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

uline.com

https://uline.com· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

uline.com

Sponsored

Hosting Provider

Akamai Technologies, Inc.

IP Address

104.126.37.137

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS20940

Organization

Akamai Technologies, Inc.

Server

Microsoft IIS

CDN

Akamai

WAF

Akamai

Nameservers

a5-66.akam.net.a13-66.akam.net.a18-67.akam.net.a2-64.akam.net.+2 more

Performance

Page Speed

1.4 MB

71 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

BigCommerce

Technology Stack

14 Technologies Detected

Frameworks

Analytics

Customer Support

Advertising

Google Ads Microsoft Advertising

Libraries

Other

CSS Frameworks

Tag Managers

Other

Web Servers

SEO Analysis

D43/100

uline.comuline.com

ULINE - Shipping Boxes, Shipping Supplies, Packaging Materials, Pac...

Uline stocks over 43,000 shipping boxes, packing materials, warehouse supplies, material handling and more. Same day shipping for cardboard boxes, plastic ba...

Title truncated. Description truncated.

Title Length80 chars

Recommended: 50-60 chars

Description Length202 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Missing viewport meta tag - page may not be mobile-friendly

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

robots.txt

49 rules

Sitemap reference found

Sponsored

Security Score

71%Good

Interactive

HTTPS

WAF

196d

Certificate Details

Type

Extended Validation (EV)

Certificate Authority

DigiCert Inc

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

04.09.2025

Valid Until

04.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.uline.comuline.com

SHA-256 Fingerprint

07:37:1A:55:42:7F:2B:C9:7B:3A:80:15:58:2A:2E:7B:DE:BD:F2:FF...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=93600

cache-control

🔴 No Cache(max-age=0, no-cache, no-store)

content-encoding

⚡ Brotli(br)

content-length

13655

content-security-policy

frame-ancestors 'self';

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

mxa-003aa401.gslb.pphosted.com

mxb-003aa401.gslb.pphosted.com

Domain Information

uline.com

Domain Age

30y 2m

Created

02.12.1995

Expires

01.12.2030

Last Updated

01.12.2020

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

AvantGardeGothic

21/100

Readability

/30

10/40

12px · LH --

Hierarchy

/20

8/25

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

AvantGardeGothic

Body Font

AvantGardeGothic

Sans12px

Contrast Ratio

Reading Comfort

Single Family

left aligned

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

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

⚠️ Risky: Text appears on background images without overlay protection.

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

Buy on MyFonts

Business & Marketing Stack

6 Tools Detected

Enterprise

Customer Support

IntercomMid-Market

Live chat and helpdesk tools

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

Quantum MetricEnterprise

User behavior and product analytics

Advertising

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

A/B Testing & Optimization

OptimizelyEnterprise

Experimentation and conversion optimization

Sponsored

Scripts & Styles

21 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(8)googletagmanager.com(3)cdn.quantummetric.com(2)c.riskified.com(1)widget.intercom.io(1)

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Last analyzed: 20 Feb 2026 at 11:09

Historical Analysis & Change Tracking