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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em.com.br

https://em.com.br· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

em.com.br

Sponsored

Hosting Provider

S/A ESTADO DE MINAS

IP Address

200.188.178.230

Server Location

🇧🇷 Funcionarios, Brazil

ASN

AS20044

Organization

S/A ESTADO DE MINAS

Server

AmazonS3

CDN

Varnish

Nameservers

ns-1453.awsdns-53.org.ns-1811.awsdns-34.co.uk.ns-293.awsdns-36.com.ns-618.awsdns-13.net.

Performance

Page Speed

595 KB

172 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

S/A ESTADO DE MINAS

CDN

Varnish

Technology Stack

14 Technologies Detected

Advertising

Google Ads Google AdSense Criteo Taboola

Analytics

Meta Frameworks

CSS Frameworks

Icon Libraries

Fonts

Tag Managers

CDN

Customer Support

SEO Analysis

B76/100

em.com.brem.com.br

Estado de Minas: notícias e análises de MG, Brasil e do mundo

Acompanhe as últimas notícias e fique bem informado sobre tudo o que acontece em Minas Gerais, Brasil e no mundo.

Title Length61 chars

Recommended: 50-60 chars

Description Length113 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

1,000 URLs

robots.txt

12 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

0%Critical

Critical / Transactional

No SSL

No WAF

nulld

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-headers

Origin, Accept, Content-Type, X-Requested-With, X-CSRF-Token

access-control-allow-methods

GET, OPTIONS

access-control-allow-origin

age

cache-control

🟡 120s(public, max-age=120, s-maxage=604802)

connection

keep-alive

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mx2.diariosassociados.com.br

mx1.diariosassociados.com.br

Domain Information

em.com.br

Domain Age

29y 6m

Created

12.08.1996

Expires

12.08.2029

Last Updated

17.07.2024

DNSSEC

Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner

Quantcast Choice

GDPR Indicators

Cookie consent banner detected

CMP: Quantcast Choice

Legitimate interest basis mentioned

Typography & Readability

Roboto + sans-serif

80/100

Readability

/30

32/40

16px · LH 1.31

Hierarchy

/20

25/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Roboto

Sans32px

Body Font

sans-serif

Sans16px

Contrast Ratio

Reading Comfort

~40 CPL

Needs attention

32px

34px

20px

24px

16px

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

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

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

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

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

⚠️ Cramped layout: 109 elements lack adequate spacing.

GGoogle Fonts

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

TaboolaMid-Market

Ad platforms and retargeting pixels

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

21 Resources

Scripts

Styles

Async

Defer

Top Script Sources

tag.navdmp.com(2)googletagmanager.com(2)launchpad.privacymanager.io(1)sdk.ocmthood.com(1)sb.scorecardresearch.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn TikTok

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Last analyzed: 17 Feb 2026 at 18:15

Historical Analysis & Change Tracking