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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acortar.link

https://acortar.link· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

acortar.link

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.21.43.37

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

bart.ns.cloudflare.com.sima.ns.cloudflare.com.

Performance

Page Speed

185 KB

27 requests

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

11 Technologies Detected

CSS Frameworks

Analytics

Advertising

Google Ads Google AdSense

Frameworks

Libraries

Icon Libraries

CDN

Customer Support

SEO Analysis

D56/100

acortar.linkacortar.link

Acortar.link URL gratis ⊷ acortador de link URLs seguro rápido y si...

Servicio online gratuito de acortar links URLs usando protocolo seguro https ssl con estadísticas en acortar.link sin publicidad gratis acortar url, url shor...

Title truncated. Description truncated.

Title Length71 chars

Recommended: 50-60 chars

Description Length222 chars

Recommended: 120-160 chars

Issues (0)

6 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

70 rules

Allows all crawlers

Sponsored

Security Score

65%Fair

Critical / Transactional

HTTPS

WAF

69d

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

28.01.2026

Valid Until

28.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

acortar.link*.acortar.link

SHA-256 Fingerprint

55:EE:37:25:16:64:46:42:28:2B:0E:8B:3D:A2:0B:36:D9:BC:07:3C...

Upgrade to view header details

HTTP Headers

Developer Console

date

Tue, 17 Feb 2026 23:36:06 GMT

content-type

text/html; charset=UTF-8

x-sucuri-id

19032

x-xss-protection

1; mode=block

x-frame-options

SAMEORIGIN

x-content-type-options

nosniff

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

MX Records (7)

spool.mail.gandi.net

alt4.aspmx.l.google.com

alt3.aspmx.l.google.com

fb.mail.gandi.net

+3 more

Domain Information

acortar.link

Domain Age

7y 4m

Created

01.10.2018

Expires

01.10.2028

Last Updated

28.11.2025

Registrar

Gandi SAS

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Helvetica Neue

75/100

Readability

/30

32/40

14px · LH 1.43

Hierarchy

/20

21/25

4.5x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Helvetica Neue

Sans63px

Body Font

Helvetica Neue

Sans14px

Contrast Ratio

Reading Comfort

~88 CPL

Needs attention

63px

30px

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 4.5x 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.

✅ Protected text on images: Using gradient for readability.

Business & Marketing Stack

2 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(6)fundingchoicesmessages.google.com(5)pagead2.googlesyndication.com(3)googletagmanager.com(1)call.chatra.io(1)

Website Identity

acortar.link

7 years old

Gandi SAS📧 Google Workspace

Social Profiles

YouTube

Sponsored

Last analyzed: 17 Feb 2026 at 23:36

Historical Analysis & Change Tracking