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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sostav.ru

https://sostav.ru· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

sostav.ru

Sponsored

Hosting Provider

Storm Systems LLC

IP Address

185.71.67.130

Server Location

🇷🇺 Moscow, Russia

ASN

AS43298

Organization

Storm Systems LLC

Server

Nameservers

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

Performance

Page Speed

1.5 MB

139 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Storm Systems LLC

Detected API Sources

https://vk.com/js/api/openapi....

Technology Stack

4 Technologies Detected

Libraries

Other

UI Components

CSS Frameworks

SEO Analysis

C67/100

sostav.rusostav.ru

Sostav.ru - новости рекламы и маркетинга

Портал о рекламе, маркетинге, бизнесе, креативе и PR. Фестивали рекламы, состав рекламного рынка, рекламные блоги, энциклопедия рекламы, рекламный форум. Нов...

Description truncated.

Title Length40 chars

Recommended: 50-60 chars

Description Length183 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (16/18)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

49,996 URLs

robots.txt

112 rules

Sitemap reference found

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

300d

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

14.11.2025

Valid Until

16.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.sostav.rusostav.ru

SHA-256 Fingerprint

DD:50:D8:77:91:9B:39:61:37:57:56:51:3A:12:82:F7:7D:AE:24:94...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Thu, 19 Feb 2026 17:41:29 GMT

server

set-cookie

PHPSESSID

Good Warning Issue

Email Infrastructure

Yandex Mail

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

mx.yandex.ru

Domain Information

sostav.ru

Domain Age

25y 10m

Created

17.04.2000

Expires

30.04.2026

Registrar

RU-CENTER-RU

DNSSEC

Not Enabled

Typography & Readability

PT Sans

53/100

Readability

/30

24/40

15px · LH 1.39

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

PT Sans

Sans

Body Font

PT Sans

Sans15px

Contrast Ratio

Reading Comfort

~73 CPL

Optimal (45–75)

27px

21px

15px

⚠️ Small text: 15px may be hard to read on mobile. Consider 16px+.

✅ 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.

✅ Protected text on images: Using gradient for readability.

✅ Optimal line length: ~73 characters per line is comfortable to read.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

28 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(11)mc.yandex.ru(2)cdn.jsdelivr.net(2)top-fwz1.mail.ru(1)yandex.ru(1)

Website Identity

X (Twitter)Telegram

Sponsored

Last analyzed: 19 Feb 2026 at 17:41

Historical Analysis & Change Tracking