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

columbia.com

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

Export

columbia.com

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.18.67.112

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

pdns1.ultradns.net.pdns2.ultradns.net.pdns3.ultradns.org.pdns4.ultradns.org.+2 more

Performance

Page Speed

2.1 MB

250 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Detected API Sources

https://p.placed.com/api/v2/sy...

Technology Stack

22 Technologies Detected

Advertising

Google Ads Pinterest Tag TikTok Pixel Snapchat Pixel Microsoft Advertising Criteo Taboola Outbrain

Analytics

Payments

CSS Frameworks

Icon Libraries

Fonts

Adobe Fonts (Typekit)

Customer Support

Zendesk

CDN

Cloudflare

SEO Analysis

C67/100

columbia.comcolumbia.com

Outerwear, Sportswear & Footwear | Columbia Sportswear

Columbia's innovative outdoor clothing, footwear, and gear is built to fight back against nature's tantrums. Winter Sale: Up to 50% off + Members get extra 30%.

Title Length54 chars

Recommended: 50-60 chars

Description Length160 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (35/55)

3 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

85 rules

Sitemap reference found

Sponsored

Security Score

75%Good

Critical / Transactional

HTTPS

WAF

187d

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/2+H3

Valid From

26.08.2025

Valid Until

25.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

columbia.comcolumbia.czwww.columbia.czcolumbia.nowww.columbia.nocolumbia.uawww.columbia.uacolumbiasportswear.at+12 more

SHA-256 Fingerprint

9D:43:84:6D:E5:D9:20:A6:50:E6:B9:28:B3:6F:8E:93:39:2F:6D:58...

Upgrade to view header details

HTTP Headers

Developer Console

age

alt-svc

h3=":443"; ma=86400

cache-control

⚪ Custom(s-maxage=30, stale-while-revalidate=30)

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9d09ac694e99db9b-FRA

content-encoding

⚡ Brotli(br)

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

columbia-com.mail.protection.outlook.com

Domain Information

columbia.com

Domain Age

32y 9m

Created

04.05.1993

Expires

05.05.2026

Last Updated

03.04.2025

Registrar

MarkMonitor Inc.

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

Typography & Readability

Avenir Next

63/100

Readability

/30

32/40

16px · LH 1.25

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Avenir Next

Sans

Body Font

Avenir Next

Sans16px

Contrast Ratio

Reading Comfort

~41 CPL

Needs attention

18px

24px

16px

Perfect Fourth

Scale

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

✅ 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.

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 36 elements lack adequate spacing.

AAdobe Fonts Buy on MyFonts

Business & Marketing Stack

11 Tools Detected

Enterprise

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

Quantum MetricEnterprise

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Pinterest AdsMid-Market

TikTok PixelMid-Market

Microsoft AdsEnterprise

Reddit PixelMid-Market

Snapchat PixelMid-Market

Ad platforms and retargeting pixels

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

20 Resources

Scripts

Styles

Async

Defer

Top Script Sources

analytics.tiktok.com(3)static.scarabresearch.com(2)s.pinimg.com(2)connect.facebook.net(2)cdn.boomtrain.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube TikTok Threads

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Last analyzed: 19 Feb 2026 at 23:52

Historical Analysis & Change Tracking