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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caterpillar.com

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

Export

caterpillar.com

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Hosting Provider

Akamai Technologies, Inc.

IP Address

184.51.237.176

Server Location

🇫🇮 Helsinki, Finland

ASN

AS16625

Organization

Akamai Technologies, Inc.

Nameservers

dns4.p03.nsone.net.ns01.extcat.com.ns02.extcat.com.ns03.extcat.com.+4 more

Performance

Page Speed

1.1 MB

68 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Akamai Technologies, Inc.

Detected API Sources

https://maps.googleapis.com/ma...

Technology Stack

4 Technologies Detected

CSS Frameworks

Icon Libraries

Analytics

Tag Managers

SEO Analysis

B70/100

caterpillar.comcaterpillar.com

Caterpillar | Caterpillar Inc

Caterpillar is the world’s leading manufacturer of construction and mining equipment, diesel and natural gas engines, industrial turbines and diesel-electric...

Description truncated.

Title Length29 chars

Recommended: 50-60 chars

Description Length170 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

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Security Score

40%Poor

Critical / Transactional

HTTPS

No WAF

335d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

Valid From

22.01.2026

Valid Until

21.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (20)

Akamai.cat.comanchorcoupling.comanchorfluidsystems.comcat.comcaterpillar.comcatfinancial.co.idcatfinancial.comcatrental.com+12 more

SHA-256 Fingerprint

02:63:44:AB:98:B3:5B:DB:3B:91:08:5D:78:E5:AE:7C:E1:C7:B0:29...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-type

text/html; charset=UTF-8

content-length

26035

server

x-frame-options

SAMEORIGIN

strict-transport-security

max-age:31536000

last-modified

Thu, 19 Feb 2026 22:47:53 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

Domain Information

caterpillar.com

Domain Age

30y 11m

Created

17.03.1995

Expires

18.03.2027

Last Updated

16.02.2026

Registrar

Nom-iq Ltd. dba COM LAUDE

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

Typography & Readability

Roboto Condensed Bold + Noto Sans Regular

77/100

Readability

/30

32/40

14px · LH 1.45

Hierarchy

/20

18/25

4.14x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

17/20

System fonts

Heading Font

Roboto Condensed Bold

Sans58px

Body Font

Noto Sans Regular

Sans14px

Contrast Ratio

Reading Comfort

~65 CPL

Optimal (45–75)

58px

20px

26px

20px

14px

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

✅ Optimal line spacing: 1.45 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 4.1x larger than body text.

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

✅ Optimal line length: ~65 characters per line is comfortable to read.

⚠️ Cramped layout: 61 elements lack adequate spacing.

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Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

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Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(13)maps.googleapis.com(3)googletagmanager.com(2)cdn.cookielaw.org(2)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube

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Last analyzed: 20 Feb 2026 at 02:31

Historical Analysis & Change Tracking