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

fgv.br

https://fgv.br· First analyzed 15 Feb 2026· Updated 15 Feb 2026

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fgv.br

Mobile

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Hosting Provider

Fundacao Getulio Vargas (RJ - Praia de Botafogo)

IP Address

200.255.81.98

Server Location

🇧🇷 Rio de Janeiro, Brazil

ASN

AS4230

Organization

Fundacao Getulio Vargas (RJ - Praia de Botafogo)

Server

Apache

Nameservers

dns9jlvpr0003.fgv.br.dnsdc1vpr0001.fgv.br.

Performance

Page Speed

3.4 MB

89 requests

Image Optimization

Lazy LoadWebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

jQuery

Styling

Tailwind CSS

CMS

Drupal

Infrastructure

Hosting

Fundacao Getulio Vargas (RJ - Praia de Botafogo)

Technology Stack

12 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

Advertising

Libraries

Other

CSS Frameworks

Icon Libraries

Tag Managers

Web Servers

SEO Analysis

A82/100

fgv.brfgv.br

Portal FGV - Fundação Getulio Vargas

A FGV - Fundação Getulio Vargas busca estimular o desenvolvimento socioeconômico do Brasil por meio da excelência no ensino, pesquisa, assessoria técnica e f...

Description truncated.

Title Length36 chars

Recommended: 50-60 chars

Description Length333 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

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Crawlability

Sitemap

robots.txt

53 rules

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Security Score

76%Good

Interactive

HTTPS

No WAF

71d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

28.04.2025

Valid Until

27.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.fgv.brfgv.br

SHA-256 Fingerprint

2F:2F:E8:0F:38:41:CB:F4:25:E5:7E:4A:C9:28:56:F1:C9:AB:09:4E...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟡 1 Hours(max-age=3600, public)

connection

Upgrade, Keep-Alive

content-encoding

📦 Gzip(gzip)

content-length

21498

content-security-policy

frame-ancestors http://*.fgv.br https://*.fgv.br; report-uri...

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

fgv-br.mail.protection.outlook.com

Domain Information

fgv.br

Domain Age

29y 2m

Created

16.12.1996

Last Updated

21.11.2020

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

Typography & Readability

Gotham-Book

34/100

Readability

/30

10/40

13px · LH --

Hierarchy

/20

21/25

3.23x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Gotham-Book

Sans42px

Body Font

Gotham-Book

Sans13px

Contrast Ratio

Reading Comfort

~50 CPL

Optimal (45–75)

42px

34px

28px

24px

13px

❌ Critical: 13px body text is too small. Increase to at least 14px.

✅ Strong hierarchy: Headlines are 3.2x 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.

⚠️ Risky: Text appears on background images without overlay protection.

Buy on MyFonts

Business & Marketing Stack

6 Tools Detected

Enterprise

Behavior Analytics

Microsoft ClarityFree

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

LinkedIn AdsEnterprise

TaboolaMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(5)static.addtoany.com(3)youtube.com(2)googletagmanager.com(2)connect.facebook.net(2)

Website Identity

Facebook X (Twitter)Instagram TikTok Threads Bluesky

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Last analyzed: 15 Feb 2026 at 09:20

Historical Analysis & Change Tracking