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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meduza.io

https://meduza.io· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

meduza.io

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.18.1.79

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

tom.ns.cloudflare.com.maria.ns.cloudflare.com.

Performance

Page Speed

2.6 MB

57 requests

Image Optimization

WebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

BigCommerce

Progressive Web App

PWA ReadyWeb ManifestService WorkerApple Touch IconTheme Color

Technology Stack

5 Technologies Detected

Analytics

Meta Frameworks

CSS Frameworks

CDN

SEO Analysis

C67/100

meduza.iomeduza.io

Meduza — Новости

Новости, репортажи, расследования, разборы, аналитика, фотографии, подкасты, фильмы, игры и книги. Это «Медуза», крупнейшее независимое издание на русском языке

Title Length16 chars

Recommended: 50-60 chars

Description Length160 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (20/22)

3 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

4 rules

Sponsored

Security Score

51%Poor

Interactive

HTTPS

WAF

80d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

06.02.2026

Valid Until

07.05.2026

Subject Alternative Names (3)

*.meduza.io*.staging.meduza.iomeduza.io

SHA-256 Fingerprint

60:2A:EA:5F:B9:AA:F5:47:15:F5:D6:E0:B9:5A:32:37:75:5D:71:A6...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

date

Mon, 16 Feb 2026 05:12:06 GMT

content-type

text/html; charset=utf-8

cache-control

🟡 30s(public, max-age=30, s-maxage=21600)

x-cg-cache-status

DYNAMIC

set-cookie

__cf_bm

strict-transport-security

max-age=31536000; includeSubDomains; preload

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

alt3.aspmx.l.google.com

alt2.aspmx.l.google.com

alt4.aspmx.l.google.com

alt1.aspmx.l.google.com

+1 more

Domain Information

meduza.io

Domain Age

11y 7m

Created

21.07.2014

Expires

21.07.2026

Last Updated

26.06.2025

Registrar

NameCheap, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

PF Regal Text Pro + Arial

63/100

Readability

/30

32/40

14px · LH 1.43

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

PF Regal Text Pro

Sans

Body Font

Arial

Sans14px

Contrast Ratio

Reading Comfort

~46 CPL

Optimal (45–75)

37px

12px

14px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.43 ratio ensures comfortable reading.

✅ Good performance: Using 2 font families keeps load times fast.

✅ Protected text on images: Using gradient for readability.

✅ Optimal line length: ~46 characters per line is comfortable to read.

⚠️ Cramped layout: 40 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

19 Resources

Scripts

Styles

Async

Defer

Top Script Sources

gstatic.com(6)local(6)cdnjs.cloudflare.com(1)googletagmanager.com(1)static.cloudflareinsights.com(1)

Website Identity

Facebook X (Twitter)Instagram YouTube Telegram

Sponsored

Last analyzed: 16 Feb 2026 at 05:13

Historical Analysis & Change Tracking