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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gdconf.com

https://gdconf.com· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

gdconf.com

Sponsored

Hosting Provider

Fastly, Inc.

IP Address

151.101.2.133

Server Location

🇨🇦 Montreal, Canada

ASN

AS54113

Organization

Fastly, Inc.

CDN

Fastly

Nameservers

ns1.ubmdns.com.ns2.ubmdns.com.

Performance

Page Speed

2.9 MB

76 requests

Image Optimization

Lazy Loadimgix

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Fastly, Inc.

CDN

Fastly

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

14 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel PostHog Sentry

Icon Libraries

Font Awesome Material Icons

CSS Frameworks

Fonts

Tag Managers

Advertising

Other

Libraries

CDN

SEO Analysis

C64/100

gdconf.comgdconf.com

GDC Festival of Gaming

The GDC Festival of Gaming is where the entire B2B games industry comes together. From design and code to publishing, marketing, and investment, it's a place...

Description truncated.

Title Length22 chars

Recommended: 50-60 chars

Description Length220 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (14/24)

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

174 URLs

robots.txt

2 rules

Sitemap reference found

Allows all crawlers

Sponsored

A+

Security Score

93%Excellent

Static / Informational

HTTPS

No WAF

53d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

15.01.2026

Valid Until

15.04.2026

Subject Alternative Names (1)

gdconf.com

SHA-256 Fingerprint

51:7F:2A:17:19:36:47:9F:35:25:28:8F:D3:6C:60:AE:20:09:C0:0C...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

19295

cache-control

🟡 60s(public, max-age=60, must-revalidate)

content-encoding

📦 Gzip(gzip)

content-language

content-length

153111

Good Warning Issue

Email Infrastructure

Mimecast

Score

SPF

DKIM

DMARC

MX Records (2)

us-smtp-inbound-2.mimecast.com

us-smtp-inbound-1.mimecast.com

Domain Information

gdconf.com

Domain Age

27y 8m

Created

01.07.1998

Expires

30.06.2026

Last Updated

01.07.2025

Registrar

SafeNames Ltd.

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

Typography & Readability

Kensington + system-ui

40/100

Readability

/30

32/40

14px · LH 1.50

Hierarchy

/20

8/25

WCAG

/25

5/15

Contrast: undefined

Performance

/25

17/20

System fonts

Heading Font

Kensington

Sans

Body Font

system-ui

Sans14px

Contrast Ratio

Reading Comfort

~104 CPL

Needs attention

56px

18px

14px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

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

⚠️ Risky: Text appears on background images without overlay protection.

⚠️ Wide lines: ~104 chars/line. Consider max-width for better reading flow.

⚠️ Cramped layout: 78 elements lack adequate spacing.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

11 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

Microsoft ClarityFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

TikTok PixelMid-Market

Ad platforms and retargeting pixels

Privacy & Cookies

OneTrustEnterprise

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Social Media

Facebook SDKFree

Social widgets and sharing tools

A/B Testing & Optimization

VWO (Visual Website Optimizer)Mid-Market

KameleoonEnterprise

Experimentation and conversion optimization

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(5)local(4)static.iris.informa.com(3)connect.facebook.net(3)transcend-cdn.com(2)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube TikTok

Sponsored

Last analyzed: 20 Feb 2026 at 05:57

Historical Analysis & Change Tracking