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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bvsalud.org

https://bvsalud.org· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

bvsalud.org

Sponsored

Hosting Provider

Organização Pan Americana da Saúde

IP Address

200.10.179.239

Server Location

🇧🇷 Saúde, Brazil

ASN

AS1251

Organization

Organização Pan Americana da Saúde

Server

Apache

CDN

Bunny

Nameservers

coco.bunny.net.kiki.bunny.net.

Performance

Page Speed

1.9 MB

74 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

jQuery

Styling

Bootstrap

CMS

WordPress

Infrastructure

Hosting

Organização Pan Americana da Saúde

CDN

Bunny

Technology Stack

21 Technologies Detected

Plugins

Accessibility Wp Plugin Main Crelly Slider Direve Ultimate Posts Widget

Google Analytics For Wordpress

Ml Slider Siteorigin Panels Page Links To

Libraries

Analytics

CSS Frameworks

UI Components

Other

AOS (Animate On Scroll)

Icon Libraries

Font Awesome

Fonts

Google Fonts

Web Servers

Apache

SEO Analysis

D50/100

bvsalud.orgbvsalud.org

Portal Regional da BVS | Informação para Ação em Saúde

No description available for this page.

Title Length54 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 (17/20)

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

21 URLs

robots.txt

4 rules

Sitemap reference found

Sponsored

Security Score

86%Very Good

Interactive

HTTPS

No WAF

70d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

29.01.2026

Valid Until

29.04.2026

Subject Alternative Names (2)

bvsalud.orgwww.bvsalud.org

SHA-256 Fingerprint

13:3B:EB:CE:9E:02:09:F1:C5:9B:EA:9F:42:51:9A:E9:F9:97:C2:4D...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate)

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

content-length

15028

content-security-policy

default-src 'self'; script-src 'self' 'unsafe-inline' 'unsaf...

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

esmeralda04.bireme.br

esmeralda02.bireme.br

Domain Information

bvsalud.org

Domain Age

23y 11m

Created

19.03.2002

Expires

19.03.2026

Last Updated

25.11.2025

Registrar

Domain.com - Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

Typography & Readability

Poppins + sans-serif

80/100

Readability

/30

40/40

24px · LH 1.50

Hierarchy

/20

15/25

1x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Poppins

Sans24px

Body Font

sans-serif

Sans24px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

24px

32px

28px

24px

Major Second

Scale

✅ Excellent readability: 24px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

⚠️ Weak hierarchy: Headlines should be at least 2x body size for clear visual structure.

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

✅ 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

3 Tools Detected

Growing

Behavior Analytics

HotjarMid-Market

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

bvsalud.org(15)static.hotjar.com(1)script.hotjar.com(1)ssl.google-analytics.com(1)googletagmanager.com(1)

Sponsored

Last analyzed: 17 Feb 2026 at 03:08

Historical Analysis & Change Tracking