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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arcpublishing.com

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

Export

arcpublishing.com

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

3.174.113.112

Server Location

🇫🇮 Helsinki, Finland

ASN

AS16509

Organization

AWS CloudFront (GLOBAL)

Server

OpenResty

CDN

CloudFront

Nameservers

ns-412.awsdns-51.com.ns-649.awsdns-17.net.ns-1330.awsdns-38.org.ns-1633.awsdns-12.co.uk.

Performance

Page Speed

952 KB

73 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

Frontend

Framework

React

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Amazon Web Services (AWS)

CDN

CloudFront

Detected API Sources

https://cdn.id5-sync.com/api/1...

Technology Stack

11 Technologies Detected

Analytics

CSS Frameworks

Frameworks

Other

Tag Managers

Web Servers

Customer Support

Marketing

SEO Analysis

B76/100

arcpublishing.comarcpublishing.com

Arc XP | The Platform and CMS for Media Companies

Explore Arc XP, a hybrid CMS purpose-built for media companies. Innovate and grow with AI-powered features and built-in tools for monetization and engagement.

Title Length49 chars

Recommended: 50-60 chars

Description Length158 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (19/29)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

46%Poor

Interactive

HTTPS

WAF

37d

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

Valid From

29.12.2025

Valid Until

29.03.2026

Subject Alternative Names (9)

arcmarketing.web.arc-cdn.netdesign.arcpublishing.comdocs.arcxp.comhelp.arcxp.comideas.arcpublishing.comstatus.arcpublishing.comsupport.arcpublishing.comwww.arcpublishing.com+1 more

SHA-256 Fingerprint

86:A9:6C:E1:CB:CC:B4:33:98:72:F4:8A:F5:D1:E4:1D:70:4E:D9:D2...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

akamai-true-ttl

-1

cache-control

🟡 60s(private, max-age=60)

content-encoding

📦 Gzip(gzip)

content-length

23911

content-security-policy

upgrade-insecure-requests

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mxa-001a3c01.gslb.pphosted.com

mxb-001a3c01.gslb.pphosted.com

Domain Information

arcpublishing.com

Domain Age

16y 6m

Created

05.08.2009

Expires

05.08.2026

Last Updated

01.08.2025

Registrar

CSC Corporate Domains, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

Typography & Readability

Aeonik + Messina Sans

85/100

Readability

/30

40/40

18px · LH 1.50

Hierarchy

/20

25/25

2.28x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

10/20

3 fonts

Heading Font

Aeonik

Sans41px

Body Font

Messina Sans

Sans18px

Contrast Ratio

Reading Comfort

~32 CPL

Needs attention

41px

24px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.3x larger than body text.

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 33 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

5 Tools Detected

Enterprise

CRM Systems

HubSpotMid-Market

Customer Relationship Management platforms

Behavior Analytics

Microsoft ClarityFree

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(2)local(2)arcmarketing.video-player.arcpublishing.com(2)gstatic.com(1)cdn.id5-sync.com(1)

Website Identity

Sponsored

Last analyzed: 20 Feb 2026 at 06:01

Historical Analysis & Change Tracking