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

caixa.gov.br

https://caixa.gov.br· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

caixa.gov.br

Sponsored

Hosting Provider

Caixa Economica Federal

IP Address

200.201.165.27

Server Location

🇧🇷 Brasília, Brazil

ASN

AS20116

Organization

Caixa Economica Federal

Nameservers

ns3.aziondns.org.ns2.aziondns.com.ns1.aziondns.net.

Performance

Page Speed

8 MB

99 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

Svelte

Infrastructure

Hosting

Caixa Economica Federal

Technology Stack

20 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity Segment

Libraries

jQuery

jQuery UI

UI Components

Swiper Slick Carousel

CSS Frameworks

Frameworks

Meta Frameworks

Other

Icon Libraries

Fonts

Tag Managers

Advertising

Customer Support

CDN

SEO Analysis

D47/100

caixa.gov.brcaixa.gov.br

CAIXA

Caixa - O banco de todos os brasileiros

Title Length5 chars

Recommended: 50-60 chars

Description Length39 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

7 issues found

Upgrade to view details

Sponsored

Security Score

79%Good

Interactive

HTTPS

No WAF

132d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Valid Certificadora Digital LTDA

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

28.06.2025

Valid Until

28.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.caixa.gov.brcaixa.gov.br

SHA-256 Fingerprint

0B:91:0C:AC:18:3B:49:EE:AA:AB:8E:08:A8:8B:50:B8:98:A9:98:D1...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟣 Private(private)

content-encoding

📦 Gzip(gzip)

content-security-policy

frame-ancestors 'self' teams.microsoft.com *.teams.microsoft...

content-type

text/html; charset=utf-8

cross-origin-opener-policy

same-origin

date

Mon, 16 Feb 2026 20:43:31 GMT

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

caixa-gov-br.mail.protection.outlook.com

Domain Information

caixa.gov.br

Domain Age

28y 6m

Created

20.08.1997

Last Updated

24.09.2023

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

CAIXA Std Book + CAIXA Std Bold

65/100

Readability

/30

32/40

42px · LH 1.27

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

10/20

3 fonts

Heading Font

CAIXA Std Book

Sans

Body Font

CAIXA Std Bold

Sans42px

Contrast Ratio

Reading Comfort

~43 CPL

Needs attention

20px

42px

✅ Excellent readability: 42px body text is ideal for all devices.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Growing

Behavior Analytics

Microsoft ClarityFree

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(13)googletagmanager.com(2)scripts.clarity.ms(1)clarity.ms(1)google-analytics.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn

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Last analyzed: 16 Feb 2026 at 20:44

Historical Analysis & Change Tracking