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

pons.com

https://pons.com· First analyzed 18 Feb 2026· Updated 18 Feb 2026

Export

pons.com

Mobile

Sponsored

Hosting Provider

Google Cloud Platform

cloud.google.com

IP Address

34.91.145.21

Server Location

🇳🇱 Groningen, Netherlands

ASN

AS396982

Organization

Google Cloud (europe-west4)

Nameservers

ns-cloud-c4.googledomains.com.ns-cloud-c1.googledomains.com.ns-cloud-c3.googledomains.com.ns-cloud-c2.googledomains.com.

Performance

Page Speed

946 KB

148 requests

Image Optimization

Lazy LoadWebP

0–49

50–89

90–100

Architecture Stack

Hybrid

⚙️ SSR

Frontend

Framework

Astro

Styling

Tailwind CSS

Infrastructure

Hosting

Google Cloud Platform

Progressive Web App

Service Worker

Technology Stack

16 Technologies Detected

Analytics

Advertising

Google Ads Criteo Taboola Outbrain

Social

Meta Frameworks

CSS Frameworks

Email Marketing

Customer Support

SEO Analysis

B76/100

pons.compons.com

PONS dictionary | Definitions, Translations and Vocabulary

Germany’s most-trusted foreign-language dictionary. Includes language-learning materials, definitions, examples, pronunciation tips and a vocabulary trainer.

Title Length58 chars

Recommended: 50-60 chars

Description Length157 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

42 rules

Sponsored

Security Score

46%Poor

Interactive

HTTPS

No WAF

70d

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

29.01.2026

Valid Until

29.04.2026

Subject Alternative Names (1)

en.pons.com

SHA-256 Fingerprint

6B:8F:09:FF:85:AB:4F:BD:C3:C6:81:A7:04:C8:35:0C:8D:9C:A6:53...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Wed, 18 Feb 2026 05:00:34 GMT

strict-transport-security

max-age=31536000; includeSubDomains

vary

origin

x-content-type-options

nosniff

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (4)

mx01.hornetsecurity.com

mx04.hornetsecurity.com

mx03.hornetsecurity.com

mx02.hornetsecurity.com

Domain Information

pons.com

Domain Age

30y 1m

Created

26.01.1996

Expires

27.01.2027

Last Updated

28.01.2026

Registrar

InterNetX GmbH

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

Typography & Readability

Lora + SeroWebPro

62/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

21/25

3x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Lora

Serif48px

Body Font

SeroWebPro

Sans16px

Contrast Ratio

Reading Comfort

~38 CPL

Needs attention

48px

20px

16px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 3.0x larger than body text.

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

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

⚠️ Cramped layout: 34 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(15)geolocation.onetrust.com(1)en.pons.com(1)0.html-load.com(1)

Website Identity

Facebook Instagram LinkedIn

Sponsored

Last analyzed: 18 Feb 2026 at 05:00

Historical Analysis & Change Tracking