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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omniglot.com

https://omniglot.com· First analyzed 18 Feb 2026· Updated 18 Feb 2026

Export

omniglot.com

Sponsored

Hosting Provider

KGIX Network / DosArrest

IP Address

91.197.229.211

Server Location

🇬🇧 City of London, United Kingdom

ASN

AS204436

Organization

KGIX Network / DosArrest

Nameservers

ns4.kualo.net.ns1.kualo.net.ns2.kualo.net.ns3.kualo.net.

Performance

Page Speed

150 KB

29 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

KGIX Network / DosArrest

Technology Stack

4 Technologies Detected

Analytics

Tag Managers

Languages

SEO Analysis

C68/100

omniglot.comomniglot.com

Omniglot - the encyclopedia of writing systems and languages

A guide to writing systems and languages, with useful phrases, tips on learning languages, multilingual texts, and much more.

Title Length60 chars

Recommended: 50-60 chars

Description Length125 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

5 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

71%Good

Static / Informational

HTTPS

No WAF

61d

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+H3

Valid From

21.01.2026

Valid Until

21.04.2026

Subject Alternative Names (4)

*.celtiadur.com*.omniglot.comceltiadur.comomniglot.com

SHA-256 Fingerprint

B2:FD:B2:C4:37:78:7D:50:D2:22:D9:32:E4:09:B4:D8:54:B0:70:95...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=2592000, h3-29=":443"; ma=2592000, h3-Q050=":4...

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Wed, 18 Feb 2026 03:57:37 GMT

vary

Accept-Encoding

x-powered-by

PHP/7.4.33

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

mail.omniglot.com

Domain Information

omniglot.com

Domain Age

26 years

Created

12.02.2000

Expires

12.02.2033

Last Updated

04.07.2023

Registrar

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

sans-serif

95/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

25/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

sans-serif

Sans32px

Body Font

sans-serif

Sans16px

Contrast Ratio

Reading Comfort

~40 CPL

Needs attention

32px

22px

16px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

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

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

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

8 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.ampproject.org(3)googletagmanager.com(2)scripts.cleverwebserver.com(1)ui.cleverwebserver.com(1)

Website Identity

Facebook Instagram YouTube TikTok Bluesky

Sponsored

Last analyzed: 18 Feb 2026 at 03:57

Historical Analysis & Change Tracking