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

postimages.org

https://postimages.org· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

postimages.org

Mobile

Sponsored

Hosting Provider

Global Managed Hosting Inc

IP Address

185.221.219.49

Server Location

🇳🇱 Amsterdam, Netherlands

ASN

AS63023

Organization

Global Managed Hosting Inc

Server

Nginx

CDN

Cloudflare

WAF

Cloudflare

Nameservers

naomi.ns.cloudflare.com.igor.ns.cloudflare.com.

Performance

Page Speed

2 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Global Managed Hosting Inc

CDN

Cloudflare

Technology Stack

2 Technologies Detected

CSS Frameworks

Tailwind CSS

Web Servers

Nginx

SEO Analysis

B70/100

postimages.orgpostimages.org

Postimages — free image hosting / image upload

Provides free image uploading and hosting integration for forums. Free picture hosting and photo sharing for websites and blogs.

Title Length46 chars

Recommended: 50-60 chars

Description Length128 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

Upgrade to view details

Sponsored

Security Score

46%Poor

Interactive

HTTPS

No WAF

38d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

23.12.2025

Valid Until

23.03.2026

Subject Alternative Names (3)

api.postimages.orgpostimages.orgwww.postimages.org

SHA-256 Fingerprint

EA:5C:2B:BC:51:16:4F:2A:64:79:80:F5:6C:66:3D:02:97:FC:7A:9B...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Fri, 13 Feb 2026 11:42:27 GMT

server

nginx

strict-transport-security

max-age=63072000; includeSubDomains; preload

vary

Accept-Encoding

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

postimages.org

Domain Age

15y 1m

Created

27.12.2010

Expires

27.12.2026

Last Updated

02.12.2025

Registrar

NameCheap, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

system-ui

84/100

Readability

/30

40/40

24px · LH 1.50

Hierarchy

/20

16/25

1.67x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

system-ui

Sans40px

Body Font

system-ui

Sans24px

Contrast Ratio

Reading Comfort

Single Font Family

center aligned

40px

28px

24px

✅ Excellent readability: 24px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Good hierarchy: Clear distinction between headlines and body text.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

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

⚠️ Cramped layout: 16 elements lack adequate spacing.

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

2 Resources

Scripts

Styles

Async

Defer

Top Script Sources

postimgs.org(1)

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Last analyzed: 13 Feb 2026 at 11:42

Historical Analysis & Change Tracking