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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gosuslugi.ru

https://gosuslugi.ru· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

gosuslugi.ru

Mobile

Sponsored

Hosting Provider

Rostelecom Nets

IP Address

213.59.254.7

Server Location

🇷🇺 St Petersburg, Russia

ASN

AS12389

Organization

Rostelecom Nets

Server

Nginx

Nameservers

ns8-l2.nic.ru.ns1.gosuslugi.ru.ns2.gosuslugi.ru.ns4-l2.nic.ru.

Performance

Page Speed

94 KB

210 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Ghost

Technology Stack

3 Technologies Detected

Frameworks

Angularv17.3.12

CSS Frameworks

Tailwind CSS

Web Servers

Nginx

SEO Analysis

D52/100

gosuslugi.rugosuslugi.ru

Портал государственных услуг Российской Федерации

Единый портал государственных услуг Российской Федерации. Здесь можно записаться к врачу, получить загранпаспорт, записать ребенка в детский сад, проверить и...

Description truncated.

Title Length49 chars

Recommended: 50-60 chars

Description Length201 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (37/48)

5 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

417 rules

Sitemap reference found

Sponsored

Security Score

36%Critical

Interactive

HTTPS

No WAF

302d

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

11.11.2025

Valid Until

12.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.gosuslugi.rugosuslugi.ru

SHA-256 Fingerprint

0E:05:92:F5:EF:99:07:CA:8F:D8:90:11:FB:0A:98:EC:79:FF:C5:DF...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🔴 No Cache(no-cache)

connection

keep-alive

content-length

9376

content-type

text/html

date

Fri, 13 Feb 2026 11:04:09 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

mx.gosuslugi.ru

mx68.gosuslugi.ru

Domain Information

gosuslugi.ru

Domain Age

17y 5m

Created

01.09.2008

Expires

01.09.2026

Registrar

RU-CENTER-RU

DNSSEC

Not Enabled

Typography & Readability

Arial

76/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Arial

Sans

Body Font

Arial

Sans16px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

32px

16px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

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

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

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

✅ Protected text on images: Using gradient for readability.

Buy on MyFonts

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

gu-st.ru(6)gosuslugi.ru(3)mc.yandex.ru(1)

Website Identity

Sponsored

Last analyzed: 13 Feb 2026 at 11:04

Historical Analysis & Change Tracking