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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telerik.com

https://telerik.com· First analyzed 15 Feb 2026· Updated 15 Feb 2026

Export

telerik.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

192.133.11.3

Server Location

🇺🇸 Burlington, United States

ASN

AS209242

Organization

Progress Software

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns-387.awsdns-48.com.ns-647.awsdns-16.net.ns-1332.awsdns-38.org.ns-1813.awsdns-34.co.uk.

Performance

Page Speed

3.2 MB

62 requests

Image Optimization

Lazy LoadWebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Sitefinity

Technology Stack

9 Technologies Detected

Libraries

Analytics

Other

CSS Frameworks

Tag Managers

Advertising

CDN

SEO Analysis

A+90/100

telerik.comtelerik.com

Telerik & Kendo UI - .NET Components Suites & JavaScript UI Libraries

Save time building sleek web, mobile and desktop apps with professional .NET UI Components, JavaScript UI Libraries, Reporting and Automated Testing solutions.

Title Length69 chars

Recommended: 50-60 chars

Description Length159 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

10 URLs

robots.txt

102 rules

Sitemap reference found

Sponsored

A+

Security Score

93%Excellent

Static / Informational

HTTPS

WAF

36d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

23.12.2025

Valid Until

23.03.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.telerik.com

SHA-256 Fingerprint

A6:61:E2:BF:A6:9C:69:E6:1B:40:F4:2A:4C:A6:7C:EF:E1:E0:68:B9...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin

http://localconverter.telerik.com

access-control-expose-headers

Request-Context

alt-svc

h3=":443"; ma=86400

cache-control

🔴 No Cache(no-cache)

cache-tag

68714985-2399-4058-b04f-a66d8da81f0c|Production

cf-cache-status

DYNAMIC

Good Warning Issue

Email Infrastructure

Mimecast

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

us-smtp-inbound-2.mimecast.com

us-smtp-inbound-1.mimecast.com

Domain Information

telerik.com

Domain Age

24y 10m

Created

01.04.2001

Expires

01.04.2026

Last Updated

27.11.2025

Registrar

Key-Systems GmbH

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Typography & Readability

Arial

63/100

Readability

/30

32/40

22px · LH 1.20

Hierarchy

/20

21/25

3.41x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Arial

Sans75px

Body Font

Arial

Sans22px

Contrast Ratio

Reading Comfort

~40 CPL

Needs attention

75px

18px

26px

22px

✅ Excellent readability: 22px body text is ideal for all devices.

✅ Strong hierarchy: Headlines are 3.4x 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.

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

⚠️ Cramped layout: 100 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Crazy EggSMB

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(6)cdnjs.cloudflare.com(3)d585tldpucybw.cloudfront.net(3)d6vtbcy3ong79.cloudfront.net(2)unpkg.com(1)

Website Identity

Facebook X (Twitter)LinkedIn YouTube GitHub Discord

Sponsored

Last analyzed: 15 Feb 2026 at 05:18

Historical Analysis & Change Tracking