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

endnote.com

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

Export

endnote.com

Sponsored

Hosting Provider

Pantheon

pantheon.io

IP Address

23.185.0.4

Server Location

🇺🇸 San Francisco, United States

ASN

AS54113

Organization

Pantheon

Server

Nginx

CDN

Fastly

Nameservers

ns-1367.awsdns-42.org.ns-1661.awsdns-15.co.uk.ns-340.awsdns-42.com.ns-1017.awsdns-63.net.

Performance

Page Speed

1.8 MB

94 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

jQuery

Styling

Tailwind CSS

CMS

WordPressv6.9

Infrastructure

Hosting

Pantheon

CDN

Fastly

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

16 Technologies Detected

Advertising

Twitter Ads LinkedIn Ads Microsoft Advertising

Plugins

Wp Views

Pantheon Wordpress Edge Integrations

Analytics

Libraries

UI Components

CSS Frameworks

Icon Libraries

Fonts

Tag Managers

Other

Web Servers

SEO Analysis

A88/100

endnote.comendnote.com

EndNote - The Best Citation & Reference Management Tool

EndNote is the reference manager that helps you save time formatting citations, so you can focus on your research.

Title Length55 chars

Recommended: 50-60 chars

Description Length114 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

18 URLs

robots.txt

322 rules

Sitemap reference found

Sponsored

Security Score

81%Very Good

Interactive

HTTPS

No WAF

51d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

12.01.2026

Valid Until

12.04.2026

Subject Alternative Names (2)

endnote.comwww.endnote.com

SHA-256 Fingerprint

5B:EB:B0:FF:4F:DB:3E:EE:24:4B:52:02:9F:35:DD:FA:B4:E8:38:C2...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

cache-control

🔵 1 Week(public, max-age=604800)

content-encoding

📦 Gzip(gzip)

content-security-policy

script-src 'self' 'unsafe-inline' 'unsafe-eval' data: blob: ...

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Amazon SES

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

inbound-smtp.us-west-2.amazonaws.com

Domain Information

endnote.com

Domain Age

29y 2m

Created

07.12.1996

Expires

06.12.2026

Last Updated

04.11.2025

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

Clarivate Semibold + Clarivate Regular

84/100

Readability

/30

40/40

20px · LH 1.50

Hierarchy

/20

21/25

2.7x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Clarivate Semibold

Sans54px

Body Font

Clarivate Regular

Sans20px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

54px

36px

24px

20px

✅ Excellent readability: 20px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.7x larger than body text.

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

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

✅ Protected text on images: Using gradient for readability.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

9 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Twitter/X AdsMid-Market

LinkedIn AdsEnterprise

Microsoft AdsEnterprise

Reddit PixelMid-Market

Ad platforms and retargeting pixels

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

A/B Testing & Optimization

VWO (Visual Website Optimizer)Mid-Market

Experimentation and conversion optimization

Sponsored

Scripts & Styles

29 Resources

Scripts

Styles

Async

Defer

Top Script Sources

endnote.com(5)bat.bing.com(4)embed.famewall.io(2)googletagmanager.com(2)app.gatedcontent.com(2)

Website Identity

endnote.com

29 years old

MarkMonitor Inc.📧 Amazon SES

Social Profiles

X (Twitter)YouTube

Sponsored

Last analyzed: 19 Feb 2026 at 22:50

Historical Analysis & Change Tracking