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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ipinfo.io

https://ipinfo.io· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

ipinfo.io

Mobile

Sponsored

Hosting Provider

Google Cloud Platform

cloud.google.com

IP Address

34.117.59.81

Server Location

🇺🇸 Kansas City, United States

ASN

AS396982

Organization

Google Cloud

Nameservers

ns-cloud-e1.googledomains.com.ns-cloud-e2.googledomains.com.ns-cloud-e3.googledomains.com.ns-cloud-e4.googledomains.com.

Performance

Page Speed

167 KB

187 requests

Image Optimization

Lazy LoadWebP

0–49

50–89

90–100

Architecture Stack

Hybrid

⚡ SSG

Frontend

Framework

Next.js

Styling

Tailwind CSS

CMS

HubSpot CMS

Infrastructure

Hosting

Google Cloud Platform

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

13 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity PostHog

Advertising

Twitter Ads LinkedIn Ads Microsoft Advertising

Meta Frameworks

Next.js

CSS Frameworks

Tailwind CSS

Fonts

Adobe Fonts (Typekit)

Tag Managers

Google Tag Manager

Marketing

HubSpot

SEO Analysis

A+90/100

ipinfo.ioipinfo.io

IP Data Intelligence for Developers & Enterprises | IPinfo

IPinfo, the trusted global leader in IP address data and intelligence. Powering applications and security solutions for developers and businesses.

Title Length58 chars

Recommended: 50-60 chars

Description Length146 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

705 URLs

robots.txt

25 rules

Sitemap reference found

Sponsored

Security Score

46%Poor

Interactive

HTTPS

No WAF

72d

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+H3

Valid From

02.02.2026

Valid Until

03.05.2026

Subject Alternative Names (3)

*.api.ipinfo.io*.ipinfo.ioipinfo.io

SHA-256 Fingerprint

B0:81:7B:00:5F:B0:92:5F:B1:AD:D8:F3:12:C4:48:25:52:CA:DD:E7...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin

age

alt-svc

h3=":443"; ma=2592000,h3-29=":443"; ma=2592000

cache-control

🟡 1 Hours(public,max-age=3600,s-maxage=60,stale-while-revalidate)

content-encoding

📦 Gzip(gzip)

content-length

26848

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

alt1.aspmx.l.google.com

alt4.aspmx.l.google.com

alt2.aspmx.l.google.com

alt3.aspmx.l.google.com

+1 more

Domain Information

ipinfo.io

Domain Age

12y 10m

Created

23.04.2013

Expires

23.04.2028

Last Updated

30.03.2023

Registrar

101domain GRS Limited

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Typography & Readability

-apple-system

68/100

Readability

/30

32/40

21px · LH 1.33

Hierarchy

/20

25/25

2.57x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

-apple-system

Sans54px

Body Font

-apple-system

Sans21px

Contrast Ratio

Reading Comfort

~361 CPL

Needs attention

54px

21px

14px

21px

✅ Excellent readability: 21px body text is ideal for all devices.

✅ Strong hierarchy: Headlines are 2.6x larger than body text.

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

✅ Consistent design: Single font family with weight variations is a modern best practice.

✅ Protected text on images: Using gradient for readability.

❌ Very long lines: ~361 chars/line causes eye strain. Use max-width: 65ch.

AAdobe Fonts Buy on MyFonts

Business & Marketing Stack

17 Tools Detected

Enterprise

CRM Systems

HubSpotMid-Market

Customer Relationship Management platforms

Behavior Analytics

Microsoft ClarityFree

Google Tag ManagerFree

Google AnalyticsFree

HotjarMid-Market

Matomo (Piwik)Mid-Market

KissmetricsMid-Market

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

LinkedIn AdsEnterprise

Microsoft AdsEnterprise

Reddit PixelMid-Market

Quora PixelMid-Market

Ad platforms and retargeting pixels

Privacy & Cookies

CookiebotMid-Market

TermlySMB

Cookie consent and privacy compliance tools

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

A/B Testing & Optimization

ConvertMid-Market

Experimentation and conversion optimization

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

snap.licdn.com(3)bat.bing.com(3)googletagmanager.com(3)connect.facebook.net(2)js.hs-analytics.net(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn GitHub Bluesky

Sponsored

Last analyzed: 19 Feb 2026 at 19:57

Historical Analysis & Change Tracking