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

deere.com

https://deere.com· First analyzed 15 Feb 2026· Updated 15 Feb 2026

Export

deere.com

Mobile

Sponsored

Hosting Provider

Deere & Company

IP Address

164.121.250.180

Server Location

🇺🇸 East Moline, United States

ASN

AS10846

Organization

Deere & Company

Server

Apache

Nameservers

a11-67.akam.net.a10-66.akam.net.a4-66.akam.net.a1-128.akam.net.+2 more

Performance

Page Speed

1.9 MB

133 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Deere & Company

Technology Stack

11 Technologies Detected

Analytics

Google Analytics

Facebook Pixel

Advertising

Google Ads LinkedIn Ads

Libraries

UI Components

Other

CSS Frameworks

Icon Libraries

Fonts

Web Servers

SEO Analysis

D58/100

deere.comdeere.com

John Deere US | Products & Services Information

Explore agricultural, construction, forestry machinery, technology, services and more on the official John Deere website. Find a dealer in your area or purch...

Description truncated.

Title Length47 chars

Recommended: 50-60 chars

Description Length168 chars

Recommended: 120-160 chars

Issues (1)

• Missing viewport meta tag - page may not be mobile-friendly

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

robots.txt

14 rules

Sitemap reference found

Sponsored

Security Score

31%Critical

Interactive

HTTPS

No WAF

348d

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

30.01.2026

Valid Until

29.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (20)

www.deere.comwww.deere.eswww.deere.euwww.deere.fiwww.deere.frwww.deere.gewww.deere.grwww.deere.hr+12 more

SHA-256 Fingerprint

76:B6:69:EF:A2:BA:35:9A:C1:4E:EE:60:4C:C0:D7:4C:9F:45:B2:EA...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟡 6 Hours(max-age=22128)

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-length

21353

content-type

text/html; charset=UTF-8

date

Sun, 15 Feb 2026 04:47:32 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

mxb-000e4101.gslb.pphosted.com

mxa-000e4101.gslb.pphosted.com

Domain Information

deere.com

Domain Age

36y 1m

Created

12.01.1990

Expires

11.01.2027

Last Updated

29.01.2026

Registrar

CSC Corporate Domains, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Typography & Readability

jd_sans_probold + Helvetica Neue

83/100

Readability

/30

40/40

17px · LH 1.53

Hierarchy

/20

18/25

2.94x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

jd_sans_probold

Sans50px

Body Font

Helvetica Neue

Sans17px

Contrast Ratio

Reading Comfort

~51 CPL

Optimal (45–75)

50px

35px

24px

18px

17px

✅ Excellent readability: 17px body text is ideal for all devices.

✅ Optimal line spacing: 1.53 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.9x larger than body text.

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

✅ Optimal line length: ~51 characters per line is comfortable to read.

⚠️ Cramped layout: 16 elements lack adequate spacing.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

8 Tools Detected

Enterprise

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

LinkedIn AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

OneTrustEnterprise

TrustArcEnterprise

Cookie consent and privacy compliance tools

Social Media

Facebook SDKFree

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

26 Resources

Scripts

Styles

Async

Defer

Top Script Sources

assets.adobedtm.com(6)googletagmanager.com(5)connect.facebook.net(5)snap.licdn.com(1)apis.google.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube TikTok

Sponsored

Last analyzed: 15 Feb 2026 at 04:47

Historical Analysis & Change Tracking