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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skylum.com

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

Export

skylum.com

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.26.5.191

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

dahlia.ns.cloudflare.com.skip.ns.cloudflare.com.

Performance

Page Speed

554 KB

97 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

17 Technologies Detected

Advertising

Pinterest Tag TikTok Pixel Microsoft Advertising Taboola Outbrain

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

CSS Frameworks

Libraries

UI Components

Icon Libraries

Tag Managers

Reviews

CDN

SEO Analysis

B78/100

skylum.comskylum.com

Skylum: Your Gateway to Creative Imaging

Discover the next level of photo editing with Skylum's innovative software solutions. Whether you're a seasoned professional or an amateur enthusiast, our po...

Description truncated.

Title Length40 chars

Recommended: 50-60 chars

Description Length210 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

22 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

36%Critical

Interactive

HTTPS

WAF

44d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

05.01.2026

Valid Until

05.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

skylum.com*.skylum.com

SHA-256 Fingerprint

D9:C6:F2:89:67:F7:08:33:B0:10:D3:ED:AE:FD:94:2D:62:FF:F4:23...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

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

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9d0bac298d079c0a-FRA

commit-sha

82880907757a230920a519e4be319f93c9d75609

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

alt4.aspmx.l.google.com

alt3.aspmx.l.google.com

alt2.aspmx.l.google.com

alt1.aspmx.l.google.com

+1 more

Domain Information

skylum.com

Domain Age

14y 2m

Created

24.12.2011

Expires

24.12.2027

Last Updated

16.10.2025

Registrar

Name.com, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Typography & Readability

Helvetica + sans-serif

48/100

Readability

/30

22/40

14px · LH --

Hierarchy

/20

25/25

4.29x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Helvetica

Sans60px

Body Font

sans-serif

Sans14px

Contrast Ratio

Reading Comfort

~48 CPL

Optimal (45–75)

60px

36px

30px

14px

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

✅ Strong hierarchy: Headlines are 4.3x larger than body text.

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

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

✅ Optimal line length: ~48 characters per line is comfortable to read.

⚠️ Cramped layout: 44 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

13 Tools Detected

Enterprise

Behavior Analytics

Microsoft ClarityFree

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Pinterest AdsMid-Market

TikTok PixelMid-Market

Microsoft AdsEnterprise

TaboolaMid-Market

AdRollMid-Market

Ad platforms and retargeting pixels

Privacy & Cookies

CookiebotMid-Market

Cookie consent and privacy compliance tools

Social Media

Facebook SDKFree

Social widgets and sharing tools

Affiliate & Partnerships

ImpactEnterprise

Affiliate networks and partner tracking

Reviews & Social Proof

TrustpilotMid-Market

Customer reviews and testimonials

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

analytics.tiktok.com(3)connect.facebook.net(3)s.pinimg.com(2)scripts.clarity.ms(1)amplify.outbrain.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn Pinterest

Sponsored

Last analyzed: 20 Feb 2026 at 05:41

Historical Analysis & Change Tracking