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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univision.com

https://univision.com· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

univision.com

Mobile

Sponsored

Hosting Provider

Google Cloud Platform

cloud.google.com

IP Address

34.160.138.0

Server Location

🇺🇸 Kansas City, United States

ASN

AS396982

Organization

Google Cloud

CDN

Fastly

Nameservers

ns-935.awsdns-52.net.ns-1073.awsdns-06.org.ns-1898.awsdns-45.co.uk.ns-214.awsdns-26.com.

Performance

Page Speed

1.5 MB

106 requests

Image Optimization

Lazy LoadResponsiveVercel Image Optimization

0–49

50–89

90–100

Architecture Stack

Hybrid

🔀 Hybrid

Frontend

Framework

Next.js

Infrastructure

Hosting

Google Cloud Platform

CDN

Fastly

Progressive Web App

Web ManifestTheme Color

Technology Stack

9 Technologies Detected

Advertising

Google Ads Google AdSense Taboola

Meta Frameworks

Analytics

CSS Frameworks

Tag Managers

SEO Analysis

B78/100

univision.comunivision.com

Univision | Shows, Noticias, Entretenimiento, Deportes y Novelas - ...

La mejor cobertura en Noticias, Deportes y Entretenimiento. Lo mejor de nuestra programación de TV. | Univision

Title truncated.

Title Length113 chars

Recommended: 50-60 chars

Description Length111 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

93 rules

Sitemap reference found

Sponsored

Security Score

0%Critical

Critical / Transactional

HTTPS

WAF

72d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

27.01.2026

Valid Until

27.04.2026

Subject Alternative Names (1)

www.univision.com

SHA-256 Fingerprint

95:20:DC:B2:EF:B1:36:5C:91:A1:09:B1:D4:1F:ED:19:42:07:59:BC...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

661

alt-svc

h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=864...

cache-control

🟡 0s(public, max-age=0, must-revalidate)

content-encoding

⚡ Brotli(br)

content-length

234229

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (4)

alt3.aspmx.l.google.com

aspmx.l.google.com

alt2.aspmx.l.google.com

alt1.aspmx.l.google.com

Domain Information

univision.com

Domain Age

31y 1m

Created

04.01.1995

Expires

03.01.2027

Last Updated

30.12.2025

Registrar

CSC Corporate Domains, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

Typography & Readability

Roboto Flex + Poppins

71/100

Readability

/30

40/40

20px · LH 1.50

Hierarchy

/20

8/25

0.8x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Roboto Flex

Sans16px

Body Font

Poppins

Sans20px

Contrast Ratio

Reading Comfort

Dual Sans-Serif

left aligned

16px

40px

20px

Major Sixth

Scale

✅ Excellent readability: 20px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

⚠️ Weak hierarchy: Headlines should be at least 2x body size for clear visual structure.

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

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

⚠️ Cramped layout: 137 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

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(20)

Website Identity

univision.com

31 years old

CSC Corporate Domains, Inc.📧 Google Workspace

Social Profiles

Facebook X (Twitter)Instagram

Sponsored

Last analyzed: 13 Feb 2026 at 21:37

Historical Analysis & Change Tracking