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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roblox.com

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

Export

roblox.com

$Desktop screenshot of roblox.com$

$Mobile screenshot of roblox.com$

Mobile

Sponsored

Hosting Provider

Roblox Corperation

IP Address

128.116.21.3

Server Location

🇸🇬 Singapore, Singapore

ASN

AS22697

Organization

Roblox Corperation

Server

website

Nameservers

ns04.rbxinfra.net.dns1.p06.nsone.net.dns2.p06.nsone.net.dns3.p06.nsone.net.+4 more

Performance

Page Speed

3 KB

170 requests

Image Optimization

WebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

React

Infrastructure

Hosting

Roblox Corperation

Technology Stack

5 Technologies Detected

Frameworks

Libraries

CSS Frameworks

Customer Support

SEO Analysis

D55/100

roblox.comroblox.com

Roblox

Roblox is the ultimate virtual universe that lets you create, share experiences with friends, and be anything you can imagine. Join millions of people and di...

Description truncated.

Title Length6 chars

Recommended: 50-60 chars

Description Length239 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

31 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

45%Poor

Critical / Transactional

HTTPS

No WAF

281d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

20.11.2025

Valid Until

20.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

roblox.com*.roblox.com

SHA-256 Fingerprint

49:FC:97:88:08:04:89:5A:8D:C3:05:1A:29:CD:D3:42:71:5A:EA:51...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-store, must-revalidate, no-cache)

content-encoding

⚡ Brotli(br)

content-security-policy

report-uri https://metrics.roblox.com/v1/csp/report?type=enf...

content-type

text/html; charset=utf-8

cross-origin-opener-policy

same-origin-allow-popups

date

Thu, 12 Feb 2026 19:28:38 GMT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (5)

alt4.aspmx.l.google.com

alt2.aspmx.l.google.com

alt1.aspmx.l.google.com

alt3.aspmx.l.google.com

+1 more

Domain Information

roblox.com

Domain Age

22 years

Created

30.01.2004

Expires

30.01.2027

Last Updated

30.08.2025

Registrar

MarkMonitor Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Typography & Readability

Helvetica Neue

34/100

Readability

/30

20/40

12px · LH 1.50

Hierarchy

/20

8/25

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Helvetica Neue

Sans

Body Font

Helvetica Neue

Sans12px

Contrast Ratio

Reading Comfort

~64 CPL

Optimal (45–75)

20px

12px

❌ Critical: 12px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

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

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

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

✅ Optimal line length: ~64 characters per line is comfortable to read.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

js.rbxcdn.com(17)local(1)roblox.com(1)apis.roblox.com(1)

Website Identity

X (Twitter)

Sponsored

Last analyzed: 12 Feb 2026 at 19:28

Historical Analysis & Change Tracking