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

distrowatch.com

https://distrowatch.com· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

distrowatch.com

Sponsored

Hosting Provider

ASERGO Scandinavia ApS

IP Address

82.103.129.71

Server Location

🇩🇰 Copenhagen, Denmark

ASN

AS30736

Server

Apache

Nameservers

ns-231-b.gandi.net.ns-197-c.gandi.net.ns-57-a.gandi.net.

Performance

Page Speed

2.2 MB

67 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

Technology Stack

13 Technologies Detected

Advertising

Google Ads Google AdSense Criteo Outbrain

CSS Frameworks

Frameworks

Meta Frameworks

Icon Libraries

Fonts

Payments

Web Servers

Languages

SEO Analysis

D41/100

distrowatch.comdistrowatch.com

DistroWatch.com: Put the fun back into computing. Use Linux, BSD.

News and feature lists of Linux and BSD distributions.

Title Length65 chars

Recommended: 50-60 chars

Description Length54 chars

Recommended: 120-160 chars

Issues (1)

• Missing viewport meta tag - page may not be mobile-friendly

9 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

138 rules

Sponsored

Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

88d

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

15.02.2026

Valid Until

16.05.2026

Subject Alternative Names (3)

distrowatch.comdistrowatch.orgwww.distrowatch.org

SHA-256 Fingerprint

34:93:01:03:CD:45:09:B5:D1:2A:7E:AD:18:8B:82:CB:89:56:2A:66...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

connection

Keep-Alive

content-type

text/html; charset=UTF-8

date

Mon, 16 Feb 2026 13:54:34 GMT

keep-alive

timeout=5, max=100

server

Apache/2.4.66 (FreeBSD) OpenSSL/3.0.16 PHP/8.2.30

transfer-encoding

chunked

Good Warning Issue

Email Infrastructure

Zoho Mail

Score

SPF

DKIM

DMARC

MX Records (3)

mx3.zoho.com

mx2.zoho.com

mx.zoho.com

Domain Information

distrowatch.com

Domain Age

24y 7m

Created

03.07.2001

Expires

03.07.2028

Last Updated

27.04.2025

Registrar

Gandi SAS

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Legitimate interest basis mentioned

Typography & Readability

Open Sans + Arial

40/100

Readability

/30

5/40

12px · LH 1.00

Hierarchy

/20

8/25

1.46x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Open Sans

Sans18px

Body Font

Arial

Sans12px

Contrast Ratio

Reading Comfort

~44 CPL

Needs attention

18px

14px

12px

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

⚠️ Tight line spacing (1.00). Consider 1.4-1.6 for better readability.

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

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

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

⚠️ Inconsistent alignment: Mix of left/center/right creates visual noise.

GGoogle Fonts

Business & Marketing Stack

3 Tools Detected

Enterprise

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

15 Resources

Scripts

Styles

Async

Defer

Top Script Sources

pagead2.googlesyndication.com(4)securepubads.g.doubleclick.net(2)fundingchoicesmessages.google.com(2)hbx.media.net(1)contextual.media.net(1)

Website Identity

X (Twitter)GitHub Mastodon

Sponsored

Last analyzed: 16 Feb 2026 at 13:54

Historical Analysis & Change Tracking