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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euskadi.eus

https://euskadi.eus· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

euskadi.eus

Sponsored

Hosting Provider

E.J.I.E. - EUSKO JAURLARITZAREN INFORMATIKA ELKARTEA - SOCIEDAD INFORMATICA DEL GOBIERNO VASCO S.A

IP Address

185.161.116.21

Server Location

🇪🇸 Bilbao, Spain

ASN

AS207060

Organization

E.J.I.E. - EUSKO JAURLARITZAREN INFORMATIKA ELKARTEA - SOCIEDAD INFORMATICA DEL GOBIERNO VASCO S.A

Server

Apache

Nameservers

ns-1680.awsdns-18.co.uk.ns-212.awsdns-26.com.ns-613.awsdns-12.net.ns-1442.awsdns-52.org.

Performance

Page Speed

652 KB

32 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

E.J.I.E. - EUSKO JAURLARITZAREN INFORMATIKA ELKARTEA - SOCIEDAD INFORMATICA DEL GOBIERNO VASCO S.A

Technology Stack

7 Technologies Detected

Analytics

Libraries

CSS Frameworks

Fonts

Tag Managers

Web Servers

SEO Analysis

C67/100

euskadi.euseuskadi.eus

Euskadi.eus - Eusko Jaurlaritzaren informazioa, tramiteak eta zerbi...

Euskadi.eus Euskal administrazioak Interneten duen Ataria da eta bere helburu nagusia Administrazioa herritarrei hurbiltzea da.

Title truncated.

Title Length72 chars

Recommended: 50-60 chars

Description Length127 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (6/8)

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

2 URLs

robots.txt

883 rules

Sponsored

Security Score

36%Critical

Interactive

HTTPS

No WAF

132d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

IZENPE S.A.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

30.05.2025

Valid Until

29.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.euskadi.euseuskadi.eus

SHA-256 Fingerprint

E6:5C:7B:89:7A:8E:01:9F:52:07:A1:5D:76:A7:AE:A5:7C:46:57:D6...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

access-control-allow-methods

POST,GET,OPTIONS,DELETE,PUT,HEAD,PATCH

access-control-allow-origin

connection

keep-alive

content-type

text/html; charset=ISO-8859-1

date

Mon, 16 Feb 2026 23:04:34 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

ejie.in.tmes.trendmicro.eu

Domain Information

euskadi.eus

Domain Age

11y 2m

Created

25.11.2014

Expires

25.11.2026

Last Updated

19.12.2025

Registrar

Nominalia Internet S.L.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

Typography & Readability

Open Sans + sans-serif

71/100

Readability

/30

25/40

16px · LH 1.00

Hierarchy

/20

25/25

2.6x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Open Sans

Sans42px

Body Font

sans-serif

Sans16px

Contrast Ratio

Reading Comfort

~44 CPL

Needs attention

42px

16px

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

⚠️ Tight line spacing (1.00). Consider 1.4-1.6 for better readability.

✅ Strong hierarchy: Headlines are 2.6x larger than 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.

✅ Protected text on images: Using gradient for readability.

GGoogle Fonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

12 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(3)local(2)

Website Identity

Facebook X (Twitter)LinkedIn

Sponsored

Last analyzed: 16 Feb 2026 at 23:04

Historical Analysis & Change Tracking