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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wireguard.com

https://wireguard.com· First analyzed 18 Feb 2026· Updated 18 Feb 2026

Export

wireguard.com

Sponsored

Hosting Provider

Equinix Services, Inc

IP Address

136.144.57.121

Server Location

🇺🇸 Ashburn, United States

ASN

AS15830

Organization

Equinix Services, Inc

Server

ZX2C4 Web Server

Nameservers

ns2.zx2c4.com.ns1.zx2c4.com.

Performance

Page Speed

158 KB

12 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Equinix Services, Inc

Technology Stack

3 Technologies Detected

Libraries

jQuery

Icon Libraries

Font Awesome

Analytics

Google Analytics

SEO Analysis

C64/100

wireguard.comwireguard.com

WireGuard: fast, modern, secure VPN tunnel

Title Length42 chars

Recommended: 50-60 chars

Description Length42 chars

Recommended: 120-160 chars

Issues (0)

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

18 URLs

robots.txt

Sponsored

A+

Security Score

91%Excellent

Static / Informational

HTTPS

No WAF

84d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp384r1) (384 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

12.02.2026

Valid Until

13.05.2026

Subject Alternative Names (11)

download.wireguard.comwireguard.comwireguard.iowireguard.netwireguard.networkwireguard.orgwww.wireguard.comwww.wireguard.io+3 more

SHA-256 Fingerprint

27:99:DE:28:B4:31:C5:72:00:DD:C2:9C:BC:22:46:08:FB:BD:39:FA...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=2592000,h3-29=":443"; ma=2592000

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Wed, 18 Feb 2026 00:51:52 GMT

etag

W/"65efb7ff-5634"

last-modified

Tue, 12 Mar 2024 02:03:43 GMT

Good Warning Issue

Email Infrastructure

Mailgun

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

mxa.mailgun.org

mxb.mailgun.org

Domain Information

wireguard.com

Domain Age

24y 8m

Created

03.06.2001

Expires

03.06.2027

Last Updated

02.07.2024

Registrar

Squarespace Domains II LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

Helvetica Neue

53/100

Readability

/30

32/40

15px · LH 1.43

Hierarchy

/20

21/25

2.6x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Helvetica Neue

Sans39px

Body Font

Helvetica Neue

Sans15px

Contrast Ratio

Reading Comfort

~38 CPL

Needs attention

39px

32px

17px

15px

⚠️ Small text: 15px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.43 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.6x larger than body text.

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

✅ Consistent design: Single font family with weight variations is a modern best practice.

⚠️ Risky: Text appears on background images without overlay protection.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

3 Resources

Scripts

Styles

Async

Defer

Top Script Sources

google-analytics.com(1).(1)

Sponsored

Last analyzed: 18 Feb 2026 at 00:51

Historical Analysis & Change Tracking