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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postimees.ee

https://postimees.ee· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

postimees.ee

Sponsored

Hosting Provider

Postimees Grupp

IP Address

185.154.221.53

Server Location

🇪🇪 Tallinn, Estonia

ASN

AS207254

Organization

Postimees Grupp

Nameservers

ns2.zone.ee.ns.zone.eu.ns3.zonedata.net.

Performance

Page Speed

863 KB

70 requests

Image Optimization

Lazy LoadResponsiveThumbor

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Postimees Grupp

Progressive Web App

Web ManifestApple Touch IconTheme Color

Detected API Sources

https://auth.postimees.ee/id/a...

Technology Stack

10 Technologies Detected

Analytics

Google Analytics

FullStory

Advertising

Google Ads Google AdSense

CSS Frameworks

Fonts

Tag Managers

CDN

Customer Support

Security

SEO Analysis

B76/100

postimees.eepostimees.ee

Postimees: Värsked uudised Eestist ja välismaalt

Postimees: Värsked uudised Eestist ja välismaalt. Loe lähemalt

Title Length48 chars

Recommended: 50-60 chars

Description Length62 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

robots.txt

73 rules

Sitemap reference found

Sponsored

Security Score

76%Good

Static / Informational

HTTPS

No WAF

71d

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

01.02.2026

Valid Until

02.05.2026

Subject Alternative Names (2)

*.postimees.eepostimees.ee

SHA-256 Fingerprint

11:BF:E9:CF:C6:1C:B0:14:2E:E7:42:1B:7F:3C:2F:3C:A3:9D:9E:1D...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

cache-control

🟡 15s(max-age=15, private)

content-encoding

📦 Gzip(gzip)

content-length

35988

content-security-policy

frame-ancestors 'self' https://*.postimees.ee https://*.pmo....

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

postimees-ee.mail.protection.outlook.com

Domain Information

postimees.ee

DNSSEC

Not Enabled

Privacy & Compliance

Didomi

Cookie Consent Banner

Didomi

GDPR Indicators

Cookie consent banner detected

CMP: Didomi

Data Protection Officer mentioned

Typography & Readability

Arial

63/100

Readability

/30

32/40

14px · LH 1.43

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Arial

Sans

Body Font

Arial

Sans14px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

20px

16px

14px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.43 ratio ensures comfortable reading.

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

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

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 83 elements lack adequate spacing.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

5 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

Reviews & Social Proof

TrustpilotMid-Market

Customer reviews and testimonials

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.cxense.com(3)static.chartbeat.com(2)sdk.privacy-center.org(2)pagead2.googlesyndication.com(2)adxbid.info(1)

Website Identity

Facebook X (Twitter)Instagram

Sponsored

Last analyzed: 19 Feb 2026 at 19:25

Historical Analysis & Change Tracking