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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tvzvezda.ru

https://tvzvezda.ru· First analyzed 18 Feb 2026· Updated 18 Feb 2026

Export

tvzvezda.ru

Sponsored

Hosting Provider

Ddos-guard LTD

IP Address

95.129.232.3

Server Location

🇷🇺 Rostov-on-Don, Russia

ASN

AS57724

Organization

Ddos-guard LTD

Server

ddos-guard

Nameservers

ns4-cloud.nic.ru.ns8-cloud.nic.ru.ns1.zvezdamedia.ru.ns4-l2.nic.ru.+1 more

Performance

Page Speed

1 MB

235 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Ghost

Technology Stack

4 Technologies Detected

Frameworks

CSS Frameworks

Icon Libraries

Fonts

SEO Analysis

F35/100

tvzvezda.rutvzvezda.ru

Телеканал «Звезда»

Официальный сайт Телеканала «Звезда». Прямой эфир, программа передач, новости, комментарии экспертов. Уникальные съемки военной техники, фильмы об армии, ист...

Description truncated.

Title Length18 chars

Recommended: 50-60 chars

Description Length234 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (213/217)

7 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

23 rules

Sponsored

Security Score

41%Poor

Interactive

HTTPS

No WAF

122d

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/2

Valid From

19.05.2025

Valid Until

20.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.tvzvezda.rutvzvezda.ru

SHA-256 Fingerprint

85:40:74:3B:64:53:52:C5:9E:13:A9:A5:77:29:7A:3F:9D:51:0F:01...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

server

ddos-guard

set-cookie

__ddg8_

content-security-policy

upgrade-insecure-requests;

date

Wed, 18 Feb 2026 05:28:09 GMT

content-type

text/html; charset=utf-8

surrogate-control

no-store

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

jupiter.zvezdamedia.ru

leda.zvezdamedia.ru

Domain Information

tvzvezda.ru

Domain Age

21 years

Created

03.02.2005

Expires

03.02.2027

Registrar

RU-CENTER-RU

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

Typography & Readability

Rubik + sans-serif

68/100

Readability

/30

32/40

16px · LH 1.25

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Rubik

Body Font

sans-serif

Sans16px

Contrast Ratio

Reading Comfort

Mixed Pairing

left aligned

16px

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

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

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

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

15 Resources

Scripts

Styles

Async

Defer

Top Script Sources

st.top100.ru(2)tns-counter.ru(2)top-fwz1.mail.ru(2)mc.yandex.ru(1)yandex.ru(1)

Website Identity

Sponsored

Last analyzed: 18 Feb 2026 at 05:28

Historical Analysis & Change Tracking