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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sravni.ru

https://sravni.ru· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

sravni.ru

Mobile

Sponsored

Hosting Provider

Yandex.Cloud LLC

IP Address

51.250.118.217

Server Location

🇷🇺 Moscow, Russia

ASN

AS200350

Organization

Yandex.Cloud LLC

Server

ycalb

Nameservers

ns2.yandexcloud.net.ns1.yandexcloud.net.

Performance

Page Speed

157 KB

154 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Hybrid

🔀 Hybrid

Frontend

Framework

Next.js

Infrastructure

Hosting

Yandex.Cloud LLC

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

7 Technologies Detected

Meta Frameworks

Analytics

Other

CSS Frameworks

Tag Managers

SEO Analysis

C64/100

sravni.rusravni.ru

Сравни - подбор и сравнение вкладов, кредитов, кредитных карт, авто...

Расчет и сравнение вкладов, кредитов, ипотеки, кредитных карт. Калькуляторы страховок каско и ОСАГО. Рейтинги банков и страховых компаний, отзывы клиентов. О...

Title truncated. Description truncated.

Title Length133 chars

Recommended: 50-60 chars

Description Length196 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (113/174)

4 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

387 rules

Allows all crawlers

Sponsored

Security Score

36%Critical

Interactive

HTTPS

No WAF

316d

Certificate Details

Type

Organization Validated (OV)

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

01.12.2025

Valid Until

02.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (8)

www.sravni.ruowa.sravni.rumail.sravni.ruautodiscover.sravni.rufs.sravni.ru*.prod.sravni.ru*.sravni.rusravni.ru

SHA-256 Fingerprint

D9:B4:94:A1:5C:E8:3C:93:57:D8:A2:55:D9:DD:7B:4A:AF:B9:17:24...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(private, no-cache, no-store, max-age=0, must-revalidate)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Fri, 20 Feb 2026 00:00:54 GMT

etag

"15dul548mhyakrx"

image-version

9460c717

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

mbx02.sravni.ru

mbx01.sravni.ru

Domain Information

sravni.ru

Domain Age

24y 5m

Created

09.09.2001

Expires

10.09.2026

Registrar

RU-CENTER-RU

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

Times New Roman

83/100

Readability

/30

30/40

16px · LH --

Hierarchy

/20

25/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Times New Roman

Serif32px

Body Font

Times New Roman

Serif16px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

32px

19px

16px

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

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

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

✅ Consistent design: Single font family with weight variations is a modern best practice.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

s91588.cdn.ngenix.net(9)googletagmanager.com(4)top-fwz1.mail.ru(2)mc.yandex.ru(1)cdn.uxfeedback.ru(1)

Website Identity

Sponsored

Last analyzed: 20 Feb 2026 at 00:01

Historical Analysis & Change Tracking