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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win-rar.com

https://win-rar.com· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

win-rar.com

Sponsored

Hosting Provider

OVHcloud

ovhcloud.com

IP Address

51.195.68.163

Server Location

🇩🇪 Limburg an der Lahn, Germany

ASN

AS16276

Organization

Canboy Burak

Server

Apache

Nameservers

ns2.win-rar.com.ns1.win-rar.com.ns3.win-rar.com.

Performance

Page Speed

61 KB

12 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

TYPO3

Technology Stack

3 Technologies Detected

Libraries

jQueryv3.7.1

CSS Frameworks

Tailwind CSS

Web Servers

Apache

SEO Analysis

A+91/100

win-rar.comwin-rar.com

WinRAR download free and support: WinRAR

WinRAR - the data compression, encryption and archiving tool for Windows that opens RAR and ZIP files. Compatible with many other file formats.

Title Length40 chars

Recommended: 50-60 chars

Description Length143 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

149 URLs

robots.txt

3 rules

Sitemap reference found

Sponsored

Security Score

81%Very Good

Interactive

HTTPS

No WAF

50d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp384r1) (384 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

11.01.2026

Valid Until

11.04.2026

Subject Alternative Names (4)

downloads.win-rar.comstats.win-rar.comwin-rar.comwww.win-rar.com

SHA-256 Fingerprint

33:29:38:FB:DE:CE:14:41:EE:CF:FC:CF:2D:36:26:03:FB:FB:71:18...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-length

8124

content-security-policy

frame-ancestors 'none';

content-type

text/html;charset=utf-8

date

Thu, 19 Feb 2026 22:30:30 GMT

referrer-policy

strict-origin-when-cross-origin

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

zimbra.win-rar.com

Domain Information

win-rar.com

Domain Age

24y 7m

Created

27.07.2001

Expires

27.07.2026

Last Updated

26.06.2025

Registrar

Gandi SAS

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Helvetica

58/100

Readability

/30

10/40

12px · LH --

Hierarchy

/20

25/25

2.33x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Helvetica

Sans28px

Body Font

Helvetica

Sans12px

Contrast Ratio

Reading Comfort

~47 CPL

Optimal (45–75)

28px

21px

12px

❌ Critical: 12px body text is too small. Increase to at least 14px.

✅ Strong hierarchy: Headlines are 2.3x 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.

✅ Optimal line length: ~47 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

4 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(3)

Website Identity

Facebook X (Twitter)

Sponsored

Last analyzed: 19 Feb 2026 at 22:30

Historical Analysis & Change Tracking