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.

Back to Search

clck.ru

https://clck.ru· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

clck.ru

Mobile

Sponsored

Hosting Provider

Yandex LLC

IP Address

213.180.204.221

Server Location

🇷🇺 Moscow, Russia

ASN

AS13238

Organization

Yandex LLC

Nameservers

ns3.yandex.ru.ns4.yandex.ru.

Performance

Page Speed

373 KB

14 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Yandex LLC

Progressive Web App

Web Manifest

Technology Stack

1 Technologies Detected

CSS Frameworks

Tailwind CSS

SEO Analysis

D41/100

clck.ruclck.ru

Яндекс Кликер — Сокращение ссылок

Простой способ сокращать ссылки и делиться ими

Title Length33 chars

Recommended: 50-60 chars

Description Length46 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (1/1)

6 issues found

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Crawlability

Sitemap

robots.txt

3 rules

Sponsored

Security Score

56%Poor

Interactive

HTTPS

No WAF

78d

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/1.1

Valid From

31.10.2025

Valid Until

01.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (4)

clck.ruclck.lywww.clck.lywww.clck.ru

SHA-256 Fingerprint

79:46:85:99:01:F9:BE:86:6E:B9:89:6F:A2:B0:99:68:89:12:B8:07...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

accept-ch

Sec-CH-UA-Bitness, Sec-CH-UA-Arch, Sec-CH-UA-Full-Version, S...

access-control-allow-origin

content-length

6656

content-type

text/html; charset=utf-8

date

Thu, 12 Feb 2026 17:19:51 GMT

etag

W/"1a00-veCGIX7v+8xU2msei7E6AuauTCk"

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mx1.masterhost.ru

Domain Information

clck.ru

Domain Age

18y 6m

Created

13.08.2007

Expires

13.08.2026

Registrar

RU-CENTER-RU

DNSSEC

Not Enabled

Typography & Readability

arial

79/100

Readability

/30

30/40

16px · LH --

Hierarchy

/20

21/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

arial

Sans32px

Body Font

arial

Sans16px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

32px

✅ 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.

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Scripts & Styles

7 Resources

Scripts

Styles

Async

Defer

Top Script Sources

yastatic.net(4)mc.yandex.ru(1)

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Last analyzed: 12 Feb 2026 at 17:19

Historical Analysis & Change Tracking