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

esri.com

https://esri.com· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

esri.com

Mobile

Sponsored

Hosting Provider

Environmental Systems Research Institute

IP Address

198.102.61.110

Server Location

🇺🇸 Las Vegas, United States

ASN

AS10411

Organization

Environmental Systems Research Institute

CDN

Fastly

Nameservers

a2-65.akam.net.a13-64.akam.net.a3-67.akam.net.a8-64.akam.net.+6 more

Performance

Page Speed

6.4 MB

110 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Adobe Experience Manager

Technology Stack

8 Technologies Detected

Analytics

Google Analytics

Facebook Pixel Mouseflow

CSS Frameworks

Bootstrap

Tailwind CSS

Advertising

Google Ads LinkedIn Ads

Libraries

jQuery

SEO Analysis

A88/100

esri.comesri.com

GIS Software for Mapping and Spatial Analytics | Esri

Esri’s GIS software is the most powerful mapping & spatial analytics technology available. Learn about Esri’s geospatial mapping software for business and go...

Description truncated.

Title Length53 chars

Recommended: 50-60 chars

Description Length166 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

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Crawlability

Sitemap

Type: standard

robots.txt

87 rules

Sitemap reference found

Sponsored

Security Score

76%Good

Interactive

HTTPS

No WAF

301d

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

Valid From

11.12.2025

Valid Until

10.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.esri.comesri.com

SHA-256 Fingerprint

59:57:1C:6C:07:43:07:BD:8B:21:4D:B1:E6:41:8B:E8:77:39:42:5D...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

content-encoding

📦 Gzip(gzip)

content-length

11005

content-security-policy

frame-ancestors learn.arcgis.com *.esri.com pro.arcgis.com d...

content-type

text/html;charset=utf-8

date

Thu, 12 Feb 2026 18:58:24 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

mxa-00151a02.gslb.pphosted.com

mxb-00151a02.gslb.pphosted.com

Domain Information

esri.com

Domain Age

35y 10m

Created

18.04.1990

Expires

19.04.2026

Last Updated

18.12.2025

Registrar

MarkMonitor Inc.

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Typography & Readability

Times New Roman + Helvetica Neue

46/100

Readability

/30

5/40

13px · LH 1.00

Hierarchy

/20

18/25

3.69x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Times New Roman

Serif48px

Body Font

Helvetica Neue

Sans13px

Contrast Ratio

Reading Comfort

~40 CPL

Needs attention

48px

13px

20px

13px

❌ Critical: 13px body text is too small. Increase to at least 14px.

⚠️ Tight line spacing (1.00). Consider 1.4-1.6 for better readability.

✅ Strong hierarchy: Headlines are 3.7x larger than body text.

✅ Good performance: Using 2 font families keeps load times fast.

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 27 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

10 Tools Detected

Enterprise

CRM Systems

SalesforceEnterprise

Customer Relationship Management platforms

Marketing Automation

MarketoEnterprise

Email marketing and automation platforms

Behavior Analytics

MouseflowSMB

FathomSMB

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

LinkedIn AdsEnterprise

AdRollMid-Market

Ad platforms and retargeting pixels

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

28 Resources

Scripts

Styles

Async

Defer

Top Script Sources

assets.adobedtm.com(8)local(3)munchkin.marketo.net(2)connect.facebook.net(1)s.adroll.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube

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Last analyzed: 12 Feb 2026 at 18:59

Historical Analysis & Change Tracking