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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css-tricks.com

https://css-tricks.com· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

css-tricks.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

172.64.148.235

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

nicole.ns.cloudflare.com.austin.ns.cloudflare.com.

Performance

Page Speed

1.2 MB

60 requests

Image Optimization

WebPResponsiveJetpack Photon (WordPress)

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

CSS-Tricks v19v1

by Chris Coyier

View Theme

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

10 Technologies Detected

Plugins

Jetpack

Breeze Baseline Status

Jetpack

Advanced Custom Fields

Analytics

Libraries

CSS Frameworks

CDN

SEO Analysis

B70/100

css-tricks.comcss-tricks.com

CSS-Tricks - A Website About Making Websites

No description available for this page.

Title Length44 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description - important for click-through rates
• Many images missing alt text (49/53)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

324 URLs

robots.txt

41 rules

Sitemap reference found

Sponsored

Security Score

66%Fair

Interactive

HTTPS

WAF

81d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

04.02.2026

Valid Until

05.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

css-tricks.cominternal-cache-purge-csstricks.css-tricks.com

SHA-256 Fingerprint

C7:CF:36:C1:54:35:8F:CC:40:80:35:4B:B2:5A:45:A7:01:7B:DB:7A...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

399

cache-control

🟡 0s(max-age=0, s-maxage=2592000)

cache-provider

CLOUDWAYS-CACHE-DE

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9ccf24a63979d8ed-FRA

content-encoding

📦 Gzip(gzip)

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

MX Records (7)

aspmx4.googlemail.com

aspmx2.googlemail.com

aspmx3.googlemail.com

aspmx5.googlemail.com

+3 more

Domain Information

css-tricks.com

Domain Age

18y 7m

Created

04.07.2007

Expires

04.07.2032

Last Updated

07.04.2025

Registrar

MarkMonitor Inc.

DNSSEC

Not Enabled

Privacy & Compliance

TrustArc

Cookie Consent Banner

TrustArc

GDPR Indicators

Cookie consent banner detected

CMP: TrustArc

Data Protection Officer mentioned

Typography & Readability

MD Primer Bold + Blanco

88/100

Readability

/30

40/40

21px · LH 1.70

Hierarchy

/20

25/25

2.5x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

MD Primer Bold

Sans53px

Body Font

Blanco

Sans21px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

53px

36px

23px

26px

21px

✅ Excellent readability: 21px body text is ideal for all devices.

✅ Optimal line spacing: 1.70 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.5x 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

3 Tools Detected

Enterprise

Marketing Automation

MarketoEnterprise

Email marketing and automation platforms

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

TrustArcEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

21 Resources

Scripts

Styles

Async

Defer

Top Script Sources

css-tricks.com(6)c0.wp.com(4)consent.trustarc.com(2)stats.wp.com(2)anchor.digitalocean.com(1)

Website Identity

css-tricks.com

18 years old

MarkMonitor Inc.📧 Google Workspace

Social Profiles

Mastodon Bluesky

Sponsored

Last analyzed: 12 Feb 2026 at 21:23

Historical Analysis & Change Tracking