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

fedex.com

https://fedex.com· First analyzed 11 Feb 2026· Updated 11 Feb 2026

Export

fedex.com

Mobile

Sponsored

Hosting Provider

FedEx Office & Print Services Inc

IP Address

170.170.225.93

Server Location

🇺🇸 Plano, United States

ASN

AS7726

Organization

FedEx Office & Print Services Inc

Server

AkamaiNetStorage

Nameservers

pdns2.cscdns.net.ns1-193.akam.net.ns1-244.akam.net.a5.dns.fedex.com.+6 more

Performance

Page Speed

13 KB

3 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

FedEx Office & Print Services Inc

Technology Stack

1 Technologies Detected

CDN

Akamai

SEO Analysis

F17/100

fedex.comfedex.com

FedEx | System Down

No description available for this page.

Title Length19 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

• Missing meta description - important for click-through rates
• Missing H1 tag - every page should have one H1
• Missing viewport meta tag - page may not be mobile-friendly

8 issues found

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Security Score

26%Critical

Interactive

HTTPS

WAF

35d

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

akamai-grn

0.571f1602.1770791131.f12db95a

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Wed, 11 Feb 2026 06:25:31 GMT

etag

"ab7bdafca29bb9ab209e450b176fae8d:1442501983"

server

AkamaiNetStorage

Good Warning Issue

Typography & Readability

Arial

73/100

Readability

/30

30/40

18px · LH --

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Arial

Body Font

Arial

Sans18px

Contrast Ratio

Reading Comfort

~76 CPL

Optimal (45–75)

18px

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

✅ Optimal line length: ~76 characters per line is comfortable to read.

✅ Clean layout: Consistent left alignment throughout.

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Scripts & Styles

1 Resources

Scripts

Styles

Async

Defer

Top Script Sources

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Last analyzed: 11 Feb 2026 at 06:25

Historical Analysis & Change Tracking