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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vz.ru

https://vz.ru· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

vz.ru

Sponsored

Hosting Provider

Selectel

IP Address

77.223.102.246

Server Location

🇷🇺 Moscow, Russia

ASN

AS50340

Server

Nginx

Nameservers

ns2.goodoo.ru.ns1.goodoo.ru.

Performance

Page Speed

1.2 MB

166 requests

Image Optimization

WebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Selectel

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

5 Technologies Detected

Analytics

Libraries

UI Components

Web Servers

SEO Analysis

D47/100

vz.ruvz.ru

«ВЗГЛЯД.РУ» - последние новости и аналитические материалы

Электронное периодическое издание Взгляд.ру. Специализируется на оперативных новостях, публикации актуальной информации и аналитических материалов о российск...

Description truncated.

Title Length57 chars

Recommended: 50-60 chars

Description Length317 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (66/84)

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

robots.txt

14 rules

Sitemap reference found

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

332d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

14.12.2025

Valid Until

15.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (5)

*.vz.ruautodiscover.vz.rumail.vz.ruowa.vz.ruvz.ru

SHA-256 Fingerprint

F4:C7:A1:77:1C:0F:26:3B:9A:44:4E:1F:CB:B8:2E:DE:EA:29:2C:9E...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache)

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Mon, 16 Feb 2026 21:30:06 GMT

expires

Mon, 16 Feb 2026 21:30:05 GMT

Good Warning Issue

Email Infrastructure

Yandex Mail

Score

SPF

DKIM

DMARC

MX Records (1)

mx.yandex.ru

Domain Information

vz.ru

Domain Age

25y 8m

Created

01.06.2000

Expires

31.05.2026

Registrar

RU-CENTER-RU

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

Typography & Readability

Times New Roman

63/100

Readability

/30

32/40

16px · LH 1.38

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Times New Roman

Serif

Body Font

Times New Roman

Serif16px

Contrast Ratio

Reading Comfort

~53 CPL

Optimal (45–75)

24px

19px

16px

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

✅ 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.

✅ Optimal line length: ~53 characters per line is comfortable to read.

⚠️ Cramped layout: 53 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

21 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(6)gstatic.com(2)top-fwz1.mail.ru(1)tns-counter.ru(1)abt.s3.yandex.net(1)

Website Identity

Sponsored

Last analyzed: 16 Feb 2026 at 21:30

Historical Analysis & Change Tracking