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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yandex.ru

https://yandex.ru· First analyzed 10 Feb 2026· Updated 10 Feb 2026

Export

yandex.ru

Mobile

Sponsored

Hosting Provider

Yandex LLC

IP Address

77.88.44.55

Server Location

🇷🇺 Moscow, Russia

ASN

AS13238

Organization

Yandex LLC

Nameservers

ns2.yandex.ru.ns1.yandex.ru.

Performance

Page Speed

448 KB

82 requests

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Yandex LLC

Detected API Sources

/api/v4/launcher/stats/pixels?...

Technology Stack

3 Technologies Detected

Meta Frameworks

Astro

CSS Frameworks

Tailwind CSS

Customer Support

Zendesk

SEO Analysis

D50/100

yandex.ruyandex.ru

Дзен — главная новостная информационная платформа, которая помогает...

Дзен объединяет всё самое важное. Национальная, региональная и городская повестка, актуальные новости ведущих СМИ и нишевых авторов — всё собрано в единой ле...

Title truncated. Description truncated.

Title Length116 chars

Recommended: 50-60 chars

Description Length161 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (7/7)

5 issues found

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Security Score

71%Good

Interactive

HTTPS

No WAF

144d

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control

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

content-length

2430

content-security-policy

default-src 'none'; frame-ancestors https://*.dzen.ru https:...

content-type

text/html; charset=utf-8

date

Tue, 10 Feb 2026 21:06:07 GMT

etag

W/"97e-KcoZtgk1U57qudCqVc+kGXFrFmY"

Good Warning Issue

Typography & Readability

-apple-system

63/100

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

-apple-system

Sans

Body Font

-apple-system

Sans16px

Contrast Ratio

Reading Comfort

~65 CPL

Optimal (45–75)

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: ~65 characters per line is comfortable to read.

⚠️ Cramped layout: 16 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

17 Resources

Scripts

Styles

Async

Defer

Top Script Sources

static.dzeninfra.ru(9)top-fwz1.mail.ru(2)ad.mail.ru(2)mc.yandex.ru(1)yastatic.net(1)

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Last analyzed: 10 Feb 2026 at 21:06

Historical Analysis & Change Tracking