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

presscustomizr.com

https://presscustomizr.com· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

presscustomizr.com

Mobile

Sponsored

Hosting Provider

PlanetHoster

IP Address

199.16.131.16

Server Location

🇨🇦 Montreal, Canada

ASN

AS53589

Organization

PlanetHoster

Server

Apache

Nameservers

hybrid1343-1.ca.ns.planethoster.net.hybrid1343.ca.ns.planethoster.net.

Performance

Page Speed

20 KB

4 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

Customizr Prov2.4.24

by Press Customizr

View Theme

Technology Stack

19 Technologies Detected

Plugins

Nimble Builder

Easy Digital Downloads

Edd Recurring Nimble Builder Pro Perfmatters

Libraries

Analytics

Microsoft Clarity Segment

UI Components

Other

CSS Frameworks

Icon Libraries

Fonts

Web Servers

Security

SEO Analysis

A+94/100

presscustomizr.compresscustomizr.com

Press Customizr | WordPress themes and plugins for pro

Press Customizr designs high quality WordPress themes and plugins that allow 200K+ businesses and individuals to build a professional web presence.

Title Length54 chars

Recommended: 50-60 chars

Description Length147 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

3 URLs

robots.txt

5 rules

Sitemap reference found

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

77d

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

31.01.2026

Valid Until

01.05.2026

Subject Alternative Names (2)

*.presscustomizr.compresscustomizr.com

SHA-256 Fingerprint

71:6A:48:4A:53:BD:FD:B2:78:56:8E:46:FC:F4:B0:D1:BF:DB:10:BE...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🟡 0s(max-age=0)

content-encoding

📦 Gzip(gzip)

content-length

52326

content-type

text/html; charset=UTF-8

date

Fri, 13 Feb 2026 00:28:18 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mail.presscustomizr.com

Domain Information

presscustomizr.com

Domain Age

11y 2m

Created

05.12.2014

Expires

05.12.2026

Last Updated

15.12.2025

Registrar

GoDaddy.com, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Typography & Readability

Montserrat + Roboto

86/100

Readability

/30

40/40

18px · LH 1.50

Hierarchy

/20

18/25

2.11x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Montserrat

Sans38px

Body Font

Roboto

Sans18px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

38px

30px

22px

18px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.1x larger than body text.

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

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

⚠️ Cramped layout: 27 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

1 Resources

Scripts

Styles

Async

Defer

Top Script Sources

presscustomizr.com(1)

Website Identity

Facebook X (Twitter)GitHub

Sponsored

Last analyzed: 13 Feb 2026 at 00:29

Historical Analysis & Change Tracking