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

authy.com

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

Export

authy.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.16.163.116

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

CDN

Fastly

Nameservers

jay.ns.cloudflare.com.elsa.ns.cloudflare.com.

Performance

Page Speed

747 KB

44 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Adobe Experience Manager

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

8 Technologies Detected

CSS Frameworks

Analytics

Libraries

Tag Managers

Email Marketing

Other

SEO Analysis

A82/100

authy.comauthy.com

Authy: Two-factor Authentication (2FA) App & Guides | Authy

Two-factor authentication (2FA) adds an additional layer of protection beyond passwords. Download our free app today and follow our easy to use guides to pro...

Description truncated.

Title Length59 chars

Recommended: 50-60 chars

Description Length201 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (1/1)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

19 URLs

robots.txt

Sponsored

A+

Security Score

91%Excellent

Static / Informational

HTTPS

No WAF

218d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

21.08.2025

Valid Until

19.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

authy.comwww.authy.com

SHA-256 Fingerprint

CD:8C:C1:38:6C:F6:5D:44:2A:7A:71:3E:39:DE:A3:8D:65:60:9C:DC...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

476

cache-control

🟡 600s(max-age=600,stale-if-error=7200)

content-encoding

📦 Gzip(gzip)

content-length

29496

content-type

text/html;charset=utf-8

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (7)

aspmx3.googlemail.com

aspmx4.googlemail.com

aspmx.l.google.com

aspmx5.googlemail.com

+3 more

Domain Information

authy.com

Domain Age

22 years

Created

13.02.2004

Expires

13.02.2027

Last Updated

12.01.2025

Registrar

MarkMonitor Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Typography & Readability

Whitney SSm

66/100

Readability

/30

40/40

16px · LH 1.75

Hierarchy

/20

25/25

3x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Whitney SSm

Sans48px

Body Font

Whitney SSm

Sans16px

Contrast Ratio

Reading Comfort

~41 CPL

Needs attention

48px

40px

28px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.75 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 3.0x 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

4 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

TrustArcEnterprise

Cookie consent and privacy compliance tools

A/B Testing & Optimization

VWO (Visual Website Optimizer)Mid-Market

Experimentation and conversion optimization

Sponsored

Scripts & Styles

16 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(6)consent.trustarc.com(2)googletagmanager.com(1)rum.hlx.page(1)assets.adobedtm.com(1)

Website Identity

Facebook X (Twitter)LinkedIn

Sponsored

Last analyzed: 13 Feb 2026 at 16:39

Historical Analysis & Change Tracking