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

raceroster.com

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

Export

raceroster.com

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

13.33.235.97

Server Location

🇺🇸 New York, United States

ASN

AS16509

Organization

AWS CloudFront (GLOBAL)

Server

Nginx

CDN

CloudFront

Nameservers

ns-1103.awsdns-09.org.ns-1939.awsdns-50.co.uk.ns-218.awsdns-27.com.ns-834.awsdns-40.net.

Performance

Page Speed

2.9 MB

33 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

jQuery

Styling

Tailwind CSS

CMS

WordPress

Infrastructure

Hosting

Amazon Web Services (AWS)

CDN

CloudFront

Technology Stack

9 Technologies Detected

Analytics

Libraries

CSS Frameworks

Icon Libraries

Fonts

Tag Managers

Web Servers

Plugins

SEO Analysis

A82/100

raceroster.comraceroster.com

Race Roster - Create a race event with our free event registration ...

A comprehensive set of tools designed to meet the unique needs of event organizers, timers, and fundraising coordinators everywhere.

Title truncated.

Title Length85 chars

Recommended: 50-60 chars

Description Length132 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (24/27)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

robots.txt

29 rules

Sitemap reference found

Sponsored

Security Score

86%Very Good

Interactive

HTTPS

No WAF

280d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

30.10.2025

Valid Until

27.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.raceroster.comraceroster.com

SHA-256 Fingerprint

A6:16:9E:0D:C4:20:D4:68:29:26:35:ED:A3:48:F6:91:45:9B:AD:3B...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-security-policy

default-src 'self'; script-src 'strict-dynamic' 'nonce-jmWmi...

content-type

text/html; charset=UTF-8

date

Fri, 20 Feb 2026 10:40:12 GMT

permissions-policy

accelerometer=(), encrypted-media=(), gyroscope=(), magnetom...

referrer-policy

strict-origin-when-cross-origin

report-to

{"group":"default","max_age":86400,"endpoints":[{"url":"http...

Good Warning Issue

Email Infrastructure

Mimecast

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

de-smtp-inbound-2.mimecast.com

de-smtp-inbound-1.mimecast.com

Domain Information

raceroster.com

Domain Age

14y 5m

Created

21.09.2011

Expires

21.09.2026

Last Updated

22.09.2025

Registrar

GoDaddy.com, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Data Protection Officer mentioned

Typography & Readability

Work Sans + sans-serif

43/100

Readability

/30

20/40

12px · LH 1.40

Hierarchy

/20

25/25

4.33x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Work Sans

Sans52px

Body Font

sans-serif

Sans12px

Contrast Ratio

Reading Comfort

~36 CPL

Needs attention

52px

24px

12px

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

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 4.3x 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.

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

GGoogle Fonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

10 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(3)raceroster.com(3)gstatic.com(1)google.com(1)

Website Identity

Facebook X (Twitter)Instagram

Sponsored

Last analyzed: 20 Feb 2026 at 10:40

Historical Analysis & Change Tracking