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.

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tnt.com

https://tnt.com· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

tnt.com

Sponsored

Hosting Provider

FedEx Express International B.V

IP Address

164.39.122.27

Server Location

🇳🇱 Amsterdam, The Netherlands

ASN

AS44931

Organization

FedEx Express International B.V

Nameservers

a9.dns.fedex.com.a8.dns.fedex.com.a7.dns.fedex.com.a5.dns.fedex.com.+2 more

Performance

Page Speed

2.2 MB

72 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Adobe Experience Manager

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

3 Technologies Detected

Libraries

jQuery

jQuery UI

CSS Frameworks

Tailwind CSS

SEO Analysis

A80/100

tnt.comtnt.com

TNT Express -palvelut | TNT Finland

Tervetuloa TNT Expressille. Tarjoamme ovelta-ovelle -toimitukset yli 200 maahan —yhdistämme ihmiset ja yritykset kaikkialla maailmassa.

Title Length35 chars

Recommended: 50-60 chars

Description Length135 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

193 URLs

robots.txt

39 rules

Sitemap reference found

Sponsored

Security Score

76%Good

Interactive

HTTPS

No WAF

120d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

16.06.2025

Valid Until

16.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (11)

www.tnt.comclick.mail.tnt.comdirect.tnt.co.ukmy.tnt.commytnt.tnt.comorigin.tnt.comtest.tnt.comtnt.com+3 more

SHA-256 Fingerprint

10:11:97:B0:22:E6:2A:73:2D:9C:E9:85:F3:88:37:9B:8B:A7:B5:46...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🔵 1 Days(max-age=86400)

content-encoding

📦 Gzip(gzip)

content-length

9026

content-security-policy

frame-ancestors 'self';

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

mxa-0002ee02.gslb.pphosted.com

mxb-0002ee02.gslb.pphosted.com

Domain Information

tnt.com

Domain Age

29y 4m

Created

03.10.1996

Expires

02.10.2026

Last Updated

28.09.2025

Registrar

CSC Corporate Domains, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Usercentrics

Cookie Consent Banner

Usercentrics

GDPR Indicators

Cookie consent banner detected

CMP: Usercentrics

Typography & Readability

TNT

79/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

16/25

1.75x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

TNT

Sans28px

Body Font

TNT

Sans16px

Contrast Ratio

Reading Comfort

~50 CPL

Optimal (45–75)

28px

20px

16px

✅ Excellent readability: 16px 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.

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

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

✅ Optimal line length: ~50 characters per line is comfortable to read.

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

25 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(12)assets.adobedtm.com(4)tdn.r42tag.com(2)hello.myfonts.net(1)web.cmp.usercentrics.eu(1)

Website Identity

X (Twitter)

Sponsored

Last analyzed: 16 Feb 2026 at 22:10

Historical Analysis & Change Tracking