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

avis.com

https://avis.com· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

avis.com

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

98.84.230.61

Server Location

🇺🇸 Ashburn, United States

ASN

AS14618

Organization

AWS EC2 (us-east-1)

Server

Envoy

CDN

CloudFront

Nameservers

ns-1842.awsdns-38.co.uk.ns-33.awsdns-04.com.ns-528.awsdns-02.net.ns-1326.awsdns-37.org.

Performance

Page Speed

2.6 MB

81 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Hybrid

🔀 Hybrid

Frontend

Framework

Next.js

CMS

Adobe Experience Manager

Infrastructure

Hosting

Amazon Web Services (AWS)

CDN

CloudFront

Technology Stack

8 Technologies Detected

CSS Frameworks

Meta Frameworks

Libraries

Analytics

Tag Managers

Payments

Security

SEO Analysis

A+96/100

avis.comavis.com

Car Rentals from Avis | Book Online & Save Now

Reserve your next car rental online with Avis save. A large selection of vehicles available & with the Avis Signature Series you can travel in style.

Title Length46 chars

Recommended: 50-60 chars

Description Length149 chars

Recommended: 120-160 chars

Sponsored

Security Score

20%Critical

Critical / Transactional

HTTPS

No WAF

175d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

23.07.2025

Valid Until

11.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

digital.avisbudget.com*.avis.com*.budget.com*.paylesscar.com*.abgvoice.com*.avisdirect.com*.carrental.com*.avis.ca+12 more

SHA-256 Fingerprint

30:92:39:B6:F2:2D:25:C0:C6:9F:DA:09:6D:BB:20:D1:B2:24:76:5F...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

2058

cache-control

🔴 No Cache(max-age=0, no-cache)

content-encoding

📦 Gzip(gzip)

content-security-policy

frame-src 'self' *.adobeaemcloud.com https://na.account.amaz...

content-type

text/html; charset=utf-8

date

Tue, 17 Feb 2026 11:53:20 GMT

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

avis-com.mail.protection.outlook.com

Domain Information

avis.com

Domain Age

31y 1m

Created

20.01.1995

Expires

21.01.2028

Last Updated

17.01.2026

Registrar

CSC Corporate Domains, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Typography & Readability

AvisHeadline + AvisSans

73/100

Readability

/30

32/40

14px · LH 1.50

Hierarchy

/20

18/25

4.57x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

AvisHeadline

Sans64px

Body Font

AvisSans

Sans14px

Contrast Ratio

Reading Comfort

~34 CPL

Needs attention

64px

36px

14px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 4.6x larger than 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: 56 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

Quantum MetricEnterprise

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

25 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(12)googletagmanager.com(3)cdn.quantummetric.com(2)youtube.com(2)cdn.cookielaw.org(1)

Website Identity

avis.com

31 years old

CSC Corporate Domains, Inc.📧 Microsoft 365

Sponsored

Last analyzed: 17 Feb 2026 at 12:28

Historical Analysis & Change Tracking