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

dnv.com

https://dnv.com· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

dnv.com

Sponsored

Hosting Provider

Episerver Stockholm

IP Address

217.114.94.2

Server Location

🇸🇪 Stockholm, Sweden

ASN

AS30811

Organization

Episerver Stockholm

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

zita.ns.cloudflare.com.weston.ns.cloudflare.com.

Performance

Page Speed

1.5 MB

89 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Episerver Stockholm

CDN

Cloudflare

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

4 Technologies Detected

CSS Frameworks

Icon Libraries

Tag Managers

CDN

SEO Analysis

C64/100

dnv.comdnv.com

DNV.com - When trust matters - DNV

Driven by our purpose of safeguarding life, property and the environment, DNV enables organizations to advance the safety and sustainability of their business.

Title Length34 chars

Recommended: 50-60 chars

Description Length159 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

38 rules

Sitemap reference found

Sponsored

Security Score

86%Very Good

Interactive

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

10.02.2026

Valid Until

11.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.dnv.com*.www.dnv.com

SHA-256 Fingerprint

4A:A2:C6:B1:76:28:3E:EB:42:0F:CE:11:9A:5A:AF:6D:CA:6A:B8:5B...

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9cf278d26edb5d7b-FRA

content-encoding

📦 Gzip(gzip)

content-security-policy

default-src 'self';script-src 'self' 'nonce-y59kc7A4huH2Am4f...

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

dnv-com.mail.protection.outlook.com

Domain Information

dnv.com

Domain Age

29y 6m

Created

01.08.1996

Expires

31.07.2027

Last Updated

03.12.2025

Registrar

Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USA

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

Typography & Readability

Gantari

63/100

Readability

/30

32/40

24px · LH 1.33

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Gantari

Sans

Body Font

Gantari

Sans24px

Contrast Ratio

Reading Comfort

~38 CPL

Needs attention

36px

24px

13px

24px

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

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

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

⚠️ Cramped layout: 30 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

27 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(11)cdn.cookielaw.org(2)dnv.com(1)devcms.dnv.com(1)sgtm.dnv.com(1)

Website Identity

Facebook LinkedIn

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Last analyzed: 17 Feb 2026 at 04:17

Historical Analysis & Change Tracking