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

nalog.gov.ru

https://nalog.gov.ru· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

nalog.gov.ru

Sponsored

Hosting Provider

Ngenix

IP Address

37.220.164.100

Server Location

🇷🇺 Moscow, Russia

ASN

AS205312

Organization

Ngenix

Server

Nginx

Nameservers

ns4.nalog.ru.ns3.nalog.ru.

Performance

Page Speed

610 KB

103 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

jQuery

Styling

Bootstrap

Infrastructure

Hosting

Ngenix

Technology Stack

6 Technologies Detected

Libraries

CSS Frameworks

UI Components

Web Servers

SEO Analysis

F35/100

nalog.gov.runalog.gov.ru

Федеральная налоговая служба

Title Length28 chars

Recommended: 50-60 chars

Description Length28 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

35 rules

Sitemap reference found

Sponsored

Security Score

56%Poor

Interactive

HTTPS

No WAF

68d

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

29.01.2026

Valid Until

29.04.2026

Subject Alternative Names (4)

edo.nalog.rueng.nalog.rus19269.cdn.ngenix.netwww.nalog.gov.ru

SHA-256 Fingerprint

E9:FD:87:EB:44:A5:C1:B0:00:8F:78:02:5D:1D:48:4D:19:7E:60:0E...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟡 1800s(max-age=1800)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Fri, 20 Feb 2026 04:13:37 GMT

expires

Fri, 20 Feb 2026 04:41:45 GMT

server

nginx

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

eups.nalog.ru

Domain Information

nalog.gov.ru

DNSSEC

Not Enabled

Typography & Readability

Conv_PFDINTEXTCONDPRO-MEDIUM + Open Sans

51/100

Readability

/30

20/40

11px · LH 1.40

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Conv_PFDINTEXTCONDPRO-MEDIUM

Body Font

Open Sans

Sans11px

Contrast Ratio

Reading Comfort

Mixed Pairing

left aligned

11px

❌ Critical: 11px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

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

✅ 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

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

data.nalog.ru(17)mc.yandex.ru(1)stat.sputnik.ru(1)local(1)

Website Identity

Sponsored

Last analyzed: 20 Feb 2026 at 04:13

Historical Analysis & Change Tracking