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.

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fox17online.com

https://fox17online.com· First analyzed 22 Apr 2026· Updated 22 Apr 2026

Export

fox17online.com

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

3.164.206.10

Site Location

🇫🇮 Finlandvia ip

Server Location

🇫🇮 Helsinki, Finland

ASN

AS16509

Organization

AWS CloudFront (GLOBAL)

Server

N/A

CDN

CloudFront

Nameservers

ns-790.awsdns-34.net.ns-1186.awsdns-20.org.ns-1762.awsdns-28.co.uk.ns-341.awsdns-42.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.4 s10%

Speed Index

1.8 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

506 KB

90 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Platform

AWS CloudFront

CDN

CloudFront

Technology Stack

16 Technologies Detected

Fonts

Google Fonts Adobe Fonts (Typekit)Adobe Fonts

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel

Advertising

Google Ads Criteo Outbrain

Icon Libraries

Font Awesome Material Icons

CSS Frameworks

Tag Managers

Payments

Customer Support

Security

SEO Analysis

B73/100

Meta Tags13/15

Content3/12

Headings6/8

Technical21/25

E-E-A-T2/7

Images7/7

Links5/5

URL5/5

Social4/5

Freshness0/4

Mobile4/4

Indexability3/3

fox17online.comfox17online.com

FOX 17 news, traffic, weather and sports

FOX 17 brings the most local news, weather, traffic and sports from Grand Rapids to Kalamazoo to Battle Creek and across West Michigan on WXMI and fox17onlin...

Description truncated.

Title Length40 chars

Recommended: 50-60 chars (~247px / 580px)

Description Length163 chars

Recommended: 120-160 chars

Issues (1)

• Very thin content (7 words). Search engines need substantial content for ranking.

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

83 URLs

83 sub-sitemaps

robots.txt

17 rules

Sitemap reference found

Local SEO

Local Search Readiness

10/100

Poor

3 13 1

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F26/100

Bot Access

18/25

Machine Read.

0/25

Schema Data

1/25

Citation

7/25

AI Bot Access

12/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:8%

Words:9,562

Token eff.:Excessive

Structured Data

1 JSON-LD

sameAs entity links

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph2/3

Twitter Card2/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

AI readiness recommendation preview...

Upgrade to view recommendations

Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

59/100

Passed

Critical

Warnings

Images & Alt Text

5/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

17/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

7/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

11/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

4/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

3 recommendations

•Accessibility recommendation preview...

Upgrade to view recommendations

Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

75/100

51 mg

CO₂e / view

506.1 KB

Page Weight

90%

Cleaner Than

New Visitor

58 mg

Returning (cached)

29 mg

Annual (10K/mo)

6.1 kg

Emission Segments

Data Center

3 mg

Network

15 mg

Device

34 mg

Resource Breakdown

JavaScript

418.7 KB

Images

3.1 KB

CSS

2.0 KB

Fonts

7.2 KB

HTML

74.4 KB

Other

659 B

Green Hosting Verified

Amazon Web Services (AWS)

Provider Match

3 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

35%Critical

Critical / Transactional

HTTPS

No WAF

144d

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/1.1

Valid From

15.08.2025

Valid Until

13.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

*.tampabay28.com*.krtv.com*.theindychannel.com*.wsfltv.com*.thelisttv.com*.kjrh.com*.wtkr.com*.abc2news.com+12 more

SHA-256 Fingerprint

9A:CE:75:8C:AC:32:CB:04:4B:DC:E8:F4:C1:72:12:E0:DE:98:53:7A...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

cache-control

🟡 240s(max-age=240)

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-security-policy

frame-ancestors 'self' https://cms.scrippsdigital.com

content-type

text/html;charset=UTF-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

mxa-0028be01.gslb.pphosted.com

mxb-0028be01.gslb.pphosted.com

Domain Information

fox17online.com

Domain Age

17y 4m

Created

09.12.2008

Expires

09.12.2026

Last Updated

07.11.2025

Registrar

MarkMonitor Inc.

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

Legitimate interest basis mentioned

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

54/100

Not Mobile Friendly18 breakpoints

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

3 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Inter + Open Sans

WCAG Partial

64/100

Readability

/30

12/30

12px · LH 1.33

Hierarchy

/20

18/20

2.67x ratio

WCAG

/25

16/25

1:1 min contrast

Performance

/25

18/25

2 fonts · 4 req

Heading Font

Inter

Sans32px

Body Font

Open Sans

Sans12px

Contrast Ratio

1:1

3 issues

Reading Comfort

~39 CPL

Narrow lines

32px

22px

30px

12px

Minor Second

Scale

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 3 elements below WCAG AA threshold (min 1.0:1).

⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 2.7x larger than body text.

GGoogle Fonts AAdobe FontsFlesch 0

Color Palette

7 unique colors

5.74:1 AA Dark

#666666

Other· 40.5%

#ffffff

Background· 20.299999999999997%

#0e1022

Primary· 12.5%

#49678e

Secondary· 1.3%

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

securepubads.g.doubleclick.net(2)connect.facebook.net(2)googletagmanager.com(2)google-analytics.com(2)config.aps.amazon-adsystem.com(2)

Website Identity

FOX 17 West Michigan News (WXMI)

FOX 17 brings the most local news, weather, traffic and sports from Grand Rapids to Kalamazoo to Battle Creek and across West Michigan on WXMI and fox17online.com.

www.fox17online.com/

17 years old

Location detected: 🇫🇮 Finlandvia ip

MarkMonitor Inc.en

Social Profiles

Facebook X (Twitter)Instagram

Sponsored

Last analyzed: 22 Apr 2026 at 21:16

Historical Analysis & Change Tracking