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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datadoghq.com

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

Export

datadoghq.com

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

18.165.140.73

Server Location

🇫🇮 Helsinki, Finland

ASN

AS16509

Organization

AWS CloudFront (GLOBAL)

Server

AmazonS3

CDN

CloudFront

Nameservers

ns-442.awsdns-55.com.ns-889.awsdns-47.net.ns-1169.awsdns-18.org.ns-1602.awsdns-08.co.uk.

Performance

Page Speed

2.3 MB

144 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

Alpine.js

Styling

Tailwind CSS

Infrastructure

Hosting

Amazon Web Services (AWS)

CDN

CloudFront

Technology Stack

13 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Segment Microsoft Clarity

Advertising

Twitter Ads LinkedIn Ads Microsoft Advertising

CSS Frameworks

Frameworks

Tag Managers

CDN

SEO Analysis

A84/100

datadoghq.comdatadoghq.com

Cloud Monitoring as a Service | Datadog

See inside any stack, any app, at any scale, anywhere.

Title Length39 chars

Recommended: 50-60 chars

Description Length56 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

14 URLs

robots.txt

13 rules

Sitemap reference found

Sponsored

Security Score

86%Very Good

Interactive

HTTPS

WAF

137d

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

02.07.2025

Valid Until

02.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.datadoghq.comdatadoghq.com

SHA-256 Fingerprint

F9:A9:E4:78:D2:A8:8E:07:B9:ED:31:2C:A7:49:71:A7:35:84:58:A2...

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟡 0s(public, proxy-revalidate, max-age=0)

content-encoding

⚡ Brotli(br)

content-security-policy

frame-ancestors 'self' https://onlinexperiences.com https://...

content-type

text/html; charset=utf-8

date

Sun, 15 Feb 2026 02:03:38 GMT

etag

W/"a94188329aa1fd2d9efd1a66b35e4474"

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (7)

alt1.aspmx.l.google.com

alt2.aspmx.l.google.com

aspmx4.googlemail.com

aspmx5.googlemail.com

+3 more

Domain Information

datadoghq.com

Domain Age

15y 7m

Created

09.07.2010

Expires

09.07.2026

Last Updated

09.06.2025

Registrar

NameCheap, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

TrustArc

Cookie Consent Banner

TrustArc

GDPR Indicators

Cookie consent banner detected

CMP: TrustArc

Data Protection Officer mentioned

Typography & Readability

Helvetica

66/100

Readability

/30

25/40

28px · LH 1.14

Hierarchy

/20

18/25

2.43x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Helvetica

Sans68px

Body Font

Helvetica

Sans28px

Contrast Ratio

Reading Comfort

~31 CPL

Needs attention

68px

36px

28px

✅ Excellent readability: 28px body text is ideal for all devices.

⚠️ Tight line spacing (1.14). Consider 1.4-1.6 for better readability.

✅ Strong hierarchy: Headlines are 2.4x larger than body text.

✅ Good performance: Using 1 font families keeps load times fast.

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

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

Buy on MyFonts

Business & Marketing Stack

11 Tools Detected

Enterprise

Marketing Automation

MarketoEnterprise

Email marketing and automation platforms

Behavior Analytics

Microsoft ClarityFree

Google Tag ManagerFree

Google AnalyticsFree

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

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

25 Resources

Scripts

Styles

Async

Defer

Top Script Sources

transcend-cdn.com(2)connect.facebook.net(2)googletagmanager.com(2)nexus.ensighten.com(1)clarity.ms(1)

Website Identity

datadoghq.com

15 years old

NameCheap, Inc.📧 Google Workspace

Social Profiles

X (Twitter)Instagram LinkedIn YouTube

Sponsored

Last analyzed: 15 Feb 2026 at 02:03

Historical Analysis & Change Tracking