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

dn.pt

https://dn.pt· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

dn.pt

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

23.20.179.164

Server Location

🇺🇸 Ashburn, United States

ASN

AS14618

Organization

AWS EC2 (us-east-1)

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

micah.ns.cloudflare.com.isla.ns.cloudflare.com.

Performance

Page Speed

312 KB

94 requests

Image Optimization

Lazy LoadWebPAVIFResponsiveThumbor

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Amazon Web Services (AWS)

CDN

Cloudflare

Progressive Web App

Web ManifestTheme Color

Detected API Sources

https://cdn.id5-sync.com/api/1...

Technology Stack

14 Technologies Detected

Advertising

Google Ads Google AdSense LinkedIn Ads Criteo

Analytics

Meta Frameworks

CSS Frameworks

Fonts

Tag Managers

CDN

Frameworks

Customer Support

SEO Analysis

A84/100

dn.ptdn.pt

Diário de Notícias

Diário de Notícias - o jornal diário online de referência. Todas as notícias sobre a atualidade nacional, internacional, economia, desporto, artes, sociedade...

Description truncated.

Title Length18 chars

Recommended: 50-60 chars

Description Length221 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

8,123 URLs

robots.txt

4 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

81%Very Good

Static / Informational

HTTPS

WAF

83d

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+H3

Valid From

13.02.2026

Valid Until

14.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.dn.pt

SHA-256 Fingerprint

EE:68:68:05:98:6E:30:82:E6:EE:E3:D4:00:12:C5:B5:B9:D1:13:5D...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

date

Fri, 20 Feb 2026 04:08:31 GMT

content-type

text/html; charset=utf-8

content-encoding

⚡ Brotli(br)

x-powered-by

Express

cache-control

🟡 15s(public, max-age=15, s-maxage=10800, stale-while-revalidate=1...)

vary

Accept-Encoding

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

dn-pt.mail.protection.outlook.com

Domain Information

dn.pt

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

Typography & Readability

Open Sans + -apple-system

82/100

Readability

/30

32/40

16px · LH 1.38

Hierarchy

/20

20/25

1.88x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Open Sans

Sans30px

Body Font

-apple-system

Sans16px

Contrast Ratio

Reading Comfort

Dual Sans-Serif

left aligned

30px

32px

24px

16px

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

✅ Good hierarchy: Clear distinction between headlines and 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: 14 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

LinkedIn AdsEnterprise

CriteoEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

21 Resources

Scripts

Styles

Async

Defer

Top Script Sources

securepubads.g.doubleclick.net(4)googletagmanager.com(2)cdn-te.e-goi.com(1)local(1)snap.licdn.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn

Sponsored

Last analyzed: 20 Feb 2026 at 04:09

Historical Analysis & Change Tracking