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

rj.gov.br

https://rj.gov.br· First analyzed 14 Feb 2026· Updated 14 Feb 2026

Export

rj.gov.br

Mobile

Sponsored

Hosting Provider

PRODERJ - Centro de Tecnologia da Informação do RJ

IP Address

187.62.128.44

Server Location

🇧🇷 Rio de Janeiro, Brazil

ASN

AS28159

Organization

PRODERJ - Centro de Tecnologia da Informação do RJ

Server

Nginx

Nameservers

xexeu.proderj.rj.gov.br.condor.proderj.rj.gov.br.tachuri.proderj.rj.gov.br.uipia.proderj.rj.gov.br.

Performance

Page Speed

1.2 MB

132 requests

Image Optimization

Lazy LoadWebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

Svelte

Infrastructure

Hosting

PRODERJ - Centro de Tecnologia da Informação do RJ

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

16 Technologies Detected

CSS Frameworks

Tailwind CSS

Ant Design Material UI

Analytics

Frameworks

Other

UI Components

Fonts

Tag Managers

Advertising

Web Servers

Icon Libraries

Customer Support

Security

SEO Analysis

D50/100

rj.gov.brrj.gov.br

Governo do Estado do Rio de Janeiro

Portal do Governo do Rio de Janeiro, notícias, transparência, acesso à informação do Governo do Rio de Janeiro.

Title Length35 chars

Recommended: 50-60 chars

Description Length111 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

5 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

2 rules

Allows all crawlers

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

119d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

21.05.2025

Valid Until

13.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.rj.gov.br

SHA-256 Fingerprint

A4:2E:21:AA:F6:F2:DB:48:7F:0F:B0:47:75:15:8D:09:2B:FA:C9:79...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-length

3760

cache-control

🟣 Private(private)

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Sat, 14 Feb 2026 05:03:56 GMT

etag

W/"68a8927d-19a2:dtagent1032926020610050324QC"

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

mx2.webmail.rj.gov.br

Domain Information

rj.gov.br

Domain Age

30 years

Created

29.01.1996

Last Updated

28.03.2022

DNSSEC

Not Enabled

Privacy & Compliance

Axeptio

Cookie Consent Banner

Axeptio

GDPR Indicators

Cookie consent banner detected

CMP: Axeptio

Data Protection Officer mentioned

Legitimate interest basis mentioned

Typography & Readability

Roboto

54/100

Readability

/30

20/40

12px · LH 1.50

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Roboto

Sans

Body Font

Roboto

Sans12px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

36px

12px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Good performance: Using 1 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.

GGoogle Fonts

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

TaboolaMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

27 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(4)connect.facebook.net(4)local(2)gstatic.com(1)cdn.taboola.com(1)

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Last analyzed: 14 Feb 2026 at 05:04

Historical Analysis & Change Tracking