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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elibrary.ru

https://elibrary.ru· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

elibrary.ru

Sponsored

Hosting Provider

RECONN network

IP Address

195.209.52.65

Server Location

🇷🇺 Moscow, Russia

ASN

AS12722

Organization

RECONN network

Server

Microsoft IIS

Nameservers

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

Performance

Page Speed

1.4 MB

33 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

RECONN network

Technology Stack

4 Technologies Detected

Libraries

UI Components

Web Servers

Frameworks

SEO Analysis

D58/100

elibrary.ruelibrary.ru

НАУЧНАЯ ЭЛЕКТРОННАЯ БИБЛИОТЕКА

Рефераты и полные тексты более 39 млн научных публикаций и патентов. Электронные версии научно-технических журналов в свободном доступе и по подписке

Title Length30 chars

Recommended: 50-60 chars

Description Length149 chars

Recommended: 120-160 chars

Issues (2)

• Many images missing alt text (87/87)
• Missing viewport meta tag - page may not be mobile-friendly

5 issues found

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Crawlability

Sitemap

Type: index

robots.txt

35 rules

Sitemap reference found

Sponsored

Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

194d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

29.07.2025

Valid Until

30.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.elibrary.ruelibrary.ru

SHA-256 Fingerprint

93:C4:30:D8:E8:D3:CC:80:37:CF:4B:F9:37:A9:B5:D0:BE:CE:5A:F3...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟣 Private(private)

content-length

62208

content-type

text/html; Charset=UTF-8

date

Mon, 16 Feb 2026 22:11:45 GMT

server

Microsoft-IIS/10.0

x-powered-by

ASP.NET

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

gate.elibrary.ru

Domain Information

elibrary.ru

Domain Age

26y 3m

Created

19.11.1999

Expires

30.11.2026

Registrar

RU-CENTER-RU

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Tahoma

45/100

Readability

/30

10/40

11px · LH --

Hierarchy

/20

15/25

1.12x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Tahoma

Sans12px

Body Font

Tahoma

Sans11px

Contrast Ratio

Reading Comfort

Single Font Family

center aligned

12px

Minor Second

Scale

❌ Critical: 11px body text is too small. Increase to at least 14px.

⚠️ Weak hierarchy: Headlines should be at least 2x body size for clear visual structure.

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

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

⚠️ Inconsistent alignment: Mix of left/center/right creates visual noise.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

8 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(5)mc.yandex.ru(1)

Website Identity

Sponsored

Last analyzed: 16 Feb 2026 at 22:11

Historical Analysis & Change Tracking