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

ebi.ac.uk

https://ebi.ac.uk· First analyzed 14 Feb 2026· Updated 14 Feb 2026

Export

ebi.ac.uk

Mobile

Sponsored

Hosting Provider

European Bioinformatics Institute

IP Address

193.62.192.80

Server Location

🇬🇧 Cambridge, United Kingdom

ASN

AS786

Organization

European Bioinformatics Institute

Server

Apache

Nameservers

dns1.embl-heidelberg.de.hl2-ns02.ebi.ac.uk.ns03.ebi.ac.uk.hl1-ns01.ebi.ac.uk.+2 more

Performance

Page Speed

652 KB

28 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

Technology Stack

5 Technologies Detected

Analytics

Frameworks

CSS Frameworks

Web Servers

SEO Analysis

A82/100

ebi.ac.ukebi.ac.uk

EMBL-EBI homepage | EMBL-EBI

EMBL's European Bioinformatics Institute: Big data for the life sciences

Title Length28 chars

Recommended: 50-60 chars

Description Length72 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

121 URLs

robots.txt

194 rules

Sponsored

Security Score

76%Good

Interactive

HTTPS

No WAF

236d

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/1.1

Valid From

08.10.2025

Valid Until

08.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (6)

ebi.ac.ukdev-beta.intranet.ebi.ac.ukdev.intranet.ebi.ac.ukintranet.ebi.ac.ukwww.ebi.ac.ukwwwdev.ebi.ac.uk

SHA-256 Fingerprint

CA:98:25:5D:5D:73:14:64:4F:BE:29:7B:41:53:F1:A3:15:F0:5C:0A...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

access-control-allow-origin

cache-control

🔴 No Cache(max-age=10, no-store)

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

content-length

9047

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

ironport1.embl.de

ironport2.embl.de

Domain Information

ebi.ac.uk

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

IBM Plex Sans

68/100

Readability

/30

40/40

19px · LH 1.42

Hierarchy

/20

25/25

2.21x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

IBM Plex Sans

Sans42px

Body Font

IBM Plex Sans

Sans19px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

42px

24px

11px

19px

✅ Excellent readability: 19px body text is ideal for all devices.

✅ Optimal line spacing: 1.42 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.2x 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.

⚠️ Risky: Text appears on background images without overlay protection.

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Sponsored

Scripts & Styles

8 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdnjs.cloudflare.com(2)local(1)ebi.emblstatic.net(1)googletagmanager.com(1)

Sponsored

Last analyzed: 14 Feb 2026 at 10:37

Historical Analysis & Change Tracking