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

chain.link

https://chain.link· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

chain.link

Sponsored

Hosting Provider

Webflow

webflow.com

IP Address

198.202.211.1

Server Location

🇺🇸 San Francisco, United States

ASN

AS209242

Organization

Webflow, Inc

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

mary.ns.cloudflare.com.pete.ns.cloudflare.com.

Performance

Page Speed

91 KB

121 requests

Image Optimization

Lazy LoadWebPAVIFResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

jQuery

Styling

Tailwind CSS

CMS

Webflow

Infrastructure

Hosting

Webflow

CDN

Cloudflare

Technology Stack

14 Technologies Detected

Advertising

Twitter Ads LinkedIn Ads TikTok Pixel

Analytics

Frameworks

Libraries

Other

UI Components

CSS Frameworks

Fonts

Adobe Fonts (Typekit)

Tag Managers

Google Tag Manager

Marketing

HubSpot

CDN

Cloudflare

SEO Analysis

B78/100

chain.linkchain.link

Chainlink: The Industry-Standard Oracle Platform

Chainlink is the industry-standard oracle platform powering the majority of decentralized finance and bringing the capital markets onchain.

Title Length48 chars

Recommended: 50-60 chars

Description Length139 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

20 rules

Sitemap reference found

Sponsored

Security Score

71%Good

Interactive

HTTPS

WAF

43d

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

04.01.2026

Valid Until

04.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

chain.link

SHA-256 Fingerprint

92:D5:A7:7C:6F:A2:BA:15:5A:6A:A3:55:07:EA:E2:9F:CA:55:F6:DE...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

38755

alt-svc

h3=":443"; ma=86400

cf-cache-status

HIT

cf-ray🇩🇪 Frankfurt

9d0b0a46c93fd376-FRA

content-encoding

📦 Gzip(gzip)

content-security-policy

frame-ancestors 'self'

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

mxa-0066bf01.gslb.pphosted.com

mxb-0066bf01.gslb.pphosted.com

Domain Information

chain.link

Domain Age

8y 7m

Created

27.07.2017

Expires

27.07.2033

Last Updated

14.11.2023

Registrar

MarkMonitor Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Typography & Readability

TASA Orbiter VF + Inter

71/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

TASA Orbiter VF

Sans

Body Font

Inter

Sans16px

Contrast Ratio

Reading Comfort

~78 CPL

Optimal (45–75)

56px

18px

16px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Good performance: Using 2 font families keeps load times fast.

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

✅ Optimal line length: ~78 characters per line is comfortable to read.

⚠️ Cramped layout: 55 elements lack adequate spacing.

AAdobe Fonts Buy on MyFonts

Business & Marketing Stack

8 Tools Detected

Enterprise

CRM Systems

HubSpotMid-Market

Customer Relationship Management platforms

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Twitter/X AdsMid-Market

LinkedIn AdsEnterprise

TikTok PixelMid-Market

Ad platforms and retargeting pixels

Privacy & Cookies

CookiebotMid-Market

Cookie consent and privacy compliance tools

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

analytics.tiktok.com(3)googletagmanager.com(3)snap.licdn.com(1)js.usemessages.com(1)js.hs-analytics.net(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube TikTok Telegram Reddit

Sponsored

Last analyzed: 20 Feb 2026 at 03:50

Historical Analysis & Change Tracking