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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ufpr.br

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

Export

ufpr.br

Sponsored

Hosting Provider

UFPR (Universidade Federal do Paraná)

IP Address

200.17.209.3

Server Location

🇧🇷 Curitiba, Brazil

ASN

AS10881

Organization

UFPR (Universidade Federal do Paraná)

Server

Nginx

Nameservers

ns.ufpr.br.ns2.ufpr.br.

Performance

Page Speed

20.2 MB

73 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

jQuery

Styling

Tailwind CSS

CMS

WordPressv6.7.4

Infrastructure

Hosting

UFPR (Universidade Federal do Paraná)

Technology Stack

8 Technologies Detected

CSS Frameworks

Meta Frameworks

Libraries

Icon Libraries

Analytics

Web Servers

Languages

SEO Analysis

C68/100

ufpr.brufpr.br

Universidade Federal do Paraná

No description available for this page.

Title Length30 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description - important for click-through rates
• Many images missing alt text (19/35)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

19 URLs

robots.txt

4 rules

Sitemap reference found

Sponsored

Security Score

36%Critical

Interactive

HTTPS

No WAF

223d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

28.08.2025

Valid Until

29.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.ufpr.brufpr.br

SHA-256 Fingerprint

DE:F2:A3:0E:4D:46:4C:C9:B3:DF:C5:39:30:94:20:51:2A:E9:3B:A6...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

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HTTP Headers

Developer Console

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Tue, 17 Feb 2026 21:30:37 GMT

link

<https://ufpr.br/wp-json/>; rel="https://api.w.org/", <https...

referrer-policy

no-referrer-when-downgrade

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

ufpr-br.mail.protection.outlook.com

Domain Information

ufpr.br

Domain Age

30y 1m

Created

01.01.1996

Last Updated

10.11.2015

DNSSEC

Not Enabled

Typography & Readability

Open Sans + system-ui

84/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

21/25

2.5x ratio

WCAG

/25

11/15

Contrast: undefined

Performance

/25

17/20

System fonts

Heading Font

Open Sans

Sans40px

Body Font

system-ui

Sans16px

Contrast Ratio

Reading Comfort

Dual Sans-Serif

left aligned

40px

20px

24px

16px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.5x larger than body text.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

✅ Protected text on images: Using text-shadow for readability.

⚠️ Cramped layout: 78 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

20 Resources

Scripts

Styles

Async

Defer

Top Script Sources

ufpr.br(4)stats.ufpr.br(2)cdn.userway.org(2)vlibras.gov.br(1)code.jquery.com(1)

Website Identity

Facebook X (Twitter)Instagram YouTube

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Last analyzed: 17 Feb 2026 at 21:31

Historical Analysis & Change Tracking