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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tuxfamily.org

https://tuxfamily.org· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

tuxfamily.org

Sponsored

Hosting Provider

IELO

IP Address

188.121.227.54

Server Location

🇫🇷 Suisse, France

ASN

AS29075

Server

Apache

Nameservers

ns1.staff.tuxfamily.net.ns2.staff.tuxfamily.net.

Performance

Page Speed

74 KB

13 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

IELO

Technology Stack

1 Technologies Detected

Web Servers

Apachev2.4.10

SEO Analysis

D50/100

tuxfamily.orgtuxfamily.org

TuxFamily: Free hosting for free people

No description available for this page.

Title Length39 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description - important for click-through rates
• Missing viewport meta tag - page may not be mobile-friendly

7 issues found

Upgrade to view details

Sponsored

Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

25d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

14.12.2025

Valid Until

14.03.2026

Subject Alternative Names (8)

tuxfamily.comtuxfamily.infotuxfamily.nettuxfamily.orgwww.tuxfamily.comwww.tuxfamily.infowww.tuxfamily.netwww.tuxfamily.org

SHA-256 Fingerprint

D6:C4:C9:3F:8C:FA:B8:E6:20:A5:32:16:83:33:A0:43:8D:E6:C4:32...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

Keep-Alive

content-type

application/xhtml+xml; charset=utf-8

date

Mon, 16 Feb 2026 12:59:55 GMT

keep-alive

timeout=5, max=100

server

Apache/2.4.10 (Debian)

strict-transport-security

max-age=15768000

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mx2.tuxfamily.net

mx1.tuxfamily.net

Domain Information

tuxfamily.org

Domain Age

26y 4m

Created

29.09.1999

Expires

29.09.2028

Last Updated

28.05.2025

Registrar

Gandi SAS

DNSSEC

Not Enabled

Typography & Readability

sans-serif

40/100

Readability

/30

12/40

12px · LH 1.30

Hierarchy

/20

20/25

1.8x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

sans-serif

Sans22px

Body Font

sans-serif

Sans12px

Contrast Ratio

Reading Comfort

Single Font Family

justify aligned

22px

14px

12px

❌ Critical: 12px body text is too small. Increase to at least 14px.

✅ Good hierarchy: Clear distinction between headlines and body text.

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

✅ Consistent design: Single font family with weight variations is a modern best practice.

⚠️ Risky: Text appears on background images without overlay protection.

⚠️ Cramped layout: 8 elements lack adequate spacing.

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Scripts & Styles

1 Resources

Scripts

Styles

Async

Defer

Top Script Sources

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Last analyzed: 16 Feb 2026 at 13:00

Historical Analysis & Change Tracking