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

unifei.edu.br

https://unifei.edu.br· First analyzed 25 Apr 2026· Updated 25 Apr 2026

Export

unifei.edu.br

Mobile

Sponsored

Hosting Provider

Rede Nacional de Ensino e Pesquisa

IP Address

200.131.128.34

Site Location

🇧🇷 Brazilvia tld

Server Location

🇧🇷 Itajubá, Brazil

ASN

AS1916

Organization

Rede Nacional de Ensino e Pesquisa

Server

Apache

Nameservers

ns-399.awsdns-49.com.ns-853.awsdns-42.net.ns-1038.awsdns-01.org.ns-1735.awsdns-24.co.uk.

Performance

Core Web Vitals

Weight

First Contentful Paint

10.2 s10%

Speed Index

13.2 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.2 MB

135 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9.4

cms

Astrav4.13.0

by Brainstorm Force

View Theme

Technology Stack

29 Technologies Detected

Libraries

UI Components

CSS Frameworks

Icon Libraries

Fonts

Analytics

Web Servers

Customer Support

SEO Analysis

B71/100

Meta Tags12/15

Content3/12

Headings5/8

Technical22/25

E-E-A-T2/7

Images3/7

Links5/5

URL5/5

Social4/5

Freshness4/4

Mobile3/4

Indexability3/3

unifei.edu.brunifei.edu.br

Universidade Federal de Itajubá - UNIFEI

Principais Interesses: Coordenação de Processos Seletivos ACESSO FÁCIL Oportunidades Ouvidoria Calendários Bibliotecas SIG’s Moodle Cursos livres Unifei onli...

Description truncated.

Title Length40 chars

Recommended: 50-60 chars (~234px / 580px)

Description Length266 chars

Recommended: 120-160 chars

Issues (2)

• Very thin content (6 words). Search engines need substantial content for ranking.
• Most images missing alt text (22/34) — critical for accessibility and SEO

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

13 URLs

13 sub-sitemaps

robots.txt

8 rules

Local SEO

Local Search Readiness

15/100

Poor

4 13

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

D45/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

8/25

Citation

10/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:2%

Words:1,264

Token eff.:Optimal

Structured Data

5 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

sameAs entity links

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

AI readiness recommendation preview...

Upgrade to view recommendations

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Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

78/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

10/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

15/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

14/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

15/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

4/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

1 recommendation

•Accessibility recommendation preview...

Upgrade to view recommendations

Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

40/100

283 mg

CO₂e / view

2.2 MB

Page Weight

50%

Cleaner Than

New Visitor

323 mg

Returning (cached)

161 mg

Annual (10K/mo)

33.9 kg

Emission Segments

Data Center

63 mg

Network

68 mg

Device

152 mg

Resource Breakdown

JavaScript

309.5 KB

Images

1005.3 KB

CSS

903.8 KB

Fonts

3.8 KB

HTML

61.7 KB

Green Hosting Not Verified

Rede Nacional de Ensino e Pesquisa

4 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

36%Critical

Interactive

HTTPS

No WAF

153d

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

25.08.2025

Valid Until

26.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.unifei.edu.brunifei.edu.br

SHA-256 Fingerprint

C4:F2:A0:40:CD:73:62:6C:A1:E8:F2:BA:91:55:31:41:07:FB:2B:DF...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

access-control-allow-origin

connection

Upgrade, close

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Sat, 25 Apr 2026 15:33:54 GMT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

MX Records (5)

alt1.aspmx.l.google.com

alt2.aspmx.l.google.com

aspmx.l.google.com

alt3.aspmx.l.google.com

+1 more

Domain Information

unifei.edu.br

Domain Age

24y 3m

Created

10.01.2002

Last Updated

24.04.2025

DNSSEC

Not Enabled

Privacy & Compliance

CookieYes

Cookie Consent Banner

CookieYes

GDPR Indicators

Cookie consent banner detected

CMP: CookieYes

Data Protection Officer mentioned

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

79/100

Mobile Friendly141 breakpoints

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=device-width, initial-scale=1

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Exo 2 + Helvetica

WCAG Partial

53/100

Readability

/30

15/30

14px · LH 1.71

Hierarchy

/20

6/20

WCAG

/25

16/25

1.72:1 min contrast

Performance

/25

16/25

2 fonts · 10 req

Heading Font

Exo 2

Sans

Body Font

Helvetica

Sans14px

Contrast Ratio

1.72:1

17 issues

Reading Comfort

~88 CPL

Wide lines

24px

30px

22px

14px

Minor Second

Scale

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

⚠️ Wide lines: ~88 chars/line. Use max-width: 65ch for comfortable reading.

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 17 elements below WCAG AA threshold (min 1.7:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ Lean font stack: 2 font families keeps load times fast.

GGoogle Fonts Buy on MyFontsFlesch 0

Color Palette

7 unique colors

Light

#ffffff

Background· 26.6%

#013a71

Primary· 44.099999999999994%

#a1b6d0

Secondary· 8.5%

#4a4a5e

Text· 6%

#9098b0

Secondary· 5.9%

#dae0e4

Secondary· 4.6%

#6886ad

Secondary· 4.4%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

CookieYesSMB

GDPR Cookie ConsentFree

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

unifei.edu.br(18)googletagmanager.com(1)vlibras.gov.br(1)

Website Identity

UNIFEI

Organization

Universidade Federal de Itajubá

unifei.edu.br/

24 years old

Location detected: 🇧🇷 Brazilvia tld

📧 Google Workspacept-BR

Social Profiles

Facebook X (Twitter)Instagram

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Last analyzed: 25 Apr 2026 at 15:34

Historical Analysis & Change Tracking