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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canadapost-postescanada.ca

https://canadapost-postescanada.ca· First analyzed 18 Feb 2026· Updated 18 Feb 2026

Export

Sponsored

Hosting Provider

Akamai International, BV

IP Address

23.201.251.179

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS16625

Organization

Akamai International, BV

Nameservers

a2-64.akam.net.a7-66.akam.net.a8-67.akam.net.a6-65.akam.net.+2 more

Performance

Page Speed

2.9 MB

107 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Akamai International, BV

Technology Stack

12 Technologies Detected

CSS Frameworks

Tailwind CSS

Foundation Normalize.css

Advertising

Twitter Ads LinkedIn Ads Pinterest Tag

Analytics

Libraries

Other

Email Marketing

Security

SEO Analysis

C68/100

canadapost-postescanada.cacanadapost-postescanada.ca

Mailing and shipping for Personal and Business | Canada Post

Mail letters, ship parcels, market your business and sell online with Canada Post. We offer services for individuals and services for businesses of all sizes.

Title Length60 chars

Recommended: 50-60 chars

Description Length158 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (33/45)

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

156 rules

Sitemap reference found

Sponsored

Security Score

65%Fair

Critical / Transactional

HTTPS

No WAF

303d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

19.12.2025

Valid Until

18.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (19)

www.canadapost.cawww.postescanada.cawww.postescanada-canadapost.cawww.canadapost-postescanada.casoa-gw.canadapost.caservices.canadapost.caprd11.postescanada.caprd11.canadapost.ca+11 more

SHA-256 Fingerprint

CF:AD:A0:B0:54:37:FB:68:7D:F1:31:CB:84:BC:5B:FC:6F:9C:68:CB...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-length

23589

content-security-policy

frame-ancestors 'self'

content-type

text/html; charset=UTF-8

date

Wed, 18 Feb 2026 08:32:34 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

mh1.cpg-gpc.ca

mh2.cpg-gpc.ca

Domain Information

canadapost-postescanada.ca

Domain Age

22y 8m

Created

10.06.2003

Expires

10.06.2027

Last Updated

03.02.2026

Registrar

Internic.ca Inc.

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Typography & Readability

Canadiana

60/100

Readability

/30

12/40

12px · LH 1.33

Hierarchy

/20

25/25

4x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Canadiana

Sans48px

Body Font

Canadiana

Sans12px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

48px

18px

16px

12px

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

✅ Strong hierarchy: Headlines are 4.0x 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.

⚠️ Cramped layout: 78 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

10 Tools Detected

Enterprise

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

LinkedIn AdsEnterprise

Pinterest AdsMid-Market

Reddit PixelMid-Market

Ad platforms and retargeting pixels

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Social Media

Facebook SDKFree

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

25 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(5)siteintercept.qualtrics.com(3)s.pinimg.com(2)assets.adobedtm.com(2)googletagmanager.com(2)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube

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Last analyzed: 18 Feb 2026 at 08:32

Historical Analysis & Change Tracking