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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canadavisa.com

https://canadavisa.com· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

canadavisa.com

Mobile

Sponsored

Hosting Provider

Incapsula Inc

IP Address

45.60.63.122

Server Location

🇺🇸 New York, United States

ASN

AS19551

Organization

Incapsula Inc

Server

Nginx

CDN

Nameservers

ns2.canadavisa.com.ns0.canadavisa.com.ns4.canadavisa.com.ns3.canadavisa.com.+1 more

Performance

Page Speed

811 KB

31 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

Infrastructure

Hosting

Incapsula Inc

CDN

Technology Stack

13 Technologies Detected

Advertising

Google Ads Google AdSense LinkedIn Ads Microsoft Advertising

Analytics

Libraries

CSS Frameworks

Icon Libraries

Fonts

Tag Managers

Web Servers

Security

SEO Analysis

A88/100

canadavisa.comcanadavisa.com

Your Trusted Canada Immigration Source | Canadavisa.com

Immigration to Canada, Visas, Permanent Residence, & Citizenship. Explore 100+ options including Express Entry, Family Sponsorship, & Temporary Visas.

Title Length55 chars

Recommended: 50-60 chars

Description Length150 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

Upgrade to view details

Sponsored

Security Score

31%Critical

Interactive

HTTPS

WAF

18d

Certificate Details

Type

Extended Validation (EV)

Certificate Authority

GoDaddy.com, Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

Valid From

28.02.2025

Valid Until

09.03.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.canadavisa.comcanadavisa.com

SHA-256 Fingerprint

0C:5B:DF:54:92:50:5A:3E:47:C0:C4:12:F2:3A:28:1E:68:A0:D8:B1...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

server

nginx

date

Thu, 19 Feb 2026 16:02:52 GMT

content-type

text/html; charset=UTF-8

vary

Accept-Encoding

x-powered-by

Craft CMS

last-modified

Fri, 11 Aug 2023 04:05:28 GMT

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

mx.canadavisa.com

mx1.canadavisa.com

mx2.canadavisa.com

mx3.canadavisa.com

+1 more

Domain Information

canadavisa.com

Domain Age

29y 1m

Created

08.01.1997

Expires

02.07.2027

Last Updated

02.09.2022

Registrar

GoDaddy.com, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Helvetica + Helvetica Neue

72/100

Readability

/30

32/40

14px · LH 1.50

Hierarchy

/20

20/25

1.71x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Helvetica

Sans24px

Body Font

Helvetica Neue

Sans14px

Contrast Ratio

Reading Comfort

~95 CPL

Needs attention

24px

19px

18px

14px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

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

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

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

⚠️ Wide lines: ~95 chars/line. Consider max-width for better reading flow.

GGoogle Fonts

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Google AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

16 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(4)securepubads.g.doubleclick.net(2)evaluator.canadavisa.com(2)gstatic.com(1)connect.facebook.net(1)

Website Identity

canadavisa.com

29 years old

GoDaddy.com, LLC📧 Microsoft 365

Social Profiles

Facebook X (Twitter)Instagram LinkedIn YouTube

Sponsored

Last analyzed: 19 Feb 2026 at 16:03

Historical Analysis & Change Tracking