️ Cramped layout: 7 elements lack adequate spacing.

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(17)cdn.jsdelivr.net(1)abt.s3.yandex.net(1)sst-gtm.hacklix.com(1)

Website Identity

Sponsored

Last analyzed: 20 Feb 2026 at 09:16

Historical Analysis & Change Tracking