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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elmostrador.cl

https://elmostrador.cl· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

elmostrador.cl

Sponsored

Hosting Provider

Servicios Integrales De Informatica Digitalproserver SPA

IP Address

45.230.21.32

Server Location

🇨🇱 Santiago, Chile

ASN

AS271803

Organization

Servicios Integrales De Informatica Digitalproserver SPA

Server

Digitalproserver front-elmostrador v32

CDN

Azure Cdn

Nameservers

ns4-32.azure-dns.info.ns1-32.azure-dns.com.ns2-32.azure-dns.net.ns3-32.azure-dns.org.

Performance

Page Speed

1.3 MB

59 requests

Image Optimization

Lazy LoadWebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Servicios Integrales De Informatica Digitalproserver SPA

CDN

Azure Cdn

Technology Stack

12 Technologies Detected

Advertising

Google Ads Criteo Outbrain

Analytics

Meta Frameworks

Libraries

CSS Frameworks

Icon Libraries

Fonts

Tag Managers

Payments

SEO Analysis

B78/100

elmostrador.clelmostrador.cl

El Mostrador

El primer medio digital de Chile

Title Length12 chars

Recommended: 50-60 chars

Description Length32 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

101 URLs

robots.txt

13 rules

Sitemap reference found

Sponsored

Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

173d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

13.08.2025

Valid Until

12.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.elmostrador.clelmostrador.cl

SHA-256 Fingerprint

04:E6:0F:D1:8F:A0:20:FB:49:A4:A0:F4:A1:AE:82:EF:AE:04:94:37...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟡 120s(max-age=120)

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Fri, 20 Feb 2026 07:21:30 GMT

expires

Fri, 20 Feb 2026 07:23:30 GMT

server

Digitalproserver front-elmostrador v32

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

aspmx.l.google.com

alt1.aspmx.l.google.com

aspmx3.googlemail.com

alt2.aspmx.l.google.com

+1 more

Domain Information

elmostrador.cl

DNSSEC

Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner

Quantcast Choice

GDPR Indicators

Cookie consent banner detected

CMP: Quantcast Choice

Legitimate interest basis mentioned

Typography & Readability

Source Serif 4 + Josefin Sans

68/100

Readability

/30

25/40

21px · LH 1.10

Hierarchy

/20

20/25

1.67x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Source Serif 4

Serif36px

Body Font

Josefin Sans

Sans21px

Contrast Ratio

Reading Comfort

~45 CPL

Needs attention

36px

21px

✅ Excellent readability: 21px body text is ideal for all devices.

⚠️ Tight line spacing (1.10). Consider 1.4-1.6 for better readability.

✅ Good hierarchy: Clear distinction between headlines and body text.

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

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

⚠️ Cramped layout: 119 elements lack adequate spacing.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

15 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(5)googletagmanager.com(2)securepubads.g.doubleclick.net(2)fundingchoicesmessages.google.com(2)instagram.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube

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Last analyzed: 20 Feb 2026 at 07:23

Historical Analysis & Change Tracking