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

iz.ru

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

Export

iz.ru

Mobile

Sponsored

Hosting Provider

Ddos-guard LTD

IP Address

185.178.208.4

Server Location

🇷🇺 Rostov-on-Don, Russia

ASN

AS57724

Organization

Ddos-guard LTD

Server

ddos-guard

Nameservers

ns3.ren-tv.com.ns1.ren-tv.com.ns5.ren-tv.com.ns6.ren-tv.com.+2 more

Performance

Page Speed

179 KB

7 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Ddos-guard LTD

Technology Stack

2 Technologies Detected

CSS Frameworks

Tailwind CSS

Fonts

Google Fonts

SEO Analysis

D52/100

iz.ruiz.ru

Проверка браузера перед переходом на сайт

No description available for this page.

Title Length41 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

• Missing meta description - important for click-through rates

5 issues found

Upgrade to view details

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

162d

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

Valid From

23.06.2025

Valid Until

25.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.iz.ruiz.ru

SHA-256 Fingerprint

C0:5C:36:39:B1:A0:D8:7A:5E:76:75:29:72:13:03:72:B9:51:99:EE...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache, no-store, must-revalidate)

content-length

49562

content-type

text/html; charset=UTF-8

date

Fri, 13 Feb 2026 04:42:09 GMT

server

ddos-guard

set-cookie

__ddg8_

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

mx.ren-tv.com

Domain Information

iz.ru

Domain Age

25y 11m

Created

15.03.2000

Expires

31.03.2026

Registrar

RU-CENTER-RU

DNSSEC

Not Enabled

Typography & Readability

Fira Sans

73/100

Readability

/30

32/40

24px · LH 1.21

Hierarchy

/20

15/25

1.17x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Fira Sans

Sans28px

Body Font

Fira Sans

Sans24px

Contrast Ratio

Reading Comfort

~38 CPL

Needs attention

28px

20px

24px

✅ Excellent readability: 24px body text is ideal for all devices.

⚠️ Weak hierarchy: Headlines should be at least 2x body size for clear visual structure.

✅ 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.

GGoogle Fonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

3 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(1)check.ddos-guard.net(1)

Website Identity

X (Twitter)YouTube Telegram

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Last analyzed: 13 Feb 2026 at 04:42

Historical Analysis & Change Tracking