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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bibliotecapleyades.net

https://bibliotecapleyades.net· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

Sponsored

Hosting Provider

Aruba S.p.A.

IP Address

31.11.35.143

Server Location

🇮🇹 Arezzo, Italy

ASN

AS31034

Organization

Aruba S.p.A.

Server

Microsoft IIS

Nameservers

dns3.arubadns.net.dns.technorail.com.dns4.arubadns.cz.dns2.technorail.com.

Performance

Page Speed

94 KB

17 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Aruba S.p.A.

Technology Stack

3 Technologies Detected

Meta Frameworks

Astro

Web Servers

Microsoft IISv10.0

Frameworks

ASP.NET

SEO Analysis

F17/100

bibliotecapleyades.netbibliotecapleyades.net

Inicio

No description available for this page.

Title Length6 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (4)

• Missing meta description - important for click-through rates
• Missing H1 tag - every page should have one H1
• Many images missing alt text (15/15)

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

2,594 URLs

robots.txt

2 rules

Sponsored

Security Score

71%Good

Static / Informational

HTTPS

No WAF

181d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Actalis S.p.A.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

21.07.2025

Valid Until

21.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

bibliotecapleyades.net*.bibliotecapleyades.net

SHA-256 Fingerprint

79:DD:B6:0F:2B:D9:04:FC:EE:E4:5C:B1:AD:76:08:7F:81:27:3F:E1...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

alt-svc

h3=":443"; ma=86400; persist=1

content-encoding

📦 Gzip(gzip)

content-length

6972

content-type

text/html

date

Fri, 20 Feb 2026 04:16:06 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

mx.bibliotecapleyades.net

Domain Information

bibliotecapleyades.net

Domain Age

22y 7m

Created

02.07.2003

Expires

02.07.2030

Last Updated

11.12.2024

Registrar

Tucows Domains Inc.

DNSSEC

Not Enabled

Typography & Readability

Times New Roman

61/100

Readability

/30

30/40

16px · LH --

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Times New Roman

Body Font

Times New Roman

Serif16px

Contrast Ratio

Reading Comfort

~57 CPL

Optimal (45–75)

16px

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

✅ Good performance: Using 1 font families keeps load times fast.

✅ Optimal line length: ~57 characters per line is comfortable to read.

⚠️ Cramped layout: 44 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

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Sponsored

Scripts & Styles

2 Resources

Scripts

Styles

Async

Defer

Top Script Sources

d31qbv1cthcecs.cloudfront.net(1)

Website Identity

X (Twitter)

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Last analyzed: 20 Feb 2026 at 04:16

Historical Analysis & Change Tracking