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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skitterphoto.com

https://skitterphoto.com· First analyzed 15 Feb 2026· Updated 15 Feb 2026

Export

skitterphoto.com

Mobile

Sponsored

Hosting Provider

Leaseweb

leaseweb.com

IP Address

178.162.201.225

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS28753

Organization

Leaseweb Deutschland GmbH

Server

Nginx

Nameservers

ns02.hostnet.nl.ns01.hostnet.nl.

Performance

Page Speed

659 KB

21 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Leaseweb

Technology Stack

13 Technologies Detected

Advertising

Google Ads Google AdSense Criteo Outbrain

Analytics

Google Analytics

Facebook Pixel Segment

Libraries

CSS Frameworks

Icon Libraries

Fonts

Payments

Web Servers

SEO Analysis

D41/100

skitterphoto.comskitterphoto.com

Skitterphoto: a place to find, show and share public domain images.

Visit Skitterphoto to download free photos. No payment, no login required. Do you take pictures? Join us and start uploading your public domain photos today.

Title Length67 chars

Recommended: 50-60 chars

Description Length157 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (49/49)

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

7,378 URLs

robots.txt

2 rules

Allows all crawlers

Sponsored

Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

54d

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

10.01.2026

Valid Until

10.04.2026

Subject Alternative Names (2)

skitterphoto.comwww.skitterphoto.com

SHA-256 Fingerprint

1E:D5:E0:49:84:80:0E:11:49:2A:09:6B:11:B9:5C:43:1E:E3:85:BB...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache, private)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Sun, 15 Feb 2026 04:55:42 GMT

etag

W/"992f2f5b62908fc1d937bc161a9d6040"

server

nginx

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (4)

mx3.mailpod13-cph3.g1i.hostnet.nl

mx4.mailpod13-cph3.g1i.hostnet.nl

mx1.mailpod13-cph3.g1i.hostnet.nl

mx2.mailpod13-cph3.g1i.hostnet.nl

Domain Information

skitterphoto.com

Domain Age

11y 10m

Created

30.03.2014

Expires

30.03.2026

Last Updated

01.03.2025

Registrar

Tucows Domains Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner

Quantcast Choice

GDPR Indicators

Cookie consent banner detected

CMP: Quantcast Choice

Legitimate interest basis mentioned

Typography & Readability

Ubuntu + Arial

81/100

Readability

/30

40/40

16px · LH 1.40

Hierarchy

/20

18/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Ubuntu

Sans32px

Body Font

Arial

Sans16px

Contrast Ratio

Reading Comfort

~38 CPL

Needs attention

32px

14px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

✅ Good performance: Using 2 font families keeps load times fast.

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

GGoogle Fonts

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

12 Resources

Scripts

Styles

Async

Defer

Top Script Sources

connect.facebook.net(2)pagead2.googlesyndication.com(2)fundingchoicesmessages.google.com(2)skitterphoto.com(1)ajax.googleapis.com(1)

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Last analyzed: 15 Feb 2026 at 04:56

Historical Analysis & Change Tracking