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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rutube.ru

https://rutube.ru· First analyzed 11 Feb 2026· Updated 11 Feb 2026

Export

rutube.ru

Mobile

Sponsored

Hosting Provider

Servicepipe LLC

IP Address

109.238.90.239

Server Location

🇷🇺 Moscow, Russia

ASN

AS201706

Organization

Servicepipe LLC

Server

QRATOR

Nameservers

ns4-cloud.nic.ru.ns8-cloud.nic.ru.ns3-l2.nic.ru.ns4-l2.nic.ru.+1 more

Performance

Page Speed

317 KB

250 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Ghost

Technology Stack

1 Technologies Detected

CSS Frameworks

Tailwind CSS

SEO Analysis

B76/100

rutube.rurutube.ru

RUTUBE - смотрите видео онлайн, бесплатно.

RUTUBE — ведущий российский видеопортал, предлагающий к просмотру тв онлайн, кинофильмы, сериалы, мультфильмы и пользовательское видео. Смотри. Создавай. Заг...

Description truncated.

Title Length42 chars

Recommended: 50-60 chars

Description Length163 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

3 issues found

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Sponsored

Security Score

31%Critical

Interactive

HTTPS

No WAF

308d

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-credentials

true

access-control-allow-headers

Accept,Authorization,Cache-Control,Content-Type,DNT,If-Modif...

access-control-allow-methods

cache-control

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

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=utf-8

Good Warning Issue

Typography & Readability

Arial + sans-serif

51/100

Readability

/30

20/40

12px · 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

sans-serif

Sans12px

Contrast Ratio

Reading Comfort

Dual Sans-Serif

left aligned

36px

12px

❌ Critical: 12px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

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

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

⚠️ Cramped layout: 15 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

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Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

static.rtbcdn.ru(13)cdn.uxfeedback.ru(1)mc.yandex.ru(1)yandex.ru(1)yastatic.net(1)

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Last analyzed: 11 Feb 2026 at 07:18

Historical Analysis & Change Tracking