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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is.fi

https://is.fi· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

is.fi

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

3.174.113.112

Server Location

🇫🇮 Helsinki, Finland

ASN

AS16509

Organization

AWS CloudFront (GLOBAL)

Server

Sanoma

CDN

CloudFront

Nameservers

ns-2017.awsdns-60.co.uk.ns-824.awsdns-39.net.ns-111.awsdns-13.com.ns-1159.awsdns-16.org.

Performance

Page Speed

1.3 MB

116 requests

Image Optimization

WebPAVIFResponsiveFastly Image Optimizer

0–49

50–89

90–100

Architecture Stack

Hybrid

🔀 Hybrid

Frontend

Framework

Next.js

Styling

Tailwind CSS

Infrastructure

Hosting

Amazon Web Services (AWS)

CDN

CloudFront

Progressive Web App

Web Manifest

Technology Stack

6 Technologies Detected

Meta Frameworks

Other

CSS Frameworks

Tag Managers

Advertising

SEO Analysis

C68/100

is.fiis.fi

Ilta-Sanomat - IS - Suomen suurin uutismedia

Lue uutisia Suomesta ja maailmalta heti tuoreeltaan. IS seuraa uutistilannetta ympäri vuorokauden.

Title Length44 chars

Recommended: 50-60 chars

Description Length98 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (10/19)

4 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

60 rules

Sitemap reference found

Sponsored

A+

Security Score

100%Excellent

Static / Informational

HTTPS

No WAF

335d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

24.12.2025

Valid Until

21.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

is.fi*.is.fi

SHA-256 Fingerprint

66:3A:0C:EB:C2:D9:BD:4B:8D:A3:CA:6D:D9:C4:E6:15:07:59:87:72...

Upgrade to view header details

HTTP Headers

Developer Console

accept-ch

sec-ch-ua-model,sec-ch-ua-platform-version

age

alt-svc

h3=":443"; ma=86400

cache-control

🟡 9s(max-age=9, stale-while-revalidate=10)

content-encoding

📦 Gzip(gzip)

content-security-policy

frame-ancestors 'self'; object-src 'none'; upgrade-insecure-...

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

MX Records (1)

is-fi.mail.protection.outlook.com

Domain Information

is.fi

Domain Age

9y 5m

Created

12.09.2016

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

Typography & Readability

ui-sans-serif + sans-serif

67/100

Readability

/30

32/40

16px · LH 1.20

Hierarchy

/20

8/25

1x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

17/20

System fonts

Heading Font

ui-sans-serif

Sans16px

Body Font

sans-serif

Sans16px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

16px

26px

18px

16px

Major Second

Scale

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

⚠️ Weak hierarchy: Headlines should be at least 2x body size for clear visual structure.

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

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 29 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

Business & Marketing Stack

4 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

20 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(15)sak.dnt-userreport.com(1)googletagservices.com(1)cdn.pongo.is.fi(1)assets.adobedtm.com(1)

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Last analyzed: 20 Feb 2026 at 03:24

Historical Analysis & Change Tracking