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

gandi.net

https://gandi.net· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

gandi.net

Mobile

Sponsored

Hosting Provider

Gandi

gandi.net

IP Address

217.70.185.65

Server Location

🇫🇷 Paris, France

ASN

AS29169

Organization

Gandi Global Public Services

Server

Nginx

CDN

Fastly

Nameservers

dns0.gandi.net.dns1.gandi.net.dns3.gandi.net.dns6.gandi.net.+3 more

Performance

Page Speed

137 KB

14 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

Technology Stack

3 Technologies Detected

CSS Frameworks

Tailwind CSS

Reviews

Trustpilot

Web Servers

Nginx

SEO Analysis

B72/100

gandi.netgandi.net

Gandi.net - Gandi.net: Domain Names, Web Hosting, SSL Certificates ...

➤ Manage your websites, your emails, your SSL certificates, and VPS servers. ✅ Included with a domain name: 1 SSL certificate, Unlimited aliases & forwarding...

Title truncated. Description truncated.

Title Length77 chars

Recommended: 50-60 chars

Description Length175 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (8/8)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

6 URLs

robots.txt

456 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

64%Fair

Interactive

HTTPS

No WAF

130d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Gandi

Key Algorithm

RSA (2048 bit)

Signature

SHA-384 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

02.06.2025

Valid Until

22.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.gandi.netgandi.net

SHA-256 Fingerprint

1A:FA:63:D9:2F:86:C6:9F:C2:D1:A0:1D:CC:CC:B1:6D:0B:80:28:FC...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

server

nginx

content-type

text/html; charset=utf-8

cache-control

🟡 1 Hours(max-age=3700, public)

expires

Thu, 12 Feb 2026 11:00:04 GMT

content-language

en-US

x-frame-options

DENY

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mail12.gandi.net

mail8.gandi.net

Domain Information

gandi.net

Domain Age

26y 9m

Created

21.05.1999

Expires

21.05.2026

Last Updated

22.03.2025

Registrar

Gandi SAS

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

Fraunces + system-ui

86/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

25/25

2.62x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Fraunces

Sans42px

Body Font

system-ui

Sans16px

Contrast Ratio

Reading Comfort

~69 CPL

Optimal (45–75)

42px

12px

16px

20px

16px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.6x 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.

✅ Protected text on images: Using gradient for readability.

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Customer Support

LiveChatMid-Market

Live chat and helpdesk tools

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

8 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(2)cdn.tarteaucitron.io(2)tarteaucitron.io(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube GitHub

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Last analyzed: 12 Feb 2026 at 11:05

Historical Analysis & Change Tracking