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

cloudimg.io

https://cloudimg.io· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

cloudimg.io

Sponsored

Hosting Provider

Fastly, Inc.

IP Address

151.101.122.132

Server Location

🇫🇷 Paris, France

ASN

AS54113

Organization

Fastly, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns-977.awsdns-58.net.ns-1372.awsdns-43.org.ns-1566.awsdns-03.co.uk.ns-243.awsdns-30.com.

Performance

Page Speed

3.6 MB

102 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Fastly, Inc.

CDN

Cloudflare

Detected API Sources

https://cdn.prod.website-files...

Technology Stack

11 Technologies Detected

Analytics

Libraries

Other

CSS Frameworks

Fonts

Tag Managers

Marketing

Customer Support

Advertising

CDN

SEO Analysis

B72/100

cloudimg.iocloudimg.io

Image CDN: Resize, Compress and Accelerate • Cloudimage

Cloudimage converts to the best format, optimizes the size quality ratio and delivers your web images to your customers through our rocket fast image CDN net...

Description truncated.

Title Length55 chars

Recommended: 50-60 chars

Description Length172 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

18 URLs

robots.txt

1 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

71%Good

Interactive

HTTPS

WAF

51d

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

10.01.2026

Valid Until

10.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.cloudimage.io

SHA-256 Fingerprint

1D:65:E2:34:E8:5F:3F:15:F7:9D:8C:83:3D:7F:19:AB:2D:B8:0E:01...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9cf8fa8c682d65ca-FRA

content-encoding

📦 Gzip(gzip)

content-language

content-security-policy

frame-ancestors 'self'

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Amazon SES

Score

SPF

DKIM

DMARC

MX Records (1)

inbound-smtp.us-east-1.amazonaws.com

Domain Information

cloudimg.io

Domain Age

11y 5m

Created

27.08.2014

Expires

27.08.2028

Last Updated

06.08.2025

Registrar

OVH SAS

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Typography & Readability

Inter + sans-serif

56/100

Readability

/30

32/40

18px · LH 1.33

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Inter

Sans

Body Font

sans-serif

Sans18px

Contrast Ratio

Reading Comfort

~91 CPL

Needs attention

20px

18px

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

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

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

✅ Protected text on images: Using gradient for readability.

⚠️ Wide lines: ~91 chars/line. Consider max-width for better reading flow.

⚠️ Cramped layout: 144 elements lack adequate spacing.

GGoogle Fonts

Business & Marketing Stack

7 Tools Detected

Enterprise

CRM Systems

HubSpotMid-Market

Customer Relationship Management platforms

Customer Support

ZendeskEnterprise

Live chat and helpdesk tools

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Twitter/X AdsMid-Market

Ad platforms and retargeting pixels

Privacy & Cookies

CookiebotMid-Market

Cookie consent and privacy compliance tools

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(4)cdn.prod.website-files.com(4)cdn.weglot.com(2)js-eu1.hsadspixel.net(1)js-eu1.hs-banner.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn GitHub

Sponsored

Last analyzed: 17 Feb 2026 at 23:14

Historical Analysis & Change Tracking