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

vista.com

https://vista.com· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

vista.com

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.18.43.89

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

dara.ns.cloudflare.com.junade.ns.cloudflare.com.

Performance

Page Speed

2.2 MB

250 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

CMS

Contentful

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

17 Technologies Detected

Advertising

Google Ads LinkedIn Ads TikTok Pixel Snapchat Pixel Microsoft Advertising Criteo

Analytics

CSS Frameworks

Frameworks

Tag Managers

Reviews

CDN

Customer Support

Email Marketing

SEO Analysis

D58/100

vista.comvista.com

VistaPrint Official Website: Online Printing Services

VistaPrint online printing services help you create and order the best custom products: marketing materials, business cards, signage, promotional products, c...

Description truncated.

Title Length53 chars

Recommended: 50-60 chars

Description Length189 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (138/186)

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

122 rules

Sitemap reference found

Sponsored

Security Score

0%Critical

Critical / Transactional

HTTPS

WAF

284d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

29.10.2025

Valid Until

30.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (10)

www.vistaprint.comvistaprint.bizvistaprint.cavistaprint.mxvistaprint.co.krwww.vistaprint.bizwww.vistaprint.cawww.vistaprint.mx+2 more

SHA-256 Fingerprint

69:03:AE:67:12:51:71:24:D8:20:93:6C:51:28:15:17:64:3D:77:8A...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🔴 No Cache(no-cache, private, max-age=0)

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9d05bbcb9a56d2af-FRA

content-encoding

📦 Gzip(gzip)

content-type

text/html

Good Warning Issue

Email Infrastructure

Mimecast

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

eu-smtp-inbound-1.mimecast.com

eu-smtp-inbound-2.mimecast.com

Domain Information

vista.com

Domain Age

31y 3m

Created

02.11.1994

Expires

01.11.2027

Last Updated

30.09.2025

Registrar

MarkMonitor Inc.

DNSSEC

Not Enabled

Privacy & Compliance

consentmanager

Cookie Consent Banner

consentmanager

GDPR Indicators

Cookie consent banner detected

CMP: consentmanager

Data Protection Officer mentioned

Typography & Readability

Graphik

63/100

Readability

/30

32/40

14px · LH 1.50

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Graphik

Sans

Body Font

Graphik

Sans14px

Contrast Ratio

Reading Comfort

~51 CPL

Optimal (45–75)

28px

16px

14px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Good performance: Using 1 font families keeps load times fast.

✅ 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.

✅ Optimal line length: ~51 characters per line is comfortable to read.

Buy on MyFonts

Business & Marketing Stack

12 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

Quantum MetricEnterprise

User behavior and product analytics

Advertising

Facebook PixelMid-Market

LinkedIn AdsEnterprise

Pinterest AdsMid-Market

TikTok PixelMid-Market

Microsoft AdsEnterprise

Reddit PixelMid-Market

Snapchat PixelMid-Market

CriteoEnterprise

Ad platforms and retargeting pixels

Reviews & Social Proof

TrustpilotMid-Market

Customer reviews and testimonials

Sponsored

Scripts & Styles

20 Resources

Scripts

Styles

Async

Defer

Top Script Sources

analytics.tiktok.com(5)googletagmanager.com(5)s.pinimg.com(2)connect.facebook.net(2)cdn.veritonic.com(1)

Website Identity

Facebook X (Twitter)Instagram Pinterest

Sponsored

Last analyzed: 19 Feb 2026 at 12:23

Historical Analysis & Change Tracking