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

nutritionfacts.org

https://nutritionfacts.org· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

nutritionfacts.org

Sponsored

Hosting Provider

Rackspace

rackspace.com

IP Address

104.130.29.139

Server Location

🇺🇸 Washington, United States

ASN

AS27357

Organization

Cloud Servers Cell 0001-0003 IAD3

Server

Nginx

CDN

Cloudflare

WAF

Cloudflare

Nameservers

elle.ns.cloudflare.com.bob.ns.cloudflare.com.

Performance

Page Speed

785 KB

161 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Rackspace

CDN

Cloudflare

Progressive Web App

Web ManifestApple Touch Icon

Detected API Sources

https://player.vimeo.com/api/p...

Technology Stack

17 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

Libraries

jQueryv3.6.1

Underscore.js

Fonts

Google Fonts Adobe Fonts (Typekit)

Plugins

CSS Frameworks

Icon Libraries

Tag Managers

Customer Support

Advertising

Microsoft Advertising

Popups & Forms

OptinMonster

Web Servers

Nginx

SEO Analysis

B70/100

nutritionfacts.orgnutritionfacts.org

NutritionFacts.org | The Latest Nutrition Related Topics

The latest in nutrition research delivered in easy to understand videos, blog posts, and podcasts brought to you by Dr. Michael Greger M.D.

Title Length56 chars

Recommended: 50-60 chars

Description Length139 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (16/27)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

152 URLs

robots.txt

3 rules

Sponsored

Security Score

76%Good

Interactive

HTTPS

No WAF

37d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

28.12.2025

Valid Until

28.03.2026

Subject Alternative Names (2)

nutritionfacts.orgwww.nutritionfacts.org

SHA-256 Fingerprint

BE:AB:51:9F:FF:9D:2E:B7:C1:74:A1:F5:4A:F2:8A:6E:15:B8:42:BB...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-security-policy

frame-ancestors 'self'

content-type

text/html; charset=UTF-8

date

Thu, 19 Feb 2026 20:13:11 GMT

fastcgi-cache

HIT

link

<https://nutritionfacts.org/wp-json/>; rel="https://api.w.or...

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

alt1.aspmx.l.google.com

alt3.aspmx.l.google.com

aspmx.l.google.com

alt4.aspmx.l.google.com

+1 more

Domain Information

nutritionfacts.org

Domain Age

25y 11m

Created

05.03.2000

Expires

05.03.2029

Last Updated

29.12.2025

Registrar

GoDaddy.com, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

Helvetica

69/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Helvetica

Sans

Body Font

Helvetica

Sans16px

Contrast Ratio

Reading Comfort

~32 CPL

Needs attention

34px

22px

24px

16px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

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

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

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 17 elements lack adequate spacing.

GGoogle Fonts AAdobe Fonts Buy on MyFonts

Business & Marketing Stack

7 Tools Detected

Enterprise

Customer Support

ZendeskEnterprise

Live chat and helpdesk tools

Behavior Analytics

Microsoft ClarityFree

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Pinterest AdsMid-Market

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

youtube.com(3)nutritionfacts.org(3)s.pinimg.com(2)googletagmanager.com(2)connect.facebook.net(2)

Website Identity

Facebook X (Twitter)Instagram YouTube Pinterest

Sponsored

Last analyzed: 19 Feb 2026 at 20:11

Historical Analysis & Change Tracking