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

engineering.com

https://engineering.com· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

engineering.com

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.26.13.68

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

liz.ns.cloudflare.com.kareem.ns.cloudflare.com.

Performance

Page Speed

646 KB

78 requests

Image Optimization

Lazy LoadWebPAVIFResponsiveCloudinary

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

engineering-2024Custom

Technology Stack

18 Technologies Detected

Plugins

Gn Publisher Wtwh Universal Gam

Gravity Forms

Gravityformsgoogleanalytics Facetwp

Meta Frameworks

CSS Frameworks

Frameworks

Libraries

Icon Libraries

Analytics

Tag Managers

Advertising

CDN

SEO Analysis

C64/100

engineering.comengineering.com

Engineering.com

Engineering information and connections for the global community of engineers. Find engineering webinars, research, articles, games, videos, jobs and calcula...

Description truncated.

Title Length15 chars

Recommended: 50-60 chars

Description Length162 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (56/98)

4 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

3 rules

Allows all crawlers

Sponsored

Security Score

26%Critical

Interactive

HTTPS

WAF

70d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

30.01.2026

Valid Until

30.04.2026

Subject Alternative Names (1)

www.engineering.com

SHA-256 Fingerprint

3F:F3:68:68:0F:26:62:E3:B5:97:0D:CA:25:D7:95:94:7E:0C:00:01...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

date

Thu, 19 Feb 2026 17:58:38 GMT

content-type

text/html; charset=UTF-8

server-timing

cfCacheStatus;desc="DYNAMIC", cfEdge;dur=19, cfOrigin;dur=13...

report-to

{"group":"cf-nel", "max_age":604800, "endpoints":[{"url":"ht...

nel

{"report_to":"cf-nel", "success_fraction":0.0, "max_age":604...

vary

Accept-Encoding, Cookie

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

engineering-com.mail.protection.outlook.com

Domain Information

engineering.com

Domain Age

31y 1m

Created

11.01.1995

Expires

10.01.2028

Last Updated

28.10.2025

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Grandway + Space Grotesk

43/100

Readability

/30

12/40

12px · LH 1.33

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Grandway

Sans

Body Font

Space Grotesk

Sans12px

Contrast Ratio

Reading Comfort

~58 CPL

Optimal (45–75)

32px

18px

12px

❌ Critical: 12px body text is too small. Increase to at least 14px.

✅ Good performance: Using 2 font families keeps load times fast.

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

✅ Optimal line length: ~58 characters per line is comfortable to read.

⚠️ Cramped layout: 152 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

27 Resources

Scripts

Styles

Async

Defer

Top Script Sources

engineering.com(14)googletagmanager.com(2)securepubads.g.doubleclick.net(2)kit.fontawesome.com(1)scripts.wtwhmedia.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn

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Last analyzed: 19 Feb 2026 at 17:59

Historical Analysis & Change Tracking