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

ubuntuforums.org

https://ubuntuforums.org· First analyzed 14 Feb 2026· Updated 14 Feb 2026

Export

ubuntuforums.org

Mobile

Sponsored

Hosting Provider

Canonical Group Limited

IP Address

185.125.188.16

Server Location

🇬🇧 City of London, United Kingdom

ASN

AS41231

Organization

Canonical Group Limited

Nameservers

ns2.canonical.com.ns1.canonical.com.ns3.canonical.com.

Performance

Page Speed

1.7 MB

88 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Canonical Group Limited

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

8 Technologies Detected

Meta Frameworks

Libraries

CSS Frameworks

Icon Libraries

Fonts

Analytics

Tag Managers

Customer Support

SEO Analysis

B72/100

ubuntuforums.orgubuntuforums.org

Ubuntu Community Hub

The meeting point for the Ubuntu community.

Title Length20 chars

Recommended: 50-60 chars

Description Length43 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (20/21)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

robots.txt

36 rules

Sitemap reference found

Sponsored

Security Score

70%Good

Critical / Transactional

HTTPS

No WAF

87d

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/2

Valid From

11.02.2026

Valid Until

12.05.2026

Subject Alternative Names (2)

community.ubuntu.comdiscourse.ubuntu.com

SHA-256 Fingerprint

C9:FC:A5:0A:B9:54:E7:DA:0B:DB:34:1D:AE:CA:88:B8:79:D7:EE:C1...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache, no-store)

content-security-policy

upgrade-insecure-requests; base-uri 'self'; object-src 'none...

content-type

text/html; charset=utf-8

cross-origin-opener-policy

same-origin-allow-popups

date

Sat, 14 Feb 2026 07:49:34 GMT

referrer-policy

strict-origin-when-cross-origin

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

Domain Information

ubuntuforums.org

Domain Age

21y 4m

Created

09.10.2004

Expires

09.10.2026

Last Updated

12.09.2024

Registrar

MarkMonitor Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Typography & Readability

Droid Sans

79/100

Readability

/30

40/40

16px · LH 1.40

Hierarchy

/20

18/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Droid Sans

Sans32px

Body Font

Droid Sans

Sans16px

Contrast Ratio

Reading Comfort

~35 CPL

Needs attention

32px

24px

19px

18px

16px

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

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

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

✅ 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

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

ubuntucommunity.s3.us-east-2.amazonaws.com(19)googletagmanager.com(1)

Website Identity

GitHub

Sponsored

Last analyzed: 14 Feb 2026 at 07:50

Historical Analysis & Change Tracking