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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lnk.bio

https://lnk.bio· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

lnk.bio

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

172.67.74.243

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

maleah.ns.cloudflare.com.will.ns.cloudflare.com.

Performance

Page Speed

1.1 MB

40 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

9 Technologies Detected

CSS Frameworks

Bootstrap

Tailwind CSS

Icon Libraries

Font Awesome Ionicons

Analytics

Libraries

Fonts

CDN

SEO Analysis

B78/100

lnk.biolnk.bio

Lnk.Bio - Supercharge your Link in Bio on Instagram, TikTok, YouTub...

Offer multiple choices to your followers when they click on your Bio link, Link in Bio. Share all your Social Media profiles and important links with just on...

Title truncated. Description truncated.

Title Length72 chars

Recommended: 50-60 chars

Description Length163 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

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Sponsored

Security Score

61%Fair

Interactive

HTTPS

WAF

47d

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

Valid From

05.01.2026

Valid Until

05.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

lnk.bio*.lnk.bio

SHA-256 Fingerprint

BF:CC:62:5F:85:0E:7C:F8:D2:48:E9:F0:83:F0:EA:42:48:45:3F:CD...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

date

Tue, 17 Feb 2026 00:55:00 GMT

content-type

text/html; charset=UTF-8

server

cloudflare

vary

Accept-Encoding

set-cookie

PHPSESSID

expires

Thu, 19 Nov 1981 08:52:00 GMT, 0

Good Warning Issue

Email Infrastructure

Google Workspace

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (5)

aspmx3.googlemail.com

aspmx2.googlemail.com

aspmx.l.google.com

alt2.aspmx.l.google.com

+1 more

Domain Information

lnk.bio

Domain Age

8y 11m

Created

16.03.2017

Expires

16.03.2029

Last Updated

19.02.2025

Registrar

Soluciones Corporativas IP, SL

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Typography & Readability

sans-serif

85/100

Readability

/30

32/40

14px · LH 1.43

Hierarchy

/20

25/25

2.5x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

sans-serif

Sans35px

Body Font

sans-serif

Sans14px

Contrast Ratio

Reading Comfort

~68 CPL

Optimal (45–75)

35px

30px

35px

14px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.43 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.5x 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.

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

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

9 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(2)googletagmanager.com(1)code.jquery.com(1)cdn.jsdelivr.net(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube TikTok Telegram Mastodon

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Last analyzed: 17 Feb 2026 at 00:55

Historical Analysis & Change Tracking